ISO Die Springs supplied by Metrol Springs

We are the sole European distributor for Tohatsu Die Springs

Die Springs

Die spring costs are a very small percentage of the total cost of the die itself. An effort to save a little on die springs is a mistake - one that can be very costly in lost time and labour.

A general rule to observe in spring selection is to always use as many springs as the die will accommodate to produce the required load with the least amount of deflection. Doing so increases the useful life of the spring and reduces the risk of spring failure. Failing to follow this simple guideline can result in downtime, loss of production and increased maintenance cost.

The more rapidly a spring works, the more attention must be paid to its fatigue limits. In slow moving dies or fixtures, it is possible to get good performance with springs operating near maximum deflection. As the working speed increases, the life expectancy of the spring at that deflection decreases.

Another approach when selecting a spring is to work back from the amount of operating travel to which the springs will be subjected, as indicated by the die layout. Select springs in the appropriate duty range which will operate efficiently at the required travel. Calculate the number of springs needed by dividing the load supplied by one spring into the total load required. Round the total number of springs to the next higher even number for balanced performance.

Superior Metals and Wire Profile
Features	Benefits
All Die springs are made from high tensile strength chromium alloy steels. Optimal wire cross section. Spring ends are ground square. Other raw materials are available for special conditions and environments.	Inherent toughness to withstand heavy load demands. Superior performance in high stress applications. Heat resistance up to 230°C. Readily available, cost efficient raw material. Consistent controlled metallurgy. Offers maximum design possibilities. Wire cross section provides optimum deflection and protection against failure due to excessive stress build-up. Square ends create reliable, flat, maximum load-bearing surface. Speciality materials available to meet customer requirements.
Dimensional Consistency
Features	Benefits
Dimensional requirements remain consistent and measurably the same from one batch of springs to the next.	Provides uniform spring performance. Ensures consistent rate recordings. Greater load accuracy at a given test height. Certainty that OD will work freely in prescribed hole and ID will work freely over prescribed rod. Metrol assurance of the highest production and quality standards. Reliable performance engineered into every Metrol die spring.
Longer Spring Life
Features	Benefits
Engineered to better withstand shock loading. Designed to endure constant high-speed deflections. Shot-peened to increase fatigue life. Less downtime.	Reliable, trouble-free performance. Increased fatigue life by as much as 30%. Reduced spring breakage. Uniform performance over a longer lifetime. More cost effective. Extra performance margins.
Excellent Deflection
Features	Benefits
Springs provide greater available travel to solid.	More travel in each spring. Higher load capacities. Increased fatigue life. Greater application flexibility. More reliable performance. Lower solid height.

Follow this link for further information on Die Springs. Metrol Springs can provide springs for strippers, pressure pads and other die components.

Metrol Springs Ltd 75 Tenter Road, Moulton Park, Northampton NN3 6AX United Kingdom	All trademarks acknowledged All Rights Reserved Copyright © Metrol Springs Ltd
	Tel: +44 (0)1604 499332 Fax: +44 (0)1604 493390 Email: info@metrol.com
http://www.metrol.com/products/die-springs-features.html	Made by The Net Effect

We are the sole European distributor for Tohatsu Die Springs

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Die Springs

Superior Metals and Wire Profile

Dimensional Consistency

Longer Spring Life

Excellent Deflection