SA (Shock Absorbing) Series Casters

SHOCK ABSORBING CASTERS

RWM Casters proudly manufactures shock-absorbing casters with a heavy-duty, spring-loaded design to provide a cushioned ride when traversing uneven terrain. The primary goal is to reduce the shock and vibration transferred to the items on the cart, truck, or rack being moved around.

Our shock-absorbing swivel casters have load ratings ranging from 100 lbs. to 18,000 lbs. for nearly any light- to heavy-duty industrial application. We also proudly manufacture these products in the U.S. so that you can put your complete confidence in our durable, high-performance casters.

Learn more about the products in our shock-absorbing series to find out if these casters are right for your application. To get more info or place an order, simply contact us online or call 800-634-7704.

Shock-Absorbing, Spring-Loaded Industrial Casters by RWM Casters

APPLICATIONS

You might need casters with shock absorbency characteristics if you plan to transport or provide support for any of the following:

  • Diagnostic and electrical equipment
  • Institutional and laboratory equipment and stands
  • Medical equipment and carts
  • Mobile workstations
  • Computer mainframes and towers
  • Point of purchase displays and shelving
  • Food processing equipment
  • Packaging equipment
  • Sound and lighting equipment
  • Ground support equipment
  • Assembly line dollies
  • Mobile storage racks
  • Many other light- to heavy-duty applications

Benefits of Shock-Absorbing Casters

You enjoy several benefits by choosing casters with shock absorbency, including:

  • Protected cargo: The number one reason to use shock-absorbing casters is to reduce the vibration transferred to the contents of the cart.
  • Reduced noise: Carts can make a lot of noise when traveling over rough surfaces. Spring-loaded casters reduce this by smoothing out the ride.
  • Decreased risk of overload: The shock absorption feature equalizes the load among four or more casters, reducing the chance of overload and the uncontrollable twisting of the cart.
  • Increased ease of use: Dollies and carts with spring-loaded casters are easier to roll over cracked flooring, uneven surfaces, thresholds, and other obstructions.
  • Reduced risk of damage to the floor: Shock absorbency reduces wear and tear on the flooring beneath the casters.

Choosing Shock-Absorbing Casters

Not all shock-absorbing casters are created equal. If the casters you choose are outfitted with the wrong springs, they might do more harm than good. For instance, if the springs are too firm, they could create more noise and cause the contents on a cart to shake and vibrate far more. In fact, if the springs are not sufficiently firm, there could be no shock absorption at all.

Combat these issues by selecting shock-absorbing casters with the right weight capacity for the application.

Another factor to consider is how the springs are mounted. Your options include:

  • Vertical mount
  • Inside mount
  • Outside mount

If the casters always bear the same weight, vertical-mounted springs may be ideal. This design offers no deflection of the springs when the casters carry the weight of the rated load capacity.

Then again, if the load often changes, inside-mounted springs are a suitable choice. They allow for significant variation in cargo weight while keeping vibration and noise to a minimum.

Choose RWM Casters for Shock-Absorbing Casters

We invite you to check out our selection of shock-absorbing, spring-loaded casters. If you don’t see the item you need, RWM Casters’ engineering team can design custom casters for you.

Choose from various spring mounts, brakes, swivel locks, yokes, raceways, and finishes to customize the perfect casters for your application and needs. We always strive to deliver superior value by manufacturing products that perform flawlessly in the settings for which they were designed.

To learn more about our shock-absorbing casters or to place an order, please contact RWM Casters online or call 800-634-7704 today.

Shock-Absorbing Industrial Casters

2-125-FNT-2575-S-SA-OMS-LLST-FF


Bearing Selection Guide

sa-caster-1


OPTIONS
BRAKES
CWB Cam Wheel Brake
PCWB Poly Cam Wheel Brake
SWIVEL LOCKS
DSL Demountable Swivel Lock
HDSL Heavy Duty Demountable Swivel Lock
LSL L-Type Swivel Lock
SL Swivel Lock
YOKES
NY Notched Yoke
RACEWAYS
SR Sealed Raceways
FINISHES
HTP High Temperature Paint
ZP Zinc Plated

 


Wheel Diameter

Wheel Width

Wheel Type
Swivel Series
Overall Height @ 1/2 Deflections

Swivel Lead

Swivel Radius
Deflection Range* Caster Load Rating Availability (Min-Max)**
Approx Weight
Swivel Caster Model Number**
VMS SA CASTER
6″ 2″ Phenolic 44 8-1/8″ 1-3/4″ 4-3/4″ 7/8″ 200-800 9.0 44-DUR-0620-S-VMS
6″ 2″ Rubber/Iron 44 8-1/8″ 1-3/4″ 4-3/4″ 1″ 200-400 11.0 44-RIR-0620-S-VMS
6″ 2″ Urethane 44 8-1/8″ 1-3/4″ 4-3/4″ 1″ 200-800 11.1 44-UIR-0620-S-VMS
8″ 2″ Phenolic 44 10″ 2-1/8″ 6-1/8″ 15/16″ 200-1000 10.0 44-DUR-0820-S-VMS
8″ 2″ Rubber/Iron 44 10″ 2-1/8″ 6-1/8″ 1″ 200-500 12.0 44-RIR-0820-S-VMS
8″ 2″ Urethane 44 10″ 2-1/8″ 6-1/8″ 1″ 200-1000 12.0 44-UIR-0820-S-VMS
8″ 2″ Phenolic 65 11″ 2-1/8″ 6-1/8″ 1-1/4″ 500-1000-1400 12.0 65-DUR-0820-S-VMS
8″ 2″ Rubber/Iron 65 11″ 2-1/4″ 6-1/2″ 1-1/4″ 500 13.0 65-RIR-0820-S-VMS
8″ 2″ Urethane 65 11″ 2-1/4″ 6-1/2″ 1-1/4″ 500-1000-1500 13.0 65-UIR-0820-S-VMS
8″ 2-1/2″ Phenolic 75 11″ 2-1/4″ 6-1/2″ 1-1/4″ 500-1000-1500 13.5 75-DUR-0825-S-VMS
8″ 2-1/2″ Rubber/Iron 75 11″ 2-1/4″ 6-1/2″ 1-1/4″ 500-670 15.0 75-RIR-0825-S-VMS
8″ 2-1/2″ Urethane 75 11″ 2-1/4″ 6-1/2″ 1-1/4″ 500-1000-1500 15.0 75-UIR-0825-S-VMS
8″ 2-1/2 “ Phenolic 2-75 11″ 2″ 7-1/8″ 1-1/4″ 1000-2000-3000 27.0 2-75-DUR-0825-S-VMS
8″ 2-1/2 “ Rubber/Iron 2-75 11″ 2-1/4″ 7-1/8″ 1-1/4″ 1000-1340 30.0 2-75-RIR-0825-S-VMS
8″ 2-1/2 “ Urethane 2-75 11″ 2-1/4″ 7-1/8″ 1-1/4″ 1000-2000-3000 30.0 2-75-UIR-0825-S-VMS
10″ 2-1/2 “ Phenolic 75 13″ 2-3/4″ 8″ 1-1/4″ 500-1000-1050 15.0 75-DUR-1025-S-VMS
10″ 2-1/2 “ Rubber/Iron 75 13″ 2-3/4″ 8″ 1-1/4″ 500-790 20.0 75-RIR-1025-S-VMS
10″ 2-1/2 “ Urethane 75 13″ 2-3/4″ 8″ 1-1/4″ 500-1000-1500 20.0 75-UIR-1025-S-VMS
10″ 2-1/2 “ Phenolic 2-75 13″ 2-3/4″ 8″ 1-1/4″ 1000-2000-3000 30.0 2-75-DUR-1025-S-VMS
10″ 2-1/2 “ Rubber/Iron 2-75 13″ 2-3/4″ 8″ 1-1/4″ 1000-1500 40.0 2-75-RIR-1025-S-VMS
10″ 2-1/2 “ Urethane 2-75 13″ 2-3/4″ 8″ 1-1/4″ 1000-2000-3000 40.0 2-75-UIR-1025-S-VMS
10″ 3″ Phenolic 2-75 13″ 2-3/4″ 8-5/8″ 1-1/4″ 1000-2000-3000 38.0 2-75-DUR-1030-S-VMS
10″ 3″ Rubber/Iron 2-75 13″ 2-3/4″ 8-5/8″ 1-1/4″ 1000-2000 48.0 2-75-RIR-1030-S-VMS
10″ 3″ Urethane 2-75 13″ 2-3/4″ 8-5/8″ 1-1/4″ 1000-2000-3000 48.0 2-75-UIR-1030-S-VMS
OMS SA CASTER
12″ 4″ Urethane 2-125 21″ 5-1/2″ 12-3/4″ 2-1/2″ 4800-9600 290.0 2-125-UIT-1240-S-OMS
12″ 4″ Urethane Thick  2-125  21″  5-1/2″  12-3/4″  1-1/2″ 4800-9600 290.0 2-125-UTT-1240-S-OMS
12″ 5″ Urethane 125 21″ 5-1/2″ 12″ 2-1/2″ 3250-6000 100.0 125-UIT-1250-S-OMS
16″ 5″ Urethane 125 23″ 5-1/2″ 14″ 2-1/2″ 3250-6500 180.0 125-UIT-1650-S-OMS
16″ 5″ Urethane Thick  125  23″ 5-1/2″  14″  2-1/2″ 3250-6500 180.0 125-UTT-1650-S-OMS
16″ 5″ Urethane 2-125 23″ 5-1/2″ 15″ 2-1/2″ 6500-13000 400.0 2-125-UIT-1650-S-OMS
16″ 5″ Urethane Thick  2-125  23″  5-1/2″  15″  2-1/2″ 6500-13000 400.0 2-125-UTT-1650-S-OMS
18″ 5″ Urethane 2-125 25″ 5-1/2″ 16″ 2-1/4″ 8000-16000 570.0 2-125-UIT-1850-S-OMS
20″ 5″ Urethane Iron 2-125 25-5/8″ 5-7/8″ 18-5/8″ 1-1/2″ 10000-18000 925.0 2-125-UIT-2050-S-OMS
IMS SA CASTER
4″ 2″ Phenolic 65 7-1/4″ 2″ 4-1/8″ 1-1/16″ 100-200-250 10.0 65-DUR-0420-S-IMS
4″ 2″ Rubber/Iron 65 7-1/4″ 2″ 4-1/8″ 1-1/16″ 100-200-250 10.0 65-RIR-0420-S-IMS
4″ 2″ Urethane 65 7-1/4″ 2″ 4-1/8″ 1-1/16″ 100-200-250 10.0 65-UIR-0420-S-IMS
4″ 2-1/2″ Urethane 65 7-1/4″ 2″ 4-1/4″ 1-1/16″ 100-200-250 10.0 65-UIB-0425-S-IMS
8″ 2-1/2″ Phenolic 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 500-1000-1500-2000 13.5 75-DUR-0825-S-IMS
8″ 2-1/2″ Rubber/Iron 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 670 15.0 75-RIR-0825-S-IMS
8″ 2-1/2″ Urethane 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 1000-1500-2000 20.0 75-UIR-0825-S-IMS
8″ 3″ Phenolic 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 1000-1500-2000 15.0 75-DUR-0830-S-IMS
8″ 3″ Rubber/Iron 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 840 17.0 75-RIR-0830-S-IMS
8″ 3″ Urethane 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 1000-1500-2000 27.0 75-UIT-0830-S-IMS
8″ 3″ Urethane Thick 75 11″ 4-1/2″ 8-3/4″ 1-1/2″ 1000-1500-2000 17.0 75-UTR-0830-S-IMS
8″ 3″ Phenolic 2-85 11-1/2″ 4-1/2″ 9-3/8″ 1-1/2″ 2000-3000 35.0 2-85-DUR-0830-S-IMS
8″ 3″ Rubber/Iron 2-85 11-1/2″ 4-1/2″ 9-3/8″ 1-1/2″ 1680 45.0 2-85-RIR-0830-S-IMS
8″ 3″ Urethane 2-85 11-1/2″ 4-1/2″ 9-3/8″ 1-1/2″ 2000-3000 45.0 2-85-UIT-0830-S-IMS
8″ 3″ Urethane Thick 2-85 11-1/2″ 4-1/2″ 9-3/8″ 1-1/2″ 2000-3000 45.0 2-85-UTT-0830-S-IMS
10″ 2-1/2″ Phenolic 75 13″ 4-1/2″ 9-3/4″ 1-1/2″ 1100-1650-2200 15.0 75-DUR-1025-S-ISM
10″ 2-1/2″ Rubber/Iron 75 13″ 4-1/2″ 9-3/4″ 1-1/2″ 790 20.0 75-RIR-1025-S-IMS
10″ 2-1/2″ Urethane 75 13″ 4-1/2″ 9-3/4″ 1-1/2″ 1100-1650-2200 49.0 75-UIR-1025-S-IMS
10″ 3″ Phenolic 75 13″ 4-1/2″ 9-3/4″ 1″ 1100-1650-2200 18.0 75-DUR-1030-S-IMS
10″ 3″ Rubber/Iron 75 13″ 4-1/2″ 9-3/4″ 1″ 1000 40.0 75-RIR-1030-S-IMS
10″ 3″ Urethane 75 13″ 4-1/2″ 9-3/4″ 1″ 1100-1650-2200 23.0 75-UIT-1030-S-IMS
10″ 3″ Urethane Thick 75 13″ 4-1/2″ 9-3/4″ 1″ 1100-1650-2200 23.0 75-UTT-1030-S-IMS
10″ 3″ Phenolic 2-85 13-1/2″ 4-1/2″ 10-1/4″ 1-1/2″ 2200-3300-4400 42.0 2-85-DUR-1030-S-IMS
10″ 3″ Rubber/Iron 2-85 13-1/2″ 4-1/2″ 10-1/4″ 1-1/2″ 2000 52.0 2-85-RIR-1030-S-IMS
10″ 3″ Urethane 2-85 13-1/2″ 4-1/2″ 10-1/4″ 1-1/2″ 2200-3300-4400 52.0 2-85-UIT-1030-S-IMS
10″ 3″ Urethane Thick 2-85 13-1/2″ 4-1/2″ 10-1/4″ 1-1/2″ 2200-3300-4400 52.0 2-85-UTT-1030-S-IMS
10″ 5″ Urethane 125 15-1/2″ 4-1/2″ 10″ 1-3/4″ 2200-3300 80.0 125-UIT-1050-S-IMS
12″ 3″ Phenolic 75 16″ 5-1/2″ 11-3/4″ 1-3/4″ 1100-2200-3300 26.0 75-DUR-1230-S-IMS
12″ 3″ Rubber/Iron 75 16″ 5-1/2″ 11-3/4″ 1-3/4″ 1100 31.0 75-RIR-1230-S-IMS
12″ 3″ Urethane 75 16″ 5-1/2″ 11-3/4″ 1-3/4″ 1100-2200-3300 47.0 75-UIT-1230-S-IMS
12″ 3″ Urethane Thick 75 16″ 5-1/2″ 11-3/4″ 1-3/4″ 1100-2200-3300 53.0 75-UTT-1230-S-IMS
12″ 3″ Phenolic 2-85 16-1/2″ 5-1/2″ 12-1/4″ 1 2200-4400-6600 60.0 2-85-DUR-1230-S-IMS
12″ 3″ Rubber/Iron 2-85 16-1/2″ 5-1/2″ 12-1/4″ 1 2200 65.0 2-85-RIR-1230-S-IMS
12″ 3″ Urethane 2-85 16-1/2″ 5-1/2″ 12-1/4″ 1 2200-4400-6600 102.0 2-85-UIT-1230-S-IMS
12″ 3″ Urethane Thick 2-85 16-1/2″ 5-1/2″ 12-1/4″ 1 2200-4400-6600 116.0 2-85-UTT-1230-S-IMS
12″ 5″ Urethane 125 16-1/2″ 5-1/2″ 12″ 2″ 2200-3300 290.0 125-UIT-1250-S-IMS

* This represents half deflection at the specified overall height and caster load rating.
** When placing an order, add the operating load to the end of the model number (example: 65-DUR-0820-S-VMS-1000).
‡ This is often called the working height. Add 1/2 of total deflection range to obtain the height at no load (example: 75-DUR-0825-S-VMS-500).
11” overall height plus 5/8” equals 11-5/8” height at no load. All dimensions are nominal. Contact your RWM representative for exact information.