Mackay M154168 Flexible Bearing, 20 x 25 x 25 mm (D x C x B), 10 mm Bore
Available
Mackay flexible bearings are rubber bushes with an inner sleeve and outer shell, listed in section 14 of the Mackay Vibration Isolators catalogue with nominal dimensions, maximum torsion moment and angle, maximum axial and radial load, and weight. This listing has 20 sizes, from a 10 mm bore and 22 mm outer diameter to a 50 mm bore and 80 mm outer diameter.
Across the 20 part numbers, Mackay lists torsion MT max from 7 to 450 Nm, angle torsion max from 6.6 to 25 degrees and axial load FA max from 250 to 7800 N. Each part number is a separate size with its own limits, so choose from the table. Mackay also publishes installation tolerances and bracket limits for the housing.
Where this product is used
- Rubber bush mounting points that need torsional, axial and radial movement within the limits Mackay lists for each size.
Features
- Mackay lists maximum torsion moment (MT) and torsion angle for each size (manufacturer-stated)
- Maximum axial load (FA) and axial deflection (SA) are listed for each size (manufacturer-stated)
- Maximum radial load (FR) and radial deflection (SR) are listed for each size (manufacturer-stated)
- Housing limits are given for both a rigid housing interference fit and a rolled spring eye (manufacturer-stated)
Common specifications
| Specification | Detail |
|---|---|
| Number of sizes | 20 |
| Bore (A) | 10 to 50 mm |
| Outer diameter (B) | 22 to 80 mm |
| Sleeve length (C) | 25 to 110 mm |
| Outer shell length (D) | 20 to 100 mm |
| Torsion MT max | 7 to 450 Nm |
| Angle torsion max | 6.6 to 25 degrees |
| Axial load FA max | 250 to 7800 N |
| Weight | 0.034 to 1.4 kg |
Installation tolerances and bracket limits
Rigid housing interference fit (manufacturer-stated):
| O.D. bush diameter (mm) | Housing limit (mm) |
|---|---|
| Up to 22.0 | -0.038 to 0.063 |
| 23.7 to 39.6 | -0.050 to 0.076 |
| 41.2 to 50.8 | -0.063 to 0.088 |
| 52.3 to 78.0 | -0.076 to 0.113 |
| 80 to 125 | -0.076 to 0.127 |
Rolled spring eye (manufacturer-stated):
| O.D. bush diameter (mm) | Housing limit (mm) |
|---|---|
| Up to 22.0 | -0.25 to 0.50 |
| 23.7 to 28.5 | -0.40 to 0.66 |
| 30.1 to 34.9 | -0.63 to 0.88 |
| 36.4 to 41.2 | -0.71 to 0.96 |
| 42.8 to 53.9 | -0.86 to 1.11 |
| 55.5 to 70.0 | -1.01 to 1.39 |
Key specifications
| Mackay part number | Bore (A) | Outer diameter (B) | Sleeve length (C) | Outer length (D) | Torsion MT max (Nm) | Angle torsion max (deg) | Axial load FA max (N) | Axial load SA max (mm) | Radial load FR max (N) | Radial load SR max (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M154005 | 10 | 22 | 30 | 25 | 7 | 10 | 500 | 0.9 | 1875 | 0.25 | 0.034 |
| M154006 | 10 | 22 | 32 | 30 | 9 | 10 | 600 | 0.9 | 2250 | 0.25 | 0.038 |
| M154021 | 18 | 36 | 58.5 | 48.5 | 35 | 10 | 1420 | 1.6 | 7350 | 0.45 | 0.161 |
| M154040 | 25 | 50 | 56 | 50 | 34 | 6.6 | 2900 | 3 | 10000 | 1 | 0.261 |
| M154043 | 40 | 70 | 65 | 55 | 138 | 12 | 3320 | 3.6 | 20500 | 1.2 | 0.616 |
| M154044 | 25 | 50 | 85 | 80 | 49 | 14 | 7500 | 7.8 | 18000 | 1.7 | Not listed |
| M154061 | 50 | 80 | 110 | 100 | 450 | 9 | 7800 | 2.8 | Contact Mackay | Contact Mackay | 1.4 |
| M154073 | 20 | 45 | 70 | 64 | 55 | 15 | 2200 | 2.5 | 10000 | 0.85 | 0.285 |
| M154075 | 45 | 75 | 100 | 90 | 320 | 10 | 6300 | 3.1 | 35000 | 0.9 | 0.956 |
| M154077 | 12 | 32 | 59 | 55 | 19 | 16 | 1200 | 1.7 | 7000 | 0.65 | 0.131 |
| M154079 | 32 | 66 | 55 | 47 | 77 | 15 | 2450 | 3.9 | 8400 | 1.3 | 0.517 |
| M154080 | 16 | 32 | 30 | 22 | 14 | 10 | 750 | 1.3 | 1800 | 0.35 | 0.073 |
| M154082 | 24 | 45 | 55 | 44 | 55 | 11 | 1840 | 1.8 | 8650 | 0.6 | 0.265 |
| M154086 | 12.2 | 46.4 | 60 | 52 | 33 | 25 | 1100 | 2.6 | 3000 | 0.85 | 0.264 |
| M154091 | 45 | 80 | 45 | 45 | 80 | 11 | 1500 | 3.3 | 7800 | 2.3 | 0.522 |
| M154103 | 12 | 30 | 34 | 28 | 10 | 15 | 580 | 1.7 | 1750 | 0.55 | 0.064 |
| M154104 | 12 | 40 | 60 | 40 | 16 | 20 | 450 | 1.8 | 1200 | 1 | 0.198 |
| M154107 | 14 | 27 | 45 | 40 | 20 | 10 | 935 | 1.3 | 4400 | 0.35 | 0.08 |
| M154133 | 20 | 45 | 40 | 35 | 45 | 15 | 1600 | 4.8 | 5800 | 1.4 | 0.152 |
| M154168 | 10 | 25 | 25 | 20 | 8 | 10 | 250 | 1 | 2000 | 1 | Not listed |
Dimensions in millimetres. The letters follow the Mackay catalogue drawing: A is the bore, B the outer diameter, C the length of the inner sleeve and D the length of the outer shell. The load and angle columns use the Mackay headings (MT, FA, SA, FR, SR). Where the table shows Contact Mackay or Not listed, the catalogue figure is missing or looks inconsistent, so none is published. Mackay prints all properties as nominal and asks you to contact them for technical advice.
Selecting the right option
Start with the bore (A) and outer diameter (B) that fit your pin and housing, then check the torsion, axial and radial limits for that part number against your duty. Housing bore limits depend on the outer diameter: see the two tolerance tables. Each limit is a maximum, so choose a size with margin above your working loads. Mackay prints all properties as nominal and asks you to contact them for technical advice. Contact Mackay for critical loads.
Related products
Other Mackay flexible mountings: Mackay Cushion Connector, Mackay Annular Isolator and Mackay U-Flex Isolator.
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20 x 25 x 25
Model Number: M154168
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22 x 30 x 32
Model Number: M154080
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25 x 30 x 22
Model Number: M154005
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28 x 34 x 30
Model Number: M154103
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30 x 32 x 22
Model Number: M154006
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35 x 40 x 45
Model Number: M154133
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40 x 60 x 40
Model Number: M154104
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40 x 45 x 27
Model Number: M154107
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44 x 55 x 45
Model Number: M154082
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45 x 45 x 80
Model Number: M154091
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47 x 55 x 66
Model Number: M154079
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48.5 x 58.5 x 36
Model Number: M154021
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50 x 56 x 50
Model Number: M154040
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52 x 60 x 46.4
Model Number: M154086
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55 x 65 x 70
Model Number: M154043
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55 x 59 x 32
Model Number: M154077
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64 x 70 x 45
Model Number: M154073
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80 x 85 x 50
Model Number: M154044
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90 x 100 x 75
Model Number: M154075
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100 x 110 x 80
Model Number: M154061
