Phas-Lok®
Dimensions

Standard Bores and Keyways
Series A
Series B
Series C
BORE
KEYWAY
BORE
KEYWAY
BORE
KEYWAY
1/2
1/8 x 1/16
1
1/4 x 1/8
1 1/2
3/8 x 3/16
5/8
3/16 x 3/32
1 1/8
1/4 x 1/8
1 5/8
3/8 x 3/16
3/4
3/16 x 3/32
1 1/4
1/4 x 1/8
1 3/4
3/8 x 3/16
7/8
3/16 x 3/32
1 3/8
5/16 x 5/32
1 7/8
1/2 x 1/4
1 7/16
3/8 x 3/16
2
1/2 x 1/4
1 1/2
3/8 x 3/16
2 1/4
1/2 x 1/4
2 3/8
5/8 x 5/16
2 1/2
5/8 x 5/16
AX Bore for
Browning
G Bushing
BX Bore
for Browning
H Bushing
CX Bore
for Browning
Q1 Bushing

 

Physical Dimensions


Physical Dimensions
A
B
C
D
E
F
G
H
Series A
2 7/8
1 1/2
2 7/16
3/16
5/16
1 1/4
2 1/8 Dia. B/C
(3) 1/4-20 x 1/2
Series B
3 3/4
1 22/32
3 5/16
3/16
1/2
2 1/8
2 7/8 Dia. B/C
(3) 3/8-16 x 1/2
Series C
6 1/4
2 1/4
5 5/8
1/4
1/2
3 1/2
4 3/8 Dia. B/C
(3) 1/2-13 x 3/4

 

Minimum Sprocket Size (# Teeth)
Chain
25
35
41
40
50
60
80
100
120
 .
Series A
35
25
19
20
16
14
12
10
9
 .
Series B
52
32
24
24
21
18
14
12
11
.
Series C
84
54
39
40
32
27
25
20
18
 .

 

 

The right to make engineering refinements on all products is reserved.
Dimensions and other details subject to change.
When dimensions are critical, detailed drawings should be obtained from the factory.

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