Ø 20.0 24.9 mm HC213LG-011 Characteristics: High Power DC motor Specifications: Dimensions Shaft Diameter Input Voltage No Load Speed No Load Current Nominal Speed Nominal Torque Nominal Current Stall Torque Stall Current Maximum Output Power Maximum Efficiency Torque at Maximum Efficiency Speed at Maximum Efficiency Life (typical) Weight Operation Temperature Storage Temperature Electrical Connection : Ø 24.0 X 30.5 mm : Ø 2.000 mm : 21.0 V DC : 30000 rpm : 0.30 A : 26500 rpm : 4.0.