#40 Chain Drive Sprocket 10-32Tooth Bore 10-40mm Pitch 1/2" 12.7mm For 08B Chain

Heat-treated to HRC28-32 hardness, it balances toughness/rigidity. Step setscrew hole (M6/M8 thread) prevents axial slippage. Pitch：12.7mm. ▸ AS/RS systems: -20℃~120℃ operational range. Model:08B #40.

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