QTL TAPER BUSHINGS
INSTALLATION
12
Reversibility
QTL Bushings can be divided into two series
according to reversibility.
Reversible mounting series: type JA-J
have
three screws and three bores on the flange.
Un-reversible mounting series: type M-W
have
four tapped holes on the flange and no un-tapped
holes.
QTL TAPER BUSHINGS
Sizes JA - S
Selection
Peak torque ratings must not exceed torque ratings shown in the chart above. Capacity values shown
are for S.F. 1 Light loading start, work even.
For more severe duty divide torque capacity by the service factor (K) shown in the chart.
Working torque on shaft: T=63025N/n (lbf.in) N-
transmission torque (house);
n-shaft revolutions per minute(RPM)
Calculation torque TO=KT,K-loading coefficient.
When selecting bushing type, it should comply with TH <
TO. Bushing torque capacity can be determined from the
given table.
lbf . in
N.m
lbf . in
N.m
JA
1,000
113
54
6.1
SH
3,500
396
108
12.2
SK
7,000
791
180
20.3
SF
11,000
1,243
360
40.8
E
20,000
2,260
720
81.4
F
30,000
3,390
900
102
J
45,000
5,090
1,620
183
M
85,000
9,600
2,700
305
N
150,000
17,000
3,600
408
P
250,000
28,300
5,400
610
W
375,000
42,400
7,200
814
S
625,000
70,600
9,000
1,020
Part No
Torque Capacity
Screw Tightening Torque
K
Load type
1.0 light loading start,work even
1.5 light loading start,work uneven
2.0 medium loading start,work even or uneven
2.5 light or heavy loading start,medium shock
3.0 lighty or heavy loading start,heavy shock or rotating
Type and load-bearing capacity
A bushing's load-bearing capacity is related with
tightening torque and shaft size and the load-bearing
capacity increases as the shaft size enlarges. If more
detailed information is required please contact
LEESON.
Torque capacity parameters and related screw
tightening torques in the table below:
IMPORTANT:
Screws must be tightened evenly. Over
tightening the screws may cause the hub or sheave
to crack.
TORQUE CAPACITY &
SCREW TIGHTENING TORQUE
BUSHINGS
SD/SDS 5,000 565 108 12.2
TM
®
