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FAQs

Work from the part number on the existing buffer first. If that is not legible, measure the outer diameter, free height, and thread size (diameter and pitch) of the original. Note the mounting position too: cab, engine cradle, or attachment point, as each typically calls for a specific load rating and profile. For Dynapac and Caterpillar machines, the chassis number or serial plate allows the team to cross-reference fitment directly. Use Ask Simon on the relevant product page for an instant fitment check.

Profile affects deflection behaviour under load. Conical buffers offer progressive resistance, making them common on cab and engine mountings where controlled travel is needed. Cylindrical buffers provide a more linear response and suit lighter or more consistent load positions. Flanged buffers incorporate a wider base to spread load across a mounting face, useful where the bracket area is limited or the fixing is a single stud. Substituting one profile for another, even where the thread spec matches, risks taking the mount outside its designed deflection range.

Yes. Trade quantities are available for buyers running mixed fleets or managing scheduled service programmes. When ordering multiple positions across a machine or across several units, contact the team via WhatsApp 07754288583 or email [email protected] with your machine models, serial numbers and the buffer positions required. This allows the correct parts to be confirmed against each fitment before the order is placed, reducing the risk of returns.

Replace rather than re-inspect when you find visible surface cracking that has progressed beyond hairline checks, oil contamination that has caused the rubber to swell or delaminate, or permanent set where the buffer no longer returns toward its free height under normal conditions. A buffer that has bottomed out hard against its metal stop will show bruising or tearing at the contact face. At that point the surrounding bracket should also be checked for deformation before a replacement buffer is fitted.

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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Rubber Buffers & Bump Stops

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A buffer does a different job from a mount, and the difference decides the shelf: a mount carries a machine all day, a buffer waits for contact, absorbing impact and limiting travel when something moving reaches its stop. Doors, hatches, tipping bodies, machine slides and swinging arms all land on buffers day after day, and 517 of them on this shelf are picked by the same two numbers, the thread size and the maximum load in kilograms.

The male flat buffer is the working form of the shelf, a rubber pad on a threaded stud that screws into the frame exactly where the moving part lands, faced flat to spread the contact across the rubber. The codes pair diameter and height the way the bobbin range does, so a small door stop and a plant-machinery bump stop are the same design at different scales.

The thread runs M3 to M16 with M8, M10 and M12 the centre of the range, and the stated loads run from under ten kilograms on the small buffers to well past a hundred on the large forms, with similar sizes offered in more than one rating because the rubber compound does the grading: the load on the listing, not the diameter, says what a buffer will take.

A buffer is sized for what lands on it, with margin for the speed it lands at, because a fast contact loads harder than a slow one, and thread plus load typed into search narrows the shelf to a handful. A photo of the worn buffer, measured across and along, over WhatsApp on 07754288583 comes back with the replacement named, and the mounts that carry rather than catch sit one shelf over with the bobbins.

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FAQs

Work from the part number on the existing buffer first. If that is not legible, measure the outer diameter, free height, and thread size (diameter and pitch) of the original. Note the mounting position too: cab, engine cradle, or attachment point, as each typically calls for a specific load rating and profile. For Dynapac and Caterpillar machines, the chassis number or serial plate allows the team to cross-reference fitment directly. Use Ask Simon on the relevant product page for an instant fitment check.

Profile affects deflection behaviour under load. Conical buffers offer progressive resistance, making them common on cab and engine mountings where controlled travel is needed. Cylindrical buffers provide a more linear response and suit lighter or more consistent load positions. Flanged buffers incorporate a wider base to spread load across a mounting face, useful where the bracket area is limited or the fixing is a single stud. Substituting one profile for another, even where the thread spec matches, risks taking the mount outside its designed deflection range.

Yes. Trade quantities are available for buyers running mixed fleets or managing scheduled service programmes. When ordering multiple positions across a machine or across several units, contact the team via WhatsApp 07754288583 or email [email protected] with your machine models, serial numbers and the buffer positions required. This allows the correct parts to be confirmed against each fitment before the order is placed, reducing the risk of returns.

Replace rather than re-inspect when you find visible surface cracking that has progressed beyond hairline checks, oil contamination that has caused the rubber to swell or delaminate, or permanent set where the buffer no longer returns toward its free height under normal conditions. A buffer that has bottomed out hard against its metal stop will show bruising or tearing at the contact face. At that point the surrounding bracket should also be checked for deformation before a replacement buffer is fitted.

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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