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Posi-Lock PSL-G-90

Model PSL-G-90 / PSL-G / Miki Pulley (Official website) / Listed on page 5 of the document

Friction joint that clamps a shaft and hub together by frictional force. Tightened with clamping bolts.

Last verified: (date the content was verified against the source document)

Posi-Lock PSL-G-90 on page 5 of Miki Pulley "ポジロック PSL-G / PSL-G-C 取扱説明書"
Source: Miki Pulley「ポジロック PSL-G / PSL-G-C 取扱説明書」page 5
A reduced image of the relevant page is quoted from the document. Copyright belongs to Miki Pulley.Request removal

Specifications

Clamping bolt 16-M10×25
Clamping bolt tightening torque 82 N・m
Removal screw hole 3-M12

PSL-G model comparison

Compare 28 models in the same series by specification.

Model Clamping bolt Clamping bolt tightening torque Removal screw hole
POSI LOCK PSL-G — — —
PSL-G-100 14-M12×30 142 N・m 3-M14
PSL-G-110 14-M12×30 142 N・m 3-M14
PSL-G-120 16-M12×30 142 N・m 3-M14
PSL-G-19 / PSL-G-19-C 8-M6×18 17 N・m 2-M8
PSL-G-20 / PSL-G-20-C 8-M6×18 17 N・m 2-M8
PSL-G-22 / PSL-G-22-C 8-M6×18 17 N・m 2-M8
PSL-G-24 / PSL-G-24-C 8-M6×18 17 N・m 2-M8
PSL-G-25 / PSL-G-25-C 8-M6×18 17 N・m 2-M8
PSL-G-28 / PSL-G-28-C 10-M6×18 17 N・m 2-M8
PSL-G-30 / PSL-G-30-C 10-M6×18 17 N・m 2-M8
PSL-G-32 / PSL-G-32-C 12-M6×18 17 N・m 2-M8
PSL-G-35 / PSL-G-35-C 12-M6×18 17 N・m 2-M8
PSL-G-38 / PSL-G-38-C 14-M6×18 17 N・m 2-M8
PSL-G-40 / PSL-G-40-C 14-M6×18 17 N・m 2-M8
PSL-G-42 / PSL-G-42-C 12-M8×22 41 N・m 2-M10
PSL-G-45 / PSL-G-45-C 12-M8×22 41 N・m 2-M10
PSL-G-48 / PSL-G-48-C 12-M8×22 41 N・m 2-M10
PSL-G-50 / PSL-G-50-C 12-M8×22 41 N・m 2-M10
PSL-G-55 / PSL-G-55-C 14-M8×22 41 N・m 2-M10
PSL-G-60 / PSL-G-60-C 14-M8×22 41 N・m 2-M10
PSL-G-65 16-M8×22 41 N・m 2-M10
PSL-G-70 14-M10×25 82 N・m 3-M12
PSL-G-75 14-M10×25 82 N・m 3-M12
PSL-G-80 14-M10×25 82 N・m 3-M12
PSL-G-85 16-M10×25 82 N・m 3-M12
PSL-G-90 This product 16-M10×25 82 N・m 3-M12
PSL-G-95 18-M10×25 82 N・m 3-M12

How to choose Friction joint

Points to check when selecting, with the values for this product (PSL-G-90).

  1. 1. Match the Shaft Diameter and Boss Bore Diameter

    The applicable shaft diameter d is the outer diameter of the shaft to be installed, and the outer diameter D is the dimension that fits into the boss bore. Friction fastening depends on controlling the fit clearance, so also confirm that the shaft and boss bore can be machined to the manufacturer's specified tolerances and surface roughness.

  2. 2. Allow a Margin in Allowable Transmission Torque

    If the allowable transmission torque T is exceeded, the fastening surfaces slip, causing misalignment and wear. Select based not only on the motor's rated torque but also on the peak torque during startup or impact loads multiplied by a service factor.

  3. 3. Check Simultaneous Action with Thrust Force

    For applications with axial loads, check the allowable thrust force. When torque and thrust force act simultaneously, they share the friction force, so each allowable value may not be usable independently; confirm the manufacturer's handling of combined loads.

  4. 4. Examine Boss Strength from Side Pressure on the Boss

    During fastening, surface pressure acts on the inner surface of the boss, which pushes it outward. Calculate the required boss outer diameter and wall thickness from the boss side pressure and the yield point of the boss material, and for thin-walled bosses or low-strength materials such as aluminum, check for breakage or deformation. Examine the shaft side in the same way using the shaft side pressure.

  5. 5. Review the Relationship Between Overall Length and Boss Width

    The overall length L is the axial fastening length. If the boss width is shorter than this, the fastening surface is insufficient and the performance will not be achieved. Together with the installation space, confirm that the boss width satisfies the overall length and that working space for bolt heads and tools is secured.

  6. 6. Tighten Evenly to the Specified Tightening Torque

    This product: Clamping bolt tightening torque 82 N・m

    Because transmission performance depends on the clamping force of the clamping bolts, control the tightening torque (1 to 142 N·m for the listed products) with a torque wrench, and tighten evenly in several passes following a diagonal sequence. Also confirm in advance the required tool size and how to use the removal screw holes.

This guide was written by AI based on the listed products' documents and specification items.

About Friction joint and all products

Description

Consists of five components: front taper ring, outer ring, inner ring, rear taper ring, and clamping bolts. Secures the shaft and hub through frictional force.

Features

  • Delivers high transmission torque through frictional clamping
  • Easy and accurate positioning is possible
  • Loosening the clamping bolts releases the connection

Applications

  • Clamping of shafts and hubs
  • Positioning

FAQ

Q. What applications can the PSL-G-90 be used for?
A. It can be used for clamping shafts and hubs and for positioning.
Q. How does the PSL-G-90 clamping mechanism work, and how is the connection released?
A. It clamps the shaft and hub together by frictional force and is tightened with clamping bolts. Loosening the clamping bolts releases the connection.
Q. Which components make up the PSL-G-90?
A. It consists of five components: front taper ring, outer ring, inner ring, rear taper ring, and clamping bolts.
Q. What are the specifications and tightening torque of the PSL-G-90 clamping bolts?
A. The clamping bolts are 16-M10×25, and the tightening torque is 82 N・m. The removal screw holes are 3-M12.

Written by AI based on the content of the source documents.

Source documents

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