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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: 4020MFB25-45
Variations
Where maximum vibration isolation takes priority over restraint, the 4020MFB25-45 Male Flat Buffer delivers. Rated to a maximum load of 155.0 kg with a deflection of 5.0 mm, this 40 x 20 mm rubber-to-metal bonded unit is threaded M10 x 25 and formulated at 45 Shore A, the softest grade in this geometry. To yield greater movement under load and superior energy absorption at lower frequencies. At 45 Shore A, this grade is the natural choice where protecting sensitive or lightly loaded equipment from transmitted vibration matters more than limiting movement. The rubber-to-metal bonded construction ensures consistent energy dissipation across the service life of the mount, cushioning impact shocks and reducing the force transferred from a secondary object or a surface in direct elastic contact. It installs quickly and without specialist tooling, keeping maintenance time to a minimum. Designed for lighter-duty and vibration-sensitive applications across construction equipment, agricultural machinery, industrial plant, commercial vehicles, and elevators, this buffer is equally at home in marine, power generation, railway and mass transit, and automotive environments. The softer compound is particularly suited to lower-frequency isolation where compliance, not stiffness. Is the engineering requirement, and where operator comfort or the integrity of surrounding structures is a consideration. This buffer is available in firmer grades: 60 Shore A (4020MFB25-60) and 70 Shore A (4020MFB25-70) suit higher loads with reduced deflection.
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) | 45 |
|---|---|
| Body diameter D (mm) | 40 |
| Overall height H (mm) | 20 |
| Stud thread d | M10 |
| Stud length L (mm) | 25 |
| Max load (kg) | 155 |
| 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 | 3020MFB20-70 | 4035MFB23-60 | 4035FFB08-60 | 4035MFB25-60 | 2510MFB20-60 |
| Type | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer |
| Length | 20mm | 35mm | 35mm | ||
| Height | 35mm | 10mm | |||
| Size | 30x20mm | 40x35mm | 40x35mm | 25x10mm | |
| Deflection | 5 | 8.8 | 8.75 | 8.8 | 2.5 |
| Diameter | 30mm | 40mm | 40mm | ||
| Diameter Range | 26-50mm | 26-50mm | 26-50mm | ||
| Length Range | 11-25mm | 26-50mm | 26-50mm | ||
| Shore Hardness | 70 | 60 | 60 | ||
| Thread | M8 | M8 | M8 | M10 | M8 |
| Show More | |||||
A. The buffer measures 40 mm diameter by 20 mm height (D x H), with an M10 x 25 mm threaded stud (d x L). Maximum load is 155.0 kg and deflection under load is 5.0 mm.
A. Shore A hardness measures rubber stiffness. At 45 Shore A, this is the softest grade in the 40 x 20 mm flat buffer range. Softer grades give greater deflection and better vibration isolation at lower loads and lower frequencies, making this grade the preferred choice for sensitive or lightly loaded equipment where isolation efficiency is the priority.
A. The 4020MFB25-45 is suited to construction equipment, agricultural machinery, industrial plant, commercial vehicles, and elevators. It is also used in marine, power generation, railway and mass transit, and automotive applications where low-frequency vibration isolation and impact cushioning are required.
A. It works by absorbing and dissipating energy through the rubber-to-metal bonded construction. The rubber element cushions impact from a secondary moving object or acts as an elastic element in direct contact with a surface, reducing transmitted force and protecting surrounding structures and equipment.
A. Yes. Firmer grades for the same 40 x 20 mm geometry are available as the 4020MFB25-60 (60 Shore A) and 4020MFB25-70 (70 Shore A), which carry higher loads with less deflection. The wider range includes the 0808MFB06, 100100MFB44, 10030MFB41, 10040MFB44, 10050MFB41, and 10055MFB44 for different footprint and load requirements.
A. Yes — stainless steel metalwork and oil-resistant or high-temperature rubber compounds are available on request, as are additional and custom sizes. Contact the supplier to discuss 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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