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igus® inc.

PO BOX 14349

East Providence

RI 02914

+1 800 521 2747
+1 401 438 7270

drylin® WJRM-BB-31 & 41 hybrid roller bearing with ball bearings

Self-lubricating smooth operation

The drylin® W hybrid roller guide WSR combines function and design. In lateral installation position, doors, boards, shelves or monitors can be moved. And it is now even easier and with less effort.  The combination of the optimized roller alignment of single/double rollers and integrated ball bearings (BB) reduces the coefficient of friction by half and is therefore ideal for all manual adjustments. The two roller bearing versions WJRM-31-10-BB and WJRM-41-10-BB supplement the modular system of the drylin® W hybrid roller guide.

  • Rollers and sliders made of wear-resistant, self-lubricating iglide® polymers
  • Smooth operation due to ball bearing
  • Upon request bearing spacing through flexible positioning of the individual hybrid roller bearings
  • Linear carriages in 3 lengths (100/150/200mm) by combination with WWYR mounting plates
Contact an igus® expert now
Hybrid roller bearing WJRM-BB-31

Tech up with igus news

Tech up

  • Hybrid roller bearings with ball bearings for smooth lateral adjustments
  • Up to 4 times quieter than metallic bearings due to igus high-performance polymers
  • Flat installation height of 30mm on attractive rail profile WSR-10-120
  • Optimised roller alignment for maximum force absorption
Cost down with igus news

Cost down

  • Cost-effective zinc die-cast housing
  • Roller bearings without lubrication
  • Can be positioned individually or as a complete carriage with mounting plates in 3 lengths made of the drylin® W modular linear system
Evidence from igus news


  • Service life tested in the igus laboratory
  • Up to 70% easier running
Recycling with igus news


  • easy energy-efficient adjustment
  • Clean linear guide without lubrication
  • No risk of contamination for the user

Roller bearings from igus

Therefore we have developed the roller bearings WJRM-BB-31 & 41

The roller bearings WJRM-BB-31 & WJRM-BB-41 are designed to supplement our range of roller bearings.  
They manage to reduce the coefficient of friction by half and we are particularly proud to build such a robust yet lightweight roller bearing.  
We see these roller bearings especially in shop fittings,  trade fair construction, office organisation, furniture construction as well as media and event technology. Beyond that, however, there are of course no limits to its use.
Roller bearings WJRM-BB-31 & 41 Technical drawing

Application examples of our drylin products

Application Assistance

For further questions or product information, please contact:

Matt Mowry

drylin® Product Manager


Customer Service:

Monday to Friday from 8 am - 8 pm



The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsibushi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention in this website. The products offered by igus® are those of igus® GmbH