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V012024 • © 2024 Portescap. Specifications subject to change without notice.Dimensions in inches [mm]Surgical Motor Solutions[4.75]Ø0.187.4606-64 UNS-2A0.328±0.002[8.33±0.05]Ø0.2500Motor & hall leads: 6.0 [152] min long, 26 AWG stranded0.500±0.008[12.70±0.05]0.129±0.002[3.28±0.05]2.387±.007 [60.63±0.18]+0-0.0003 +0-0.01 [6.35 ] 3X Ø0.500+0-0.002 +0-0.05 [12.70 ]Ø0.1245+0-0.0005 +0-0.01 [3.16 ]Ø0.4685 +0-0.0005 +0-0.01 [11.90 ]0.030±0.002 [0.76±0.05]0.048±0.002 [1.12±0.05] 134°CB0512A4000B0512A40010 10 20 30 40 50 60 012,00010,0008,0006,0004,0002,00016,00014,00018,00005 10 15 20 25 30 35 40 45 50 55 60 65 7050W35W25WContinuousShort time012,0002,0006,0008,0004,00010,00016,00014,000No load speed (rpm)Power supply voltage (V)No load speed for each coilSpeed (rpm)Torque (mNm)Max. continuous operation at 25°CB0512A4 ENT Microdebrider/Shaver Surgical Gearmotor Ø 0.5 inch • Brushless SlottedElectrical Data SymbolB0512A4xxxB0512A4000 B0512A4001 Unit1 Nominal Voltage UN 24 48 Volt2 Optimization Direction - Symmetrical Symmetrical -3 No Load Speed n0 13'385 12'800 rpm4 Typical No Load Current I0 510 248 mA5 Max. Continuous Mechanical Power (@25°C) Pmax 48 50.8 W6 Max. Continuous Current Ics 2.56 1.35 A7 Max. Continuous Torque Tcs 37.8 (5.36) 41.6 (5.9) mNm (oz-in)8 Back EMF Constant kE 1.81 3.75 V/1000 rpm9 Torque Constant kT 15.5 (2.21) 32.2 (4.6) mNm/A (oz-in/A)10 Motor Regulation R/k2 3.434 2.845 103/Nms11 Peak Torque Tpk 445.1 (63) 518.9 (73.5) mNm (oz-in)12 Motor Constant kM 17 (2.41) 18.7 (2.65) mNm/W½ (oz-in/W½)13 Line to Line Resistance RL 0.825 2.95 ohms14 Inductance Phase to Phase L 0.058 0.24 mH15 Mechanical Time Constant τM 3.3 2.74 ms16 Electrical Time Constant τE 0.07 0.081 msGeneral Data17 Gearhead Ratio - 5:1 ratio18 Ambient Working Temperature Range - -30 to +135 (-22 to +275) °C (°F)19 Maximum Winding Temperature - 155 (311) °C (°F)20 Radial Static Force w/o Shaft Support (max) - 17.6 (4) N (lbs)21 Axial Static Force w/o Shaft Support (max) - 5.78 (1.3) 44 (9.9) N (lbs)22 Thermal Resistance Rth 15.9 °C/W23 Thermal Time Constant τw 485 s24 Weight - 54 (1.9) g (oz)25 Rotor Inertia Jm 3.15 (4.46) kg-cm2 10-4 (oz-in-sec2 10-6)26 Hall Sensor Electrical Phasing* - 60 Electrical °27 Autoclave Cycles - 1000+ CyclesWire DescriptionBlue Phase ABrown Phase BViolet Phase CRed 4.5 to 24 VdcYellow Sensor 1Orange Sensor 2White Sensor 3Black GND*Also available without Hall sensors63