FAG spindle bearings

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