Considerations When Purchasing Rexnord Filament Bearings



Our partners at Rexnord Corporation address common questions our customers have when purchasing bearings, such as Rexnord’s filament bearings. What is a filament bearing? When would you use one? OTP Industrial Solutions and Rexnord team up to help our customers make an informed purchase decision.


What is a filament bearing? 

“Filament” is a general term to designate filament wound, non-metallic composite bearings. The structure of the filament bearing should be reinforced with continuous filaments of fiberglass or another material helically wound around a mandrel.


When should you use a filament bearing?

Among the most common filament bearing applications are agricultural machinery, construction equipment, energy processing equipment, food and beverage processing equipment, forest product processing equipment, hydraulic and pneumatic cylinders, lift systems, material handling machinery, mining equipment, recreational vehicle clutches, sailboats, stern drives, and water management valves and actuators.

When considering filament bearings, keep in mind that straight sleeve configurations work well in oscillatory (pivoting), linear sliding and slow-speed full rotation applications like those found in recreational vehicle clutches, construction equipment and water management butterfly valves. Hex and square bore configurations are used in applications such as agriculture and wood processing equipment. These configurations provide torque transmission or prevent shaft rotation, while allowing linear motion. Linear configurations work well in harsh applications like contaminated or wash-down environments, as well as food packaging machinery and factory automated production lines.


When considering your filament bearings, keep in mind the importance of:

  • Self-lubricating features that reduce maintenance time
  • Corrosion and moisture resistance, meaning they can perform when submerged in fresh or salt water
  • Non-metallic composite material that will not seize to a shaft
  • Non-metallic options that could be up to 77 percent lighter in weight than steel bearings and 30 percent lighter than aluminum bearings
  • Electrical insulation


Contact us today to learn more about Rexnord filament bearings and get the answers to all of your bearings questions.


Speedier, Easier Reset Option Now Available for Torque Limiters

By Rob Hucker, Product Manager; Rexnord
Rexnord Autogard Torque Limiter

Do you ever face minutes to hours of downtime due to torque overload in industries such as energy, metal processing, mining, aggregates, automotive, food processing or pulp and paper?

Reduce Downtime with New Torque Limiter Option

A new torque limiter option is newly available from Rexnord for applications that are susceptible to torque overload. The Autogard® 820 Remote-Reset Torque Limiter is a first-of-its-kind option, allowing users to reset the device from a distance and eliminate traditional, hands-on labor requirements. This innovation can reduce downtime by anywhere from minutes to hours for manufacturers.

Mechanical torque limiters play an important role in limiting damage that can be caused by jams and overloads. However, the downtime caused by a disengaged torque limiter still causes work stoppage until a support person is available to take on what can be a time-consuming, manual reset process. The Autogard® 820 Remote-Reset Torque Limiter changes that. It was developed based on customers’ requests for a speedier, easier reset option for high-torque applications. We’ve solved the problem with a remote-reset feature, meaning personnel can quickly reset the torque limiter can from anywhere onsite or offsite with the touch of a button, flip of a switch, or click of a mouse.

It no longer takes manpower to physically reset a unit. This new offering can translate to more-immediate uptime, a value to any user of torque limiters. No special tools are required. Speeds are supported up to 2,400 rpm.


The Autogard® 820 Series Remote-Reset Torque Limiter can be installed independently or as a retrofit upgrade to existing Autogard 820 Series Torque Limiters.

To learn more about the Autogard® 820 Series, view a video demonstration or contact the OTP experts for all of your Rexnord product needs!