ANSI Roller Chain Size Charts
Our informative and simple size charts are designed to make it easy to identify an existing ANSI roller chain or to design a conveyor or drive based on dimensional requirements. ANSI stands for the American National Standards Institute, so these chain sizes are common here in North America, but are also found in other parts of the world. The size charts below cover standard single-, double-, triple-, quad-, and heavy-series ANSI chain sizes. If you don't see the roller chain size you need for a new application or are having trouble identifying an existing chain, contact us, and we will assist you in identifying your chain and connect you with your nearest authorized DUROCHAIN distributor! Please note, it is always recommended to use calipers when measuring precision roller chains.
ANSI Single-Strand Roller Chain Size Chart
Single-strand ANSI roller chains are also commonly known as simplex roller chains. They consist of a single row of roller chain and can also be designated with a -1 behind the chain size.
![]()
| Chain Size | Pitch (P) | Roller Width (R) | Roller Diameter (D) | Overall Width (W) | CL Overall Width (X) | Plate Height (H) | Plate Thickness (T) | Pin Diameter (L) | Min. Breaking Load (LBS) | Weight Per Foot (LBS) | PDF Print |
|---|
| 25H | 0.250" | 0.125" | 0.130" | 0.354" | 0.453" | 0.232" | -- | 0.091" | 1,080 | 0.12 | ![]()
|
| 35 | 0.375" | 0.188" | 0.200" | 0.520" | 0.644" | 0.356" | 0.050" | 0.141" | 1,759 | 0.22 | ![]()
|
| 40 | 0.500" | 0.312" | 0.312" | 0.645" | 0.685" | 0.475" | 0.058" | 0.156" | 4,056 | 0.42 | ![]()
|
| 41 | 0.500" | 0.250" | 0.306" | 0.583" | 0.736" | 0.390" | 0.050" | 0.141" | 2,006 | 0.28 | ![]()
|
| 50 | 0.625" | 0.375" | 0.400" | 0.805" | 0.862" | 0.594" | 0.079" | 0.200" | 5,952 | 0.68 | ![]()
|
| 60 | 0.750" | 0.500" | 0.469" | 1.000" | 1.058" | 0.712" | 0.093" | 0.234" | 8,377 | 0.97 | ![]()
|
| 80 | 1.000" | 0.625" | 0.625" | 1.319" | 1.532" | 0.950" | 0.125" | 0.312" | 17,196 | 1.71 | ![]()
|
| 100 | 1.250" | 0.750" | 0.750" | 1.612" | 1.708" | 1.188" | 0.157" | 0.375" | 25,749 | 2.65 | ![]()
|
| 120 | 1.500" | 1.000" | 0.875" | 1.969" | 2.110" | 1.422" | 0.189" | 0.437" | 37,632 | 3.79 | ![]()
|
| 140 | 1.750" | 1.000" | 1.000" | 2.121" | 2.289" | 1.663" | 0.219" | 0.500" | 44,615 | 4.96 | ![]()
|
| 160 | 2.000" | 1.250" | 1.125" | 2.575" | 2.697" | 1.901" | 0.255" | 0.563" | 56,394 | 6.32 | ![]()
|
| 180 | 2.250" | 1.406" | 1.406" | 2.910" | 3.268" | 2.130" | 0.283" | 0.687" | 78,925 | 9.04 | ![]()
|
| 200 | 2.500" | 1.500" | 1.562" | 3.161" | 3.563" | 2.376" | 0.312" | 0.782" | 102,184 | 10.31 | ![]()
|
| 240 | 3.000" | 1.875" | 1.875" | 3.760" | 4.173" | 2.850" | 0.375" | 0.937" | 116,955 | 16.40 | ![]()
|
ANSI Double-Strand Roller Chain Size Chart
Double-strand ANSI roller chains are also commonly known as duplex roller chains. They consist of two rows of roller chains and can also be designated with a -2 behind the chain size.
![double strand roller chain drawing]()
| Chain Size | Pitch (P) | Roller Width (R) | Roller Diameter (D) | Overall Width (W) | CL Overall Width (X) | Plate Height (H) | Plate Thickness (T) | Pin Diameter (L) | Load Capacity | Weight Per Foot (LBS) | PDF Print |
|---|
| 25-2 | 0.250" | 0.125" | 0.130" | 0.610" | 0.709" | 0.232" | 0.030" | 0.091" | 1,631 | 0.18 | ![]()
|
| 35-2 | 0.375" | 0.188" | 0.200" | 0.876" | 0.916" | 0.356" | 0.050" | 0.141" | 3,527 | 0.46 | ![]()
|
| 40-2 | 0.500" | 0.312" | 0.312" | 1.213" | 1.358" | 0.475" | 0.058" | 0.156" | 8,113 | 0.85 | ![]()
|
| 50-2 | 0.625" | 0.375" | 0.400" | 1.518" | 1.576" | 0.594" | 0.079" | 0.200" | 11,904 | 1.37 | ![]()
|
| 60-2 | 0.750" | 0.500" | 0.469" | 1.898" | 1.955" | 0.712" | 0.093" | 0.234" | 16,755 | 2.04 | ![]()
|
| 80-2 | 1.000" | 0.625" | 0.625" | 2.492" | 2.693" | 0.950" | 0.125" | 0.312" | 34,392 | 3.41 | ![]()
|
| 100-2 | 1.250" | 0.750" | 0.750" | 3.020" | 3.149" | 1.188" | 0.157" | 0.375" | 51,499 | 5.28 | ![]()
|
| 120-2 | 1.500" | 1.000" | 0.875" | 3.758" | 3.899" | 1.425" | 0.189" | 0.437" | 75,265 | 7.88 | ![]()
|
| 140-2 | 1.750" | 1.000" | 1.000" | 4.114" | 4.417" | 1.663" | 0.219" | 0.500" | 89,331 | 10.03 | ![]()
|
| 160-2 | 2.000" | 1.250" | 1.125" | 4.902" | 5.236" | 1.901" | 0.255" | 0.563" | 112,788 | 13.48 | ![]()
|
| 180-2 | 2.250" | 1.406" | 1.406" | 5.504" | 5.874" | 2.130" | 0.283" | 0.687" | 157,850 | 17.65 | ![]()
|
| 200-2 | 2.500" | 1.500" | 1.562" | 5.980" | 6.382" | 2.376" | 0.312" | 0.782" | 204,368 | 21.95 | ![]()
|
| 240-2 | 3.000" | 1.875" | 1.875" | -- | -- | 2.850" | 0.375" | 0.937" | -- | 32.45 | ![]()
|
ANSI Triple-Strand Roller Chain Size Chart
Triple-strand ANSI roller chains are also commonly known as triplex roller chains. They consist of three rows of roller chains and can also be designated with a -3 behind the chain size.
![Triple Strand Roller Chain Drawing]()
| Chain Size | Pitch (P) | Roller Width (R) | Roller Diameter (D) | Overall Width (W) | CL Overall Width (X) | Plate Height (H) | Plate Thickness (T) | Pin Diameter (L) | Load Capacity | Weight Per Foot (LBS) | PDF Print |
|---|
| 40-3 | 0.500" | 0.312" | 0.312" | 1.831" | 1.965" | 0.475" | 0.058" | 0.156" | 12,169 | 1.3 | ![]()
|
| 50-3 | 0.625" | 0.375" | 0.400" | 2.284" | 2.433"
| 0.594" | 0.079" | 0.200" | 17,857 | 2.1 | ![]()
|
| 60-3 | 0.750" | 0.500" | 0.469" | 2.495" | 2.852" | 0.712" | 0.093" | 0.234" | 25,132 | 3.1 | ![]()
|
| 80-3 | 1.000" | 0.625" | 0.625" | 3.646" | 3.847" | 0.950" | 0.125" | 0.312" | 51,588 | 5.3 | ![]()
|
| 100-3 | 1.250" | 0.750" | 0.750" | 4.437" | 4.669" | 1.188" | 0.157" | 0.375" | 77,249 | 7.9 | ![]()
|
| 120-3 | 1.500" | 1.000" | 0.875" | 5.579" | 5.839" | 1.425" | 0.189" | 0.437" | 112,898 | 11.8 | ![]()
|
| 140-3 | 1.750" | 1.000" | 1.000" | 6.039" | 6.343" | 1.663" | 0.219" | 0.500" | 133,996 | 14.9 | ![]()
|
| 160-3 | 2.000" | 1.250" | 1.125" | 7.209" | 7.543" | 1.901" | 0.255" | 0.563" | 169,182 | 20.2 | ![]()
|
| 180-3 | 2.250" | 1.406" | 1.406" | 8.095" | 8.465" | 2.130" | 0.283" | 0.687" | 236,776 | 25.7 | ![]()
|
| 200-3 | 2.500" | 1.500" | 1.562" | 8.795" | 9.197" | 2.376" | 0.312" | 0.782" | 306,552 | 32.9 | ![]()
|
| 240-3 | 3.000" | 1.875" | 1.875" | -- | -- | 2.850" | 0.375" | 0.937" | -- | 48.1 | ![]()
|
ANSI Four-Strand Roller Chain Size Chart
Four-strand ANSI roller chains are also commonly known as quad-strand roller chains. They consist of four rows of roller chains and can also be designated with a -4 behind the chain size.
![Quad Strand Roller Chain Drawing]()
| Chain Size | Pitch (P) | Roller Width (R) | Roller Diameter (D) | Overall Width (W) | CL Overall Width (X) | Plate Height (H) | Plate Thickness (T) | Pin Diameter (L) | Load Capacity | Weight Per Foot (LBS) | PDF Print |
|---|
| 40-4 | 0.500" | 0.312" | 0.312" | 2.398" | 2.532" | 0.475" | 0.058" | 0.156" | 16,226 | 1.65 | ![]()
|
| 50-4 | 0.625" | 0.375" | 0.400" | 3.000" | 3.150" | 0.594" | 0.079" | 0.200" | 23,809 | 2.72 | ![]()
|
| 60-4 | 0.750" | 0.500" | 0.469" | 3.748" | 3.913" | 0.712" | 0.093" | 0.234" | 33,510 | 3.97 | ![]()
|
| 80-4 | 1.000" | 0.625" | 0.625" | 4.799" | 5.000" | 0.950" | 0.125" | 0.312" | 68,784 | 6.75 | ![]()
|
| 100-4 | 1.250" | 0.750" | 0.750" | 5.847" | 6.079" | 1.188" | 0.157" | 0.375" | 102,999 | 10.27 | ![]()
|
| 120-4 | 1.500" | 1.000" | 0.875" | 7.394" | 7.661" | 1.425" | 0.189" | 0.437" | 150,531 | 14.97 | ![]()
|
| 140-4 | 1.750" | 1.000" | 1.000" | 7.961" | 8.264" | 1.663" | 0.219" | 0.500" | 178,662 | 18.84 | ![]()
|
| 160-4 | 2.000" | 1.250" | 1.125" | 9.512" | 9.847" | 1.901" | 0.255" | 0.563" | 225,576 | 25.88 | ![]()
|
| 180-4 | 2.250" | 1.406" | 1.406" | 10.685" | 11.055" | 2.130" | 0.283" | 0.687" | 315,701 | 39.44 | ![]()
|
| 200-4 | 2.500" | 1.500" | 1.562" | 11.614" | 12.016" | 2.376" | 0.312" | 0.782" | 408,737 | 43.25 | ![]()
|
| 240-4 | 3.000" | 1.875" | 1.875" | 14.228" | 14.697" | 2.850" | 0.375" | 0.937" | 467,820 | 61.22 | ![]()
|
ANSI Heavy-Duty Roller Chain Size Chart
Heavy roller chains are designated with an "H" after the chain size; this series of ANSI roller chains uses thicker side plates for increased strength and shock-load capacity.
![]()
| Chain Size | Pitch (P) | Roller Width (R) | Roller Diameter (D) | Overall Width (W) | CL Overall Width (X) | Plate Height (H) | Plate Thickness (T) | Pin Diameter (L) | Load Capacity | Weight Per Foot (LBS) | PDF Print |
|---|
| 40H | 0.500" | 0.312" | 0.312" | 0.723" | 0.764" | 0.475" | 0.079" | 0.156" | 4,056 LBS | 0.47 | ![]()
|
| 50H | 0.625" | 0.375" | 0.400" | 0.870" | 0.965" | 0.594" | 0.094" | 0.200" | 5,952 LBS | 0.75 | ![]()
|
| 60H | 0.750" | 0.500" | 0.469" | 1.228" | 1.410" | 0.712" | 0.125" | 0.234" | 11,243 LBS | 1.3 | ![]()
|
| 80H | 1.000" | 0.625" | 0.625" | 1.472" | 1.685" | 0.950" | 0.156" | 0.312" | 19,841 LBS | 2.1 | ![]()
|
| 100H | 1.250" | 0.750" | 0.750" | 1.752" | 1.992" | 1.188" | 0.187" | 0.375" | 25,749 LBS | 3.0 | ![]()
|
| 120H | 1.500" | 1.000" | 0.875" | 2.165" | 2.425" | 1.425" | 0.219" | 0.437" | 37,632 LBS | 4.4
| ![]()
|
| 140H | 1.750" | 1.000" | 1.000" | 2.323" | 2.614" | 1.663" | 0.250" | 0.500" | 44,665 LBS | 5.6 | ![]()
|
| 160H | 2.000" | 1.250" | 1.125" | 2.732" | 3.043" | 1.901" | 0.281" | 0.563" | 56,394 LBS | 6.9 | ![]()
|
