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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 | £3.99 | 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 |
Product Number: 4020MFB25-70
Variations
Rated to a maximum load of 333.5 kg with a controlled deflection of just 5.0 mm, this 40 x 20 mm Male Flat Buffer with M10 x 25 stud is engineered for applications where heavier loads must be held firmly and movement kept to a minimum. The 70 Shore A rubber compound delivers the firm resistance needed where impact energy is high and structural restraint is a priority. Rubber-to-metal bonded construction ensures reliable energy absorption between the rubber element and its metal stud, keeping the assembly intact under repeated shock and compression loading. The flat buffer geometry makes installation straightforward, acting either as a direct-contact elastic element against a surface or as a secondary stop that cushions moving components. Custom options, including stainless steel metalwork and oil-resistant or high-temperature rubber compounds, are available on request. At 70 Shore A, this grade is particularly suited to commercial vehicles, agricultural equipment, and construction machinery where dynamic shock loads are significant and positional drift cannot be tolerated. It is equally at home in power generation plant, marine installations, railway and mass transit equipment, and military and defence applications that demand firm, high-load buffering. The buffer improves machinery lifespan, protects surrounding structures, and contributes to operator comfort under heavy-duty operating cycles. This product is available in alternative hardness grades for the same 40 x 20 mm geometry: 45 Shore A (4020MFB25-45) for maximum deflection and sensitive isolation, and 60 Shore A (4020MFB25-60) for general-purpose mounting.
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) | 20 |
| Stud thread d | M10 |
| Stud length L (mm) | 25 |
| Max load (kg) | 333.5 |
| Deflection (mm) | 5 |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £3.99
Delivery Estimate: 3 to 5 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | 5020MFB28-45 | 5021MFB25-45 | 4020FFB08-70 | 4020FFB10-70 | 6045FFB12-45 |
| Type | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer |
| Length | 20mm | 21mm | 20mm | 20mm | 45mm |
| Size | 50x20mm | 50x21mm | 40x20mm | 40x20mm | 60x45mm |
| Deflection | 5 | 5.3 | 5 | 5 | 11.25 |
| Diameter | 50mm | 50mm | 40mm | 40mm | 60mm |
| Diameter Range | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 51-100mm |
| Length Range | 11-25mm | 11-25mm | 11-25mm | 11-25mm | 26-50mm |
| Shore Hardness | 45 | 45 | 70 | 70 | 45 |
| Thread | M10 | M10 | M8 | M10 | M12 |
| Show More | |||||
A. The 4020MFB25-70 Male Flat Buffer is rated to a maximum load of 333.5 kg and a deflection of 5.0 mm at that load.
A. The buffer body measures 40 mm diameter by 20 mm height, with an M10 x 25 mm male stud.
A. At 70 Shore A, this grade carries higher loads with less movement than the 45 or 60 Shore A variants. It is the correct choice where heavier loads, significant impact shock, or firm positional restraint are required, rather than maximum isolation or deflection.
A. These buffers are used in construction equipment, agricultural machinery, commercial vehicles, industrial machinery, elevators, power generation plant, marine installations, railway and mass transit equipment, and military and defence applications.
A. The rubber element works by absorbing and dissipating impact energy. It can act as a direct-contact elastic element against a surface or as a secondary stop cushioning external moving components, with the rubber-to-metal bonded construction maintaining assembly integrity throughout.
A. Yes — the 40 x 20 mm Male Flat Buffer is also available in 45 Shore A (SKU 4020MFB25-45) for greater deflection and lower-load isolation, and 60 Shore A (SKU 4020MFB25-60) for general-purpose mounting.
A. Yes — stainless steel metalwork and oil-resistant or high-temperature rubber compounds are available on request, as are additional and custom sizes.
A. WhatsApp us on 07754 288583 with photos of the item and packaging, and we will resolve the issue in line with our returns policy.
A. Yes — WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility.
A. Yes — WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility.
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