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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.49 | 3 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
Where machinery demands firm restraint and load-bearing confidence, the 4028MM25-70 male-male bobbin mount delivers through its 70 Shore A rubber compound. Rated to a maximum load of 89.0 kg with a controlled deflection of just 2.4 mm, this 40 x 28 mm bobbin with M10 x 25 threaded studs is built for applications where movement must be minimised and the mounting must hold firm under sustained or impact loading. Constructed with rubber-to-metal bonded technology, the 4028MM25-70 provides reliable vibration and shock attenuation in shear, compression, or a combination of both. The 70 Shore A hardness grade is the firmest in this geometry's range, making it the appropriate choice when softer grades would yield too much deflection under heavier or shock-prone duty cycles. It improves machinery lifespan, protects surrounding structures, and contributes to operator comfort in demanding environments. The dual male-male stud configuration allows direct inline mounting between chassis and equipment without additional hardware. Applications across the supported industries include diesel engines, generator sets, exhaust mountings, industrial machinery and equipment, and installations within construction and off-highway, power generation, marine, railway and mass transit, automotive, and agricultural sectors. Where loads approach the upper bound of this bobbin's rated capacity, the firm grade ensures the mount resists excessive deflection and maintains positional integrity. This bobbin is available in additional Shore A hardness grades to suit lighter or moderate duties: 45 Shore (4028MM25-45) and 60 Shore (4028MM25-60). Other geometries within the male-male range include 0808MM06, 100100MM44, 10030MM44, 10040MM44, 10050MM44, and 10055MM44.
About PartsForMachines:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Hardness (Shore A) | 70 |
|---|---|
| Body diameter D (mm) | 40 |
| Overall height H (mm) | 28 |
| Stud thread d | M10 |
| Stud length L (mm) | 25 |
| Max load (kg) | 89 |
| Deflection (mm) | 2.4 |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £5.49
Delivery Estimate: 3 to 5 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | 6045MM25-45 | 6045MM37-45 | 4030MF23-70 | 4030MF25-70 | 4020FF08-70 |
| Type | Bobbin Mount | Bobbin Mount | Bobbin Mount | Bobbin Mount | Bobbin Mount |
| Length | 45mm | 45mm | 30mm | 30mm | 20mm |
| Size | 60x45mm | 60x45mm | 40x30mm | 40x30mm | 40x20mm |
| Deflection | 4 | 4 | 2.6 | 2.6 | 1.2 |
| Diameter | 60mm | 60mm | 40mm | 40mm | 40mm |
| Diameter Range | 51-100mm | 51-100mm | 26-50mm | 26-50mm | 26-50mm |
| Length Range | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 11-25mm |
| Shore Hardness | 45 | 45 | 70 | 70 | 70 |
| Thread | M10 | M12 | M8 | M10 | M8 |
| Show More | |||||
A. The 4028MM25-70 is rated to a maximum load of 89.0 kg with a deflection of 2.4 mm under that load, reflecting its 70 Shore A firm rubber compound.
A. A 70 Shore A rating is the firmest grade available in this bobbin geometry. It carries higher loads with less movement than softer grades, making it suitable for heavier or shock-prone applications where positional stability is a priority.
A. The bobbin body is 40 mm diameter by 28 mm height. Both threaded studs are M10 with a 25 mm shank length.
A. The 4028MM25-70 may be loaded in shear, compression, or a combination of both, giving flexibility in mounting orientation across different installation configurations.
A. Supported applications include diesel engines, generator sets, exhaust mountings, industrial machinery and equipment, and installations in construction and off-highway, power generation, marine, railway and mass transit, automotive, and agricultural sectors.
A. Yes. The same bobbin body is available in 45 Shore A (SKU 4028MM25-45) for greater deflection and improved isolation at lower loads, and 60 Shore A (SKU 4028MM25-60) for a general-purpose medium grade.
A. Yes. Stainless steel metal inserts and oil-resistant or high-temperature rubber compounds are available on request, as are custom sizes.
A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN).
A. In-stock orders placed before 14:30 Monday to Friday are usually dispatched the same day.
A. In-stock orders placed before 14:30 Monday to Friday are usually dispatched the same day.
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