Posi-Lock PSL-K-C (Simple Rust-Proof Specification)

Specifications

How to choose Friction joint

Points to check when selecting, with the values for this product (Posi-Lock PSL-K-C (Simple Rust-Proof Specification)).

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

   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

Simple rust-proof version of the standard specification. The body is electroless nickel plated over S45C quenched and tempered equivalent material, and the clamping bolts are rust-preventive coated SCM435.

FAQ

Q. What materials and surface treatments are used for the body and bolts of the Posi-Lock PSL-K-C (Simple Rust-Proof Specification)?

A. The body is electroless nickel plated over S45C quenched and tempered equivalent material, and the clamping bolts are SCM435 with rust-preventive coating.

Q. What are the bolt nominal diameter and tightening torque range of the Posi-Lock PSL-K-C (Simple Rust-Proof Specification)?

A. The bolt nominal diameter is M4 to M6, and the bolt tightening torque is 2 to 14 N・m.

Q. What applications is the Posi-Lock PSL-K-C (Simple Rust-Proof Specification) suited for?

A. It can be used for fastening shafts and hubs, and in power transmission sections requiring rust resistance.

Q. What are the rust protection performance and transmission capacity features of the Posi-Lock PSL-K-C (Simple Rust-Proof Specification)?

A. It features simple rust protection by electroless nickel plating, high transmission torque, and easy and accurate positioning.

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

Source documents

• Manual ポジロック PSL-K 取扱説明書 8 pages Open page 1
  Found on: https://www.mikipulley.co.jp/friction-locking-devices/mechanical/