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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: 4030MF23-70
Variations
Carrying up to 89.0 kg per mounting with a controlled deflection of just 2.6 mm, the Male-Female Bobbin Mount 4030MF23-70 is the firmest 40x30 mm option in the M8 bobbin range, engineered for applications where the mounted item must be held securely under sustained or intermittent heavy load. The 70 Shore A rubber hardness delivers the highest load capacity of the three available hardness grades in this geometry, making it the right choice where movement must be tightly governed and structural restraint takes priority over isolation. Rubber-to-metal bonded construction pairs a male stud thread (M8 x 23 mm insertion length) with a female M8 receiving thread, allowing direct inline mounting in compression, shear, or combined-loading configurations. The firm compound resists shock and impact, absorbing peak forces whilst limiting the travel that softer grades permit, an important characteristic where clearances are tight or where adjacent components cannot tolerate relative movement. Improved machinery lifespan and protection of surrounding structures are recognised benefits of the rubber-to-metal bonded design. At the 70 Shore A grade, this mount is suited to diesel engines, generator sets, industrial machinery and equipment, and exhaust mountings operating under heavier static or dynamic loads. Industries including construction and off-highway, power generation, marine, agriculture, and automotive all apply this grade where firm restraint rather than maximum isolation is the governing requirement. The 40 x 30 mm envelope keeps the overall footprint compact enough for space-constrained installations even at elevated load ratings.
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| Hardness (Shore A) | 70 |
|---|---|
| Body diameter D (mm) | 40 |
| Overall height H (mm) | 30 |
| Stud thread d1 | M8 |
| Stud length L (mm) | 23 |
| Diameter / thread d2 (mm) | M8 |
| Max load (kg) | 89 |
| Deflection (mm) | 2.6 |
| 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 | 4028MM25-70 | 6045MM25-45 | 6045MM37-45 | 4020FF08-70 | 6550MF37-45 |
| Type | Bobbin Mount | Bobbin Mount | Bobbin Mount | Bobbin Mount | Bobbin Mount |
| Length | 28mm | 45mm | 45mm | 20mm | 50mm |
| Size | 40x28mm | 60x45mm | 60x45mm | 40x20mm | 65x50mm |
| Deflection | 2.4 | 4 | 4 | 1.2 | 4.5 |
| Diameter | 40mm | 60mm | 60mm | 40mm | 65mm |
| Diameter Range | 26-50mm | 51-100mm | 51-100mm | 26-50mm | 51-100mm |
| Length Range | 26-50mm | 26-50mm | 26-50mm | 11-25mm | 26-50mm |
| Shore Hardness | 70 | 45 | 45 | 70 | 45 |
| Thread | M10 | M10 | M12 | M8 | M12 |
| Show More | |||||
A. The 4030MF23-70 has a maximum load rating of 89.0 kg and a deflection of 2.6 mm, making it the highest-load, lowest-deflection option among the 40x30 mm M8 bobbin grades.
A. The mount features a male stud of M8 with an insertion length of 23 mm (d1 x L: M8 x 23) and a female receiving thread of M8 (d2: M8), with an overall body size of 40 mm diameter by 30 mm height.
A. The mount may be loaded in shear, compression, or a combination of both, providing flexibility across a range of installation orientations.
A. The 70 Shore A firm grade is best suited to applications requiring firm restraint under higher loads, such as diesel engines, generator sets, industrial machinery, and exhaust mountings where movement must be tightly limited and shock or impact resistance is a priority.
A. Industries served include construction and off-highway, agriculture, power generation, marine, railway and mass transit, automotive, and military and defence.
A. Yes — the same 40x30 mm M8 bobbin is available in 45 Shore A (4030MF23-45) and 60 Shore A (4030MF23-60) for applications requiring greater deflection and improved isolation at lower loads.
A. Stainless steel metalwork, oil-resistant rubbers, high-temperature rubber compounds, and custom sizes are available on request.
A. Every product comes with a different guarantee and warranty. Warranty details are shown in the product tech specs or datasheet where available.
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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