Mackay M211160 Square Plate Isolator, Duro 60, 832 to 4064 kg

The Mackay M211160 is a square plate isolator in Duro 60 with a 181 x 181 mm plate, 76 mm overall height and compression load figures that run from 832 kg at 2.0 mm deflection to 4064 kg at 8.0 mm. Mackay describes its plate isolators as an uncomplicated, straightforward-design way to control vibration and shock, designed to protect equipment and machinery from damaging vibration and shock and with an excellent capacity for energy control (manufacturer-stated).

On the catalogue drawing the plate is 8 mm thick and the four mounting holes are 13 mm in diameter on 146 mm spacing. The part weighs 5.5 kg. Mackay also prints shear figures, from 79 kg at 2.0 mm to 341 kg at 8.0 mm of shear deflection. It sits between the M211060 and the M211260 in the Mackay 181 mm square plate series, with a higher compression load than the M211060 at the same deflection and a lower one than the M211260.

Where this product is used

• Controlling vibration and shock in equipment and machinery where a straightforward isolator design is wanted (manufacturer-stated).
• Mackay lists printing presses, road rollers, vibratory feeders, shipping containers, crushers, shaker units and industrial machinery as applications for its plate isolators (manufacturer-stated).

Features

• Square 181 x 181 mm plate with four mounting holes of 13 mm diameter (manufacturer-stated)
• Durometer 60 with a 76 mm overall height and an 8 mm plate thickness (manufacturer-stated)
• Compression load 832 kg at 2.0 mm to 4064 kg at 8.0 mm (manufacturer-stated)
• Shear load 79 kg at 2.0 mm to 341 kg at 8.0 mm of shear deflection (manufacturer-stated)
• Designed to protect equipment and machinery from damaging vibration and shock (manufacturer-stated)

Common specifications

Key specifications

Figures are from the Mackay Vibration Isolators catalogue (Industrial Edition 09/2026), which prints a compression and a shear column for each row. Mackay prints "All properties nominal, contact Mackay for technical advice" on these tables, so treat the figures as nominal. The earlier Industrial Rubber Technology catalogue gives the 4,064 kg compression load at 8 mm for this part but lists a single shear figure of 381 kg at 12 mm, which is beyond the 8.0 mm top row of the newer table.

Selecting the right option

Choose the isolator by the compression load each mount carries and the deflection you want: read across the table to the row that matches, and keep the loaded deflection within the printed 2.0 to 8.0 mm. Then check the plate against your steelwork: 181 mm square, four holes of 13 mm diameter, 146 mm spacing. Mackay says all properties are nominal and asks you to contact it for technical advice (manufacturer-stated). For loads near the top of the range, or where shear and compression act together, confirm with Mackay first (manufacturer-stated). The M211060 and M211260 are linked below if your load falls outside 832 to 4064 kg.

Related products

Other Mackay 181 mm square plate isolators: Mackay M211260 Square Plate Isolator 9476kg and Mackay Square Plate Isolator. Larger and smaller plate isolators: Mackay Square Plate Isolator M148208, Mackay M211275SAW150 Square Plate Isolator 17700kg and Mackay M212065 Square Plate Isolator 1,765kg.