Stock Bore Type B Sprockets 25 Chain

25 Roller Chain Sprockets

Description

All PLI sprockets are manufactured using the ISO 9001 quality management system. B type sprockets have a stock bore and usually require some altering before installation. B Type sprockets have a hub on one side. The teeth will be hardened on sprockets with 40 or fewer teeth.

Model Specifications 

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Stock Bore Type B Sprockets 25 Chain

Part No.No. of TeethOutside DiameterPitch DiameterStock BoreMax BoreHub Dia.L.T.B.Wgt. Lbs.
Part No.:
25B10
No. of Teeth:
10
Outside Diameter:
0.919"
Pitch Diameter:
0.809"
Stock Bore:
1/4"
Max Bore:
1/4"
Hub Dia.:
1/2"
L.T.B.:
1/2"
Wgt. Lbs.:
0.03
Part No.:
25B11
No. of Teeth:
11
Outside Diameter:
1.002"
Pitch Diameter:
0.887"
Stock Bore:
1/4"
Max Bore:
5/16"
Hub Dia.:
9/16"
L.T.B.:
1/2"
Wgt. Lbs.:
0.04
Part No.:
25B12
No. of Teeth:
12
Outside Diameter:
1.083"
Pitch Diameter:
0.966"
Stock Bore:
1/4"
Max Bore:
3/8"
Hub Dia.:
5/8"
L.T.B.:
1/2"
Wgt. Lbs.:
0.06
Part No.:
25B13
No. of Teeth:
13
Outside Diameter:
1.167"
Pitch Diameter:
1.045"
Stock Bore:
1/4"
Max Bore:
7/16"
Hub Dia.:
23/32"
L.T.B.:
1/2"
Wgt. Lbs.:
0.07
Part No.:
25B14
No. of Teeth:
14
Outside Diameter:
1.246"
Pitch Diameter:
1.124"
Stock Bore:
1/4"
Max Bore:
9/16"
Hub Dia.:
13/16"
L.T.B.:
1/2"
Wgt. Lbs.:
0.08
Part No.:
25B15
No. of Teeth:
15
Outside Diameter:
1.326"
Pitch Diameter:
1.203"
Stock Bore:
1/4"
Max Bore:
9/16"
Hub Dia.:
57/64"'
L.T.B.:
1/2"
Wgt. Lbs.:
0.1
Part No.:
25B16
No. of Teeth:
16
Outside Diameter:
1.407"
Pitch Diameter:
1.282"
Stock Bore:
1/4"
Max Bore:
9/16"
Hub Dia.:
31/32"
L.T.B.:
1/2"
Wgt. Lbs.:
0.12
Part No.:
25B17
No. of Teeth:
17
Outside Diameter:
1.487"
Pitch Diameter:
1.361"
Stock Bore:
1/4"
Max Bore:
5/8"
Hub Dia.:
1 1/32"
L.T.B.:
1/2"
Wgt. Lbs.:
0.14
Part No.:
25B18
No. of Teeth:
18
Outside Diameter:
1.568"
Pitch Diameter:
1.44"
Stock Bore:
1/4"
Max Bore:
3/4"
Hub Dia.:
1 1/8"
L.T.B.:
1/2"
Wgt. Lbs.:
0.16
Part No.:
25B19
No. of Teeth:
19
Outside Diameter:
1.648"
Pitch Diameter:
1.519"
Stock Bore:
1/4"
Max Bore:
13/16"
Hub Dia.:
1 7/32"
L.T.B.:
1/2"
Wgt. Lbs.:
0.19
Part No.:
25B20
No. of Teeth:
20
Outside Diameter:
1.729"
Pitch Diameter:
1.598"
Stock Bore:
1/4"
Max Bore:
7/8"
Hub Dia.:
1 9/32"
L.T.B.:
5/8"
Wgt. Lbs.:
0.25
Part No.:
25B21
No. of Teeth:
21
Outside Diameter:
1.809"
Pitch Diameter:
1.678"
Stock Bore:
1/4"
Max Bore:
7/8"
Hub Dia.:
1 3/8"
L.T.B.:
5/8"
Wgt. Lbs.:
0.28
Part No.:
25B22
No. of Teeth:
22
Outside Diameter:
1.889"
Pitch Diameter:
1.757"
Stock Bore:
1/4"
Max Bore:
15/16"
Hub Dia.:
1 7/16"
L.T.B.:
5/8"
Wgt. Lbs.:
0.31
Part No.:
25B23
No. of Teeth:
23
Outside Diameter:
1.969"
Pitch Diameter:
1.836"
Stock Bore:
1/4"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.32
Part No.:
25B24
No. of Teeth:
24
Outside Diameter:
2.049"
Pitch Diameter:
1.915"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.33
Part No.:
25B25
No. of Teeth:
25
Outside Diameter:
2.129"
Pitch Diameter:
1.995"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.34
Part No.:
25B26
No. of Teeth:
26
Outside Diameter:
2.209"
Pitch Diameter:
2.074"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.35
Part No.:
25B27
No. of Teeth:
27
Outside Diameter:
2.289"
Pitch Diameter:
2.153"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.35
Part No.:
25B28
No. of Teeth:
28
Outside Diameter:
2.369"
Pitch Diameter:
2.233"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.36
Part No.:
25B29
No. of Teeth:
29
Outside Diameter:
2.449"
Pitch Diameter:
2.312"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.37
Part No.:
25B30
No. of Teeth:
30
Outside Diameter:
2.529"
Pitch Diameter:
2.392"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.38
Part No.:
25B32
No. of Teeth:
32
Outside Diameter:
2.688"
Pitch Diameter:
2.551"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
5/8"
Wgt. Lbs.:
0.4
Part No.:
25B36
No. of Teeth:
36
Outside Diameter:
3.008"
Pitch Diameter:
2.869"
Stock Bore:
3/8"
Max Bore:
1"
Hub Dia.:
1 1/2"
L.T.B.:
3/4"
Wgt. Lbs.:
0.5
Part No.:
25B40
No. of Teeth:
40
Outside Diameter:
3.327"
Pitch Diameter:
3.187"
Stock Bore:
1/2"
Max Bore:
1 3/8"
Hub Dia.:
2"
L.T.B.:
3/4"
Wgt. Lbs.:
0.53
Part No.:
25B45
No. of Teeth:
45
Outside Diameter:
3.725"
Pitch Diameter:
3.584"
Stock Bore:
1/2"
Max Bore:
1 3/8"
Hub Dia.:
2"
L.T.B.:
3/4"
Wgt. Lbs.:
0.56
Part No.:
25B48
No. of Teeth:
48
Outside Diameter:
3.964"
Pitch Diameter:
3.823"
Stock Bore:
1/2"
Max Bore:
1 3/8"
Hub Dia.:
2"
L.T.B.:
3/4"
Wgt. Lbs.:
0.6
Part No.:
25B54
No. of Teeth:
54
Outside Diameter:
4.442"
Pitch Diameter:
4.300"
Stock Bore:
1/2"
Max Bore:
1 3/8"
Hub Dia.:
2"
L.T.B.:
3/4"
Wgt. Lbs.:
1
Part No.:
25B60
No. of Teeth:
60
Outside Diameter:
4.920"
Pitch Diameter:
4.777"
Stock Bore:
1/2"
Max Bore:
1 3/8"
Hub Dia.:
2"
L.T.B.:
3/4"
Wgt. Lbs.:
1.1

*Has recessed groove in hub for chain clearance. 1/4" Pitch, Nominal = 0.110", Maximun bores shown will accommodate standard keyseat & setscrew over Keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to