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Posi-Lock PSL-D

ポジロック PSL-D / Miki Pulley (Official website) / Listed on page 1 of the document

Friction joint that clamps a shaft and hub together by frictional force. Tightening the clamping bolts evenly to the specified torque provides high transmission torque and accurate positioning. Sizes range from model 6 to 50.

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Posi-Lock PSL-D on page 1 of Miki Pulley "ポジロック PSL-D / PSL-D-C 取扱説明書"
Source: Miki Pulley「ポジロック PSL-D / PSL-D-C 取扱説明書」page 1
A reduced image of the relevant page is quoted from the document. Copyright belongs to Miki Pulley.Request removal

Specifications

Clamping bolt tightening torque 1 N・m

ポジロック PSL-D model comparison

Compare 3 models in the same series by specification.

Model Applicable shaft diameter Maximum Allowable Torque Maximum allowable thrust force Operating Ambient Temperature
ポジロック PSL-D This product — — — —
PSL-D φ6～50 mm 1760 N・m 70300 N -40～150 ℃
PSL-D(C) φ6～50 mm 1760 N・m 70300 N -40～150 ℃

How to choose Friction joint

Points to check when selecting, with the values for this product (Posi-Lock PSL-D).

  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 1 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 three components: outer ring, inner ring, and clamping bolts. For installation, wipe off the anti-rust oil from the exterior, then tighten the clamping bolts evenly in a diagonal sequence. Equipped with removal screw holes, allowing the clamping to be released. Reuse is possible, but reuse should be avoided if any abnormality is present. Must not be used beyond the specified transmission torque, and use in a slipping state of the clamped joint is prohibited.

Features

  • High transmission torque through frictional clamping
  • Easy and accurate positioning
  • Clamp release via removal screw holes
  • Available in standard type and simple anti-rust type (-C)

Applications

  • Clamping of shafts and hubs
  • Power transmission sections requiring positioning

FAQ

Q. What sizes are available for the Posi-Lock PSL-D?
A. Sizes range from model 6 to 50.
Q. What torque should be used to tighten the clamping bolts of the Posi-Lock PSL-D?
A. The clamping bolt tightening torque is 1 N・m. Install by tightening the clamping bolts evenly in a diagonal sequence.
Q. What components make up the Posi-Lock PSL-D?
A. It consists of three components: an outer ring, an inner ring, and clamping bolts.
Q. Can the Posi-Lock PSL-D be released and reused?
A. It is equipped with removal screw holes, allowing the clamping to be released. Reuse is possible, but avoid reuse if any abnormality has occurred.
Q. What applications is the Posi-Lock PSL-D suited for?
A. It is used for clamping shafts and hubs and in power transmission sections requiring positioning. Friction-based clamping provides high transmission torque, enabling easy and accurate positioning.

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

Source documents

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