How to calculate chain length?

L_p = 2C_p + Z1/2 + Z2/2 + (Z2 - Z1)^2 / (4π² C_p) links (rounded to even).

Minimum sprocket teeth?

17–19 for low speed, up to 23–25 for high speed to reduce wear.

1.0–1.2 smooth, 1.3–1.5 moderate shock, 1.5–2.0 heavy shock.

AutoEngCalc - Engineering Calculators

Design roller chain drives: calculate pitch, sprocket teeth, chain length, center distance and power rating from power, speed and ratio.

Chain Length

92 Links

For 10 kW, ratio 3:1, 600mm center

Featured: ANSI/ISO Standard, Power Rating, Chain Length

Power P (kW)

Driver RPM n₁

Speed Ratio i (N₂/N₁)

Center Distance C (mm) ≈ 30–50 p

Service Factor K_s

Pinion Teeth Z₁ (min 17)

ANSI/ISO Roller Chain Standard

Standard method using power rating tables (approximated).

Design Power = P × K_s
Select chain with rating > Design Power

Enter parameters and click Calculate

Positive drive, no slip, high efficiency.

Minimum 17–19 teeth for long life.

Accounts for shock and duty cycle.

Footer - AutoEngCalc