
R-SERIES
Radial Bumper Solutions
/// R-Series Overview
Compressed radially, these dampers provide a longer, softer deceleration. Easily mounted to any surface, these general-purpose dampers can handle off-axis loads and high vibration conditions.
- Maximum energy absorption ranges from 15 to 3,750 in-lbs. [2 to 424Nm]
- Maximum travel ranges from 0.59 to 2.36 in. [15 to 60mm]
- Damping efficiency up to 60%
Assembly Diagram

Performance Curve

CHART UNITS
US
METRIC
R-Series Specifications
Model | Maximum Energy Capacity (in-lbs) | Maximum Dynamic Force (lbf) | Maximum Stroke (in) | Free Length (in) | Maximum Bulge (in) | Weight (oz) | Fastener |
---|---|---|---|---|---|---|---|
R-155 | 24 | 135 | 0.59 | 0.91 | 1.50 | 0.2 | #10 SFH Cap Screw |
R-255 | 53 | 225 | 0.75 | 1.18 | 1.97 | 0.4 | #10 SFH Cap Screw |
R-355 | 77 | 250 | 0.91 | 1.42 | 2.28 | 0.6 | #10 SFH Cap Screw |
R-455 | 104 | 275 | 1.26 | 1.65 | 2.68 | 0.9 | #10 SFH Cap Screw |
R-555 | 221 | 475 | 1.61 | 2.09 | 3.43 | 1.8 | #10 SFH Cap Screw |
R-655 | 589 | 1,050 | 1.46 | 2.20 | 3.46 | 2.8 | #10 SFH Cap Screw |
R-755 | 721 | 1,300 | 1.65 | 2.52 | 4.02 | 3.6 | 1/4 SFH Cap Screw |
R-855 | 1,097 | 1,675 | 1.81 | 2.72 | 4.29 | 5.2 | 1/4 SFH Cap Screw |
R-955 | 1,398 | 2,150 | 1.81 | 2.72 | 4.37 | 6.7 | 3/8 SFH Cap Screw |
R-1055 | 2,018 | 2,810 | 1.97 | 3.03 | 4.88 | 9.4 | 3/8 SFH Cap Screw |
R-1155 | 2,567 | 3,225 | 2.20 | 3.31 | 5.24 | 11.3 | 3/8 SFH Cap Screw |
R-Series Specifications
Model | Maximum Energy Capacity (Nm) | Maximum Dynamic Force (N) | Maximum Stroke (mm) | Free Length (mm) | Maximum Bulge (mm) | Weight (g) | Fastener |
---|---|---|---|---|---|---|---|
R-155 | 2.7 | 601 | 15 | 23 | 38 | 4 | M5 |
R-255 | 6 | 1,001 | 19 | 30 | 50 | 11 | M5 |
R-355 | 8.7 | 1,112 | 23 | 36 | 58 | 16 | M5 |
R-455 | 11.7 | 1,223 | 32 | 42 | 68 | 24 | M5 |
R-555 | 25 | 2,113 | 41 | 53 | 87 | 51 | M5 |
R-655 | 66.5 | 4,671 | 37 | 56 | 88 | 78 | M6 |
R-755 | 81.5 | 5,783 | 42 | 64 | 102 | 102 | M6 |
R-855 | 124 | 7,451 | 46 | 69 | 109 | 146 | M6 |
R-955 | 158 | 9,564 | 46 | 69 | 111 | 190 | M8 |
R-1055 | 228 | 12,499 | 50 | 77 | 124 | 266 | M8 |
R-1155 | 290 | 14,346 | 56 | 84 | 133 | 319 | M8 |
CHART UNITS
US
METRIC
R-Series Specifications
Model | Maximum Energy Capacity (in-lbs) | Maximum Dynamic Force (lbf) | Maximum Stroke (in) | Free Length (in) | Maximum Diameter (in) | Weight (oz) | Fastener |
---|---|---|---|---|---|---|---|
R-1 | 11 | 50 | 0.67 | 0.98 | 1.50 | 0.2 | #10 SFH Cap Screw |
R-2 | 20 | 75 | 0.83 | 1.26 | 1.97 | 0.4 | #10 SFH Cap Screw |
R-3 | 31 | 100 | 0.98 | 1.46 | 2.28 | 0.5 | #10 SFH Cap Screw |
R-4 | 51 | 150 | 1.34 | 1.73 | 2.68 | 0.8 | #10 SFH Cap Screw |
R-5 | 106 | 200 | 1.69 | 2.17 | 3.43 | 1.8 | #10 SFH Cap Screw |
R-6 | 204 | 375 | 1.57 | 2.32 | 3.46 | 2.6 | #10 SFH Cap Screw |
R-7 | 305 | 475 | 1.81 | 2.64 | 4.02 | 3.5 | 1/4 SFH Cap Screw |
R-8 | 398 | 575 | 1.97 | 2.87 | 4.29 | 4.9 | 1/4 SFH Cap Screw |
R-9 | 602 | 850 | 1.97 | 2.87 | 4.37 | 6.2 | 3/8 SFH Cap Screw |
R-10 | 814 | 1,100 | 2.24 | 3.27 | 4.88 | 9.1 | 3/8 SFH Cap Screw |
R-11 | 1,018 | 1,275 | 2.36 | 3.46 | 5.24 | 10.6 | 3/8 SFH Cap Screw |
R-Series Specifications
Model | Maximum Energy Capacity (Nm) | Maximum Dynamic Force (N) | Maximum Stroke (mm) | Free Length (mm) | Maximum Diameter (mm) | Weight (g) | Fastener |
---|---|---|---|---|---|---|---|
R-1 | 1.2 | 222 | 17 | 25 | 38 | 4 | M5 |
R-2 | 2.3 | 334 | 21 | 32 | 50 | 10 | M5 |
R-3 | 3.5 | 445 | 25 | 37 | 58 | 14 | M5 |
R-4 | 5.8 | 667 | 34 | 44 | 68 | 23 | M5 |
R-5 | 12 | 890 | 43 | 55 | 87 | 50 | M5 |
R-6 | 23 | 1,668 | 40 | 59 | 88 | 74 | M6 |
R-7 | 34.5 | 2,113 | 46 | 67 | 102 | 98 | M6 |
R-8 | 45 | 2,558 | 50 | 73 | 109 | 139 | M6 |
R-9 | 68 | 3,781 | 50 | 73 | 111 | 176 | M8 |
R-10 | 92 | 4,893 | 57 | 83 | 124 | 257 | M8 |
R-11 | 115 | 5,671 | 60 | 88 | 133 | 299 | M8 |

Typical Applications
-
Shipping Container Isolators
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Aircraft Cargo Floor Isolators
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Fitness Equipment Dampers