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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: 4030MFB23-70
Variations
Carrying a maximum load of 242.5 kg with a controlled deflection of just 7.5 mm, the 4030MFB23-70 is a 40 x 30 mm Male Flat Buffer built for applications where firm restraint and minimal movement matter most. Its 70 Shore A rubber hardness places it at the firm end of the hardness range, making it the appropriate choice wherever heavier loads, impact shock, or positional stability are the primary concerns rather than isolating fine vibration. The rubber-to-metal bonded construction ensures the rubber element remains securely coupled to its M8 x 23 male stud throughout repeated loading cycles. This bonding is what allows the buffer to absorb and dissipate energy reliably under compression, in shear, or under combined loading, without the rubber separating from the metal interface under stress. The flat profile keeps installation straightforward, the stud threads directly into a tapped hole and the flat face seats cleanly against a mating surface, with no specialist tooling required. At 70 Shore A, this buffer is suited to construction equipment, industrial machinery, agricultural plant, commercial vehicles, and elevators operating under conditions that demand the rubber holds firm. Where an application involves a secondary moving component striking a fixed surface, or where an elastic element must maintain a structure in position under load, the firm grade limits unwanted travel and keeps the assembly controlled.
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) | 30 |
| Stud thread d | M8 |
| Stud length L (mm) | 23 |
| Max load (kg) | 242.5 |
| Deflection (mm) | 7.5 |
| 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 | 4020FFB08-60 | 4020FFB10-60 | 5030MFB25-45 | 4030FFB10-70 | 4020MFB23-60 |
| Type | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer | Flat Buffer |
| Length | 20mm | 20mm | 30mm | 30mm | |
| Height | 20mm | ||||
| Size | 40x20mm | 40x20mm | 50x30mm | 40x30mm | 40x20mm |
| Deflection | 5 | 5 | 7.5 | 7.5 | 5 |
| Diameter | 40mm | 40mm | 50mm | 40mm | |
| Diameter Range | 26-50mm | 26-50mm | 26-50mm | 26-50mm | |
| Length Range | 11-25mm | 11-25mm | 26-50mm | 26-50mm | |
| Shore Hardness | 60 | 60 | 45 | 70 | |
| Thread | M8 | M10 | M10 | M10 | M8 |
| Show More | |||||
A. This buffer has a maximum load capacity of 242.5 kg and a deflection of 7.5 mm. The 70 Shore A hardness grade is responsible for this combination — a firmer rubber carries a higher load whilst limiting movement, making it well suited to heavy-duty and shock-prone applications.
A. Shore A is the standard scale for measuring rubber hardness. At 70 Shore A, this is a firm-grade rubber. Compared with softer grades of the same geometry, it offers greater resistance to deflection under load, meaning the assembly moves less under a given force. This is the appropriate choice where positional stability and load-bearing capacity are priorities rather than maximum vibration isolation.
A. The buffer body measures 40 mm diameter by 30 mm height. The male stud is M8 with a 23 mm shank length. These dimensions allow direct installation into a tapped M8 hole with the flat rubber face bearing against the mating surface.
A. The rubber-to-metal bonded construction allows the buffer to operate under compression, shear, or a combination of both. The bonded interface keeps the rubber element coupled to the metal stud throughout repeated loading cycles, including impact and shock loads from external moving components.
A. Male Flat buffers are used in construction equipment, industrial machinery, agricultural equipment, elevators, and commercial vehicles. At 70 Shore A, this firm-grade variant is particularly suited to applications involving heavier loads or shock impact where minimal deflection is required. Industries served include off-highway construction, agriculture, power generation, marine, railway and mass transit, automotive, and military and defence.
A. Yes. The 40 x 30 mm, M8 x 23 geometry is also offered in 45 Shore A (4030MFB23-45) and 60 Shore A (4030MFB23-60) for applications requiring greater deflection or lighter load capacity. Other sizes in the Male Flat Buffer family include 0808MFB06, 100100MFB44, 10030MFB41, 10040MFB44, 10050MFB41, and 10055MFB44. Custom sizes, stainless steel metal components, and oil-resistant or high-temperature rubber compounds are also available on request.
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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