K Series Compression Coil Spring

Specifications

Kシリーズ model comparison

Compare 2 models in the same series by specification.

How to choose Compression Coil Springs

Points to check when selecting, with the values for this product (K Series Compression Coil Spring).

1. 1. Select by required load and spring rate

   The spring rate is the load required to deflect the spring by 1 mm. Multiplying the difference between installed and operating length by the spring rate gives the estimated load generated. Check whether the target load can be achieved within that deflection range, and narrow down candidates by spring rate value.

2. 2. Outside or inside diameter to fit the bore or shaft

   Check the outside diameter when the spring fits into a bore, and the inside diameter when it fits over a shaft. Because the coil diameter slightly increases under compression, allow clearance to the bore or shaft. The outside diameters of the listed products range from 3 to 11 mm.

3. 3. Match free length to installation space

   Free length is the length under no load. The difference from the installed length is the initial deflection, which determines the preload force. Slender springs are prone to buckling (bending sideways), so also consider whether a guide rod or guide bore is needed.

4. 4. Do not exceed maximum allowable deflection and load

   Confirm that the maximum operating stroke stays within the maximum allowable deflection and does not reach solid height. Using the spring beyond the allowable value can cause set (permanent deformation) or fatigue failure. Allow a margin in applications with repeated operation.

5. 5. Choose material to suit the environment

   This product: Material Stainless steel wire SUS304WPB

   SUS304WPB offers corrosion resistance and, in the listed examples, can be used at -30 to +200 °C. Piano wire and oil-tempered wire suit applications that benefit from high strength, but they rust easily, so check whether surface treatment or rust prevention is required.

6. 6. End shape that affects seating

   Springs with ground ends have flat seating surfaces, so the load acts straight along the axis and the spring is less likely to tilt. For applications such as dies and jigs that require stable posture, check whether grinding is specified.

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

About Compression Coil Springs and all products

Description

Cylindrical compression coil spring conforming to the Japan Spring Manufacturers' Association standard. Made of SUS304WPB stainless steel wire, with performance enhanced by low-temperature annealing. Operating temperature range: -30 °C to +200 °C. Permissible load is indicated as a guideline for use and is not a guaranteed service life.

FAQ

Q. What are the material and operating temperature range of the K Series compression coil spring?

A. The material is SUS304WPB stainless steel wire, and the operating temperature range is -30 °C to +200 °C. Performance is enhanced by low-temperature annealing.

Q. What are the wire diameter and winding direction of the K Series compression coil spring?

A. Wire diameters of 0.2 to 3.2 mm are available, and the winding direction is right-hand.

Q. Which standards does the K Series compression coil spring conform to?

A. It is a general-purpose cold-formed compression coil spring conforming to JIS standards. It is a cylindrical compression coil spring conforming to the Japan Spring Manufacturers' Association standard.

Q. Is the permissible load of the K Series compression coil spring a guaranteed value?

A. No. The permissible load is not a guaranteed service life and is indicated as a guideline for use.

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 3