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Grease ball bearings? Not necessary with xiros® polymer ball bearings

Cross section plastic ball bearing

What makes igus ball bearings so special?

Due to the polymers used, all xiros ball bearings are permanently maintenance-free and do not require any additional lubrication.  

  1. Inner ring and outer ring: the suitability of a xiros polymer ball bearing is determined by the materials of the two rings. Our low-friction ball bearings are made of high-performance polymers with different material properties, which means that they can be used in many applications and service life can be maximised.  
  2. Ball bearing cage: the cages of  xiros polymer ball bearings have been designed to perfectly match the materials of the inner and outer rings with regard to  resistance to chemicals and temperature fluctuations/extremes.
  3. Ball bearing balls: in addition to steel balls, igus offers polymer ball bearings with balls made of glass or polymers. Glass balls should be chosen if chemical resistance and a metal-free solution are required. Polymer balls make the ball bearings particularly light. Steel balls (stainless steel) are highly cost-effective and temperature-resistant.

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Plastic ball bearings require no lubrication


Plastic ball bearings are cost-effective

Direct from the manufacturer

Plastic ball bearings manufacturer

Maintenance-free polymer ball bearings are innovative and versatile

The product range of the xiros polymer ball bearings is characterised by a great variety of designs, materials and sizes according to DIN 625. Small ball bearings are used in model making and medical technology, amongst others. xiros polymer ball bearings are successfully used in many applications - ball bearings with special shapes designed according to customer requirements are also part of the product range.  
Predictable service life Due to extensive testing in the xiros test laboratory, the service life of igus ball bearings can be precisely predicted even if used in difficult conditions - also in the case of individual applications.  

Configure ball bearings online and calculate service life
Configure xiros ball bearings online

Lightweight ball bearings made of plastic

Plastic ball bearings are particularly cost-effective

Metal ball bearings are robust - and heavy. xiros ball bearings offer the perfect alternative for many applications as plastic ball bearings are lightweight, reliable and durable.
Plastic ball bearings are often used in the automotive industry and aerospace engineering. Wherever lightweight is important, our light plastic ball bearings are perfect.

Plastic ball bearings are rust-free

Rust-proof ball bearings

Plastic ball bearings have an important advantage compared to those made of metal: they do not rust. Even in corrosive environments, xiros ball bearings run smoothly and have a long service life - and that is completely without maintenance.

Plastic ball bearings are resistant to cold and hot temperatures

Temperature-resistant ball bearings

Thanks to the polymers developed by igus for extreme conditions, igus offers ball bearings that are resistant to both cold and hot temperatures. Due to these properties, expensive special lubricants for metal bearings are not necessary.
The performance of these polymer ball bearings was tested and confirmed as part of numerous tests in the xiros test laboratory, also under extreme cold up to -100°C.
For applications operating in great heat, igus offers high-temperature ball bearings with thermal resistance up to +150°C when used long-term.

Ball bearings made of FDA-compliant plastics

Ball bearings made of FDA-compliant plastics

Ball bearings made of FDA-compliant plastics are used whenever parts come into contact with food, or in sterile areas.
Thanks to the plastics with FDA approval developed by igus, which also do without additional lubrication, xiros ball bearings are perfectly suited for applications in the food industry and medical technology.

Plastic ball bearings are non-magnetic and current-insulated

Non-magnetic, electrically insulating ball bearings

Wherever it is necessary to avoid metal, the non-magnetic, electrically insulated polymer ball bearings are always the first choice. In the xiros product range, you can find both purely polymer ball bearings and also versions with balls made of glass.
The product range also includes conductive and detectable polymer ball bearings.

Polymer ball bearings are resistant to chemicals

Chemical-resistant polymer ball bearings

The chemical-resistant plastics developed by igus enable a smooth running of xiros ball bearings, even when they make contact with aggressive chemicals. The specified durability and calculated service life are based on data from our test laboratory.
The chemical-resistant plastic ball bearings do without expensive special lubricants that are needed in applications exposed to aggressive chemicals.


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The terms "igus", "Apiro", "CFRIP", "chainflex", "conprotect", "CTD", "drygear", "drylin", "dryspin", "dry-tech", "easy chain", "e-chain", "e-chain systems", "e-loop", "e-ketten", "e-kettensysteme", "e-spool", "e-skin", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "print2mold", "readycable", "readychain", "ReBeL", "robolink", "speedigus", "tribofilament", "triflex", "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, Mitsubishi, NUM, Parker, Bosh Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mentioned on this website. The products offered by igus® are those of igus® GmbH.