Phone Phone 01926754100 Cart Cart
Fit guarantee icon
FIT GUARANTEE or Hassle-Free Returns
Quick delivery icon
QUICK DELIVERY On All Products Across UK
Customer support icon
GREAT SUPPORT 24/7 Support For Any Query
rating icon
TOP RATED Trusted by Our Customers
  • Ratings Standard Delivery: £5.49
  • Delivery Delivery Estimate: 3 to 5 working days
  • Save Extra Save Extra With 1 Offer
  • Ratings Compare With Similar Items
  • Use promo code "RMPK1" to get Additional 1% OFF

FREQUENTLY BOUGHT TOGETHER

Male Flat Buffer 40x30mm M10 45 Shore - 4030MFB25-45
Add
Sealey SN10 Steel Nut DIN 934 M10 Zinc Pack of 100
Add
Sealey FWA1021 Flat Washer M10 x 21mm DIN 125 Form A Zinc Pack of 100
Total Price: £31.69 ADD ALL three TO CART
Compare with Similar products
Technical Specification
PRODUCT NUMBER 2508MFB18-454030FFB10-453025FFB08-703020FFB06-603020FFB08-N60
Type Flat BufferFlat BufferFlat BufferFlat BufferFlat Buffer
Length 08mm30mm25mm20mm
Height 20mm
Size 25x08mm40x30mm30x25mm30x20mm
Deflection 27.56.2555
Diameter 25mm40mm30mm30mm
Diameter Range 11-25mm26-50mm26-50mm26-50mm
Length Range Up to 10mm26-50mm11-25mm11-25mm
Shore Hardness 45457060
Thread M6M10M8M6M8
Show More

Q 1. What are the key dimensions and load rating of the 4030MFB25-45?

A. The buffer measures 40mm diameter by 30mm height (D x H: 40x30mm) with an M10x25mm threaded stud (d x L). Maximum load rating is 116.5 kg with a deflection of 7.5 mm at that load.

Q 2. Why choose the 45 Shore A grade rather than a harder option?

A. At 45 Shore A, this is the softest grade in the 40x30mm Male Flat Buffer range. Softer grades produce greater deflection under load, which means better vibration isolation — particularly at lower frequencies — and more compliance for lighter or sensitive equipment. Harder grades carry higher loads with less movement but offer reduced isolation performance.

Q 3. What types of equipment and industries is this flat buffer suited to?

A. This buffer is suited to construction and off-highway equipment, agricultural machinery, industrial plant, elevators, commercial vehicles, power generation equipment, marine applications, and railway and mass transit systems — wherever shock absorption and vibration isolation are required between a component and a surface or secondary object.

Q 4. How does a male flat buffer work?

A. The rubber element absorbs and dissipates energy from impact or vibration, reducing the force transmitted to surrounding structures. The flat buffer geometry acts either as a bump stop against an impacting secondary object or as an elastic element in direct contact with a surface. Rubber-to-metal bonded construction maintains integrity across repeated deflection cycles.

Q 5. Are custom rubber compounds or stainless steel fixings available?

A. Yes. Oil-resistant and high-temperature rubber compounds, stainless steel metalwork, and additional or custom sizes are available on request. Contact PartsForMachines to discuss your specific application requirements.

Q 6. Is this buffer available in other hardness grades or sizes?

A. Yes. The 40x30mm Male Flat Buffer is also available in 60 Shore A (SKU: 4030MFB25-60) and 70 Shore A (SKU: 4030MFB25-70). Additional Male Flat Buffer sizes are available under SKUs 0808MFB06, 100100MFB44, 10030MFB41, 10040MFB44, 10050MFB41, and 10055MFB44.

Q 7. How is this buffer mounted or installed?

A. The M10x25mm threaded stud allows direct bolt fixing to the host structure, making installation straightforward without specialist tooling. The mount may be loaded in shear, compression, or a combination depending on the installation geometry.

Q 8. What if my order arrives damaged or incorrect?

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.

Q 9. Can I ask questions about this product before ordering?

A. Yes — WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility.

Q 10. Can I ask questions about this product before ordering?

A. Yes — WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility.

Get exclusive updates on offers & latest trends in construction industry

By sharing your email, you agree to our privacy policy & terms of service