Spring Conveyor

Specifications

How to choose Springs

Points to check when selecting, with the values for this product (R40-B24〜R61-B44).

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

   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

   This product: Material SWO-A (oil-tempered wire)

   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

For shaftless conveyors and granular material conveying feeders. Used with a chain drive system.

FAQ

Q. What applications can the Spring Conveyor (R40-B24 to R61-B44) be used for?

A. It is intended for shaftless conveyors and granular material conveying feeders, and is used for feed conveying and granular material conveying. It is used with a chain drive system.

Q. What are the features of the Spring Conveyor (R40-B24 to R61-B44) and what is the maximum manufacturable length?

A. It features a shaftless structure and can be manufactured up to 75 m in length. It is an oil-tempered wire shaftless conveyor coil used for long-distance conveying of feed and other materials.

Q. What are the material and dimensional ranges of the Spring Conveyor (R40-B24 to R61-B44)?

A. The material is SWO-A (oil-tempered wire). The outer diameter is 40 to 61 mm, the plate thickness and width are 3.5 to 4.5 × 8 to 8.3 mm, and the pitch is 40 to 45 mm. The length is 2 m.

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（ページ抜粋） 43 pages Open page 14
  Found on: https://www.samini.co.jp/catalog_list/