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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: 4020FFB08-70
Variations
Engineered to hold machinery firmly under demanding conditions, the 4020FFB08-70 is a 40x20mm female flat buffer with an M8 thread and a 70 Shore A hardness rating, the firmest grade in the 40x20mm M8 range. With a maximum load capacity of 327.0 kg and a controlled deflection of just 5.00 mm, this buffer is specified where structural restraint and minimal movement take priority over isolation. Rubber-to-metal bonded construction allows the buffer to work in compression, shear, or a combination of both, absorbing and dissipating impact energy from external moving components whilst protecting surrounding structures and extending overall machinery lifespan. The female thread fixing provides a secure, direct interface for mounting into fabricated brackets or machine frames, keeping installation straightforward across many assemblies. At 70 Shore A, this buffer is suited to applications where heavier loads, shock and impact, and positive restraint are the primary concerns. Typical deployment spans construction and off-highway equipment, commercial vehicles, power generation plant, marine installations, agricultural machinery, and railway and mass transit systems, wherever a mount must carry substantial load without significant give. Custom options including oil-resistant and high-temperature rubber compounds, and stainless steel metal parts, are available on request for specialist environments. For lighter-duty or higher-isolation requirements, this buffer is also available in softer Shore grades: the 4020FFB08-45 (45 Shore A) offers maximum deflection and vibration isolation, whilst the 4020FFB08-60 (60 Shore A) suits general-purpose mid-load applications.
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 |
| Fixing thread / bolt size d | M8 |
| Max load (kg) | 327 |
| 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 | 4020MFB23-70 | 4020MFB25-70 | 5045FFB10-70 | 5020MFB28-45 | 5045MFB25-70 |
| Type | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer |
| Length | 20mm | 20mm | 45mm | 20mm | 45mm |
| Size | 40x20mm | 40x20mm | 50x45mm | 50x20mm | 50x45mm |
| Deflection | 5 | 5 | 11.25 | 5 | 11.3 |
| Diameter | 40mm | 40mm | 50mm | 50mm | 50mm |
| Diameter Range | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 26-50mm |
| Length Range | 11-25mm | 11-25mm | 26-50mm | 11-25mm | 26-50mm |
| Shore Hardness | 70 | 70 | 70 | 45 | 70 |
| Thread | M8 | M10 | M10 | M10 | M10 |
| Show More | |||||
A. This female flat buffer has a maximum load capacity of 327.0 kg and a deflection of 5.00 mm, making it the firmest option in the 40x20mm M8 flat buffer range — designed to carry high loads with minimal movement.
A. A 70 Shore A rating indicates a firm rubber compound. At this hardness, the buffer carries higher loads with less deflection compared with softer grades, prioritising structural restraint and shock resistance over vibration isolation. It is best suited to applications involving heavier loads, impact forces, or where the mounted item must be held firmly in place.
A. This firm-grade buffer is used across construction and off-highway equipment, commercial vehicles, power generation plant, marine installations, agricultural machinery, and railway and mass transit systems — wherever positive load restraint and shock absorption under heavy loading are required.
A. The rubber-to-metal bonded construction allows the buffer to operate in compression, shear, or a combination of both, absorbing energy from external moving components and dissipating it through the rubber element. This reduces impact force transmitted to the host structure, protects surrounding components, and improves machinery lifespan.
A. Yes. The same geometry is available as the 4020FFB08-45 (45 Shore A) for maximum deflection and vibration isolation, and the 4020FFB08-60 (60 Shore A) for general-purpose mid-load applications. Larger flat buffer formats are also available — see 100100FFB16, 10030FFB16, 10040FFB16, 10050FFB16, 10055FFB16, and 10060FFB16.
A. Yes. Stainless steel metal components and oil-resistant or high-temperature rubber compounds are available on request, as are additional and custom sizes. Contact us to discuss your specific requirements.
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.
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