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FAQs

You need four measurements from the original spring: free length (uncompressed, end to end), outer diameter, wire diameter, and the number of active coils. If you also know the load or rate (force per unit of compression), include that. Measuring a fatigued spring can give a slightly short free length, so compare against the machine drawing or OEM spec where possible. These figures are what product listings on PartsForMachines carry, so matching them directly against the specification data on the product page is the most reliable cross-reference method.

Metrol compression springs are used primarily in precision tooling, datum-setting components, and sensor-mounting assemblies where consistent force and tight dimensional tolerances are both required. To find the correct Metrol spring, use the part number from the existing component or tooling drawing. If you do not have the part number, work from the free length, outer diameter, wire diameter, and required load rate. You can also use Ask Simon on the relevant product page for an instant fitment check if you have the core specification to hand.

Spring rate is the force required to compress the spring by one unit of length, typically expressed in N/mm. For a valve, the rate must match the original so that the valve opens and closes at the correct pressure. For a clamping fixture, the rate determines clamping force at a given deflection. If the original spring's rate is not marked, refer to the machine or fixture drawing. Fitting a spring with a higher or lower rate than specified will affect the operating parameters of the assembly and can cause premature failure of surrounding components.

Yes. Trade buyers running production lines or scheduled maintenance programmes can contact the team to discuss quantities. Where a specific spring is on a regular replacement cycle, ordering in volume avoids unplanned downtime. Reach out via WhatsApp 07754288583 or email [email protected] with the part reference or full specification and the quantity required, and the team will confirm availability and options. PartsForMachines operates as an Authorised Distributor and Seller, so trade account arrangements can be discussed directly.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and 'Check where we deliver' confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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Compression Spring

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Compression springs are the push-back component: coiled wire under axial load that stores energy when compressed and returns it on release. They appear in machinery wherever a controlled return force is needed, from spring-loaded plungers and pressure valves to tooling fixtures, jig clamps, die sets, and mechanical assemblies that cycle repeatedly under load. Getting the replacement right matters because a spring that is too soft loses its function quickly, and one that is too stiff can damage the mechanism it sits in.

Four measurements decide the fit: free length, outer diameter, wire diameter, and the load or rate the application requires. Metrol compression springs are among the more frequently searched on this site, reflecting their use in precision tooling and datum-setting applications where dimensional accuracy in the spring itself is as important as the force it delivers. Where you have the original part, matching those figures directly is the most reliable approach.

For trade buyers running production or maintenance schedules, it is worth knowing which springs in a machine or fixture are on a regular replacement cycle and ordering accordingly. Springs in high-cycle tooling, pressure-loaded valves, and clamping mechanisms tend to fatigue before surrounding components show wear. If the application involves a spring sitting in a corrosive environment or exposed to heat, material grade becomes a selection factor alongside the dimensional figures. PartsForMachines lists compression springs as an Authorised Distributor and Seller, and product pages carry the specification data needed to cross-reference against the original part.

For sizing confirmation or trade quantities, contact the team via WhatsApp 07754288583 or email [email protected].

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FAQs

You need four measurements from the original spring: free length (uncompressed, end to end), outer diameter, wire diameter, and the number of active coils. If you also know the load or rate (force per unit of compression), include that. Measuring a fatigued spring can give a slightly short free length, so compare against the machine drawing or OEM spec where possible. These figures are what product listings on PartsForMachines carry, so matching them directly against the specification data on the product page is the most reliable cross-reference method.

Metrol compression springs are used primarily in precision tooling, datum-setting components, and sensor-mounting assemblies where consistent force and tight dimensional tolerances are both required. To find the correct Metrol spring, use the part number from the existing component or tooling drawing. If you do not have the part number, work from the free length, outer diameter, wire diameter, and required load rate. You can also use Ask Simon on the relevant product page for an instant fitment check if you have the core specification to hand.

Spring rate is the force required to compress the spring by one unit of length, typically expressed in N/mm. For a valve, the rate must match the original so that the valve opens and closes at the correct pressure. For a clamping fixture, the rate determines clamping force at a given deflection. If the original spring's rate is not marked, refer to the machine or fixture drawing. Fitting a spring with a higher or lower rate than specified will affect the operating parameters of the assembly and can cause premature failure of surrounding components.

Yes. Trade buyers running production lines or scheduled maintenance programmes can contact the team to discuss quantities. Where a specific spring is on a regular replacement cycle, ordering in volume avoids unplanned downtime. Reach out via WhatsApp 07754288583 or email [email protected] with the part reference or full specification and the quantity required, and the team will confirm availability and options. PartsForMachines operates as an Authorised Distributor and Seller, so trade account arrangements can be discussed directly.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and 'Check where we deliver' confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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