10
9
8.5
5.9
5
4.6
4
3.5
2.9
2.1
1.5
11.3
9
-
11.3
9
COMPOSITE
OUTPUT TORQUE (Nm)
FINAL
R.P.M.
COMPOSITE
RATIO
Single Reduction Worm Gear Units
Variable Speed A.C. D.C. Series or D.C. Shunt Wound
Enclosures: Standard SD 11 SD 12 Drip Proof Internal Fan Cooled (IP 23)
Alternative Totally Enclosed (IP 50) with Terminal Box (IP 54)
Gearbox Type:
L/LB/LH/LHB
Speed Range: 33 780 r.p.m.
SD 12 L
Voltage, Construction, Connections, Motor Performance
Specifications and Optional Extras
see pages 44 and 46 for full details.
LH/LHB for hollow shaft details see page 114.
(1 Nm = 8.85 lbs. ins.) (1 Nm = 10.2 cmkp)
Gearbox
Specification
Motor Speed
2000 r.p.m.
Series
Motor Rating
50 watts
SD 12 L/LB/LH/LHB
Shunt
Motor Rating
60 watts
33
40
50
66
80
100
130
166
222
279
390
60:1
50:1
40:1
30:1
25:1
20 1/2:1
15 1/3:1
12 1/3:1
9: 1/41
7 1/6:1
5 1/8:1
5
4.5
4
3.2
2.8
2.5
2
1.8
1.5
1.13
0.85
6
5.4
4.7
3.8
3.4
3
2.5
2.1
1.8
1.4
1
COMPOSITE
OUTPUT TORQUE (Nm)
FINAL
R.P.M.
COMPOSITE
RATIO
Gearbox
Specification
Motor Speed
3000 r.p.m.
Series
Motor Rating
95 watts
SD 12 L/LB/LH/LHB
Shunt
Motor Rating
125 watts
50
60
75
100
120
150
200
250
333
419
585
60:1
50:1
40:1
30:1
25:1
20 1/2:1
15 1/3:1
12 1/3:1
9 1/4:1
7 1/6:1
5 1/8:1
8.5
7.3
6.8
4.5
3.8
3.6
3.2
2.7
2.3
1.7
1.1
COMPOSITE BRONZE
OUTPUT TORQUE (Nm)
FINAL
R.P.M.
COMPOSITE BRONZE
RATIO
Gearbox
Specification
Motor Speed
4000 r.p.m.
Series
Motor Rating
150 watts
SD 12 L/LB/LH/LHB
Shunt
Motor Rating
150 watts
67
80
100
133
160
195
267
333
444
558
780
60:1
50:1
40:1
30:1
25:1
20 1/2:1
15 1/3:1
12 1/3:1
9 1/4:1
7 1/6:1
5 1/8:1
8
7
6.3
5
4.6
4
3.2
2.8
2.3
1.8
1.4
8
7.1
6.3
5
4.6
4
3.2
2.8
2.3
1.8
1.4
SD 12 LF
SD 12 LB
52