Simplex Stock Bore B Type Metric Roller Chain Sprockets, 28B-1 Chain Number
MARTIN SPROCKET

Pitch Dia.	Outside Dia.	Number Of Teeth	Length Through Bore	Pitch	Price
157.774 mm	185.396 mm	-	70 mm	44.45 mm	$611.87
171.742 mm	199.364 mm	12	70 mm	44.45 mm	$678.39
185.738 mm	213.36 mm	13	70 mm	44.45 mm	$746.44
199.756 mm	227.379 mm	14	60 mm	44.45 mm	$812.59
227.843 mm	255.466 mm	16	64 mm	44.45 mm	$891.28
241.905 mm	269.528 mm	17	64 mm	44.45 mm	$863.33
255.977 mm	283.6 mm	18	64 mm	44.45 mm	$893.21
270.057 mm	297.68 mm	19	64 mm	44.45 mm	$950.53
284.145 mm	311.767 mm	-	64 mm	44.45 mm	$993.67
298.238 mm	325.86 mm	21	64 mm	44.45 mm	$1,015.96
312.336 mm	339.958 mm	22	64 mm	44.45 mm	$1,041.26
326.438 mm	354.061 mm	23	64 mm	44.45 mm	$1,068.13
354.655 mm	382.277 mm	-	64 mm	44.45 mm	$1,131.09
368.767 mm	396.39 mm	-	64 mm	44.45 mm	$1,089.73
382.883 mm	410.505 mm	27	64 mm	44.45 mm	$1,123.57
397.001 mm	424.623 mm	28	64 mm	44.45 mm	$1,146.93
425.243 mm	452.866 mm	30	64 mm	44.45 mm	$1,187.37
453.492 mm	481.115 mm	32	76 mm	44.45 mm	$1,242.27