Standard Slit Collar / Standard Separate Collar

Specifications

How to choose Set collar

Points to check when selecting, with the values for this product (Standard Slit Collar / Standard Separate Collar).

1. 1. Select a bore matching the shaft diameter

   Select the bore d to match the applicable shaft diameter. Listed products cover a range of φ5 to 110. Because the combination of shaft tolerance and collar bore tolerance affects clamping force and ease of fitting, check the bore tolerance as well as the shaft diameter.

2. 2. Confirm the required axial holding force

   The allowable thrust load is the axial load that can be held without slipping axially, and listed products range from 2300 to 149040 N. Even with the same bore, values differ by type; for example, at φ30 there are products rated at 5400 N and 2300 N. Select a model with sufficient margin over the axial load applied.

3. 3. Also check rotational holding force

   This product: Permissible radial load 3.6〜449.5 N

   The allowable radial load is the torque that can be held without slipping in the rotational direction, and listed products range from 3.6 to 449.5 N·m. In applications where torque or rotational force acts on the collar, confirm that this value exceeds the operating conditions.

4. 4. Choose the clamping method based on how often it is adjusted

   For positions that change frequently, the lever type is convenient because no tools are required, but its holding force is lower than with bolt tightening. The listed lever-tightened thrust load is 780 to 2300 N. If the shaft must not be damaged, select the clamp or wedge type.

5. 5. Tighten to the recommended torque

   This product: Tightening torque 0.9 N·m

   The holding forces in the catalog are values obtained when tightened to the recommended tightening torque. Listed products range from 0.9 to 267.2 N·m, and the value varies greatly with bolt size. Using a torque wrench to observe the specified value helps prevent loosening and damage to the body.

6. 6. Select material and surface treatment suited to the environment

   S45C offers high strength and is protected against rust by black oxide or electroless nickel plating. For humid environments or areas with washdown, SUS304 is chosen, and for weight reduction, aluminum alloys such as A2017 are selected. However, holding force varies with material, so check it together with the load values.

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

About Set collar and all products

Description

Set collars with a slit structure that clamp and hold the shaft when tightened. The document lists experimental radial load values by bore and bolt size for each material: SCS (S45C and SUS304) and SCSS (S45C and SUS304). Tests were conducted by pressing a square bar against a round bar (hardened shaft) and measuring the load with a load testing machine. These values are not performance guarantees. In actual use, appropriate tightening torque must be managed, taking into account shaft accuracy, holding force, and other factors.

FAQ

Q. What are the tightening torque and allowable radial load of Standard Slit Collar (SCS)?

A. The tightening torque is 0.9 N·m. The allowable radial load ranges from 3.6 to 449.5 N. However, these are experimental values obtained by pressing a square bar against a round bar (hardened shaft) with a load testing machine, and they are not performance guarantees.

Q. Under what conditions were the allowable radial loads of SCS and SCSS measured?

A. The values are based on experiments in which a square bar was pressed against a round hardened shaft and the load was measured with a load testing machine. The document lists values by bore and bolt size for SCS (S45C and SUS304) and SCSS (S45C and SUS304).

Q. What should be noted when actually using SCS and SCSS?

A. Since these are not performance guarantees, appropriate tightening torque must be managed in actual use, taking into account shaft accuracy, holding force, and other factors.

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

Source documents

• Catalog セットカラー 技術資料 128 スタンダードスリットカラー / スタンダードセパレートカラーのラジアル 1 pages Open page 1
  Found on: https://www.iwata-fa.jp/technicaldata