Page 65 - NSK_CAT_E1102m_A7-141

TECHNICAL DATA

15. 4 Preload and Staring Torque (2) Preload Fa and Starting Torque M of Angular kgf . mm N . mm
Contact Ball Bearings and Double-Direction 30 300
(1) Axial Load Fa and Starting Torque M of Tapered Angular Contact Thrust Ball Bearings (Figs. 15.11
Roller Bearings (Figs. 15.9 and 15.10) and 15.12)

M = e μe Fa cosβ (N·mm), {kgf·mm} M = Ms Z sinα (N·mm), {kgf·mm}
(N·mm), {kgf·mm}
where where Ms is spin friction Starting Torque of Duplex Bearings
(for two bearings) 2M
μe : 0.20 Ms = —3 μs Q a E(k) 20 200 20
8 10 100 1128,14
When bearings with the same number are used in 22 16 08,10
opposition, the torque M caused by the preload 06
becomes 2M. where
04
μs = 0.15 02 S00eries
Dw1 72C
Qe F When bearings with the same number are used in 22 2010
opposition, the torque M caused by the preload 14
L becomes 2M. 00 Series
Q f μe Qf e 70C

2β Qi 00 500 1000 1500 2000 N
0α 0

Fig. 15.9 Relation between e and β 0 50 100 150 200 kgf
Preload Fa

Fig. 15.11 Preload and Starting Torque for Back-to-Back or Face-to-Face Arrangements
of Angular Contact Ball Bearings (α =15°)

kgf·mm N·mm 14 kgf . mm N . mm
5000 12 70 700

500 18 10 60 600 280TAC20
500 240TAC20
4000Starting Torque M 14D 14,16 08 Starting Torque M 200TAC20
400 12 06 50 150TAC20
16 14 12D 40 400 100TAC20
3000 10 10D 10 04 30 300
300 08 20 200 80TAC20
06 HR323JSeries 10 100
200 2000 18 06 08D HR322JSeries 60TAC20
06 1H40R8302JSeriesHR3030J4SeriesHR303DJSeries 50TAC20
100 1000 40TAC20

00 240TAC29
0 170TAC29
0 140TAC29
120TAC29
100TAC29

80TAC29
60TAC29

5000 10000 15000 N

500 1000 1500 kgf 00
Axial Load Fa 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 N

Fig. 15.10 Relation between Axial Load and Starting 0 100 200 300 400 500 600 700 800 900 kgf
Torque of Tapered Roller Bearings
Preload Fa
Fig. 15.12 Preload and Starting Torque of Double-Direction

Angular Contact Thrust Ball Bearings

A 134 A 135