The designations of FAG spindle bearings consist of basic designation with supplementary designations. The designations for FAG spindle bearings is shown on the above diagram.
Prefixes - types
- B: Standard steel balls.
- HCB: Hybrid standard, Ceramic balls
- RS: High speed bearing, Steel balls
- HCRS: High speed bearing, Ceramic balls
- HS: Bearing with small balls, Steel balls
- HSS: Bearing with small balls, Steel balls, Sealed
- HC: Bearing with small balls, Ceramic balls
- HCS: Bearing with small balls, Ceramic balls, Sealed
- XC: Cronidur, bearing with small balls, Ceramic balls
- XCS: Cronidur, bearing with small balls, Ceramic balls, Sealed
Basic designations
FAG basic designation consiste of dimension series and bore code. Please refer to FAG bearing designation.
Dimension series
- 719: Light series
- 70: Medium series
- 72: Heavy series
Bore code
- 00: 10mm
- 01: 12mm
- 02: 15mm
- 03: 17mm
- 04: 4*5 = 20 mm
- 05: 5*5 = 25 mm
- ......
Suffixes
Contact angle
- C: 15°
- D: 20°
- E: 25°
Direct Lube or Sealing
- DLR: Direct lubrication, annular slots with O rings
- 2RSD: Sealed on both sides and greased
Cage
- T: Laminated fabric, guidance on outer ring
Accuracy
- P4S: FAG standard, better than P4 to DIN 620
- P4S-K5: Restricted diameter tolerance compared to P4S
Bearing arrangement
- U: Single bearing, arrangement in any combination
- DU: 2 bearing set, universal bearings
- TU: 3 bearing set, universal bearings
- QU: 4 bearing set, universal bearings
- PU: 5 bearing set, universal bearings
Preload
- L: Light
- M: Medium
- H: Heavy
