About Selecting Shock Absorbers
To select the best shock absorber for your application, you need to find the energy capacity your application requires. Use this formula to calculate the energy capacity required to stop a horizontal-moving load. For example, if you have a 250-lb. load moving at 25 inches per second, your calculation is (250 lbs. ÷ 772) × 252 = 202.4 in.-lbs. energy capacity.
Note: Choose a shock absorber with a higher energy capacity than you calculated. Factors such as driving force or an inclined surface will increase the energy capacity required.
Energy Capacity (in.-lbs.) = (Weight, lbs./772) × Velocity2 (in. per second)
Self-Adjusting Shock Absorbers
Accommodate changing loads and energy without manual adjustment. Shock absorbers counteract the energy of moving objects to prevent damage to equipment and material. They're often used in gantry systems, presses, and at stops along conveyors. Mounting nuts are included. Mounting Blocks for Shock Absorbers are sold separately.
Nylon and urethane rubber bumpers are nonmarring.
Aluminum bumpers are nonmagnetic.
For technical drawings and 3-D models, click on a part number.
Body | Bumper | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Dia. | Thread Size  | Thread Pitch, mm | Body Material | Rod Dia. | Dia. | Material | Each | |
Threaded-Body Mount | |||||||||||||
Inch | |||||||||||||
| 20 | 167 | 0.26" | 2.27" | 2.01" | 0.375" | 3/8"-32 | __ | Black-Oxide Steel | 0.13" | 0.3" | Steel | 0000000 | 000000 |
| 75 | 56 | 0.4" | 2.76" | 2.36" | 0.5" | 1/2"-20 | __ | Black-Oxide Steel | 0.13" | 0.3" | Steel | 0000000 | 00000 |
| 123 | 41 | 0.5" | 3.66" | 3.16" | 0.563" | 9/16"-18 | __ | Black-Oxide Steel | 0.19" | 0.47" | Nylon | 0000000 | 000000 |
| 225 | 22 | 0.63" | 4.5" | 3.87" | 0.563" | 9/16"-18 | __ | Black-Oxide Steel | 0.16" | 0.47" | Steel | 0000000 | 00000 |
| 288 | 23 | 0.5" | 4.07" | 3.57" | 0.75" | 3/4"-16 | __ | Black-Oxide Steel | 0.25" | 0.66" | Nylon | 0000000 | 000000 |
| 300 | 22 | 0.75" | 4.62" | 3.87" | 0.75" | 3/4"-16 | __ | Black-Oxide Steel | 0.19" | 0.66" | Steel | 0000000 | 00000 |
| 360 | 19 | 0.5" | 3.81" | 3.31" | 0.75" | 3/4"-16 | __ | Black-Oxide Steel | 0.25" | __ | __ | 00000000 | 000000 |
| 600 | 17 | 1" | 5.76" | 4.76" | 1" | 1"-12 | __ | Black-Oxide Steel | 0.31" | 0.9" | Nylon | 0000000 | 000000 |
| 620 | 11 | 0.59" | 4.15" | 3.56" | 0.75" | 3/4"-16 | __ | Black-Oxide Steel | 0.25" | 0.66" | Steel | 000000 | 000000 |
| 650 | 10 | 0.59" | 4.15" | 3.56" | 0.75" | 3/4"-16 | __ | Black-Oxide Steel | 0.25" | 0.66" | Steel | 00000000 | 000000 |
| 650 | 15 | 1" | 5.62" | 4.62" | 1" | 1"-12 | __ | Black-Oxide Steel | 0.25" | 0.9" | Steel | 0000000 | 000000 |
| 975 | 14 | 1.58" | 7.44" | 5.86" | 1" | 1"-12 | __ | Black-Oxide Steel | 0.25" | 0.9" | Steel | 000000 | 000000 |
| 1,860 | 5 | 0.91" | 5.51" | 4.6" | 1" | 1"-12 | __ | Black-Oxide Steel | 0.38" | 0.9" | Steel | 000000 | 000000 |
| 5,000 | 10 | 2" | 8.25" | 6.25" | 1.375" | 1 3/8"-12 | __ | Black-Oxide Steel | 0.34" | 0.63" | Aluminum | 0000000 | 000000 |
Metric | |||||||||||||
| 9 | 33 | 0.2" | 1.22" | 1.02" | 0.24" | M6 | 0.5 | Black-Oxide Steel | 0.08" | __ | __ | 0000000 | 00000 |
| 11 | 53 | 0.2" | 1.52" | 1.32" | 0.31" | M8 | 0.75 | Black-Oxide Steel | 0.08" | 0.19" | Acetal | 0000000 | 00000 |
| 11 | 53 | 0.2" | 1.52" | 1.32" | 0.31" | M8 | 1 | Black-Oxide Steel | 0.08" | 0.19" | Acetal | 0000000 | 00000 |
| 17 | 70 | 0.24" | 1.97" | 1.73" | 0.31" | M8 | 1 | Black-Oxide Steel | 0.08" | 0.26" | Urethane Rubber | 00000000 | 00000 |
| 20 | 167 | 0.26" | 2.27" | 2.01" | 0.39" | M10 | 1 | Black-Oxide Steel | 0.13" | 0.3" | Steel | 0000000 | 00000 |
| 35 | 63 | 0.31" | 2.24" | 1.93" | 0.39" | M10 | 1 | Black-Oxide Steel | 0.1" | 0.34" | Urethane Rubber | 00000000 | 00000 |
| 44 | 59 | 0.39" | 2.74" | 2.35" | 0.48" | M12 | 1 | Black-Oxide Steel | 0.12" | 0.41" | Urethane Rubber | 00000000 | 00000 |
| 75 | 56 | 0.4" | 2.76" | 2.36" | 0.48" | M12 | 1 | Black-Oxide Steel | 0.13" | 0.3" | Steel | 0000000 | 00000 |
| 100 | 10 | 0.25" | 2.75" | 2.5" | 0.55" | M14 | 1.5 | Black-Oxide Steel | 0.15" | 0.25" | Aluminum | 0000000 | 000000 |
| 123 | 41 | 0.5" | 3.66" | 3.16" | 0.55" | M14 | 1 | Black-Oxide Steel | 0.19" | 0.47" | Nylon | 0000000 | 000000 |
| 142 | 31 | 0.39" | 3.62" | 3.22" | 0.48" | M12 | 1 | Black-Oxide Steel | 0.15" | __ | __ | 00000000 | 000000 |
| 175 | 29 | 0.5" | 3.41" | 2.91" | 0.55" | M14 | 1.5 | Black-Oxide Steel | 0.19" | __ | __ | 00000000 | 000000 |
| 175 | 34 | 0.5" | 3.41" | 2.91" | 0.55" | M14 | 1.5 | Black-Oxide Steel | 0.19" | __ | __ | 00000000 | 000000 |
| 200 | 10 | 0.5" | 3.75" | 3.25" | 0.78" | M20 | 1.5 | Black-Oxide Steel | 0.15" | 0.25" | Aluminum | 0000000 | 000000 |
| 225 | 22 | 0.63" | 4.5" | 3.87" | 0.55" | M14 | 1.5 | Black-Oxide Steel | 0.16" | 0.47" | Steel | 0000000 | 00000 |
| 250 | 26 | 1" | 4.75" | 3.75" | 0.98" | M25 | 1.5 | Black-Oxide Steel | 0.19" | 0.38" | Aluminum | 0000000 | 000000 |
| 274 | 27 | 0.47" | 3.7" | 3.22" | 0.55" | M14 | 1.5 | Black-Oxide Steel | 0.19" | __ | __ | 00000000 | 000000 |
| 288 | 23 | 0.5" | 4.07" | 3.57" | 0.78" | M20 | 1.5 | Black-Oxide Steel | 0.25" | 0.66" | Nylon | 0000000 | 000000 |
| 300 | 22 | 0.75" | 4.62" | 3.87" | 0.78" | M20 | 1.5 | Black-Oxide Steel | 0.19" | 0.66" | Steel | 0000000 | 00000 |
| 360 | 19 | 0.5" | 3.81" | 3.31" | 0.78" | M20 | 1.5 | Black-Oxide Steel | 0.25" | __ | __ | 00000000 | 000000 |
| 600 | 17 | 1" | 5.76" | 4.76" | 0.98" | M25 | 1.5 | Black-Oxide Steel | 0.31" | 0.9" | Nylon | 0000000 | 000000 |
| 650 | 10 | 1" | 4.75" | 3.75" | 0.98" | M25 | 1.5 | Black-Oxide Steel | 0.19" | 0.38" | Aluminum | 0000000 | 000000 |
| 650 | 15 | 1" | 5.62" | 4.62" | 0.98" | M25 | 1.5 | Black-Oxide Steel | 0.25" | 0.9" | Steel | 0000000 | 000000 |
| 690 | 15 | 1" | 5.93" | 4.93" | 1.06" | M27 | 3 | Black-Oxide Steel | 0.31" | 0.89" | Urethane Rubber | 00000000 | 000000 |
| 1,860 | 5 | 0.91" | 5.51" | 4.6" | 0.98" | M25 | 1.5 | Black-Oxide Steel | 0.38" | 0.9" | Steel | 00000000 | 000000 |
| 2,000 | 10 | 1" | 5.25" | 4.25" | 1.3" | M33 | 1.5 | Black-Oxide Steel | 0.28" | 0.5" | Aluminum | 0000000 | 000000 |
| 5,000 | 10 | 2" | 8.25" | 6.25" | 1.42" | M36 | 1.5 | Black-Oxide Steel | 0.34" | 0.63" | Aluminum | 0000000 | 000000 |
Corrosion-Resistant Self-Adjusting Shock Absorbers
Made from stainless steel for excellent corrosion resistance in damp environments. Install shock absorbers in gantry systems, presses, and at stops along conveyors—they counteract the energy of moving objects to prevent damage to equipment and material. Use Mounting Blocks for Shock Absorbers (not included) and Mounting Nuts for Shock Absorbers (not included) for mounting.
For technical drawings and 3-D models, click on a part number.
Body | Rod | Bumper | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Dia. | Thread Size | Material | Dia. | Material | Dia. | Material | Each | |
Threaded-Body Mount | |||||||||||||
| 100 | 10 | 0.25" | 2.75" | 2.5" | 0.56" | 9/16"-18 | Stainless Steel | 0.15" | Stainless Steel | 0.25" | Stainless Steel | 000000 | 0000000 |
| 200 | 10 | 0.5" | 3.75" | 3.25" | 0.75" | 3/4"-16 | Stainless Steel | 0.15" | Stainless Steel | 0.25" | Stainless Steel | 000000 | 000000 |
| 250 | 27 | 1" | 4.75" | 3.75" | 1" | 1"-12 | Stainless Steel | 0.19" | Stainless Steel | 0.38" | Stainless Steel | 000000 | 000000 |
| 650 | 10 | 1" | 4.75" | 3.75" | 1" | 1"-12 | Stainless Steel | 0.19" | Stainless Steel | 0.38" | Stainless Steel | 000000 | 000000 |
| 2,000 | 10 | 1" | 5.25" | 4.25" | 1.25" | 1 1/4"-12 | Stainless Steel | 0.28" | Stainless Steel | 0.5" | Stainless Steel | 000000 | 000000 |
| 5,000 | 10 | 2" | 8.25" | 6.25" | 1.38" | 1 3/8"-12 | Stainless Steel | 0.34" | Stainless Steel | 0.63" | Stainless Steel | 000000 | 000000 |
Adjustable Shock Absorbers
Turn the knob on these shock absorbers to change deceleration to suit varying loads and speeds. They counteract the energy of moving objects to prevent damage to equipment and material. They're commonly used in gantry systems, presses, and conveyor stops.
Threaded-body mount shock absorbers use Mounting Blocks for Shock Absorbers (not included) for mounting. They include mounting nuts.
Flange-mount shock absorbers can be attached anywhere along the body. Secure them in place with the included locknut.
Nylon and urethane rubber bumpers are nonmarring.
For technical drawings and 3-D models, click on a part number.
Body | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Dia. | Thread Size | Body Material | Rod Diameter | Rod Finish | Bumper Dia. | Bumper Material | Temp. Range, ° F | Each | |
Variable Adjustment | ||||||||||||||
| 35 | 25 | 0.4" | 3.31" | 2.91" | 0.5" | 1/2"-20 | Black-Oxide Steel | 0.13" | Stainless Steel | 0.3" | Steel | 32° to 150° | 0000000 | 000000 |
| 200 | 25 | 0.5" | 3.67" | 3.17" | 0.563" | 9/16"-18 | Black-Oxide Steel | 0.19" | Stainless Steel | 0.47" | Nylon | 32° to 150° | 0000000 | 000000 |
| 275 | 18 | 0.5" | 4.35" | 3.85" | 0.75" | 3/4"-16 | Black-Anodized Aluminum | 0.19" | Nickel-Plated Steel | 0.5" | Urethane Rubber | 32° to 150° | 0000000 | 000000 |
| 300 | 22 | 0.75" | 4.67" | 3.92" | 0.75" | 3/4"-16 | Black-Oxide Steel | 0.19" | Stainless Steel | 0.66" | Steel | 32° to 150° | 0000000 | 000000 |
| 600 | 17 | 1" | 5.6" | 4.6" | 1" | 1"-12 | Black-Oxide Steel | 0.25" | Stainless Steel | 0.9" | Steel | 32° to 150° | 0000000 | 000000 |
| 715 | 15 | 1" | 5.62" | 4.62" | 1" | 1"-12 | Black-Anodized Aluminum | 0.25" | Chrome-Plated Steel | 0.62" | Urethane Rubber | 32° to 150° | 0000000 | 000000 |
| 1,500 | 7 | 0.91" | 5.44" | 4.53" | 1.25" | 1 1/4"-12 | Black-Oxide Steel | 0.375" | Chrome-Plated Steel | 1" | Steel | 32° to 150° | 0000000 | 000000 |
| 3,450 | 5 | 0.91" | 5.69" | 4.78" | 1.75" | 1 3/4"-12 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
| 6,900 | 2 | 1.91" | 7.69" | 5.78" | 1.75" | 1 3/4"-12 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
| 10,350 | 2 | 2.91" | 9.69" | 6.78" | 1.75" | 1 3/4"-12 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
Body | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Dia. | Thread Size | Body Material | Rod Dia. | Rod Material | Bumper Dia. | Bumper Material | Temp. Range, ° F | Each | |
Variable Adjustment | ||||||||||||||
| 35 | 25 | 0.4" | 3.31" | 2.91" | 0.42" | M12 | Black-Oxide Steel | 0.13" | Stainless Steel | 0.3" | Steel | 32° to 150° | 0000000 | 000000 |
| 200 | 25 | 0.5" | 3.67" | 3.17" | 0.46" | M14 | Black-Oxide Steel | 0.19" | Stainless Steel | 0.47" | Nylon | 32° to 150° | 0000000 | 000000 |
| 275 | 18 | 0.5" | 4.35" | 3.85" | 0.75" | M20 | Black-Anodized Aluminum | 0.19" | Nickel-Plated Steel | 0.5" | Urethane Rubber | 32° to 150° | 0000000 | 000000 |
| 300 | 22 | 0.75" | 4.67" | 3.92" | 0.75" | M20 | Black-Oxide Steel | 0.19" | Stainless Steel | 0.66" | Steel | 32° to 150° | 0000000 | 000000 |
| 600 | 17 | 1" | 5.62" | 4.62" | 1" | M25 | Black-Oxide Steel | 0.25" | Stainless Steel | 0.9" | Steel | 32° to 150° | 0000000 | 000000 |
| 715 | 15 | 1" | 5.62" | 4.62" | 1" | M27 | Black-Anodized Aluminum | 0.25" | Chrome-Plated Steel | 0.62" | Urethane Rubber | 32° to 150° | 0000000 | 000000 |
| 1,500 | 7 | 0.91" | 5.44" | 4.53" | 1.15" | M33 | Black-Oxide Steel | 0.375" | Chrome-Plated Steel | 1" | Steel | 32° to 150° | 0000000 | 000000 |
| 3,450 | 5 | 0.91" | 5.69" | 4.78" | 1.65" | M45 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
| 6,900 | 2 | 1.91" | 7.69" | 5.78" | 1.65" | M45 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
| 11,506 | 2 | 2.91" | 9.69" | 6.78" | 1.75" | M45 | Black-Oxide Steel | 0.5" | Chrome-Plated Steel | 1.38" | Steel | 32° to 150° | 0000000 | 000000 |
Flange | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Body Dia. | Body Material | Rod Dia. | Rod Material | Bumper Dia. | Bumper Material | Temp. Range, ° F | Wd. | Ht. | Mtg. Hole Ctr.-to-Ctr. | Thick. | Each | |
Variable Adjustment | |||||||||||||||||
| 3,800 | 3 | 1.91" | 7.44" | 5.53" | 1.25" | Steel | 1.25" | Chrome-Plated Steel | 1" | Urethane Rubber | 10° to 150° | 2" | 1 1/2" | 1.62" | 3/8" | 0000000 | 0000000 |
Light Duty Adjustable Shock Absorbers
Also known as snubbers, use these shock absorbers in low-load, high-cycle applications. They counteract the energy of moving objects to prevent damage to equipment and material. Turn the knob to change deceleration to suit varying loads and speeds. Through-wall shock absorbers have a stud and nut under the removable knob for mounting through a panel or bracket.
For technical drawings and 3-D models, click on a part number.
Rod | Mount. Stud | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Body Dia. | Body Material | Dia. | Material | Thread Size | Lg. | Each | |
Variable Adjustment | ||||||||||||
| 4 | 600 | 1.1" | 4.32" | 2.99" | 1.01" | Rubber-Coated Borosilicate Glass | 0.375" | Urethane | 3/8"-32 | 1/8" | 0000000 | 000000 |
| 9 | 330 | 1.3" | 4.15" | 2.62" | 1.35" | Rubber-Coated Borosilicate Glass | 0.375" | Urethane | 3/8"-32 | 1/8" | 0000000 | 00000 |
Rod | Flange | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Body Dia. | Body Material | Dia. | Material | Tip Material | Location | Wd. | Ht. | Mount. Hole Ctr.-to-Ctr. | Mount. Hole Dia. | Thick. | Each | |
Variable Adjustment | |||||||||||||||||
| 36 | 200 | 2.3" | 6.7" | 3.9" | 1.74" | Rubber-Coated Borosilicate Glass | 0.312" | Acetal | Urethane | Rear | 1 3/4" | 1 3/4" | 1.38" | 0.171" | 1/8" | 0000000 | 0000000 |
| 84 | 70 | 2.3" | 6.7" | 3.9" | 2.21" | Rubber-Coated Borosilicate Glass | 0.312" | Acetal | Urethane | Rear | 2 1/8" | 2 1/8" | 1 3/4" | 0.171" | 1/8" | 0000000 | 000000 |
Leak-Resistant Adjustable Shock Absorbers
An airtight seal prevents leaks and protects moving parts from dust to minimize wear for a long service life. These shock absorbers decelerate fast-moving equipment without bang or bounce to prevent damage to equipment and material. Turn the knob to change deceleration to suit varying loads and speeds.
For technical drawings and 3-D models, click on a part number.
Body | Rod | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Cap., in.-lbs. | Max. Cycles per Minute | Stroke Lg. | Extended Lg. | Compressed Lg. | Dia. | Material | Dia. | Rod Material | Temp. Range, ° F | Mount Type | Each | |
Variable Adjustment | ||||||||||||
| 400 | 23 | 0.5" | 6.33" | 5.83" | 0.94" | Steel | 0.312" | Stainless Steel | 40° to 130° | Mounting Block | 0000000 | 0000000 |
| 800 | 12 | 1" | 7.83" | 6.83" | 0.94" | Steel | 0.312" | Stainless Steel | 40° to 130° | Mounting Block | 0000000 | 000000 |
| 1,600 | 7 | 2" | 10.87" | 8.87" | 0.94" | Steel | 0.312" | Stainless Steel | 40° to 130° | Mounting Block | 0000000 | 000000 |
| Wd. | Ht. | Dp. | Material | Mount. Hole Dia. | Ctr.-to-Ctr. Mount. Hole Ht. | Each | |
| 1 1/4" | 2 1/4" | 1 1/4" | Aluminum | 0.39" | 1.44" | 0000000 | 000000 |