Page 128 - Demo

V012024 • © 2024 Portescap. Specifications subject to change without notice.Dimensions in inches [mm]Brush DC MotorsMotor shaft rotates CW when seen from motor front face when +ve and -ve supply is given to respective terminals.Electrical Data Symbol 28LT12 •••• .49 Unit 219 416E1 Nominal Voltage V 18 32 Volt2 No-Load Speed n0 7,860 7,345 rpm3 No-Load Current I0 65.0 35.0 mA4 Terminal Resistance R 6.2 19.9 Ω5 Output Power P2max. 19.0 20.0 W6 Stall Torque mNm 63 (8.93) 65 (9.21) mNm (oz-in)7 Efficiency hmax. 72 73 %8 Max Continuous Speed ne max. 10,000 10,000 rpm9 Max Continuous Torque Me max. 23 (3.4) 24 (3.4) mNm (oz-in)10 Max Continuous Current Ie max. 1.13 0.63 A11 Back-EMF Constant kE 2.24 4.26 mV/rpm12 Torque Constant kM 21.40 40.70 mNm/A13 Motor Regulation R/k2 13.0 12.0 103/Nms14 Friction Torque TF 1.39 (0.2) 1.42 (0.21) mNm (oz-in)15 Rotor Inductance L 0.50 2.40 mH16 Mechanical Time Constant τm 13.9 21.4 ms17 Rotor Inertia J 10.70 17.80 g-cm2General Data18 Thermal Resistance (rotor/body) Rth1/Rth2 5/12 °C/W19 Thermal Time Constant (rotor/stator) tW1/tW2 27/760 S20 Operating Temperature Range: motor -30°C to 85°C (-22°F to 185°F) °C (°F)rotor 100°C (212°F) °C (°F)21 Shaft Load Max.: With sleeve bearings(5 mm from bearing) -radial 6.0 (21.6) N (oz)-axial 250 (899.2) N (oz)22 Shaft Play: -radial <0.018 (0.0007) mm (inch)-axial 0.15 (0.0059) mm (inch)23 Weight g 135 (4.77) g (oz)24 Commutation Segment - 9 segment28LT12 Ø 28 mm • Graphite-Copper commutation • 24 mNmExecution TableGearbox Single Shaft Double Shaft for E9R22 164 319R32 49 316M2x3.6 max.7.88.56.712.5(11)1041.26x60°Ø17Ø212Ø25.95Ø25.8Ø28 0-0.1Ø10 0-0.015Ø3-0.006-0.009321.5n (rpm)M (mNm)10000800060004000200000 24 48 73 97 No Load Speed vs. TorqueMax. Recommended SpeedMax. Continuous Output Power 21WContinuous working rangeTemporary working range128