Sarabane

Specifications

How to choose Springs

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

1. 1. Select the Spring Rate from the Required Force

   The spring rate k is the load required to deflect the spring by 1 mm. Multiply it by the deflection at installation and at operation to confirm that the required force can be obtained. Listed products range widely from 0.007 to 9.91 N/mm, and a margin should be allowed for variation, including the spring rate tolerance (for example, ±10%).

2. 2. Keep Within the Maximum Load and Deflection Limits

   Using the spring beyond its maximum load or maximum deflection causes set (permanent deformation) or breakage. Confirm that the load at the maximum point of the operating stroke is within the maximum load, and for compression springs, that the solid height is not reached.

3. 3. Installation Space, Outside Diameter, and Free Length

   This product: Outer diameter D 6.0〜71.0 mm

   Check that the outside diameter fits the hole or housing, and that the inside diameter does not interfere with the shaft it passes over (applicable shaft diameter). The free length is the length under no load; the difference from the installed length is the initial deflection. Because the coil diameter changes under load, allow sufficient clearance.

4. 4. Select a Material Suited to the Operating Environment

   Piano wire SWP-A has high strength but is prone to rust, and many versions are supplied with rust-preventive oil treatment. For humid environments or environments subject to washing, stainless steel such as SUS304-WPB is a candidate. For strongly corrosive environments such as seawater, titanium is a candidate.

5. 5. Extension Springs: Initial Tension and Hook Shape

   Close-wound extension springs have initial tension, the load required before the spring begins to extend. For applications requiring movement with a small force, check the initial tension value. Also check that the hook shape, such as reverse loop, 90-degree, or 180-degree, matches how the mating part is engaged.

6. 6. Torsion Springs: Angle and Arm Direction

   For torsion springs, check the torque at the operating angle (torsion spring rate × angle) and the arm length. The winding direction should match the direction of twist, and it is common to use the spring in the direction that winds it up. For free-size products, also specify the bending direction.

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

About Springs and all products

Description

Products with inner diameter 3.2 to 36 mm and plate thickness 0.2 to 4.0 mm. Loads are shown at a deflection of 0.75h. Sold by bag.

FAQ

Q. What are the inner diameter, outer diameter, and plate thickness ranges for Sarabane springs?

A. Inner diameter is 3.2 to 36.0 mm, outer diameter D is 6.0 to 71.0 mm, and plate thickness t is 0.2 to 4.0 mm.

Q. What is the material and maximum load of Sarabane springs?

A. They are made of carbon steel, with a maximum load of 22.6 kN. The load is indicated at a deflection of 0.75h.

Q. Are Sarabane springs available in light-load and heavy-load categories?

A. Yes, they are available in light-load and heavy-load categories.

Q. What are the ordering and sales unit details for Sarabane springs?

A. Orders placed by 5:00 PM ship the same day. Sales are by bag.

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

Source documents

• Catalog スプリングネット 製品カタログ（ばね類） 178 pages Open page 150
  Found on: https://www.samini.co.jp/catalog_list/