Posi-Lock PSL-K Standard Type

Specifications

ポジロック PSL-K model comparison

Compare 4 models in the same series by specification.

How to choose Shaft coupling

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

1. 1. Allow Margin for Rated Torque

   Select a size whose continuous operating torque is equal to or greater than the load torque transmitted during continuous operation. Check by multiplying the motor's rated torque by a factor corresponding to the frequency of starts and stops and load fluctuations. Listed products have a rated torque of 0.5 to 150 N·m.

2. 2. Verify Peak Torque at Startup Against Maximum Allowable Torque

   This product: Maximum Allowable Torque 750 N・m

   Large instantaneous torques occur during rapid acceleration and deceleration of servo motors, startup, and emergency stops. Confirm that these peak values do not exceed the maximum allowable torque. For taper clamping elements, this value serves as a guide to the torque the clamp can hold.

3. 3. Match Shaft Diameter to Machinable Bore Diameter

   Confirm that the driving and driven shaft diameters fall within the applicable shaft diameter range. When machining pilot-bored products, confirm the bore is within the maximum bore diameter d. If the two shaft diameters differ, check that both hubs have matching bores.

4. 4. Do Not Exceed Maximum Rotational Speed

   Confirm that the maximum operating speed is at or below the coupling's maximum rotational speed. Larger outer diameters are more susceptible to centrifugal force, and the allowable speed tends to be lower. Listed products range from 3600 to 18000 min-1.

5. 5. Check Allowable Mounting Misalignment

   Confirm that the parallel misalignment expected from assembly accuracy is within the maximum allowable eccentricity (0.1 to 0.4 mm for listed products). Compare angular misalignment against the maximum allowable declination (0.5 to 1°). Exceeding these allowances causes early wear of the buffer and increased bearing load.

6. 6. Select Hub Material and Inertia for Responsiveness

   Aluminum alloy hubs are lightweight, low-inertia, and less likely to impair the responsiveness of servo and stepping motors. Cast iron hubs have high inertia and tend to provide stable rotation, and nickel-plated products offer corrosion resistance. In environments requiring rust prevention, also check whether surface treatment is applied.

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

About Shaft coupling and all products

Description

Clamps the shaft and hub completely through the wedge action of the tapered surfaces of the outer sleeve and inner sleeve. The groove in the inner sleeve enhances the wedge effect, enabling high transmission torque. Keyway machining is not required, and the shaft and hub can be assembled with high concentricity.

FAQ

Q. Which shaft diameters does the Posi-Lock PSL-K Standard Type (model PSL-K) accommodate?

A. The applicable shaft diameter is φ6 to 42 mm.

Q. What are the maximum allowable torque and maximum allowable thrust force of the PSL-K?

A. The maximum allowable torque is 750 N・m, and the maximum allowable thrust force is 36000 N.

Q. What ambient operating temperature range can the PSL-K be used in?

A. The ambient operating temperature range is -40 to 150 ℃.

Q. How does the PSL-K clamp the shaft and hub, and is keyway machining necessary?

A. It clamps the shaft and hub through the wedge action of the tapered surfaces. Keyway machining is not required.

Q. Can the PSL-K be assembled with high shaft-to-hub concentricity, and what applications is it suited for?

A. It can be assembled with high shaft-to-hub concentricity. It is used for shaft-to-hub clamping and power transmission sections.

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

Source documents

• Catalog POSI LOCK PSL-G / PSL-D 設計上の確認事項・製品仕様 24 pages Open page 4
  Found on: https://www.mikipulley.co.jp/friction-locking-devices/mechanical/