Gear box data: 
Reduction ratio: 1/3.6~1/3439 
Rated torque at 12V: 5.18~120gf. Cm 
Rated speed at 12V: 1.2~750rmin 
Rated torque at 24V: 5.18~120kgf. Cm 
Rated speed at 24V: 0.8~750 

Motor data: 
Rated votage: 12, 24V 
Rated torque: 1800, 2100g. Cm 
Rated speed: 3320, 3250rpm 
Rated current: ≤ 5350, ≤ 9400mA 
No Load speed: 4000rpm 
No Load current: ≤ 700, ≤ 1200mA 
Load output power: 60, 68W 
Weight: 1300g