- Turbine Rebuild Manual SI-22-04 [ English ]
SI-22-04
TURBINE INSPECTION AND REBUILD
PROCEDURES (RPM-401-1 AND RPM-401-2)
®
www.binks.comSI-22-04-R2 (06/2025)
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www.binks.com SI-22-04-R2 (06/2025)
EN 02. TABLE OF CONTENTS
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02. CONTENTS
04 SAFETY 3
04.1 SAFETY PRECAUTIONS..................................................................................................................................3
04.2 ADDITIONAL SAFETY INFORMATION..........................................................................................................10
04. INTRODUCTION 11
04.1 EQUIPMENT AND MATERIALS REQUIRED (STEPS 1-9)...............................................................................11
05. MAINTENANCE 13
05.1 TEARDOWN PROCESS OF RPM-401-2 (STEPS 1-9).....................................................................................13
05.2 VISUAL INSPECTION AND CLEANING OF TURBINE COMPONENTS (STEPS 10-18).................................16
05.3 RE-ASSEMBLY PROCESS OF
RPM-401-2 (STEPS 20-27)..............................................................................................................................................21
05.4 GENERAL NOTES:............................................................................................................................................24
06. PARTS IDENTIFICATION 25
07.MANUAL CHANGE SUMMARY 29
08.WARRANTY 31
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04 SAFETY
04.1 SAFETY PRECAUTIONS
Before the operation, maintenance, or servicing of this
Binks system; fully read and understand all technical
and safety literature for your product. This manual
contains information that is important for you to know and
understand.
This information relates to USER SAFETY and the
PREVENTION OF EQUIPMENT PROBLEMS.
To help you understand this information, we use
recognizable ANSI Z535 and ISO warning boxes and
symbols throughout this manual. Please obey these
safety sections.
Careful study and continued use of this manual will
provide a better understanding of the equipment functions
and procedures.
This understanding will result in improved operation,
efficiency, and longer, trouble-free service with faster and
easier troubleshooting. If you need the necessary safety
literature for your specific system, contact your local Binks
representative or Binks directly.
WARNING
WARNING!: Indicates a hazardous situation that, if not
avoided, could result in death or severe injury.
CAUTION
Caution!: Indicates a hazardous situation that, if not
avoided, could result in minor or moderate injury, or
equipment damage.
NOTICE
Notice: Indicates information considered important but
not hazard related.
DANGER
DANGER!: Indicates a hazardous situation that, if not
avoided, will result in death or severe injury.
SAFETY
Safety: Indicates a type of safety instruction, or a
separate panel on a safety placard, where specific
safety-related instructions or procedures are described.
WARNING
The hazards shown on the pages that follow can occur
during the normal use of this Binks equipment, but
not all listed hazards will be applicable to your product
model or equipment.
Repairs may only be performed by personnel
authorized by Binks.
WARNING
The user MUST read and be familiar with the Safety
Section in this manual and the safety literature therein
identified.
Only trained personnel can operate this equipment.
All personnel who operate, clean, or maintain this
equipment MUST fully read and understand this
manual! To operate and service the equipment, follow all
WARNINGS and safety requirements.
The user must be aware of and adhere to ALL local
building and fire codes and ordinances, as well as NFPA
33 AND EN 16985 SAFETY STANDARDS, LATEST
EDITION, or applicable country safety standards, before
the installation, operation, or servicing of this equipment.
NOTICE
This manual lists standard specifications and service
procedures. Differences can occur between this
literature and your equipment.
Differences in local or municipal codes, manufacturer
or plant requirements, material delivery requirements,
and more can make variations unpreventable. To
find these differences, compare this manual to your
system installation drawings and other applicable Binks
equipment manuals.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Spray Areas Fire Hazards
Improper or unsatisfactory
operation and maintenance
procedures will cause a fire
hazard.
If the safety interlocks are
disabled during operation,
protection against accidental
arcing is shut off and can cause
a fire or explosion.
Frequent Power Supply or
Controller shutdown identifies a
problem in the system. For this
occurrence, a correction will be
necessary
Fire extinguishing equipment must be present in the
spray area. Periodically run a test to make sure the
equipment stays usable.
Keep spray areas clean to prevent the build-up of
combustible residues.
Do not smoke in the spray area.
The high voltage supplied to the atomizer must be
turned off before the equipment is cleaned, flushed
or maintained.
Spray booth ventilation must be kept at the rates as
set by NFPA-33, OSHA, country, local, and municipal
codes.
If flammable or combustible solvents are used to
clean the equipment, ventilate the area.
Prevent electrostatic arcing. Maintain spark-safe
work distance between the parts that get coated and
the applicator. A span of one inch for every 10KV of
the output voltage is necessary.
Do an equipment test only in areas free of
combustible material. The test may necessitate the
high voltage to be on, but only as instructed.
Non-factory replacement parts or unauthorized
equipment modifications can cause a fire or injury.
The key switch bypass is used only during setup
operation.
Do no production work with disabled safety
interlocks.
Set up and operate the paint procedure and
equipment under NFPA-33, NEC, OSHA, local,
municipal, country, and European Health and Safety
Norms.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Spray Areas
General Use and
Maintenance
Explosion Hazard
Improper or unsatisfactory
operation and maintenance
procedures will cause a fire or
explosion hazard.
If the safety interlocks are
disabled during operation,
protection against accidental
arcing is shut off and can cause
a fire or explosion.
Frequent Power Supply or
Controller shutdown identifies a
problem in the system. For this
occurrence, a correction will be
necessary.
Improper or unsatisfactory
operation and maintenance
procedures will cause a fire
hazard.
Personnel must be correctly
trained in the operation and
maintenance of this equipment.
Prevent electrostatic arcing. Maintain spark-safe
work distance between the parts that get coated and
the applicator. A span of one inch for every 10KV of
output voltage is necessary.
Unless specifically approved for use in hazardous
locations, put all electrical equipment outside of
Class I or II, Division 1 or 2 hazardous areas in
accordance with NFPA-33, or outside of Zone 2 or
Zone 22 in accordance with EN standards.
If equipped, set the current overload sensitivity as
described in the related section of the equipment
manual. If incorrectly set, the current overload
sensitivity for protection against accidental arcing is
turned off and can cause a fire or explosion.
Frequent power supply shutdown indicates a
problem in the system, which requires correction.
Always turn off the control panel power before the
system is flushed, cleaned, or servicing the spray
system equipment. Make sure no objects are within
the spark-safe work distance before the high voltage
is turned on.
The control panel must interlock with the ventilation
system and conveyor in accordance with NFPA-33,
EN 50176.
Fire extinguishing equipment must be present in the
spray area. Periodically run a test to make sure the
equipment stays usable. Do an equipment test only
in areas free of combustible material.
Train all personnel in accordance with the
requirements of NFPA-33, EN 60079-0.
Before equipment operation, personnel must read
and understand these instructions and safety
precautions.
Obey appropriate local, municipal, state, and
national codes governing ventilation, fire protection,
operation maintenance, and housekeeping.
Reference OSHA, NFPA-33, EN Norms, and your
insurance company requirements.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Spray Area High
Voltage Equipment
Electrical Discharge
This equipment contains a
high-voltage device that can
cause an electrostatic induction
on ungrounded objects. This
electrical charge is capable of
igniting coating materials.
Insufficient ground will cause a
spark hazard. A spark can ignite
many coating materials and
cause a fire or explosion.
Operators in the spray area and the parts to be
sprayed must be sufficiently grounded.
All conductive objects inside the spray area must be
grounded.
Hold the parts that get sprayed on conveyors or
hangers that are correctly grounded. The resistance
between the parts and the earth-ground must not be
more than 1 MΩ. Refer to: NFPA-33.
Before the equipment is operated, ground all
operators. They cannot wear rubber-soled insulated
shoes. Wear ground straps on wrists or legs for
sufficient ground contact.
Operators must not wear or carry ungrounded metal
objects.
When used, operators must make complete contact
with the applicator handle and electrostatic gun. Use
conductive gloves or gloves with the palm section cut
out.
Operators must wear grounded footwear.
NOTE: REFER TO NFPA-33 OR SPECIFIC
COUNTRY SAFETY CODES FOR GUIDANCE TO
CORRECTLY GROUND THE OPERATOR.
Except for objects needed for the high-voltage
process, all electrically conductive objects in the
spray area are to be grounded. Supply a grounded
conductive floor in the spray area.
Always turn off the applicator voltage before the
system is flushed, cleaned, or when servicing the
spray system equipment.
Unless specifically approved for use in hazardous
locations, put all electrical equipment outside of
Class I or II, Division 1 or 2 hazardous areas in
accordance with NFPA-33, or outside of Zone 2 or
Zone 22 in accordance with EN standards.
Do not install an applicator into a fluid system if the
solvent supply is ungrounded.
Do not touch an energized applicator electrode.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Spray Areas
Spray Area and
Equipment Use
Toxic Fluid or Fumes
Toxic fluids or fumes can cause
severe injury or death if splashed
in the eyes or on the skin, or if
inhaled or swallowed.
High-pressure fluid sprayed
from the gun, hose fittings, or
ruptured/damaged components
can pierce the skin.
While this injury can appear as
cut skin, this is a severe injury
that can result in the amputation
of the affected area.
Read the Safety Data Sheet (SDS) for instructions
to know and understand how to handle the specific
hazards of the fluids used, and the effects of long-
term exposure.
During the spray, clean, or servicing of equipment,
or when in the work area, keep the work area fully
ventilated.
Always wear personal protective equipment (PPE)
when in the work area or during equipment operation.
Refer to the Personal Protective Equipment warnings
in this manual.
Store hazardous fluid in approved containers and
refer to local, municipal, state, and national codes
governing the disposal of hazardous fluids.
Do not point or operate the spray gun at the body
part of a person.
Do not put your hand or fingers over the gun fluid
nozzle or fittings in the hose or Proportioner.
Do not try to stop or deflect leaks with your hand,
glove, body, or shop rag.
Do not blowback fluid, as the equipment is not an
air spray system.
Relieve pressure in the supply hoses, Proportioner,
and QuickHeat™ hose before the equipment is
inspected, cleaned, or serviced.
Use the lowest possible pressure to recirculate,
purge, or troubleshoot the equipment.
Examine the hoses, couplings, and fittings every day.
Service or immediately replace parts that leak, are
worn, or are damaged. Replace high-pressure hose
sections. They cannot be recoupled or serviced.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Equipment
and Fluids
Pressurized
Aluminum Parts
Skin and Clothing Burns
Equipment surfaces and fluids
can become very hot during
operation.
The use of certain solvents and
chemicals can cause equipment
damage and severe personal
injury.
Do not touch hot fluid or equipment during operation.
Do not let clothing touch the equipment during
operation or immediately after the equipment is
stopped.
Let the equipment fully cool before the examination
or servicing of the component.
Do not use 1,1,1-trichloroethane, methylene
chloride or other halogenated hydrocarbon solvents
or fluids that contain such solvents.
These solvents can cause a severe chemical
reaction and equipment rupture that results in
equipment and property damage, serious bodily
injury, or death.
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AREAS
Indicate possible
hazard occurrences.
HAZARDS
Indicate possible hazards.
SAFEGUARDS
Prevention of possible hazards.
Spray Areas Do Not Touch
The effect of paint flow rates
and formulations on the quality
of atomization can cause the
turbines to rotate at high speeds.
Do not use a rag or gloved hand against the bell
edge to stop or slow down a bell during rotation.
Do not try to clean the bell edge during rotation.
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If the operation of this equipment, sensors, switches, or other ancillary equipment occurs in the presence of flammable
gases and vapors, connect this equipment through intrinsic-safe or Zener barriers. Classify them as a ‘simple apparatus’
or approve them for use in these areas.
04.2 ADDITIONAL SAFETY INFORMATION
EXAMPLE STATEMENT: The IntelliFlow has an emergency stop (E-Stop) pushbutton on the main operator panel.
During an emergency, all operations for the IntelliFlow will halt when the E-Stop is engaged. The operator must
disengage the E-Stop and reset the system to recover from this state.
Observe all local or municipal safety measures and wear approved protective equipment when servicing this equipment.
Clean all spilled chemicals and materials and do all work in a clean and organized environment to prevent personal
injury and equipment damage.
NOTICE
During the initial commission of the equipment and at periodic times throughout equipment life, visually examine all
fluid fittings for leaks.
Periodically, it is necessary to visually examine all pieces of this equipment for signs of noticeable degradation due to
chemicals or other conditions in the equipment’s environment.
CAUTION
Only operate the equipment after you have read this section.
DANGER
To prevent injury or electrocution while the system is under power, do not contact, disconnect, or manipulate electrical
connections or devices. The main disconnect on the right side of the controller can be locked out. Follow the proper
Lockout–Tagout (LOTO) procedures for internal controller electrical work.
Only qualified electrical personnel can perform the work if diagnosis and troubleshooting are not possible during
working conditions.
WARNING
To prevent possible chemical spillage when personnel are not on site, air and fluid supplies for the equipment must be
disabled when the equipment idles for an extended period, such as an end-of-day shutdown.
SAFETY
Obey local or municipal regulations that require installed fire suppression for equipment operation.
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04. INTRODUCTION
Important Note: Parts are interchangeable between
RPM-401-1 and RPM-401-2 without issue. Various mix
and matching of parts have been performed through
development to assure proper fitment. This statement is
only applicable if using genuine Ransburg (Binks) support
parts.
Notes:
1. During the cleaning operation use only lint free towels
to clean and re-assemble the turbine, any traces of
lint could cause air-bearing problems. The lint free
towel is included in kits KK-4461 and KK-4461-1.
2. Use only A11545-00 Petrolatum jell for O-ring
lubrication, do not get jell on the shaft or bearings of
the turbine assembly.
3. Tools required for disassembly:
○ Allen Wrench, 2.5mm (3/32 in.) and 1/16 in.
(1.5mm)
○ RPM-412 Wrench
4. Use the following rebuild kit to service RPM-401-2, kit
number KK-4461 or KK-4461-1.
04.1 EQUIPMENT AND MATERIALS
REQUIRED (STEPS 1-9)
NOTICE
• See page 27 for breakout of KK-4461 and KK-4461-1
service kits for the RPM-401-1 and RPM-401-2
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05. MAINTENANCE
05.1 TEARDOWN PROCESS OF RPM-401-2
(STEPS 1-9)
Step 1: Serial Number Identification
If seeking warranty and or evaluation, please provide
serial number of turbine motor. This will be needed when
requesting a RMA number to return turbine motor to the
factory for assessment.
Step 3: Inspection of Rotor
Looking at RED circle, make sure the magnets are seated
visually. Damaged magnet will result in speed control
issues if using Ransburg speed controllers.
Step 2: Removal Rear Cover
Using Allen Wrench size 3/32 in. (2.5 mm) remove the
four screws from the base as shown.
NOTICE
• Referencing Yellow circle, visually see the rotor
is aligned with shaft. This is important during
reassembly of turbine motor to assure unit is aligned
to timing mark. The rotor and shaft are balanced as
an assembly not aligning the marks will reduce air
motor life from unwanted vibration at operational
speeds.
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Step 5: Feed Plate Disassembly Procedure
Using Allen wrench 3/32in (2.5mm) remove four (4) screws
as shown.
Step 6: Remove Feed Plate and Rotor
You possibly will need to push on turbine shaft by hand
to free up feed plate assembly. Once feed plate is loose
remove feed plate from turbine housing as shown in
photo.
Step 7: Remove Rotor and Rear Bearing from Turbine
Housing
Once feed plate has been removed from the motor
carefully pull the shaft and rear bearing from the motor
shown within the next couple of photos. The rear bearing
will remain on the shaft until disassembly.
The red arrow highlights another o-ring (A13605-00) that
can be overlooked during re-assembly of the turbine
motor.
Step 4: Removal of Screws from Rotor
Using Allen Wrench 3/32in (2.5mm) remove four screws
from rotor as shown. The screws in the rotor are only
supplied with the shaft, rotor, and spacer kit since they
are balanced in the assembly. Do not lose these screws
after removal. Do not try to remove rotor until feed plate
has been disassembled from main housing. NOTICE
• The O-ring A14791-00, highlighted by the red arrow is
frequently forgotten during reassembly of air motor.
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Step 8: Remove Second Bearing and Spacer in
Housing, See Following Views
Spacer RPM-51 and front bearing RPM-26 remain in
housing once shaft is removed, reference yellow circle.
Remove screws using Allen Wrench size 3/32in.
(2.5mm) as shown.
Observe O-ring A13065-00 placement in front of bearing
as shown, see red arrow
Pull front bearing out of housing along with RPM-51
spacer as shown. Front bearing denotes direction of
install. See red circle for the arrow of required direction
for installation into housing.
Typical view of the shaft assembly removed from the
motor shown. Notice the o-ring (A13065-00) on the front
bearing.
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If the bearing is acceptable proceed facing off of the
machined face. Use emery cloth 2/0 grade and a flat
surface such as granite plate. Place the emery cloth on
the surface plate rough side up. Proceed to place the
bearing face on the emery cloth then carefully rub the
face on the cloth in a figure 8 pattern. Repeat the figure
8 pattern about 3 to 4 times. Visually inspect the bearing
making sure that you have not ground off the V in the
face. If the V has been ground off the bearing must be
replaced.
05.2 VISUAL INSPECTION AND CLEANING
OF TURBINE COMPONENTS (STEPS 10-18)
Step 10: A14781-00 (RPM-24) Thrust Plate Bearing
Inspect the V groove on the bottom of the thrust plate
around the circumference of the bearing air holes. The
V groove must be uniform and visible to the naked eye.
If it is damaged, scratched deeply, and/or missing, reject
the bearing.
Either using .006 wire included in kit or use of electronic
cleaner with tube, not included in kit, verify all air jets are
open and not blocked. Steady stream of fluid should be
flowing from air jet.
Step 9: Remove Screws from Bearing and Thrust
Plate
Before disassembly of air bearing from thrust plate make
sure there is an X as shown in yellow circle on the
bearing edges and spacer ring. If it does not exist, make
an X using sharp edge device to leave witness mark
to provide alignment during re-assembly of bearing and
thrust plate.
This is critical step to assure alignment of holes between
the bearings and spacer plate are correct. If not in
alignment no bearing air path will exist, and the shaft will
not float on air film when bearing air is supplied.
Using Allen Wrench size 1/16 in. (1.5mm) remove eight
(8) screws as shown.
NOTICE
• The objective is to remove foreign material and or
marks in the face, usually no more than 3-4 figure 8
patterns are needed to correct the face of the bearing.
NOTICE
• Wear proper PPE when using compressed solvents to
avoid eye contact.
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Step 11: A14779-00 (RPM-25) Rear Bearing
Inspect the V groove on the bottom of the thrust plate
around the circumference of the bearing air holes. The
groove must be uniform and visible to the naked eye, if it
is damaged, scratched deeply and or missing reject the
bearing.
After visual inspection of the V groove if the bearing is
acceptable proceed facing off of the machined face.
Use emery cloth 2/0 grade and a flat surface such as
granite plate. Place the emery cloth on the surface plate
rough side up. Proceed to place the bearing face on the
emery cloth then carefully rub the face on the cloth in a
figure 8 pattern. Repeat the figure 8 pattern about 3 to
4 times. Visually inspect the bearing making sure that you
have not ground off the V in the face. If the V has been
ground off the bearing must be replaced.
Step 12: RPM-26 Front Upper Bearing
Using a narrow strip of the emery cloth included in rebuild
kit, rub lightly on ID of the bearings both front and rear.
Polish the bearings in circular motion do not rub in linear
motion. A linear motion will create a flat spot on the
bearing ID resulting in performance issues. Remove only
what is needed to clean the bearing face no excessive
polishing is required.
Step 13: Inspection of Air Jets on Front and Rear
Bearings - Wire and Solvent Method
Next proceed to clean out the bearing air holes in the
rear bearing using the .006 wire included in the kit. Use
extreme caution when cleaning the holes in the bearing,
wire will bend over easily. Carefully push the wire through
each bearing air hole to assure the passage is open.
SAND IN
A FIGURE 8
MOTION
NOTICE
• The objective is to remove foreign material and or
marks in the face, usually no more than 3-4 figure 8
patterns are needed to correct the face of the bearing.
NOTICE
• There are two sets of bearing air holes on the air
bearing perform the cleaning operation on both sets.
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Now rinse the bearing air holes clean using the electrical
contact cleaner with the small red tube attached. The
spray must escape from the opposite side of the hole
noting that the hole is clean of all debris. Repeat this
process for both sets of bearing air holes on the air
bearing until holes are cleaned.
Please note: if the electrical contact cleaner will not pass-
through jet in strong defined stream use wire to open jet.
If neither the wire nor electrical contact cleaner will pass
through the jets, the bearing must be replaced. Typically, one
plugged jet will allow the air motor to function but significantly
reduces the load capabilities the air motor can handle. If using
larger bell cup or applying significant amount of CC/min of
material to painted target, the motor will fail prematurely. It
is best to replace the bearing for optimal performance. Do
not attempt to drill out jets whatsoever, any diameter change
will reduce the load the turbine motor can withstand while
running at speed and will cause catastrophic failure.
ROTATE CIRCULAR MOTION
AROUND SHAFT DIAMETER
Step 14: Inspecting and Polishing Shaft Assembly
Inspect the shaft for discoloration if the shaft is black or
blue it will be necessary to emery cloth the shaft. Using
emery cloth 2/0 polish by hand in rotating motion, do not
sand in linear (up and down motion creating flat spots on
the shaft.) Always sand shaft around the diameter evenly.
Remember you are removing the discoloration only. If the
shaft has deep grooves ground in it from bearing failure,
grooves you can feel with your fingernail then reject the
shaft and replace with new unit complete, A14775-00.
NOTICE
• Please make sure you are wearing safety glasses
during this procedure. Carefully point the red tube into
the bearing air holes and spray the fluid.
NOTICE
• Measure the outside of the shaft using 1-2
micrometers (Shaft diameter should measure 1.0080
- 1.0081) (25.600-25.605mm). All measurements
should be done after the shaft has been polished.
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Polish both flanges on the shaft, use the cut emery cloth
donuts provided in the rebuild kit KK-4461 / KK-4461-1.
Place the donut onto the flange of the shaft rough side
forward. Place the flange bearing face onto donut. Then
holding the bearing and emery cloth rotate the two pieces
back and forth until the flanges are polished. Repeat this
process to polish both sides of the flange.
Step 15: (RPM-29) Rear Cover Clean and Inspect
Replace O-ring
Inspect the rear cover for damage clean the cover, if nec-
essary, remove all paint from the interior cavity and on the
outside. Use solvent compatible with the paint being used.
REPLACE BEARING AIR
O-RING A13069-00 ONCE
COVER IS CLEAN
Step 16: (RPM-27) Body Clean and Inspect Replace
O-ring
Inspect the body for damage clean the body, if necessary,
remove all paint from the interior cavity and on the
outside. Use solvent compatible with the paint being
used.
Replace O-ring
A14784-00
Apply A11545-00 Petrolatum Jell sparingly using forefinger to
apply on the inside diameter. Apply very little, it’s needed for
O-ring lubrication only. Set housing aside for reassembly process.
•
CAUTION
Do not soak the part in citrus-based solution for more
than 15 minutes.
•
CAUTION
Do not soak the part in citrus-based solution for more
than 15 minutes.
NOTICE
• If the pH level is not balanced in the citrus cleaner, it
will etch the black oxide surface of the part if left in the
solution too long.
NOTICE
• If the pH level is not balanced in the citrus cleaner, it
will etch the black oxide surface of the part if left in the
solution too long.
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Step 18: Front Cover (RPM-100) and (RPM-51) Bearing
Spacer Clean and Inspect
Front Cover – Clean spacer and inspect.
Inspect both front cover and bearing spacer for damage
and clean. If necessary, remove all paint from the interior
and on the outside. Use solvent compatible with the paint
being used.
Bearing Spacer – Clean spacer and inspect.
Step 17: (RPM-30) Feed Plate Clean and Inspect
Replace O-rings
The three O-rings on this feed plate from front to back are:
• A13066-00
• A13064-00
• A13068-00
Inspect the feed plate for damage caused by the rotor.
If the feed plate is scratched excessively from the rotor
rubbing, replace it. Otherwise, clean the feed plate as
needed. Remove all paint from the inside diameter
and outside diameter of the feed plate. Use solvent
compatible with the paint being used.
•
CAUTION
Do not soak the part in citrus-based solution for more
than 15 minutes.
NOTICE
• If the pH level is not balanced in the citrus cleaner, it
will etch the black oxide surface of the part if left in the
solution too long.
•
CAUTION
Do not soak the part in citrus-based solution for more
than 15 minutes.
NOTICE
• If the pH level is not balanced in the citrus cleaner, it
will etch the black oxide surface of the part if left in the
solution too long.
EN 05.MAINTENANCE
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Step 19: Re-Assembly Process of RPM-401-2 Turbine
Motor
Step 20: Assembly of Rear (Flange) Thrust Bearing
and Rear Bearing to Shaft
Pick up the turbine shaft carefully slide the rear flange
bearing A14779-00 (RPM-25) onto the shaft. Next
assemble the spacer ring onto the rear bearing. The rear
bearing and spacer have a portion of a X (see red circle)
stamped on the outside noting alignment of the two parts.
Make sure to observe this alignment, it provides air flow
between the two bearings. Re-assemble to assure X is
complete as shown.
Once the bearings are aligned according to X proceed
to assemble the cap screws, 8BA x 5/8 through the rear
flange bearing, stainless steel shaft spacer, and into the
RPM-24 rear thrust bearing. Do not tighten the screws
until all are in place, then tighten in opposing directions
Step 21: (RPM-26) Upper Front Bearing
Once the rear bearing assembly has been assembled into
place, then assemble one O-ring on top of the rear flange
bearing. The O-ring will sit snug on the undercut of the
bearing.
Now place the RPM-51 bearing spacer on top of the
O-ring. The spacer is bidirectional can be assembled
either direction.
Now assemble two more O-rings onto the RPM-26 Upper
front bearing, they will sit on the undercut of the bearing.
Carefully place the bearing onto the shaft, make sure to
observe the arrow on the front bearing noting direction of
which way bearing must go on.
SPACER RPM-51
ARROW MUST BE FORWARD
AS SHOWN
INSTALL O-RINGS A13065-00 AS SHOWN (QTY 3)
Torque to 5-6 lbs.-in.
(.56-.68 Nm) using Allen
Wrench size 1/16 in.
(1.5mm) the eight (8)
screws as shown.
05.3 RE-ASSEMBLY PROCESS OF
RPM-401-2 (STEPS 20-27)
NOTICE
• During re-assembly of turbine motor make sure your
hands are clean and free of any grease or oil. Highly
suggested to wear latex or Nitrile gloves if needed.
The worktable must also be free of any contaminates
during assembly it’s suggestive that lint free tissues
should be laid out on the table surface for cleaner
assembly surface. Any debris or contaminates
allowed to enter the air bearing during re-assembly
will reduce performance and turbine motor life.
NOTICE
• The arrow should be pointing upwards.
EN05.MAINTENANCE
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Step 23: Assemble Shaft and bearing set into housing
With the bearing assembly upright as shown, carefully
slide the body assembly onto the bearings. Keep sliding
the body onto the bearings until it is properly seated.
Make sure to inspect the RPM-51 bearing spacer it must
be in alignment with the inside diameter of the RPM-27
body assembly.
Some hand-press force is required to over come the
O-ring compression during insertion of shaft and bearings
into the housing.
MAKE SURE TO ASSEMBLE
O-RING A14791-00 HERE.
Seated Position
as shown
Step 24: Install Feed Plate RPM-30 onto Housing
Verify O-ring A14791-00 is installed onto the back side of
the rear thrust bearing noted in step 23.
Place feed plate on the bottom side of the body and
bearing assembly. Make sure to align the arrows on both
the body and feed plate.
Once the arrows are aligned, place the SHCS M3x20mm
into the four holes in the body assembly, tighten the
SHCS in x fashion, and torque to 15-16 lbs.-in (1.7-1.8
Nm) using Allen Wrench size 3/32 in. (2.5 mm).
15-16 LBS.-IN (1.7-1.8 Nm)
Step 22: Install RPM-100 Front Cover to Housing
Assemble RPM-100 cover onto the RPM-27 body hand
tight only. Cover is needed now to keep the bearing
assembly from coming out during assembly insertion.
Use SSF-3137 Screw from kit 76909-00, Qty. 4, using
Allen Wrench size 3/32 in. (2.5 mm).
EN 05.MAINTENANCE
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Step 25: Assemble Rotor onto Shaft
Carefully slip the rotor onto the shaft, use Allen wrench
size 3/32 in. (2.5 mm) if needed to rotate the rotor into
position of alignment marks. Make sure to align the
machined indents during re-assembly. Once the rotor
and shaft are aligned proceed to assemble the SHCS
M3x16mm into the rotor. Torque SHCS screws to 15-16
lbs.-in (1.7-1.8 N-m) using Allen wrench size 3/32 in. (2.5
mm). It’s recommended to use RPM-412 wrench to hold
turbine shaft during the tightening of the screws that are
holding the rotor onto the shaft.
ALIGNMENT OF THE SHAFT TIMING MARK TO
ROTOR TIMING MARK IS CRITICAL TO ASSURE
UNIT RUNS SMOOTHLY UPON RE-ASSEMBLY.
15-16 LBS.-IN (1.7-1.8 Nm)
Step 26: Assemble Rear Cover onto the housing
Verify the small O-ring is installed into the rear cover
counterbore for bearing the air connection. The O-ring
A13069-00 should nest in counterbore. See step 16 for
placement of O-ring if not already installed.
Next assemble the rear cover onto the turbine assembly
make sure to align the bearing air hole in the body to
the bearing air hole in the RPM-27 cover. Proceed to
assemble the SHCS M3x12mm into the rear cover hand
tighten only. The arrows on outside of the housing and
rear cover are providing alignment to assure bearing air
alignment.
Torque the SHCS screws to 15-16 lbs.-in (1.7-1.8 N-m)
using Allen wrench size 3/32 in. (2.5 mm).
15-16 LBS.-IN (1.7-1.8 Nm)
MATCH ARROWS
EN05.MAINTENANCE
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Step 27: Front Cover Final Assembly (RPM-100)
Tighten the SHCS M3x6mm screws to the RPM-100 front
cover, torque to 15-16 lbs.-in (1.7-1.8 N-m) using Allen
wrench size 3/32 in. (2.5 mm).
15-16 LBS.-IN (1.7-1.8 Nm)
05.4 GENERAL NOTES:
1. Once turbine motor is assembled following the steps
outlined throughout this manual the shaft should spin
freely by hand touch and not be bound up. Please do
not spin shaft excessively without bearing air present.
If not spinning freely disassemble re-inspect for
issues.
2. Make sure air filtration for both bearing air (.5
Micron) RPM-418 and turbine air (1 Micron) are in
place to assure longevity of the turbine motor life.
Air contamination will result in premature air motor
failure.
EN 06.PARTS IDENTIFICATION
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06. PARTS IDENTIFICATION
19
7*
14
18
4*
2*
20**
10*
16
Spindle Replacement
ITEMS WITH AN ASTERISK * ARE ONLY AVAILABLE IN KIT 76909-00.
ITEMS WITH TWO ASTERISKS ** ARE ONLY AVAILABLE IN KIT A14775-00.
3*
15
11*
8*
5*
1
17
12*
13
9*
6*
20**
20**
20**
EN06.PARTS IDENTIFICATION
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Item # Description QtyNew Part #
RPM-401-2 BOM
Description QtyPart #
76909-00 (O-RING & SCREW KIT)*
Old Part #
ITEMS WITH AN ASTERISK * ARE ONLY AVAILABLE IN KIT 76909-00.
ITEMS WITH TWO ASTERISKS ** ARE ONLY AVAILABLE IN KIT A14775-00.
AER0054-00 8BA X .625 SHCS 8
SSF-3137 M3 X 0.5 X 8mm LG. SHCS 4
A14797-00 M3 X 0.5 X 12mm LG. SHCS 4
A14774-00 M3 X 0.5 X 20mm LG. SHCS 4
A13064-00 O-RING, 79.00mm ID X 1.78mm 1
A13065-00 O-RING, 31.34mm ID X 3.53mm 3
A13066-00 O-RING, 60.05mm ID X 1.78mm 1
A13068-00 O-RING, 66.34mm ID X 2.62mm 1
A13069-00 O-RING, 2.90mm ID X 1.78mm 1
A14784-00 O-RING, 53.57mm ID X 3.53mm 1
A14791-00 O-RING, 40.87mm ID x 3.53mm 1
1 A14779-00 RPM-25 BEARING SUB-ASSEMBLY 1
2* SSF-3137 N/A M3 x 0.5 x 8mm LG. SHCS 4
3* A14797-00 N/A M3 X 0.5 X 12mm LG. SHCS 4
4* A14774-00 N/A M3 X 0.5 X 20mm LG. SHCS 4
5* AER0054-00 N/A 8BA X .625 SHCS 8
6* A13064-00 N/A O-RING, 79mm ID X 1.78mm 1
7* A13065-00 N/A O-RING, 31.34mm ID X 3.53mm 3
8* A13066-00 N/A O-RING, 60.05mm ID X 1.78mm 1
9* A13068-00 N/A O-RING, 66.34mm ID X 2.62mm 1
10* A13069-00 N/A O-RING, 2.90mm ID X 1.78mm 1
11* A14784-00 N/A O-RING, 53.57mm ID X 3.53mm 1
12* A14791-00 N/A O-RING, 40.87mm ID X 3.53mm 1
13 RPM-24 RPM-24 THRUST PLATE 1
14 RPM-26 RPM-26 BEARING, FRONT 1
15 RPM-27 RPM-27 BODY, MAIN 1
16 RPM-29 RPM-29 COVER, REAR 1
17 RPM-30 RPM-30 TURBINE HOUSING 1
18 RPM-51 RPM-51 SPACER, BEARING 1
19 RPM-100 RPM-100 COVER, FRONT 1
20** A14775-00 RPM-412 SHAFT, ROTOR, SPACER, AND SCREW KIT 1
NOTICE
• All parts listed for RPM-401-2 are backward
compatible for use in the RPM-401-1 turbine motor
also.
EN 06.PARTS IDENTIFICATION
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Part No. Description Qty
A14790-00, SOFT PART SERVICE KIT
RPM-62 EMERY DONUT 1
RPM-437 6 WIRE ASSEMBLY 1
RPM-63 9 EMERY PAPER STRIP 2
SSC-6001 LINT FREE TISSUE 2
76909-00 O-RING & SCREW KIT 1
SI-22-04-R1 SERVICE INSTRUCTION, RPM-401-1 & RPM-401-2 1
Part No. Description
KK-4461, REBUILD KIT CONFIGURATION
KK-4461 30mm & 57mm MOTOR ASSEMBLY
KK-4461-1 70mm MOTOR ASSEMBLY
Part # Description
PARTS LIST FOR KK-4461 & KK-4461-1
H-2338 POLYETHYLENE TUBING (3/8’’ 3/8’’ OD x 1/4’’ ID) 4.62 4.62
A14790-00 KIT, SOFT PART SERVICE, RPM-401-1 & RPM-401-2 1 1
RPM-2 S.A. CAP RETAINER 1 ---
LRPM0111-00 70mm SHAPING AIR RING SEAL --- 1
KK-4461 Qty. KK-4461-1 Qty.
06.1 ADDITIONAL SERVICE KITS
RPM-401-1 & RPM-401-2
EN06.PARTS IDENTIFICATION
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EN 07.MANUAL REVISIONS
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MANUAL CHANGE SUMMARY
Date Description Version
06/2025 REBRANDING AND UPDATE TO NEW FORMAT. R2
07.MANUAL CHANGE SUMMARY
EN07.MANUAL REVISIONS
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EN 08.WARRANTY
WARRANTY POLICY
This product is covered by Binks’ materials and workmanship limited warranty.
The use of parts or accessories from sources other than Binks will void all warranties. Failure to follow reasonable
maintenance guidance provided can invalidate the warranty.
For specific warranty information, please contact Binks.
For technical assistance or to locate an authorized distributor, contact one of our international sales
and customer support locations listed below.
www.binks.com SI-22-04-R2 (06/2025) 31 / 32
REGION BINKS CONTACT
Americas Tel: 1-800-992-4657
Europe, Africa, Middle East Tel: +4401202571111
India marketingroa@binks.com
China Tel: +862133730108
Korea Tel: +82313663303
Japan Tel: +81457856421
Australia Tel: +61085257555
WARRANTY PAGE
08.WARRANTY
EN
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Binks reserves the right to modify equipment specifications without prior notice.
Binks®, DeVilbiss® and Ransburg® are registered trademarks of Binks US, LLC.
©2025 Binks US, LLC. All rights reserved.
