Mackay M137082 Recessed Flange Isolator Type 40, Duro 60, 690 kg load

The Mackay Type 40 is a recessed flange isolator with a three-hole flange and a round body. Mackay makes this style for high load capacity combined with relatively large static deflections in the axial direction, using the rubber in both compression and shear (manufacturer-stated).

Two part numbers are listed: M137082 in Duro 60 (690 kg) and M137083 in Duro 70 (1080 kg). Both show 6.0 mm deflection and weigh 1.21 kg. The body is 80.4 mm high and ø106 mm in plan view, with three ø13.5 mm fixing holes in the flange (manufacturer-stated). Mackay lists it as supplied with overload and rebound washers (manufacturer-stated).

Where this product is used

• Supporting equipment that needs high load capacity with relatively large static deflections in an axial direction (manufacturer-stated).
• Installations where overload and rebound washers control and limit the movement of the suspended equipment under shock loads (manufacturer-stated).

Features

• Rubber is used in both compression and shear, which gives high loading for the size (manufacturer-stated)
• Supplied with overload and rebound washers (manufacturer-stated)
• Overload and rebound washers control and limit movement of the suspended equipment under shock loads (manufacturer-stated)
• Central fixing bolt is torque tightened to the recommended value (manufacturer-stated)

Common specifications

Key specifications

Figures are from the Mackay Vibration Isolators catalogue (Industrial Edition 09/2026). Dimensions are in millimetres. Mackay prints all properties as nominal and asks you to contact them for technical advice.

Selecting the right option

Choose by load first: the Duro 60 part carries 690 kg and the Duro 70 part 1080 kg, so work out the share of the machine weight each mount carries and pick the part that matches. Check your mounting surface against the three ø13.5 mm flange holes, and the 80.4 mm height for clearance. Mackay says the central fixing bolt should be torque tightened to its recommended value. Mackay prints all properties as nominal and asks you to contact them for technical advice, so confirm critical loads and shock conditions with them. Other Mackay recessed flange isolators for a lighter or heavier range are linked below.

Related products

Other Mackay recessed flange isolators: Mackay Recessed Flange Isolator Type 31, Mackay Recessed Flange Isolator Type 70 and Mackay Recessed Flange Isolator 172 x 150 x 100mm.