KBM-43S03-B00

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The KBM-43S03-B00 is a direct drive rotary motor designed with a continuous stall torque of 5.19 Nm and a rated speed of 440 rpm. Manufactured by Kollmorgen as part of the KBM Brushless Motors series, it features a frame size of KBM-43 and a stack length of 03. The motor operates at 325 VDC and has IP40 protection.

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Product Description:

The top-rated KBM-43S03-B00 unit from Kollmorgen headlines the KBM Brushless Motors range as a direct drive rotary motor, eliminating gearbox backlash for precise motion. It mounts in a frame of KBM-43 that matches modular actuator interfaces and also streamlines machine integration. Moreover, it spans a stack length of 03 which balances axial space and torque generation for compact system footprints. The motor’s winding code B00 ensures uniform phase distribution and delivers consistent electromagnetic performance.

This brushless servo motor produces a continuous stall torque of 5.19 Nm, thus sustains constant load holding without overheating. It peaks at 15.2 Nm torque which accommodates short-duration load surges without stall. The device draws a continuous stall current of 3.05 Arms to limit thermal buildup during sustained operation. The model tolerates a peak current of 7.61 Arms and covers transient drive demands without component stress. It can operate on a 325V DC bus voltage that matches high-voltage servo drives. It reaches a rated speed of 440 RPM which suits low-speed, high-torque applications in direct-drive assemblies.

The rotor inertia of 0.000524 kg·m² for the KBM-43S03-B00 supports rapid acceleration and deceleration just to improve cycle times in dynamic processes. With a mass about 13.7 kg for the stator and 7.5 kg for the rotor aids predictable inertia matching for motion control tuning. It offers a thermal resistance of 0.26 °C/W, facilitating effective heat sinking under continuous load. It also carries an IP40 protection rating and requires enclosure mounting to shield internal windings from debris. The KBM motor presents an outside diameter of 159.78 mm which maximizes torque density through a large rotary surface. It employs 16 poles for reducing cogging and harmonic distortion for ultra-smooth rotation.

Bus Voltage
325 VDC
Continuous Stall Current
3.05 Arms
Continuous Stall Torque
5.19 Nm
Frame Size
KBM-43
Motor Type
Direct Drive Rotary Motor
Peak Current
7.61 Arms
Peak Torque
15.2 Nm
Protection Rating
IP40 (open frame, requires enclosure)
Rated Speed
440 rpm
Rotor Inertia
0.000524 kg·m²
Stack Length
03
Thermal Resistance
0.26 °C/W
Weight (stator/rotor)
13.7 kg / 7.5 kg
Winding Code
B00

Frequently Asked Questions about KBM-43S03-B00:

Q: Is the KBM-43S03-B00 suitable for high-voltage drives?

A: The KBM-43S03-B00 accepts a 325 VDC bus voltage which aligns with industry-standard servo amplifiers. It delivers high power density with minimal losses.

Q: How does the KBM-43S03-B00 manage sudden torque demands?

A: The 15.2 Nm torque which covers brief overload conditions without stalling and further protects the system from abrupt load changes.

Q: What ensures the KBM-43S03-B00’s low-speed performance?

A: The KBM-43S03-B00 runs at a rated speed of 440 rpm which suits slow, precise operations. It delivers steady torque at reduced rotational rates.

Q: Can the KBM-43S03-B00 start without gearbox coupling?

A: This direct drive rotary motor design eliminates backlash from gearboxes. It provides immediate torque response from standstill.

Q: How does the KBM-43S03-B00’s inertia affect acceleration?

A: The motor’s rotor inertia of 0.000524 kg·m² supports quick changes in speed and also boosts cycle times in dynamic applications.


Internal Product Review

  • ‘‘This brushless motor KBM-43S03-B00 offers a KBM-43 frame size which fits standard actuator mounts for hassle-free installs. Its stack length of 03 delivers compact axial dimensions that preserve the machine envelope. The drive’s winding code of B00 balances electrical characteristics for smooth response.’’

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