BlackStar Sprocket Catalog (PDF) - McGuire Bearing Company

40 Sprockets1/2” PitchSingle - Type BSingle - Type ANo.ofTeethCatalogNumberOutsideDiameterDiameters Bore HubPitchDiameter Minimum Maximum DiameterLengthThru BoreApprox.Weight(lbs.)CatalogNumberStockBoreApprox.Weight(lbs.).284Nominal891011H40B8H40B9H40B10H40B111.501.671.842.001.5071.4621.6181.7751/21/21/21/21/29/163/47/831/32 *1 1/16 *1 1/4 *1 3/8 *7/87/87/87/80.180.200.270.351213141516171819H40B12H40B13H40B14H40B15H40B16H40B17H40B18H40B192.172.332.492.652.812.983.143.301.9322.0892.2472.4052.5632.7212.8793.0381/21/21/21/25/85/85/85/811 1/161 1/81 1/41 3/81 7/161 1/21 3/41 9/16 *1 9/161 11/161 13/1622 1/82 5/162 1/27/87/87/87/87/81110.450.500.590.700.791.041.221.43H40A12H40A13H40A14H40A15H40A16H40A17H40A18H40A191/21/21/25/85/85/85/85/80.180.220.260.300.340.360.440.46OutsideDiameter20212223H40B20H40B21H40B22H40B233.463.623.783.943.1963.3553.5133.6725/85/85/85/81 7/81 7/81 7/822 5/82 3/42 7/8311111.561.731.962.13H40A20H40A21H40A22H40A235/85/85/85/80.560.580.660.722425262728293031H40B24H40B25H40B26H40B27H40B28H40B29H40B3040B314.104.264.424.584.744.905.065.223.8313.9894.1484.3074.4654.8984.7835.2175/85/85/85/85/85/85/85/82 1/42 1/42 1/42 1/42 1/42 1/42 1/42 1/43 1/43 1/43 1/43 1/43 1/43 1/43 1/43 1/4111111112.412.542.582.662.732.802.983.10H40A24H40A25H40A26H40A27H40A28H40A29H40A3040A315/85/85/85/85/819/3219/3219/320.820.880.940.981.101.221.261.40TYPE A323334353637383940B3240B3340B3440B3540B3640B3740B3840B395.385.545.705.866.026.186.336.495.3765.5365.6965.8566.0156.1746.3346.4945/85/85/85/85/85/85/85/82 1/42 1/42 1/42 1/42 1/42 1/42 1/42 1/43 1/43 1/43 1/43 1/43 1/43 1/43 1/43 1/4111111113.163.223.303.463.583.623.703.7640A3240A3340A3440A3540A3640A3740A3840A3919/3219/3219/3219/3219/3219/3219/3219/321.481.561.641.701.841.922.002.02.284Nominal4041424340B4040B4140B4240B436.656.816.977.136.6536.8126.9727.1323/43/43/43/42 3/82 3/82 3/82 3/83 1/23 1/23 1/23 1/21 1/81 1/81 1/81 1/84.694.764.825.1240A4040A4140A4240A4323/3223/3223/3223/322.222.422.502.804445464740B4440B4540B4640B477.297.457.617.777.2917.4507.6097.7693/43/43/43/42 3/82 3/82 3/82 3/83 1/23 1/23 1/23 1/21 1/81 1/81 1/81 1/85.155.305.575.6440A4440A4540A4640A4723/3223/3223/3223/322.853.153.263.32OutsideDiameterHubDiameter4849505140B4840B4940B5040B517.938.098.258.417.9288.0888.2488.4063/43/43/43/42 3/82 3/82 3/82 3/83 1/23 1/23 1/23 1/21 1/81 1/81 1/81 1/85.845.905.966.0840A4840A4940A5040A5123/3223/3223/3223/323.223.443.623.945253545540B5240B5340B5440B558.578.738.899.048.5668.7258.8849.0443/43/43/43/42 3/82 3/82 3/82 3/83 1/23 1/23 1/23 1/21 1/81 1/81 1/81 1/86.286.336.426.4640A5240A5340A5440A5523/3223/3223/3223/324.084.244.444.54565758596070728040B5640B5740B5840B5940B6040B7040B7240B809.209.369.529.689.8411.4311.7513.039.2049.3629.5229.6289.84011.43311.46312.7363/43/43/43/43/43/43/43/42 3/82 3/82 3/82 3/82 3/82 3/42 3/42 3/43 1/23 1/23 1/23 1/23 1/24441 1/81 1/81 1/81 1/81 1/81 1/41 1/41 1/46.897.027.367.457.8611.0011.5013.4040A5640A5740A5840A5940A6040A7040A7240A8023/3223/3223/3223/3223/3223/3223/3223/324.845.005.125.305.487.247.7410.20LengthThru BoreTYPE B849611240B8440B9640B11213.6615.5718.1213.37215.28217.8273/4112 3/42 3/42 3/44441 1/41 1/41 1/414.0417.5622.5640A8440A9640A11223/3215/1615/1610.0712.1520.00*Has a recessed groove in the hub for chain clearance.Maximum bores shown will accommodate a standard keyseat and a setscrew over the keyseat. Slightly larger bores are possible with nokeyseat, a shallow keyseat, or a setscrew at an angle to the keyseat.Sprockets with “H” prefix have hardened teeth.All dimensions in inches.14Superior Materials Make Superior Products