chain-dat

chain gear Sprocket

Parameter	Description	Unit / Example
Pitch (p)	Distance between adjacent roller centers	mm (e.g., 12.7, 15.875)
Roller Diameter (d₁)	Roller outer diameter	mm
Inner Width (b₁)	Inner width between chain plates (sprocket tooth fit)	mm
Chain Length	Total number of links × pitch	mm
Plate Thickness	Determines load capacity	mm
Tensile Strength / Rated Load	Maximum allowable tension the chain can carry	N or kN
Type / Series	Standard or series (ANSI, ISO, DIN, light/medium/heavy)	e.g., ANSI 40, DIN 08B-1

⚠️ Pitch is the most critical parameter. The chain and sprocket must have the same pitch to mesh correctly.

Parameter	Description	Unit / Example
Number of Teeth (z)	Sprocket tooth count; determines gear ratio	10–120 teeth
Pitch (p)	Must match the chain pitch	mm
Tooth Profile Standard	Defines the tooth shape for proper engagement	ANSI, ISO, DIN
Outside Diameter (OD)	Useful for layout and clearance calculations	mm
Mounting Bore / Pin Hole Diameter	Sprocket mounting for shaft or bolts	mm
Thickness / Tooth Width	Must be compatible with chain inner width	mm
Material / Strength	Determines wear resistance and load capacity	Steel, cast iron, aluminum alloy

⚠️ Tooth count and sprocket diameter set the drive ratio but do not affect mesh compatibility as long as the pitch is the same.

Pitch match: The chain pitch must match the sprocket pitch exactly.
Inner width: Sprocket tooth width must be less than or equal to the chain inner width.
Profile standard: Chain and sprocket standards (ANSI, ISO, etc.) must match to avoid poor engagement and premature wear.
Minimum sprocket tooth count: Too few teeth increases bending fatigue on the chain; typically choose ≥ 12 teeth when possible.
Mounting alignment: Shaft diameter, keyway, and bolt pattern must match the sprocket mounting method.