203TR Series Shaft Mounted Gear Drive
Double Reduction - 10:1 through 40:1 ratios Single Reduction - 5:1
MODEL
203TR05
203TR10
203TR15
203TR20
203TR25
203TR30
203TR35
203TR40
ACTUAL RATIOS
5.867
9.89
14.775
20.673
25.178
29.613
35.526
39.949
SHIPPING WEIGHT (LBS.)
134
140
QUICK RELEASE TAPERED BUSHINGS:
Bushing Kit No.*
Weight (Lbs.)
Type
Driven Shaft Dimensions (Inches)
Dia.
Keyway Width X Depth
Recommended Keyway Length
Minimum Driven Shaft Length
203T203
1
2 3/16
1/2 x 1/4
6 5/8
5 7/8
203T200
2
203T115
1 15/16
203T114
1 7/8
203T112
1 3/4
3/8 x 3/16
203T111
1 11/16
203T110
1 5/8
203T108
1 1/2
203T107
1 7/16
203T106
1 3/8
5/16 x 5/32
6 1/2
6 1/4
203T105
1 5/16
203T104
1 1/4
1/4 x 1/8
7 3/4
203T103
1 3/16
NOTES, OPTIONS & ACCESSORIES
MOTOR MOUNTS (2MM - 90 LBS.)
Motor brackets are shown in the intermediate position. The brackets can be raised or lowered 6 1/4 inches to the high or low position by moving to the next set of mounting holes.
The motor brackets can be mounted on either the long (6 o'clock) or short (3 o'clock) sides of the housing.
V-BELT CENTER DISTANCES FOR INTERMEDIATE MOUNTING POSITION (INCHES)
MOTOR MOUNT ORIENTATION
MOTOR FRAME SIZE
143T/145T
182T/184T
213T/215T
254T/256T
MIN.
MAX.
SINGLE REDUCTION
6:00
26.55
29.54
27.55
30.54
28.30
31.29
29.30
32.29
3:00
21.85
24.82
22.84
25.81
23.58
26.56
24.57
DOUBLE REDUCTION
26.67
29.66
27.67
30.65
28.41
31.40
29.41
32.39
17.62
20.58
18.60
21.57
19.34
22.31
20.33
23.30
FACE MOUNTING Face mounting holes are not drilled on standard units -- Contact factory if face mounting is desired.
TORQUE ARM
The preferred position for the torque arm is 90° to a line between the point of attachment of the torque arm to the drive and the low speed shaft. The torque arm must be in tension. Keep the torque plate in the position shown.
EXTERNAL BACKSTOP KIT
Backstop extensions are standard on double reduction drives and can be supplied on single reduction drives if specified when order is placed. See Backstop Kit section for backstop torque capacity. Kit no. BS203TR- 25:1 thru 40:1 ratios Kit no.BS203TR-1 - 10:1 thru 20:1 ratio Kit no.BS203TR-5 - 5:1 ratio
