Ratio = Driven teeth ÷ Driver teeth
Gear Ratio
3.00 : 1
Balanced — stock baseline for most general-purpose drives
Speed ←——————— Balance ———————→ Torque
Output RPM = Input RPM × (Driver teeth ÷ Driven teeth) | Chain speed (ft/min) = Driver teeth × Pitch × RPM ÷ 12
Output RPM
875
Chain Speed (ft/min)
1,385
⚠ Chain speed 1,385 ft/min exceeds the 1,300 ft/min recommended limit for #40 chain under continuous lubrication. Consider a larger chain pitch or a lower ratio.
L (links) = 2C/p + (N₂+N₁)/2 + (N₂−N₁)² ÷ (4π²·C/p) — ANSI B29.1 / ISO 606
Chain Links
94
Rounded to nearest even
Chain Length
47.000″
ANSI B29.1 recommended center distance: 30–50× pitch. Order 2–3% extra length for tensioner adjustment.