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
Some FAG Spindle Bearings catalogue:
| Model | d | D | H | W |
| B7020-C-T-P4S | 100 mm | 150 mm | 24 mm | 1.24 KG |
| B7021-C-T-P4S | 105 mm | 160 mm | 26 mm | 1.61 KG |
| B7022-C-T-P4S | 110 mm | 170 mm | 28 mm | 1.95 KG |
| B7024-C-T-P4S | 120 mm | 180 mm | 28 mm | 2.08 KG |
| B7026-C-T-P4S | 130 mm | 200 mm | 33 mm | 3.16 KG |
| B7028-C-T-P4S | 140 mm | 210 mm | 33 mm | 3.35 KG |
| B7030-C-T-P4S | 150 mm | 225 mm | 35 mm | 4.04 KG |
| B7032-C-T-P4S | 160 mm | 240 mm | 38 mm | 5.04 KG |
| B7034-C-T-P4S | 170 mm | 260 mm | 42 mm | 6.52 KG |
| B7036-C-T-P4S | 180 mm | 280 mm | 46 mm | 8.79 KG |
| B7038-C-T-P4S | 190 mm | 290 mm | 46 mm | 9.2 KG |
| B7040-C-T-P4S | 200 mm | 310 mm | 51 mm | 11.6 KG |
| B7044-C-T-P4S | 220 mm | 340 mm | 56 mm | 15.7 KG |
| B7048-C-T-P4S | 240 mm | 360 mm | 56 mm | 16.8 KG |
