Technical Information High Precision Ball Bearings New GMN Precision Classes P4+ and UP+ BEARING DESIGNATION Example Bearing size - Bearings made of bearing steel 100Cr6 have no designation HY Balls and rings made of different materials (hybrid bearings) S Standard spindle bearings SM Standard spindle bearings for higher speeds KH Standard spindle bearings for higher speeds, with seal 6008 Designation of dimension series and bore diameter 2RZ Seal on both sides Nominal contact angle Bearing sets Bearing arrangement and preload TA Laminated phenolic resin cage guided in outer ring TXM Plastic cage made of PEEK and guided in outer ring, ball-retaining P4+ GMN standard precision as per GMN specification (running accuracy as per ISO 2 / DIN P2 ; dimensional accuracy as per ISO 4 / DIN P4 ) UP+ GMN ultra precision as per GMN specification (running accuracy as per ISO 2 / DIN P2 or better) D 2 bearings - Standard preservation (ungreased) T274 Tribology code, e.g. grease LUBCON Turmogrease HS L252 Deviation of bore diameter d = Deviation of outside diameter D= Width deviation B= ... standard marking on ball bearing and packaging High point marking Ri ... standard marking on ball bearing inner ring We reserve the right to make technical modifications, typographical errors and mistakes. GMN Paul Muller Industrie GmbH & Co. KG AuGere Bayreuther Strafe 230 • D-90411 Nurnberg [email protected] www.gmn.de

Technical Information High Precision Ball Bearings New GMN Precision Classes P4+ and UP+TRIBOLOGY CODE Example HY SM 6006 C TA P4+ UL T274 Grease code T274 -grease LUBCON Turmogrease Highspeed L252 Nominal grease volume and grease volume tolerance as per GMN standard S; SM: 30% +/-5% of the free space Grease code T274 -grease LUBCON Turmogrease Highspeed L252 Grease volume deviating from GMN standard Example: 25% +/-5% of the free space Grease code T274 -grease LUBCON Turmogrease Highspeed L252 Grease volume tolerance deviating from GMN standard Example: 15% - 20% of the free space Overview of...