Roller Chain Size Chart - Average Tensile Strength, Load, and Weight Specifications

Oct 12, 2026

Roller Chain Size Chart provides a structured reference of roller chain specifications across multiple standards, pitch values, and chain designations (e.g., BS and ANSI, plus single and double row types). For each listed chain size, the chart records key dimensional parameters such as pitch, roller width and diameter, pin diameter and length, plate height and thickness, as well as translated pitch information. It also includes performance-related fields including average tensile strength, maximum allowable load, and average chain weight (kg/m) for engineering selection and comparison.

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CategoryGeneral

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Roller chain standards and pitch ranges

Chain designation and dimensional parameters

Average tensile strength, maximum allowable load, and weight

Roller Chain Size Chart | STANDARD | PITCH | SY
Chain
No. | Dimension-mm | | | | | | | | | | | | | Average
Tensile
Strength | Maximum
Allowable
Load | Average
Chain
Weight | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | Pitch | Roller | | | Pin | | | | | Plate | | | Trans.
Pitch | | | | | | | | | Width | Roller | Dia. | Dia. | Length | | | | Height | Thickness | | | | | | | | | | P | W | type | R | D | LR | LC | L1 | L2 | H | T1 | T2 | TP | KN | KN | kg/m | | BS | SINGLE | SY 06B-1
SY 06B-2 | 9.525 5.72 - 6.35 3.28 | | | | | 12.6 13.4
22.9 23.7 | | 6.3 7.1 8.2 1.0 1.25 10.24 | | | | | | 9.90 1.70 0.41
18.80 2.90 0.78 | | | | | | SY 08B-1
SY 08B-2 | 12.70 7.75 - 8.51 4.45 | | | | | 16.7 18.2
30.6 31.9 | | 8.4 9.8 11.8 1.5 13.92 | | | | | | 19.60
34.60 | 3.14
5.35 | 0.61
1.26 | | | | SY 10B-1
SY 10B-2 | 15.875 9.65 - 10.16 5.08 | | | | | 19.4 20.7
36.0 37.3 | | 9.7 11.0 14.7 1.65 16.59 | | | | | | 24.60 4.90 0.89
49.40 8.33 1.79 | | | | | | SY 12B-1
SY 12B-2 | 19.05 11.68 - 12.07 5.72 | | | | | 22.0 23.6
41.6 43.2 | | 11.0 12.6 16.1 1.8 19.46 | | | | | | 32.20
64.40 | 7.06
12.00 | 1.14
2.28 | | | | SY 16B-1
SY 16B-2 | 25.40 17.02 - 15.88 8.26 | | | | | 35.2 38.2
67.2 70.1 | | 17.6 20.6 21.0 3.2 4.0 31.88 | | | | | | 66.60
117.80 | 16.40
21.40 | 2.59
5.13 | | | | SY 20B-1
SY 20B-2 | 31.75 19.56 - 19.05 10.16 | | | | | 40.2 44.0
76.8 80.6 | | 20.1 23.9 26.4 3.5 4.5 36.45 | | | | | | 105.00 25.50 3.76
188.90 33.30 7.26 | | | | | | SY 24B-1
SY 24B-2 | 38.10 25.40 - 25.40 14.63 | | | | | 53.4 58.1
101.8 106.5 | | 26.7 31.4 33.4 5.0 5.9 48.36 | | | | | | 177.80
311.10 | 35.70
46.80 | 7.29
14.53 | | | | SY 28B-1
SY 28B-2 | 44.45 31.00 - 27.94 15.88 | | | | | 65.1 70.5
124.7 130.0 | | 32.6 37.9 37.0 6.3 7.4 59.56 | | | | | | 222.20
400.00 | 44.50
58.30 | 9.26
18.45 | | | | SY 32B-1
SY 32B-2 | 50.80 31.00 - 29.21 17.81 | | | | | 65.0 71.1
123.4 129.7 | | 32.5 38.6 42.2 6.3 6.9 58.55 | | | | | | 275.00
500.00 | 51.00
66.60 | 9.92
19.76 | | ANSI | | SY 35-1
SY 35-2 | 9.525 4.78 - ▲5 .08 3.58 | | | | | 12.0
22.1 | 12.9
23.0 | 6.0
11.1 | 6.9
11.9 | 9.0 1.25 | | | -
10.1 | 10.80
21.60 | 2.48
3.67 | 0.34
0.63 | | | | SY 40-1
SY 40-2 | 12.70 7.95 - 7.92 3.96 | | | | | 16.6
30.8 | 17.7
32.2 | 8.3
15.4 | 9.4
16.8 | 11.7 1.5 | | | -
14.4 | 19.10
38.20 | 4.17
6.17 | 0.60
1.22 | | | | SY 50-1
SY 50-2 | 15.875 9.53 - 10.16 5.08 | | | | | 20.5
38.4 | 22.0
40.0 | 10.2
19.2 | 11.8
20.8 | 14.6 2.0 | | | -
18.1 | 31.90 7.22 0.98
63.80 10.70 2.00 | | | | | | SY 60-1
SY 60-2 | 19.05 12.70 - 11.91 5.95 | | | | | 25.7
48.2 | 26.9
49.7 | 12.8
24.0 | 14.1
25.7 | 17.5 2.4 | | | -
22.8 | 43.10
86.20 | 10.70
14.70 | 1.46
2.95 | | | | SY 80-1
SY 80-2 | 25.40 15.88 - 15.88 7.93 | | | | | 33.0
61.6 | 35.5
64.5 | 16.4
30.8 | 19.1
33.7 | 23.4 3.2 | | | -
29.3 | 78.50
157.00 | 19.10
25.00 | 2.52
5.10 | | | | SY 100-1
SY 100-2 | 31.75 19.05 - 19.05 9.53 | | | | | 39.6
75.1 | 43.0
78.8 | 19.7
37.6 | 23.3
41.2 | 29.3 4.0 | | | -
35.8 | 118.00
236.00 | 29.40
38.40 | 3.91
7.74 | | | | SY 120-1
SY 120-2 | 38.10 25.40 - 22.23 11.10 | | | | | 49.7
94.9 | 53.4
98.8 | 24.8
47.5 | 28.6
51.3 | 35.1 4.8 | | | -
45.4 | 167.00
334.00 | 39.50
51.70 | 5.76
11.49 | | | | SY 140-1
SY 140-2 | 44.45 25.40 - 25.40 12.70 | | | | | 54.0
102.9 | 58.3
107.2 | 27.0
51.5 | 31.3
55.7 | 40.9 5.6 | | | -
48.9 | 216.00
432.00 | 52.30
68.30 | 7.41
14.63 | | |

FAQs

What information does the roller chain size chart provide for each chain type?

It lists the chain designation and pitch-related values, dimensional measurements (such as roller and pin geometry), and performance data including average tensile strength, maximum allowable load, and average chain weight.

How are different chain standards organized in the chart?

Chains are grouped under standards like BS and ANSI, and further subdivided by pitch and chain numbers (e.g., SY series variants) to compare sizes within the same specification family.

Why are the “average tensile strength” and “maximum allowable load” fields important?

They indicate the strength and loading limits used to select a chain size that can safely handle the intended mechanical duty, while “average chain weight” supports mass and handling considerations.

Oct 12, 2026

Uploaded by Olivia Brown