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Brushless Slotted DC Mini Motor

ENT Microdebrider (24V)

This size 5 brushless DC slotted 24V mini motor is optimized for ENT microdebrider (a.k.a ENT shaver) applications. Motor torque and speed make this an ideal solution for powered surgical hand tools that are used in minimally invasive surgical procedures particularly surgeries of the ear, nose and throat. Portescap mini motors for surgical power applications are designed for high reliability in autoclave environments.

Motor Highlights

  • Designed for autoclave applications requiring up to 1000 autoclave cycles
  • Optimized for use in powered surgical handtools
  • High torque and high speed design is optimized to remove soft tissue, hard tissue, and bone
  • High speed electric motors allow for cleaner soft tissue cuts and shorter surgery cases
  • Lightweight and low vibration for increased surgeon tactile feel
  • High efficiency for low temperature operation
  • Small size allowing smaller surgical handtool designs and improved ergonomics
  • Withstands high current draw

Customization Available

  • Contact Portescap to see what customization options are available.

Applications

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Specification + Detail
Resources
Metric English 
Winding{%|%}unit B0512N4080
Diameter{%|%}in 0.50
Diameter{%|%}mm 12.7
Nominal Voltage{%|%}Volt 24.0
Optimization (rpm)
Max No-Load Current{%|%}mA 855
No-Load Speed{%|%}rpm 11,829
Resistance - phase to phase{%|%}Ω
Continuous Stall Torque{%|%}mNm 39.5
Continuous Stall Torque{%|%}oz-in 5.60
Continuous Stall Current{%|%}A 2.44
Peak Torque for 1s{%|%}mNm 449.3
Peak Torque for 1s{%|%}oz-in 63.6
Peak Current{%|%}A 26.4
Stall Torque (oz-in)
Stall Torque (mNm)
Efficiency (%)
Speeds up to (rpm)
Torque up to (oz-in)
Torque up to (mNm)
Current up to (thermal limits)
Back-EMF Constant{%|%}V/1000 rpm 1.98
Torque Constant{%|%}mNm/A 17.00
Torque Constant{%|%}oz-in/A 2.40
Motor Regulation R/k²{%|%}10³/Nms 2.5
Motor Constant{%|%}mNm/W½ 17.8
Line to Line resistance at connectors (Ω)
Inductance - phase to phase{%|%}mH @1Khz 0.062
Thermal Resistance (winding to ambient){%|%}°C/W 15.9
Thermal Time Constant{%|%}s 490
Friction Torque (onz-in)
Friction Torque (mNm)
Rotor Inductance (mH)
Mechanical Time Constant{%|%}ms 3.03
Electrical time constant{%|%}ms 0.07
Max motor speed (rpm)
Ambient working temperature range (C)
Ambient working temperature range (F)
Ambient storage temperature range (C)
Ambient storage temperature range (F)
Ball bearings preload (N)
Axial static force without shaft support (N)
Operating Temperature Range (C)
Operating Temperature Range (F)
Rotor Inertia{%|%}kgm²10{%SUP%}-8{%/SUP%} 3.15
Rotor Inertia{%|%}oz-in-sec²10{%SUP%}-6{%/SUP%} 4.46
Max Winding Temperature{%|%}°C
Max winding temperature {%|%}°C 155
Max Winding Temperature{%|%}°F
Max winding temperature {%|%}°F 311
Shaft Load Max Axial{%|%}lb 9.9
Shaft Load Max Axial{%|%}N 44.0
Shaft Load Max Radial{%|%}lb 4.0
Shaft Load Max Radial{%|%}N 17.6
Weight{%|%}g 48.0
Weight{%|%}oz 1.70
Typical Housing Material
Hall Sensor Elecrical Phasing (degree)
Absolute accuracy 2 ph. On, Full step mode (degree)
Bearing Type
Detent Torque, Max (mNm)
Detent Torque, Max (oz-in)
Dielectric Withstanding Voltage (VAC)
Holding Torque, MIN (mNm)
Holding Torque, MIN (oz-in)
Inductance per Phase, typ (mH)
Insulation Resistance at 500 VDC (Mohms)
Leadwire
Maximum Coil Temperature (C)
Maximum Coil Temperature (F)
Operating Voltage (VDC)
Rated Current per Phase, 1 Phase ON (A)
Resistance per Phase, ± 10%{%|%}Ohms 0.91
Max Radial Shaft Load (N)
Max Radial Shaft Load (oz)
Max Axial Shaft Load (N)
Max Axial Shaft Load (oz)
Steps per Revolution
Back EMF Amplitude (V/ksteps/s)
Nominal Phase Current (1 ph. On) (A)
Nominal Phase Current (2 ph. On) (A)
Angular Acceleration (nominal current)
Axial Shaft Play (µm)
Holding Torque Typical (mNm)
Holding Torque Typical (oz-in)
Holding Torque, 1.5x nominal current (mNm)
Holding Torque, 1.5x nominal current (oz-in)
Natural Resonance Frequency @nominal current (Hz)
Power rate (nominal current) (kW/s)
Radial Shaft Play (µm)
Max. Force* @ .001" (0.0254 mm) / Step (N)
Max. Force* @ .001" (0.0254 mm) / Step (oz)
Max. Force* @ .002" (0.0508 mm) / Step (N)
Max. Force* @ .002" (0.0508 mm) / Step (oz)
Max. Force* @ .004"(0.1016 mm) / Step (N)
Max. Force* @ .004"(0.1016 mm) / Step (oz)
Stroke Length, Typ{%|%}mm
Stroke Length, Typ{%|%}in
Min. Holding Force (Unenergized) @ .0005" (0.0127 mm) / Step{%|%}N
Min. Holding Force (Unenergized) @ .0005" (0.0127 mm) / Step{%|%}oz
Min. Holding Force @ 0.001" (0.0254 mm) / Step (Un-energised) (N)
Min. Holding Force @ 0.001" (0.0254 mm) / Step (Un-energised) (oz)
Min. Holding Force @ 0.002" (0.0508 mm) / Step (Un-energised) (N)
Min. Holding Force @ 0.002" (0.0508 mm) / Step (Un-energised) (oz)
Min. Holding Force (Unenergized) @ 0.003" (0.0762 mm) / Step (Un-energized){%|%}N
Min. Holding Force (Unenergized) @ 0.003" (0.0762 mm) / Step (Un-energized){%|%}oz
Min. Holding Force @ 0.004" (0.1016 mm) / Step (Un-energised) (N)
Min. Holding Force @ 0.004" (0.1016 mm) / Step (Un-energised) (oz)
Min. Holding Force @ rated current @ .0005" (0.0127 mm) / Step{%|%}N
Min. Holding Force @ rated current @ .0005" (0.0127 mm) / Step{%|%}oz
Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%|%}N
Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%|%}oz
Min. Holding Force @ rated current @ .002" (0.058 mm) / Step{%|%}N
Min. Holding Force @ rated current @ .002" (0.058 mm) / Step{%|%}oz
Min. Holding Force @ rated current @ .003" (0.0762 mm) / Step{%|%}N
Min. Holding Force @ rated current @ .003" (0.0762 mm) / Step{%|%}oz
Min. Holding Force @ rated current @ .004" (0.1016 mm) / Step{%|%}N
Min. Holding Force @ rated current @ .004" (0.1016 mm) / Step{%|%}oz
Number of lines available
Output signal
Supply Current - maxium (mA)
Supply Current - stand-by (μA)
Supply Current - typical (mA)
Supply Voltage (V)
Direction of rotation ( = / ≠)
Max. Recommended Input Speed (rpm)
Number of gear stages
Number of lines available
Type of encoder
Length{%|%}in 2.39
Length{%|%}mm 60.7
Linear Travel Accuracy
Input Power (W)
Stepper Type
Document Technology Document Type Language File Type
ENT Microdebrider 24v B0512N4080 specification sheet Brushless DC Specification Page  
ENT Microdebrider 24v B0512N4080 drawing Brushless DC DXF Drawing  
B0512N4080 3D drawing Brushless DC 3D