Boston Gear • 800-825-6544
P-3002-BG
5
Notes:
1. X-On Application Only
2. For smaller sprockets, consult factory. As in most cases, a design
modification can be made.
B. Type “B” Housing
A Type “B” clutch is a basic unit and is sold without
any mounting hole arrangement. It is modified by
the customer for special applications.
Table 4 - Type “B” Housing Dimensions
Notes:
The “E” dimension on Table 4 shows pawl trunnion holes.
These holes are not through holes and they should be
avoided when mounting a coupling, sprocket, etc. to the
clutch.
Clutch
Size
Chain Size and Pitch
#25
1/4
Pitch
#35
3/8
Pitch
#40
1/2
Pitch
#41
1/2
Pitch
#50
5/8
Pitch
#60
3/4
Pitch
#80
1
Pitch
#100
1-1/4
Pitch
#120
1-1/2
Pitch
#140
1-3/4
Pitch
#160
2
Pitch
1
40
28
22
22
18
––––
––––
––––
––––
––––
––––
2
54
36
28
28
22
19
––––
––––
––––
––––
––––
3
X
45
34
36
28
25
19
––––
––––
––––
––––
4
X
X
42
45
36
30
23
19
––––
––––
––––
5
X
X
X
X
42
36
30
22
19
17
––––
Table 3 - Minimum Number Of Teeth Of Standard Plate Sprockets Adaptable To Type “T” Clutch
Size
A
B
C
D
E
F
+.000
-.002
G
1
.81
.81
1.06
.11
.31
1.500
.69
2
.90
1.25
1.37
.18
.37
1.875
.81
3
1.25
1.62
1.94
.29
.50
2.750
.94
4
1.56
2.12
2.37
.43
.56
2.828 1.48
5
1.94
2.62
3.00
.58
.69
4.000 1.62
"F"
Dia.
"G"
"E" Dia. Typ.
"D"
"A"
"B"
"C"
Figure 6 - Type “B” Housing Configuration