TRS-PSK-003-01/MD-000074185A
Inner sleeve
Detaching screw hole
Clamping bolt
Outer sleeve
POSI LOCK
PSL-K/PSL-K-B/PSL-K-C/PSL-K-F
Instruction Manual
This manual is common to standard, hexagon head bolt type, basic antirust type, and stainless
steel type.
Before use this product, read the instruction manual carefully and use the product safety and correctly.
1. Before using……………………………………………………………………P1
2. Safety Precaution…………………………………………………………..P2
3. Installation procedure …………………………………………………..P4
4. Removal …………………………………………………………………………P6
5. Other notes ……………………………………………………………………P6
1.Before using
1-1After opening the package
First, please check the following points.
1) Is the product what you ordered?
2) Is the product damaged during transportation?
If any problems are found, please contact your supplier.
1-2 Structure and parts
The main part consists of three parts. “Outer sleeve / Inner sleeve / Clamping bolt’’
－1－
1-3 Part quality of the material
DANGER
When death or serious injury may
result by mishandling
CAUTION
When disability or only physical
damage may result by mishandling
Structural precautions
Touching the product during operation could cause injury. Place a safety
cover to avoid any accident. Additionally, set up a safety mechanism for
quick stop of the product when opening the cover.
Do not use the product near flammable liquids or in the presence of gas
and other explosive air particles.
DANGER
PSL-K: Standard
Sleeve: equivalent of S45C thermal refining
Clamping bolt: SCM435, Black oxide finish
PSL-K-B: Hexagon bolt type
Sleeve: equivalent of S45C thermal refining
Clamping bolt: SCM435, Black oxide finish
PSL-K-C: Basic antirust type
Sleeve: equivalent of S45C thermal refining, Electro less nickel plating
Clamping bolt: SCM435, GEOMET treatment
PSL-K-F: Stainless Steel type
Sleeve: SUS 304
Clamping bolt: SUH660, Solid lubricant film treatment
2.Safety Precautions
Please read carefully through the instruction manual and the technical information for
proper use and safety. In this manual, safety precautions are classified by "DANGER" and
"CAUTION".
Equipment use (atomic energy, aerospace, medical treatment, transportation, or various
safety devices) that may result in serious bodily injury or loss of life directly by mechanical
failure or mishandling, careful examination is necessary. Contact us for further information.
The company has taken all possible measures to produce a quality product; however,
continuous rotational states when the clutch can not be disengaged or coasting of the
machine when the brakes went off is envisioned as emergency. Please pay attention to
safety measures in case anything goes wrong.
－2－
The driven and driving sides could be completely detached when the
product is damaged. Set up a safety mechanism such as a safety brake to
avoid any danger.
Mounting precautions
Depending on the tightening adjustment of bolt or screw, exceptionally
dangerous situations such as product damage or performance degradation
could occur. Always use a calibrated torque wrench and clamp at the
tightening torque specified by Miki Pulley.
It is very dangerous if the driving part starts by accident while
mounting the product. Be sure that the main power of the equipment is
turned off.
Cautions during operation
If the product is used in excess of more than its maximum rated
permissible speed, very dangerous product damage could occur by a large
vibration.
Due to the exposed rotor, touching the product during operation may
cause injury. Make sure not to touch the product during operation.
Using the product with more than the "maximum permissible
misalignment" could cause damage or adverse effect on the equipment.
Always operate the product within the specified "maximum permissible
misalignment."
Cautions for maintenance and inspection
It is extremely dangerous if the driving part starts operating by accident
while dismounting the product. Make sure that the main power of the
equipment is off.
Cautions for disposal
Do not leave the product around where young children may play.
Structural precautions
Do not use the product in an environment where chemicals may spill,
humidity is high, or in hot or cold temperature.
Mounting precautions
The installation of the product must be performed within the specified
maximum permissible error. Using the product with more than the
maximum permissible error could cause damage or adverse effect on the
equipment.
Using a bolt or screw that is not specified by our company could
damage the product. Do not use any bolt or screw unspecified.
To avoid any injury by stripping, spring pin or keyway, make sure to
wear protective equipment such as safety glasses or gloves.
Lifting of a heavy weight could cause back injury. Use a hoist when
carrying or mounting the product.
CAUTION
－3－
Cautions during operation
Using the product with more than the specified permissible torque could
cause damage or adverse effect on the equipment.
If abnormal noises or vibrations occur during operation, improper
mounting should be considered. Do not leave the situation as it is. It may
cause damage to the equipment itself. Also, for reasons other than above,
the belts and other screws may loosen or become defective even if the
product is mounted correctly.
Using the product when the locking part is in a slip condition could over
heat the product, which could cause damage to the equipment.
Cautions for maintenance and inspection
We will refuse to take responsibility as to the damaged product that is
dismantled, remodeled or repaired by a third party except our company
and the designated company. Therefore, for the product that the
assembly process or procedure of dismantlement is described in the
manual, we will not be responsible as well. Please use our service network
for repair and dismantlement.
Cautions for disposal
Call for a waste-control-collection company for disposal.
3. Installation procedure
3-1 Cleaning the shaft and hub
Wipe off any rust and dust adhering to the inner shaft and hub completely. And apply a thin
coating of oil or grease.
Notice
Do not use molybdenum containing oil. It will affect the coefficient of friction.
3-2 Cleaning the POSI LOCK
Wipe off any rust prevention oil or dust from the surface of the POSI LOCK (inner sleeve and
the outer sleeve). Do not disassemble and wipe off the other parts.
3-3 Mounting on the shaft and hub
Set the POSI LOCK to the shaft and hub. After fasten each clamping bolt lightly to contact,
position.
Notice
If the POSI LOCK is hard to be inserted, loose each clamping bolts slightly and then insert the
POSI LOCK.
Do not fasten the clamping bolt until the POSI LOCK is completely set to the shaft and hub.
3-4 Fastening the clamping bolts
Apply lock tight equally to each clamping bolt, and tighten each clamping bolt diagonally from
each other. Then, tighten all of the clamping bolts to the specified torque by using a torque
wrench. The material used for the clamping bolt of the PSL-K-F is stainless steel and easily
－4－
scratched. Careful handling is required especially when fastening the bolt.
PSL-K/-B/-C
Clamping bolt
size
Tightening torque
[Nm]
Detaching
screw hole
6-7
M4
2
M4
8-14
M4
4
M4
15-25
M5
8
M5
28-42
M6
14
M6
PSL-K-F
Clamping bolt size
Tightening torque
[Nm]
Detaching screw
hole
6-7
M4
2
M4
8-14
M4
3.5
M4
15-25
M5
7
M5
28-35
M6
12
M6
3-5 Installation precautions
If the hub is assembled as shown in the figure 1, the outer sleeve will slightly move in the axial
direction when tightening. If the hub is assembled as shown in the figure 2, the outer sleeve
doesn’t move in the axial direction, however, the torque, thrust power, and contact pressure will
drop to approximately 70% of the values indicated.
Figure.1 Figure.2
Clamping bolt tightening torque
PSL-K / PSL-K-B / PSL-K-C
Clamping bolt tightening torque
PSL-K-F
－5－
4. Removal
4-1 Safety inspection
Confirm that torque or thrust power is not applied to POSI LOCK. Also, make sure if there
is any danger of dropping due to the empty weight of the shaft and hub. And then start
mounting. POSI LOCK is no self- locking mechanism. By loosening clamping bolts, fastening
force is released instantaneously.
4-2 Removal
Since they lock automatically under certain conditions, they may not be able to be removed
by loosening the clamping bolts. In this case, do not forcibly remove them. It may cause
damage to the shaft, hub, and body.
First, loosen the clamping bolts to open a gap between the flange and the bearing surface of
the clamping bolt (2mm is sufficient). Then, screw the bolt into the detaching screw hole. By
this action, the fastening force is released. One detaching screw is sufficient. Otherwise, Use
two screws.
5. Other notes
5-1 Tightening tool
Use a torque wrench for tightening the clamping bolts.
Hand tightening is improper and can cause problems. Please do not hand tighten.
5-2 Clamping bolt
Do not use any other clamping bolt except what is attached to the product.
It is a special high intensity bolt and other bolts cannot be used.
If you need bolts for such as loss or exchange, please contact our company.
5-3 Case of re-use
Although POSI LOCK is reusable, please do not use if there is any abnormality.
5-4 Precision
Do not change tightening torque for adjust attachment accuracy. In order to demonstrate
sufficient performance, all the bolts need to be tightened equally.
Contact by email
Please contact us using the inquiry form and be aware that support for inquiries received on Saturdays,
Sundays, holidays, New Year's, and summer business holidays will be provided on the next business day.
Contact by phone
Japanese/English
Miki Pulley International Business Department
TEL +81-46-257-5109
－6－
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