Frameless Motor 7021

$329.00

48V | 1.25-4Nm | 2000rpm | 260W

  • This frameless brushless servo motor features ultra-high torque density.
  • Rapid dynamic response and precise control.
  • Low torque ripple.
  • Low heat generation and better heat dissipation.
  • High efficiency, low noise & stable operation.
  • Adaptable to harsh environments.
  • Certified by CE, with a 1-year warranty.
  • Supports small batch prototype orders, better prices for large orders.
  • Customizable.
  • Quick Lead time.
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SKU: FM7021 Category:

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Performance Data

Rated Voltage (V)48Rotor Inertia (kgcm2)0.3700
Rated Torque (Nm)1.25Rated Copper Loss at 20℃ (W)23.9
Rated Speed (rpm)2,000Terminal Resistance (mΩ)651
Rated Power (W)260Terminal Inductance (mH)0.609
Rated Current (Arms)4.95Torque Ripple @ Rated Current2.24%
Peak Torque (Nm)4.00Torque Ripple @ Peak Current2.21%
Max Speed (rpm)2,200Max Efficiency (%)90
Peak Current (Arms)16.62Number of Pole Pairs10
Torque Constant (Nm/Arms)0.249Torque to Weight Ratio (Nm/Kg)12.5
Back EMF Constant (Vrms/rpm)0.0150Weight (g)320
Motor Constant (Nm/√W)0.2330Insulation ClassH
Data may change with product updates.

Mounting Dimension

frameless motor size chart
Stator Outer Diameter D/(mm)70.0
Rotor Inner Diameter d/(mm)42.0
Rotor Length I/(mm)20.7
Stator Lam Length L’/(mm)19.0
Stator Length L/(mm)28.0
PCB Diameter G/(mm)66.0
Winding Head Diameter g/(mm)64.0

Torque, Speed & Efficiency Diagram

frameless brushless servo motor torque speed efficiency diagram 7021

More Frameless Brushless Servo Motors for Selection

Performance data

Our motors are compatible with the following voltages: 12V, 24V, 36V, 48V. If you have specific requirements or need additional data, please feel free to contact us.

ModelFM 2506FM 2510FM 3808FM 3816FM 5010FM 5016FM 7013FM 7021FM 8507FM 8516FM 8525FM 8527FM 11527BOT FM 11513
Power (W)705295205195183235260405420415425750272
Rated Voltage (V)2424244848484848484848484848
Rated Torque (Nm)0.0320.0480.100.230.300.500.671.250.441.442.332.675.502.60
Peak Torque (Nm)0.1000.2000.400.761.001.402.184.001.204.557.408.4512.5021.66
Rated Speed (rpm)20,65010,3009,0008,5006,2003,5003,4002,0009,0002,8001,7001,5001,3001,000
Motor Constant (Nm/√W)0.0140.0200.0360.0600.0840.0980.1520.2330.1100.2800.4430.4800.7600.555
Rotor Inertia (kgcm2)0.00170.00260.01100.0230.0620.1000.2310.3700.3280.7241.161.254.321.96
Torque Ripple @ Rated Current2.45%2.93%4.62%4.26%3.17%3.35%2.43%2.24%4.76%3.26%3.14%2.83%2.88%3.30%
Torque Ripple @ Peak Current1.74%2.01%1.78%1.78%2.16%2.58%2.40%2.21%3.06%2.59%2.64%2.64%2.24%2.41%
Max Efficiency (%)8885888889889090929191919393
Detailed SpecsLearn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>Learn More>
Data may change with product updates.

Size

frameless motor Mounting Dimension
ModelFM 2506FM 2510FM 3808FM 3816FM 5010FM 5016FM 7013FM 7021FM 8507FM 8516FM 8525FM 8527FM 11527BOT FM 11513
Outer Diameter D / (mm)25.025.038.038.050.050.070.070.085.085.085.085.0115.0115.0
Inner Diameter d / (mm)11.611.618.018.030.030.042.042.052.052.052.052.074.089.5
Stator Length L / (mm)11.315.212.519.013.020.017.528.013.026.038.041.640.025.0
Weight / (g)16245582831352003201923705456701,050430
Data may change with product updates.


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