Parallel Pin

Specifications

How to choose Pins & Shafts

Points to check when selecting, with the values for this product (Parallel Pin).

1. 1. Select the diameter tolerance to suit the mating hole and application

   The outer diameter tolerance determines the fit with the hole. h7 and g6 lean toward clearance fits and are used for rotating or sliding shafts and positioning parts that are inserted and removed, while m6 leans toward interference fits and is used for press-fit retention. Choose based on whether the part must move or be fixed, together with the tolerance of the mating hole (such as H7).

2. 2. Determine the diameter to match the bearing bore or hole size

   This product: Diameter d 3～10 mm

   The diameter should match the bore of the bearing or bushing being combined, or the dimensions of the machined hole. Listed products are mostly small-diameter, at 0.1 to 10 mm. Thinner diameters are more prone to deflection and bending, so confirm that the diameter is sufficient for the load and support span.

3. 3. Select the length based on support span and insertion depth

   Length is determined by the insertion depth and the distance between parts. Listed products range from 2 to 150 mm, and in some cases lengths over 50 mm are handled in separate series. Long, small-diameter combinations require attention to straightness and deflection.

4. 4. Choose the material according to the operating environment

   This product: Material SUS303

   SUS304 offers excellent corrosion resistance. SUS303 is a free-cutting stainless steel with added sulfur to improve machinability, and its corrosion resistance is slightly lower than that of SUS304. Select based on whether the environment involves moisture or chemicals, or whether machinability is the priority.

5. 5. Check hardness and surface treatment if wear is a concern

   In applications involving sliding or repeated insertion and removal, surface hardness affects wear life. Listed products include examples with a hardness of 300HV. If higher wear resistance is required, check for surface treatments such as hardening or plating.

6. 6. Check end face geometry related to insertability

   Chamfers or radii at the ends affect ease of insertion into holes and prevent galling during press fitting. Parallel pins are sometimes classified into types such as Type A and Type B based on end shape differences. Select the end face geometry to suit the assembly method.

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

About Pins & Shafts and all products

Description

Parallel pin standardized with reference to JIS B1354. Available in Type A and Type B shapes, with different diameter tolerances.

FAQ

Q. What are the material and diameter range of the parallel pin?

A. The material is SUS303, and the diameter d is mainly available in the range of 3 to 10 mm.

Q. What is the difference between Type A and Type B parallel pins?

A. Type A and Type B differ in shape, and their diameter tolerances are also different.

Q. Which standard is the parallel pin standardized with reference to?

A. It is a parallel pin standardized with reference to JIS B1354.

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

Source documents

• Catalog SUPER SPRING 総合カタログ 40 pages Open page 38