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FAQs

You need four measurements before ordering: the thread size and form (metric M-thread or UNF imperial), the body diameter, the overall height, and the static load per mount point. Divide the machine's total supported weight by the number of mount points to get the per-mount load figure. Thread form is critical as a metric and UNF stud of similar nominal size will not interchange correctly. Each listing on PartsForMachines carries the dimensional and load data needed to make a direct match without guesswork.

Shore hardness governs the balance between vibration damping and positional stiffness. Softer compounds (approximately 40-50 Shore A) suit low-frequency, high-amplitude vibration sources such as single-cylinder engines and compressors. Harder compounds (60-70 Shore A) are preferred where the mounted component must hold a precise position alongside its damping duty, such as gearbox or motor mounts under directional load. If you are unsure which grade applies to your machine, use Ask Simon on the relevant product page for an instant fitment check.

Best practice is to replace in matched sets across each mounting arrangement, typically axle-paired or all four corners together. A single new mount will have different stiffness and deflection characteristics compared with aged units alongside it, which redistributes load unevenly and can accelerate wear on the remaining mounts. If budget is the constraint, replace at minimum the failed mount and its direct opposite. Keep a note of hours or calendar time at the change so the full set can be renewed together at the next scheduled interval.

Trade quantities are available across the bobbin mount range listed on PartsForMachines. Pack sizes vary by thread size and load rating, and some lines are available as individual units or in workshop packs. For volume pricing or to confirm pack options on a specific size, contact the team directly via WhatsApp 07754288583 or email [email protected] with the thread size, body diameter, and quantity required.

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 Bobbin Mounts

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A bobbin mount is picked on three facts, and every one of the 735 listings on this shelf states all three: the configuration of its ends, the thread size and the maximum load in kilograms it will carry.

The configuration is the first split, and there are three. Male-male bobbins carry a stud at both ends, bolting machine to frame through clearance holes. Female-female bobbins take a bolt into each end, for blind fixings and easy removal. Male-female bobbins carry one of each, stud into the frame and bolt into the machine or the reverse, the general purpose form between them. The machine's existing fixings decide it: what is already there on machine and frame, clearance holes for studs or tapped holes for bolts, picks the configuration before anything else is measured.

The thread runs from M3 to M20 with M10, M8 and M12 the working centre of the range, and the load rating does the real engineering work: each listing states its maximum load exactly, from a few kilograms on the small M4 bobbins to hundreds of kilograms on the large forms, and the machine's weight divided by its mounting points gives the load each bobbin must actually carry, picked with margin and matched so the rubber works in the middle of its range, where it isolates best.

The size pairs in the codes read diameter and height in millimetres, so a worn bobbin measured across and along finds its own replacement directly, and thread plus load typed into search narrows 735 mounts to a workable handful. A photo of the old mount with the machine's weight over WhatsApp on 07754288583 comes back with the bobbin named in the right configuration.

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FAQs

You need four measurements before ordering: the thread size and form (metric M-thread or UNF imperial), the body diameter, the overall height, and the static load per mount point. Divide the machine's total supported weight by the number of mount points to get the per-mount load figure. Thread form is critical as a metric and UNF stud of similar nominal size will not interchange correctly. Each listing on PartsForMachines carries the dimensional and load data needed to make a direct match without guesswork.

Shore hardness governs the balance between vibration damping and positional stiffness. Softer compounds (approximately 40-50 Shore A) suit low-frequency, high-amplitude vibration sources such as single-cylinder engines and compressors. Harder compounds (60-70 Shore A) are preferred where the mounted component must hold a precise position alongside its damping duty, such as gearbox or motor mounts under directional load. If you are unsure which grade applies to your machine, use Ask Simon on the relevant product page for an instant fitment check.

Best practice is to replace in matched sets across each mounting arrangement, typically axle-paired or all four corners together. A single new mount will have different stiffness and deflection characteristics compared with aged units alongside it, which redistributes load unevenly and can accelerate wear on the remaining mounts. If budget is the constraint, replace at minimum the failed mount and its direct opposite. Keep a note of hours or calendar time at the change so the full set can be renewed together at the next scheduled interval.

Trade quantities are available across the bobbin mount range listed on PartsForMachines. Pack sizes vary by thread size and load rating, and some lines are available as individual units or in workshop packs. For volume pricing or to confirm pack options on a specific size, contact the team directly via WhatsApp 07754288583 or email [email protected] with the thread size, body diameter, and quantity required.

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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