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Roller Chain Sprocket
The Martin double, also known as a duplex, type B sprocket is suitable for use with the series 80-2 chain with 1” pitch for driver or driven sprocket applications. Varying numbers of teeth and pitch diameters offer application flexibility. Made from high carbon steel, it has high strength and durability. Multiple chain capability allows for more power at higher operational speeds with greater load capacity.
roller chain sprocket
For use with 80-2 chain, 1" pitch for driver or driven sprocket applications
Double type B sprocket offers a stable and secure attachment to the shaft, and can be modified to suit a wide variety of applications requiring two chains
Shaft diameter options range from 1 to 1-1/2" for a variety of applications
Varying numbers of teeth and pitch diameter sizes offer application flexibility
High carbon steel for strength and durability
The Martin double, also known as a duplex, type B sprocket is suitable for use with the series 80-2 chain with 1” pitch for driver or driven sprocket applications. Varying numbers of teeth and pitch diameters offer application flexibility. Made from high carbon steel, it has high strength and durability. Multiple chain capability allows for more power at higher operational speeds with greater load capacity.
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With Keyway
Without Keyway
For ANSI 25 Roller Chain (1/4" Pitch)
|
Number of Teeth |
For Shaft Dia. |
OD |
Overall Wd. |
Hub Dia. | Wd. | Dp. | Material | Includes | |
| 9 | 1/4" | 0.84" | 1/2" | 7/16" | __ | __ | Steel | Two Set Screws | 2737T1 |
| 10 | 1/4" | 0.92" | 1/2" | 1/2" | __ | __ | Steel | Two Set Screws | 2737T2 |
| 11 | 1/4" | 1" | 1/2" | 9/16" | __ | __ | Steel | Two Set Screws | 2737T3 |
| 12 | 1/4" | 1.08" | 1/2" | 5/8" | __ | __ | Steel | Two Set Screws | 2737T101 |
| 12 | 3/8" | 1.08" | 1/2" | 5/8" | __ | __ | Steel | Two Set Screws | 2737T102 |
| 13 | 1/4" | 1.17" | 1/2" | 23/32" | __ | __ | Steel | Two Set Screws | 2737T103 |
| 13 | 3/8" | 1.17" | 1/2" | 23/32" | __ | __ | Steel | Two Set Screws | 2737T104 |
| 14 | 1/4" | 1.25" | 1/2" | 13/16" | __ | __ | Steel | Two Set Screws | 2737T105 |
| 14 | 3/8" | 1.25" | 1/2" | 13/16" | __ | __ | Steel | Two Set Screws | 2737T106 |
| 14 | 1/2" | 1.25" | 1/2" | 13/16" | __ | __ | Steel | Two Set Screws | 2737T107 |
| 15 | 1/4" | 1.33" | 1/2" | 57/64" | __ | __ | Steel | Two Set Screws | 2737T108 |
| 15 | 3/8" | 1.33" | 1/2" | 57/64" | __ | __ | Steel | Two Set Screws | 2737T109 |
| 15 | 1/2" | 1.33" | 1/2" | 57/64" | __ | __ | Steel | Two Set Screws | 2737T111 |
| 16 | 1/4" | 1.41" | 1/2" | 31/32" | __ | __ | Steel | Two Set Screws | 2737T112 |
| 16 | 3/8" | 1.41" | 1/2" | 31/32" | __ | __ | Steel | Two Set Screws | 2737T113 |
| 16 | 1/2" | 1.41" | 1/2" | 31/32" | __ | __ | Steel | Two Set Screws | 2737T114 |
| 17 | 1/4" | 1.49" | 1/2" | 1 1/32" | __ | __ | Steel | Two Set Screws | 2737T115 |
| 17 | 3/8" | 1.49" | 1/2" | 1 1/32" | __ | __ | Steel | Two Set Screws | 2737T116 |
| 17 | 1/2" | 1.49" | 1/2" | 1 1/32" | __ | __ | Steel | Two Set Screws | 2737T117 |
| 17 | 5/8" | 1.49" | 1/2" | 1 1/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T118 |
| 18 | 1/4" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 2737T119 |
| 18 | 3/8" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 2737T121 |
| 18 | 1/2" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 2737T122 |
| 18 | 5/8" | 1.57" | 1/2" | 1 1/8" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T123 |
| 18 | 3/4" | 1.57" | 1/2" | 1 1/8" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T124 |
| 19 | 1/4" | 1.65" | 1/2" | 1 7/32" | __ | __ | Steel | Two Set Screws | 2737T125 |
| 19 | 3/8" | 1.65" | 1/2" | 1 7/32" | __ | __ | Steel | Two Set Screws | 2737T126 |
| 19 | 1/2" | 1.65" | 1/2" | 1 7/32" | __ | __ | Steel | Two Set Screws | 2737T127 |
| 19 | 5/8" | 1.65" | 1/2" | 1 7/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T128 |
| 19 | 3/4" | 1.65" | 1/2" | 1 7/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T129 |
| 20 | 1/4" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 2737T131 |
| 20 | 3/8" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 2737T132 |
| 20 | 1/2" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 2737T133 |
| 20 | 5/8" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T134 |
| 20 | 3/4" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T135 |
| 20 | 7/8" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T136 |
| 21 | 1/4" | 1.81" | 5/8" | 1 3/8" | __ | __ | Steel | Two Set Screws | 2737T137 |
| 21 | 3/8" | 1.81" | 5/8" | 1 3/8" | __ | __ | Steel | Two Set Screws | 2737T138 |
| 21 | 1/2" | 1.81" | 5/8" | 1 3/8" | __ | __ | Steel | Two Set Screws | 2737T139 |
| 21 | 5/8" | 1.81" | 5/8" | 1 3/8" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T141 |
| 21 | 3/4" | 1.81" | 5/8" | 1 3/8" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T142 |
| 21 | 7/8" | 1.81" | 5/8" | 1 3/8" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T143 |
| 22 | 1/4" | 1.89" | 5/8" | 1 7/16" | __ | __ | Steel | Two Set Screws | 2737T144 |
| 22 | 3/8" | 1.89" | 5/8" | 1 7/16" | __ | __ | Steel | Two Set Screws | 2737T145 |
| 22 | 1/2" | 1.89" | 5/8" | 1 7/16" | __ | __ | Steel | Two Set Screws | 2737T146 |
| 22 | 5/8" | 1.89" | 5/8" | 1 7/16" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T147 |
| 22 | 3/4" | 1.89" | 5/8" | 1 7/16" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T148 |
| 22 | 7/8" | 1.89" | 5/8" | 1 7/16" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T149 |
| 23 | 1/4" | 1.97" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T151 |
| 23 | 3/8" | 1.97" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T152 |
| 23 | 1/2" | 1.97" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T153 |
| 23 | 5/8" | 1.97" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T154 |
| 23 | 3/4" | 1.97" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T155 |
| 23 | 7/8" | 1.97" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T156 |
| 23 | 1" | 1.97" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T157 |
| 24 | 3/8" | 2.05" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T171 |
| 24 | 1/2" | 2.05" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T172 |
| 24 | 5/8" | 2.05" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T173 |
| 24 | 3/4" | 2.05" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T174 |
| 24 | 7/8" | 2.05" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T175 |
| 24 | 1" | 2.05" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T176 |
| 25 | 3/8" | 2.13" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T181 |
| 25 | 1/2" | 2.13" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T182 |
| 25 | 5/8" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T183 |
| 25 | 3/4" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T184 |
| 25 | 7/8" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T185 |
| 25 | 1" | 2.13" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T186 |
| 26 | 3/8" | 2.21" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T191 |
| 26 | 1/2" | 2.21" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T192 |
| 26 | 5/8" | 2.21" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T193 |
| 26 | 3/4" | 2.21" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T194 |
| 26 | 7/8" | 2.21" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T195 |
| 26 | 1" | 2.21" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T196 |
| 28 | 3/8" | 2.37" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T211 |
| 28 | 1/2" | 2.37" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T212 |
| 28 | 5/8" | 2.37" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T213 |
| 28 | 3/4" | 2.37" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T214 |
| 28 | 7/8" | 2.37" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T215 |
| 28 | 1" | 2.37" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T216 |
| 30 | 3/8" | 2.53" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T221 |
| 30 | 1/2" | 2.53" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T222 |
| 30 | 5/8" | 2.53" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T223 |
| 30 | 3/4" | 2.53" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T224 |
| 30 | 7/8" | 2.53" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T225 |
| 30 | 1" | 2.53" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T226 |
| 32 | 3/8" | 2.69" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T231 |
| 32 | 1/2" | 2.69" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T232 |
| 32 | 5/8" | 2.69" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T233 |
| 32 | 3/4" | 2.69" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T234 |
| 32 | 7/8" | 2.69" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T235 |
| 32 | 1" | 2.69" | 5/8" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T236 |
| 36 | 3/8" | 3.01" | 3/4" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T261 |
| 36 | 1/2" | 3.01" | 3/4" | 1 1/2" | __ | __ | Steel | Two Set Screws | 2737T262 |
| 36 | 5/8" | 3.01" | 3/4" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T263 |
| 36 | 3/4" | 3.01" | 3/4" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T264 |
| 36 | 7/8" | 3.01" | 3/4" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T265 |
| 36 | 1" | 3.01" | 3/4" | 1 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T266 |
| 40 | 1/2" | 3.33" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T281 |
| 40 | 5/8" | 3.33" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T282 |
| 40 | 3/4" | 3.33" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T283 |
| 40 | 7/8" | 3.33" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T284 |
| 40 | 1" | 3.33" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T285 |
| 40 | 1 1/4" | 3.33" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T286 |
| 40 | 1 3/8" | 3.33" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T287 |
| 45 | 1/2" | 3.73" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T311 |
| 45 | 5/8" | 3.73" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T312 |
| 45 | 3/4" | 3.73" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T313 |
| 45 | 7/8" | 3.73" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T314 |
| 45 | 1" | 3.73" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T315 |
| 45 | 1 1/4" | 3.73" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T316 |
| 45 | 1 3/8" | 3.73" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T317 |
| 48 | 1/2" | 3.96" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T321 |
| 48 | 5/8" | 3.96" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T322 |
| 48 | 3/4" | 3.96" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T323 |
| 48 | 7/8" | 3.96" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T324 |
| 48 | 1" | 3.96" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T325 |
| 48 | 1 1/4" | 3.96" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T326 |
| 48 | 1 3/8" | 3.96" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T327 |
| 54 | 1/2" | 4.44" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T331 |
| 54 | 5/8" | 4.44" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T332 |
| 54 | 3/4" | 4.44" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T333 |
| 54 | 7/8" | 4.44" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T334 |
| 54 | 1" | 4.44" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T335 |
| 54 | 1 1/4" | 4.44" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T336 |
| 54 | 1 3/8" | 4.44" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T337 |
| 60 | 1/2" | 4.92" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T341 |
| 60 | 5/8" | 4.92" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T342 |
| 60 | 3/4" | 4.92" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T343 |
| 60 | 7/8" | 4.92" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T344 |
| 60 | 1" | 4.92" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T345 |
| 60 | 1 1/4" | 4.92" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T346 |
| 60 | 1 3/8" | 4.92" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T347 |
| 70 | 1/2" | 5.72" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T351 |
| 70 | 5/8" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T352 |
| 70 | 3/4" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T353 |
| 70 | 7/8" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T354 |
| 70 | 1" | 5.72" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T355 |
| 70 | 1 1/4" | 5.72" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T356 |
| 70 | 1 3/8" | 5.72" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T357 |
| 72 | 1/2" | 5.88" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 2737T361 |
| 72 | 5/8" | 5.88" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T362 |
| 72 | 3/4" | 5.88" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T363 |
| 72 | 7/8" | 5.88" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 2737T364 |
| 72 | 1" | 5.88" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T365 |
| 72 | 1 1/4" | 5.88" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 2737T366 |
| 72 | 1 3/8" | 5.88" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 2737T367 |
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