1240-Series Sprockets

1240 series engineer class sprocket is used for a wide verity of chain sizes. These sizes include 1240, ROA1242, 1244, R1248, ROA124, SS124, IS-4110, IS-4106, LXS1242 and 1241 size chains. These sprockets are typically supplied as cast material but we can also supply them as steel for longer operation. The below chart shows the standard tooth counts as well as dimensions for each size.

Cast 1240-Series Sprockets

Tooth Face at Pitch Line: 1.750" - Roller Diameter: 1.750"

Sprocket SizeTooth CountPitch DiameterStyleHub DiameterLength Thru BoreMaximum BoreWeight (LBS)
1240C668.13"C4.00"4.00"2.31"30.0 LBS
1240C77 13.83"C 5.25"4.75"3.25"39.0 LBS
1240C8810.82"C6.50"5.00"4.06"52.0 LBS
1240C9911.88"C6.50" 5.00"4.06" 61.0 LBS
1240C101013.15"C6.50"5.00" 4.06"69.0 LBS
1240C111114.42"C6.50"5.00"4.06"78.0 LBS
1240C121215.70"C7.00" 6.00"4.56"96.0 LBS
1240C131316.98"C7.00"6.00"4.56"102.0 LBS
1240C141418.26"C7.00"6.00" 4.56"112.0 LBS
1240C151519.54"C7.00" 6.00"4.56"122.0 LBS
1240C161620.82"C8.00"6.25"5.31"140.0 LBS
1240C171722.11"C8.00"6.25"5.31"142.0 LBS
1240C1818 23.40"C8.00"6.25"5.31"161.0 LBS
1240C191924.68"C8.00"6.25"5.31" 175.0 LBS
1240C212127.26"C8.00"6.25" 5.31"210.0 LBS
1240C222228.55"C8.00"6.25"5.31"218.0 LBS
1240C282836.29"C9.00"6.25" 6.06"310.0 LBS
1240C292937.58"C9.00"6.75"6.06"330.0 LBS
1240C303038.87"C10.00"6.75"7.13"346.0 LBS
1240C323241.45"C10.00"6.75"7.13"378.0 LBS
1240C343444.03"C10.00"6.75"7.13"402.0 LBS


We aslo offer a full range of both precision roller chain and engineered.

Applications are varied and range from conveyor, elevator transfer to broad general industrial power transmission specialty applications with attachments and/or special materials are also available.

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We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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