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PPMA Show 2020

NEC, Birmingham(B40 1NT)

29/09/2020 - 01/10/2020

PPMA Show 2020 is the UK’s largest ever event dedicated to state-of-the-art processing and packaging (more)

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04/11/2020 - 05/11/2020

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Drives & Controls Exhibition

NEC, Birmingham(B40 1NT)

25/01/2021 - 27/01/2021

The show brings together key suppliers of state-of-the-art equipment representing the multi-tasking culture (more)

Constant force and wave springs added to portfolio

Constant force and wave springs added to portfolio
New constant force and Redux wave springs have been added to Lee Spring's portfolio of products, increasing its stock spring range to over 15,500 different types of spring. Custom designs in both springs are also available.

Manufactured from high yield 301 stainless steel strip, the constant force springs exert a near constant restraining force to resist uncoiling. This natural inbuilt stress resists load at an even rate and makes them suitable for use in retractor mechanisms. Common applications include counterbalance springs, car seat belts and cable retractors.

Constant force springs are tightly coiled on a drum and either the free end or the drum can be attached to the load. Four life cycle ranges are offered: 2500, 4000, 13000 and 25000 covering loads from 1.02 to 73.42N (0.23 to 15.50 lb). Lengths vary from 356 to 1542mm, thicknesses from 0.10 to 0.51mm and widths span the range 6.35 to 31.75mm.

Wave springs perform a similar function to compression springs but they take up approximately 50 percent less compressed height space due to their sine wave design which allows tangential contact. These springs also offer greater control of axial movement and consistent load transfer.

Produced in stainless steel type 17.7 PH, Lee Spring's Redux wave springs offer optimum performance in static or slightly dynamic applications where space is critical or where radial and axial tolerances are tight. Stock sizes range from rod sizes of 6.35 to 25.40mm to suit hold diameters from 9.53 to 31.77mm and in spring rates from 1.58 to 52.21N/mm (9.00 to 298 lb/in).
 

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