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igus® inc.

PO BOX 14349

East Providence

RI 02914

+1 800 521 2747
+1 401 438 7270

JEM insert bearings are a quick and easy 1:1 replacement for metal bearings

Directly replace your existing metal insert bearings with igubal® JEM - no redesign necessary. These plastic spherical insert bearings, engineered with high-performance polymers embedded with solid lubricants, last 8 times longer than their metal counterparts. Increased lifetime means less replacements and decreased operation costs. igubal® JEM is also grease-free, dry-running and maintenance-free, so you can prevent unplanned downtime and increase production, especially in dirty environments.


  • Plastic, self-lubricating inserts are grease-free, making them an ideal 1:1 replacement and retrofit option
  • Service life up to 8x longer than metal bearings
  • Low cost, lightweight and quiet-running
  • Injection-molded & other custom options available
  • Maintenance-free, less downtime, no service needed
  • Ideal for heavy-duty applications, safe for food contact
Ideal Industries:

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Insert Bearings

JEM-SP insert bearing

  • Injection-molded, low-cost, grease-free
  • Dirt/debris-resistant ridges, lightweight, quiet
  • Fast/easy retrofit for failing, rusty metal bearings

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Two and Four Bolt Flange

JEM-SP two and four bolt flange

  • Cast iron, sheet metal & polymer housing options
  • Self-lubricating, grease & maintenance-free
  • Lightweight & cost-effective for heavy-duty loads

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Pillow blocks

JEM-SP pillow block

  • Cast iron, sheet metal & polymer housing options
  • Self-lubricating, maintenance-free, low-cost
  • Low-moisture absorption, dirt/dust-resistant

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Request a JEM sample box

JEM sample box
Request a sample box

Engineer's Toolbox Resources


Contact a spherical bearings expert

Whether you're interested in turnkey, fully assembled solutions or looking to build your own customizable project, let us assist you with a solution based on your specific application and requirements. Contact us via the form below or call us at (800) 521-2747 to discuss your project today!

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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