The world's smallest linear bearing

Complete range of precision linear bearings with extremely low friction

Linear bearings

MPS Microsystems is specialised in manufacturing high-precision, miniature linear bearings. The balls of these precision bearings meet ‘Grade 3’, the highest quality defined by the ISO 3290/DIN 5401 standard. Combined with a cage and a high precision casing, they allow rapid positioning while reducing friction and eliminating the stick-slip phenomenon.

The standard version of MPS Microsystems linear bearings consists of a stainless steel bushing and balls, and a brass cage. An all-stainless steel version or one with ceramic balls can be made on request.

All the standard references of MPS Microsystems precision bearings can be found in the online shop.


  • Smallest linear ball bearings in the world
  • Stainless steel bushing
  • Brass cage
  • Comprehensive range with bore diameters from Ø 1.5 mm to Ø 6 mm
  • Bore diameter tolerances +8/0 µm
  • Outer bushing tolerances 0/-8 µm
  • Customised shape and dimensions of the outer bushing (up to Ø 30 mm)
  • Exceptionally smooth and very low friction
  • Long service life
  • Ideal for precise positioning without stick-slip effect


  • Product catalogue
  • Application catalogue
  • Article - Medical Device Development

Linear bearing
Linear bearing
Linear bearing
Linear bearing
Linear bearing
Linear bearing

The world's smallest linear bearing

MPS Microsystems produces the smallest linear ball bearing in the world. With an inner diameter of 1.5 mm and an outer diameter of 3 mm, this linear bearing has four rows of 20 balls each with a total length of 4 mm. The balls are 0.3 mm in diameter.

E-shop for standard products

MPS Microsystems has developed an online shop where, in just a few clicks, you can order all the standard references of our linear systems: ball screws, linear bearings and ball bushings. Available items are dispatched to you within 3 days. Don’t forget to stop by!

Need information? Contact us!

Contact us now if you need our help with your requirements for linear bearings. Contact our sales team, our Product Manager, our representatives or our dealers.

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