LSM75-21-602-S-2KA

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The LSM75-21-602-S-2KA brushless servo motor achieves a peak torque of 8.8 Nm and a continuous torque rating of 2.36 Nm. Manufactured by Kollmorgen and part of the LSM Brushless Servo Motors series, it weighs 3.1 kg. This motor has a speed of 6000 RPM and a winding resistance of 2.26 Ohms at 25°C.

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Product Description:

The LSM75-21-602-S-2KA is a brushless servo motor manufactured by Kollmorgen. For demanding motion control uses, the product provides consistent torque output and good performance. The motor has both electrical and mechanical parts that work well with robotic systems that need to be precise.

Servo motor LSM75-21-602-S-2KA reaches maximum torque output at 8.8 Nm with constant torque capability of 2.36 Nm. The servo motor produces linear torque reactions through its 0.42 Nm per Amp torque constant. The peak current for the stall is 5.5 A, and the peak current for the highest is 21.6 A. 49 V per kRPM is the energy that stays the same. The motor includes 8 poles that lead to enhanced field precision as well as improved synchronization. The winding resistance exhibits 2.26 Ohms per phase at 25°C and the winding inductance amounts to 17.9 mH. The rotor possesses 0.00033 kg-m² moment of inertia that maintains a consistent speed. The motor body is 3.1 kg, which makes it easier to align the structure and add force. The shaft is made of steel, which keeps the mechanical contact tight. The body has a length of k³ = 171 mm and a face length of k-i² = 148 mm.

The LSM75-21-602-S-2KA servo motor is mechanically compatible with several different industrial automation systems. The motor spins at 6000 rpm and can handle dynamic motion profiles without affecting the accuracy of the control or the speed of the reaction. The low friction makes it easier to speed up and slow down in short cycles. Using the best coil design and electrical resistance together makes sure that the system works reliably. The steel shaft makes rotation stable and enables radial load endurance.

Added Length W/ Brake
+49 mm
Continuous Torque
2.36 Nm (21 In-lb)
Flange Dimensions
70 mm (a), 60 mm (b)
Ke (voltage Constant)
49 V/kRPM
Kt (torque Constant)
0.42 Nm/Amp
Maximum Current
21.6 Amps peak
Motor Net Weight
3.1 kg (6.8 lb)
Peak Torque
8.8 Nm (78 In-lb)
Rotor Moment Of Inertia
0.000033 kg-m² (0.00029 lb-in-s²)
Shaft Material
Steel
Speed
6000 RPM
Stall Current
5.5 Amps peak
Winding Inductance
17.9 mH (Phase to Phase)
Winding Poles
8
Winding Resistance
2.26 Ohms at 25°C

Frequently Asked Questions about LSM75-21-602-S-2KA:

Q: Does LSM75-21-602-S-2KA offer steel shaft support?

A: Yes, the motor includes a steel shaft that ensures rigidity and enhances the mechanical load-bearing capacity during high-speed rotation.

Q: How does LSM75-21-602-S-2KA handle the torque output range?

A: The motor delivers 2.36 Nm continuous torque and 8.8 Nm peak torque that supports accurate and momentary high-load responses.

Q: Why does LSM75-21-602-S-2KA use 17.9 mH inductance?

A: The inductance value minimizes current ripple and stabilizes the phase current response, which improves the overall control precision of the motor.

Q: Do LSM75-21-602-S-2KA dimensions support compact layout?

A: Yes, the dimensions, such as 171 mm length, allow efficient integration into compact spaces without limiting mechanical coupling configurations.

Q: How does LSM75-21-602-S-2KA maintain thermal balance operation?

A: The motor uses 2.26 Ω phase-to-phase resistance that limits heat generation and ensures consistent thermal stability during extended operation.


Internal Product Review

  • ‘‘The LSM75-21-602-S-2KA ensures reliable torque delivery with a 2.36 Nm continuous torque. It maintains thermal efficiency with 2.26 Ω resistance and 17.9 mH inductance. The motor supports high responsiveness through a rotor inertia of 0.00033 kg-m². The voltage constant is 49 V per kRPM.’’

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