A major energy transition company was contracted to work on compressors on an oil rig in the Atlantic Ocean. The customer reached out to Caster Concepts due to the unique application and the safety factor needed to move these large compressors, each weighing 38,000 lbs.

The giant compressors and compressor components mount on carts that are winched down a pathway of channel iron on concrete decking to guide them. To ensure safe operation and to follow safety guidelines, the casters must handle weights 3 times that of the expected load weight.  It was also important that the compressor carts could be locked down during periods of transportation by crane.


91 Series Caster

91 Series Caster

The customer purchased Caster Concepts’ 91 series 12 x 4 Heavy Duty polyurethane casters with locks and brakes. While the casters didn’t have to be corrosion-resistant, the 91 series comes standard with a powder coating that is resistant to rust and great for this application where salt water is prevalent.

The 91 Extra Heavy Duty Caster was chosen due to its superior strength and is a popular choice where shock loading is present. Since these carts are often lifted via a crane that connects to the compressors, the casters needed to be able to take the punishment of being lowered to the ground with a heavy load. The 91 Series also features a sealed swivel section to prevent moisture intrusion. Due to debris such as nuts and bolts on the deck, T/R 95 poly tread was chosen because of its high tear resistance and extended wear.


The customer was able to move the casters with ease on their concrete decking, and the casters are performing well and handling the shock from being picked up and moved by crane. The customers also liked the option of swivel locks, which enabled them to maneuver the compressors into place. Adding the brakes was also important, as it kept the compressor from rolling while being worked on. And when you are in the middle of the ocean, a 20-ton compressor rolling around is not an option!