The differences between sprockets 06B, 08B, 10A and 12A are mainly reflected in the following aspects:
1.Different pitch
06B: The pitch is 9.525mm.
08B: The pitch is 12.7mm.
10A: The pitch is 15.875mm.
12A: The pitch is 19.05mm.
2.Different roller diameters
06B: The diameter of the roller is 6.35mm.
08B: The roller diameter is 8.51mm.
10A: The roller diameter is 10.16mm.
12A: The roller diameter is 11.91 mm..
3.Different sources and standards
06B, 08B: It belongs to series B and comes from European standards. At first, its size was adopted as British standard, and later became European standard (BS/ISO), which is suitable for medium and small power mechanical transmission.
10A, 12A: They belong to series A and are derived from American standards. They are equivalent to the series A of the roller chain international standard ISO606-82 and the roller chain standard ANSI B29.1-75.
5.Tooth width and other dimensions are different.
06B: The width of single row of teeth is 5.3mm, and the width of multiple rows of teeth is 5.2mm..
08B: The width of single row of teeth is 7.2mm, and the width of multiple rows of teeth is 7mm.
10A: The width of single row of teeth is 8.7mm, and the width of multiple rows of teeth is 8.4mm..
12A: The width of single row of teeth is 11.6mm, and that of multiple rows of teeth is 11.3mm..
6.Different bearing capacity
Generally, the greater the pitch, the higher the bearing capacity of sprocket and chain. Under the same material and manufacturing process, the bearing capacity of 12A is greater than 10A, while that of 08B is greater than 06B. Besides, the specifications of B-series sprocket are higher than those of A-series products of the same gear except that the specification of 12B is lower than that of A-series, so the bearing capacity of 08B is generally higher than that of 08A.
7.Packing: 1pc