Brushless DC Motor

NEMA 17 / 42 mm Brushless DC Motor

42 mm brushless DC motor available in circular-flange (75 mm body, 2 pole-pair) and square-flange (50/63/75 mm body, 5 pole-pair) configurations, with Star-wound windings and Hall sensor feedback as standard, delivering strong torque density and dynamic performance in robotics, laboratory automation, medical devices, AGV/AMR systems, and industrial automation.

Available in five standard configurations — 42ZWC75L-1, 42ZWC75L-2, 42ZWS50X-1, 42ZWS63X-1, and 42ZWS75X-1 — with rated power up to 209.4 W, rated torque up to 0.2 N·m, and no-load speed up to 12,000 RPM, with optional planetary gearbox and incremental encoder configurations available for precision motion applications.

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42 mm brushless DC motor

Motor Characteristics

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Specification Unit 42ZWC75L-1 42ZWC75L-2 42ZWS50X-1 42ZWS63X-1 42ZWS75X-1
Body Length (LT)mm73±0.550±163±175±1
Pole Pairs-25
Terminal Resistance, Phase-PhaseΩ0.240.192.4821.2610.987
Terminal Inductance, Phase-PhasemH0.150.121.0620.5860.434
Winding Connection Method-Star Shape
Insulation Class-B
Duty Type-S2
Feedback Method-Hall Sensors
Commutation Angle-120°
Insulation Strength-500VAC/1KHz/1mA/1s
Insulation Resistance-100 MOhm 20C
Weightg425.8260380500
Rated VoltageV4824
Rated PowerW209.48319.639.358.1
Rated TorqueN·m0.20.080.06250.1250.185
Rated SpeedRPM100003000
Rated CurrentA5.54.31.22.43.6
No Load SpeedRPM120004000
No Load CurrentA0.860.70.150.30.45
Motor Efficiency%807277.676
NoisedB<50
Enclosure-Ambient Thermal ResistanceK/W0.0850.250.750.380.25
Ambient Temperature℃2531.3
Maximum Winding Temperature℃7568.5
Torque ConstantN·m/A0.0360.0190.0520.051
Back-EMF Constant / Effective ValueV/Krpm3.771.995.44
Peak TorqueN·m0.60.240.18750.3750.555
Peak CurrentA16.512.93.67.210.8
Rotor InertiaKg·cm²0.0840.050.10.15

Dimensional Drawing

42ZWC75L circular flange dimensional drawing
42ZWS**X square flange dimensional drawing

*LT: refer to the Motor Characteristics table above.

Torque Performance Curves

42ZWC75L-1 torque performance curve
42ZWC75L-2 torque performance curve
42ZWS50X-1 torque performance curve
42ZWS63X-1 torque performance curve
42ZWS75X-1 torque performance curve

Lead Wire Configuration

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Lead-Out Type Lead-Out Color Function
UL3265 AWG26YellowHall U (Hu)
UL3265 AWG26GreenHall V (Hv)
UL3265 AWG26BlueHall W (Hw)
UL3265 AWG26RedHall Power Supply Positive (Vcc)
UL3265 AWG26BlackHall Power Supply Negative (GND)
UL3265 AWG22YellowU Phase
UL3265 AWG22GreenV Phase
UL3265 AWG22BlueW Phase
42 mm BLDC lead wire diagram

Customization Options

⚙

Gearbox Integration

Precision planetary gearbox options can help increase output torque or reduce speed — see all available sizes below.

◎

Encoder Feedback

Add incremental encoder feedback for improved speed control, positioning feedback, and closed-loop performance.

↔

Shaft Modifications

Customize shaft length, flats, diameter, or mounting features to support compact mechanical integration.

⌁

Lead Wire & Connector Options

Modify wire length, routing, connectors, or cable assemblies to simplify installation and reduce assembly time.

Precision Planetary Gearbox

The 42 mm Brushless DC motor ships standard with the 42 mm gearbox below. DINGS' offers 10 precision planetary gearbox sizes from 6 mm to 42 mm — browse any size for reference.

6 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3
Gear RatioX : 13.91557
Max. backlash°1.82.02.2
Max. continuous output powerW0.650.40.2
Max. peak output powerW0.80.50.25
Max. continuous input speedrpm20000
Max. peak input speedrpm25000
Max. continuous torqueN·m0.0020.0050.01
Max. peak torqueN·m0.0050.010.02
Max. efficiency%887768
Weightg1.622.4
Gearbox length Lmm4.77.29.7
8 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3
Gear RatioX : 141664
Max. backlash°1.82.02.2
Max. continuous output powerW0.840.520.4
Max. peak output powerW1.050.650.5
Max. continuous input speedrpm14000
Max. peak input speedrpm20000
Max. continuous torqueN·m0.010.020.06
Max. peak torqueN·m0.0150.030.09
Max. efficiency%908172
Weightg2.63.23.8
Gearbox length Lmm5.58.110.7
10 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 14.251877326
Max. backlash°1.51.82.02.2
Max. continuous output powerW1.61.21.00.4
Max. peak output powerW21.51.30.5
Max. continuous input speedrpm14000
Max. peak input speedrpm18000
Max. continuous torqueN·m0.010.030.100.15
Max. peak torqueN·m0.020.050.150.2
Max. efficiency%90817365
Weightg6.87.37.88.3
Gearbox length Lmm10.113.617.120.6
12 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 14.318.479337
Max. backlash°1.21.51.82.1
Max. continuous output powerW2.010.50.25
Max. peak output powerW2.51.250.650.3
Max. continuous input speedrpm16000
Max. peak input speedrpm20000
Max. continuous torqueN·m0.080.110.140.17
Max. peak torqueN·m0.10.140.180.21
Max. efficiency%90807565
Weightg9121518
Gearbox length Lmm11.315.118.922.7
14 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 14.318.479337
Max. backlash°1.11.31.451.7
Max. continuous output powerW4.02.01.00.4
Max. peak output powerW5.02.51.250.5
Max. continuous input speedrpm1400016000
Max. peak input speedrpm1800020000
Max. continuous torqueN·m0.160.20.250.3
Max. peak torqueN·m0.20.250.310.38
Max. efficiency%90807565
Weightg11151923
Gearbox length Lmm11.816.120.424.7
16 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 13.9, 5.316, 21, 2862, 83, 111, 150243, 326, 439, 590, 794
Max. backlash°1.01.21.31.4
Max. continuous output powerW6.53.21.60.6
Max. peak output powerW8.04.02.00.75
Max. continuous input speedrpm1200014000
Max. peak input speedrpm1500018000
Max. continuous torqueN·m0.20.250.350.45
Max. peak torqueN·m0.250.350.450.55
Max. efficiency%90807565
Weightg25313742
Gearbox length Lmm18.725.530.235
22 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 13.9, 5.316, 21, 2862, 83, 111, 150243, 326, 439, 590, 794
Max. backlash°0.851.051.21.35
Max. continuous output powerW24126.01.6
Max. peak output powerW30157.52.0
Max. continuous input speedrpm800010000
Max. peak input speedrpm1000012500
Max. continuous torqueN·m0.50.71.21.5
Max. peak torqueN·m0.60.91.51.9
Max. efficiency%90817466
Weightg598397112
Gearbox length Lmm22.33339.646.3
28 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 13.9, 5.316, 21, 2862, 83, 111, 150243, 326, 439, 590, 794
Max. backlash°0.50.60.70.75
Max. continuous output powerW10050258.0
Max. peak output powerW125623110
Max. continuous input speedrpm60007000
Max. peak input speedrpm75008750
Max. continuous torqueN·m1.252.905.0
Max. peak torqueN·m1.63.66.3
Max. efficiency%90817265
Weightg103150174198
Gearbox length Lmm24.236.943.550.2
36 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 13.9, 5.316, 21, 2862, 83, 111, 150243, 326, 439, 590, 794
Max. backlash°0.50.60.70.8
Max. continuous output powerW185904515
Max. peak output powerW2301156019
Max. continuous input speedrpm6000
Max. peak input speedrpm7500
Max. continuous torqueN·m2.35.49.3
Max. peak torqueN·m2.96.811.6
Max. efficiency%90807265
Weightg156238277315
Gearbox length Lmm3044.751.358
42 mm size planetary gearbox dimensional drawing
SpecificationUnitStage 1Stage 2Stage 3Stage 4
Gear RatioX : 13.9, 5.316, 21, 2862, 83, 111, 150243, 326, 439, 590, 794
Max. backlash°0.30.40.50.6
Max. continuous output powerW4802008520
Max. peak output powerW60025010625
Max. continuous input speedrpm6000
Max. peak input speedrpm7500
Max. continuous torqueN·m3.07.515
Max. peak torqueN·m4.511.322.5
Max. efficiency%90817264
Weightg252405476544
Gearbox length Lmm36.154.963.672.4

Gear ratios shown above reflect standard stock configurations for each size. Additional gear ratios and stage combinations are available upon request — contact our engineering team to configure a custom reduction for your application.

Request Precision Planetary Gearbox Quote →

Downloads

Size 42 mm
↓ General Catalog

42ZWC75L-1

↓ 2D Drawing PDF ↓ 3D Drawing STP

42ZWC75L-2

↓ 2D Drawing PDF ↓ 3D Drawing STP

42ZWS50X-1

↓ 2D Drawing PDF ↓ 3D Drawing STP

42ZWS63X-1

↓ 2D Drawing PDF ↓ 3D Drawing STP

42ZWS75X-1

↓ 2D Drawing PDF ↓ 3D Drawing STP

Part Number Builder

42 ZWC/ZWS 75/50/63 L/X - 1/2
42

42 mm motor diameter

ZWC / ZWS

Brushless DC motor series — circular (ZWC) or square (ZWS) flange

75 / 50 / 63

Body length designation (mm)

L / X

Motor configuration designation

-1 / -2

Version identifier

Hall

Hall sensor feedback is standard

24 / 48 V

Rated voltage (configuration-dependent)

Custom

Winding, shaft, cable, connector, gearbox, and encoder options may be customized.

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Need Help Selecting the Right 42 mm BLDC Motor?

Whether you need a standard motor, integrated gearbox, encoder feedback, or a custom winding, our engineering team can help you select the right solution for your application.

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