Berger Lahr VRDM 368/50 LNB
Berger Lahr VRDM 368/50 LNB
Berger Lahr VRDM 368/50 LNB
Berger Lahr VRDM 368/50 LNB
Berger Lahr VRDM 368/50 LNB
Berger Lahr VRDM 368/50 LNB
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VRDM 368/50 LNB

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The VRDM 368/50 LNB is a 3-phase stepping motor from Berger Lahr with 57.2 mm flange, 1.5 Nm nominal torque, 1.70 Nm holding torque, selectable step resolutions up to 10,000 steps/rev, and a maximum supply voltage of 230 VAC / 325 VDC.
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Technical specifications for VRDM 368/50 LNB

  • Manufacturer:
    Berger Lahr
  • Part Number:
    VRDM 368/50 LNB
  • Product Family:
    Berger Lahr
  • Motor Type:
    3-phase stepping motor
  • Flange Size:
    57.2 mm square
  • Max. Supply Voltage (AC):
    230 VAC
  • Max. Supply Voltage (DC):
    325 VDC
  • Nominal Torque (MN):
    1.5 Nm
  • Holding Torque (MH):
    1.70 Nm
  • Rotor Inertia (JR):
    0.38 kgcm²
  • Steps per Revolution:
    200 / 400 / 500 / 1000 / 2000 / 4000 / 5000 / 10000
  • Step Angle:
    1.8° / 0.9° / 0.72° / 0.36° / 0.18° / 0.09° / 0.072° / 0.036°
  • Phase Current Options:
    0.9 A, 1.9 A, 5.8 A RMS
  • Winding Resistance:
    0.74 Ω (N winding), 4.8 Ω (H winding)
  • Max. Radial Force (1st shaft):
    24 N
  • Max. Axial Force (tension):
    100 N
  • Nominal Bearing Life:
    20,000 hours
  • Key Benefit:
    Solves the challenge of precise positioning with selectable step resolutions up to 10,000 steps/rev, high torque density, and flexible voltage compatibility for diverse automation applications.
  • Weight:
    1.98 kg
  • Estimated shipping dimensions:
    20.6x6x8cm
  • Tariff Code:
    8412291000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Protection Mechanisms Installation and Upgrades

Features:

  • Selectable step resolutions from 200 to 10,000 steps per revolution enable precise positioning with step angles as fine as 0.036°.
  • High torque density with 1.5 Nm nominal torque and 1.70 Nm holding torque in a compact 57.2 mm square flange package.
  • Flexible voltage compatibility with maximum supply of 230 VAC or 325 VDC and multiple phase current options for optimized performance.
The VRDM 368/50 LNB offers exceptional positioning flexibility with eight selectable step resolutions ranging from 200 to 10,000 steps per revolution. This translates to step angles from 1.8° down to an ultra-fine 0.036°, allowing engineers to balance between speed and positional accuracy based on application requirements.

Despite its compact 57.2 mm square flange, the VRDM 368/50 LNB delivers impressive torque performance with 1.5 Nm nominal torque and 1.70 Nm holding torque. This high torque density makes it suitable for direct-drive applications that would typically require larger motors or gearboxes. The motor achieves this through optimized 3-phase winding configurations, available in HH (5.8 A), N (1.9 A), or H (0.9 A) current ratings.

The VRDM 368/50 LNB accepts a wide range of supply voltages—up to 230 VAC or 325 VDC—enabling seamless integration with various drive platforms. This voltage flexibility allows system designers to optimize power delivery based on speed-torque requirements. For applications requiring higher torque output, the motor can be combined with planetary gearboxes including PLE 40, PLE 60, and PLS 70 series.

The VRDM 368/50 LNB Berger Lahr 3-phase stepping motor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Berger Lahr VRDM 368/50 LNB 3-phase stepping motor Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Berger Lahr VRDM 368/50 LNB 3-phase stepping motor Specs

General

  • Manufacturer Berger Lahr
  • Model VRDM 368/50 LNB
  • Condition New Original ready stock
  • Product Family VRDM 364,VRDM 366
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Industrial Automation and Robotics: Used for conveyor belt control, automated assembly lines, and precise displacement of robot joints.
  • Packaging and Printing Equipment: Provides consistent synchronization in labeling, film feeding, or printhead positioning.
  • CNC Machining: Used as feed drives for small milling machines or engraving machines.
  • Medical Equipment: Used in laboratory analytical instruments requiring high reliability and microstepping control.
  • Overheat Protection: The motor is typically equipped with a thermistor (such as a PTC) to monitor winding temperature and prevent motor burnout due to overload.
  • Insulation and Protection Rating: Typically has an IP40 or higher protection rating (depending on the specific sub-model), protecting against dust and minor oil contamination.
  • Fault Diagnosis: When used with a compatible drive (such as the Twin Line series), faults such as phase loss, short circuit, or stall can be identified.
  • Installation Environment: Ensure the motor is installed in a well-ventilated location and use a coupling to ensure the concentricity of the motor shaft and load shaft to reduce bearing wear.
  • Wiring Specifications: This model is a three-phase stepper motor. Wiring must strictly follow the driver wiring diagram to avoid incorrect phase connections that could cause motor vibration or reverse rotation.
  • Upgrade Path:If the existing system is aging, it is recommended to check the driver's compatibility. Modernization upgrades typically involve replacing the older driver with a Schneider Electric Lexium series driver to obtain more advanced bus control (such as EtherCAT or CANopen).
  • Spare Parts Replacement: When replacing an older model, ensure that the flange dimensions, shaft diameter, and encoder interface are consistent.
Description
The VRDM 368/50 LNB is a high-performance 3-phase stepping motor from the VRDM 36x series, featuring a 57.2 mm square flange. It delivers a nominal torque of 1.5 Nm and a holding torque of 1.70 Nm, making it suitable for demanding motion control applications

With a maximum supply voltage of 230 VAC or 325 VDC, the VRDM 368/50 LNB offers flexibility for integration with various drive systems. The motor phase current is configurable at 0.9 A RMS (H winding), 1.9 A RMS (N winding), or 5.8 A RMS (HH winding), allowing optimization between torque output and power consumption. 

The VRDM 368/50 LNB is designed for reliable long-term operation with a nominal bearing life of 20,000 operating hours at 10% failure probability. It can withstand radial forces up to 24 N at the first shaft end and axial forces up to 100 N in tension. 

This stepping motor solves the challenge of precise positioning in industrial automation with its wide range of selectable step resolutions and robust construction. 
Alternative Names
VRDM 364 VRDM 366
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the maximum supply voltage for the VRDM 368/50 LNB?
The motor accepts up to 230 VAC or 325 VDC, providing flexibility for integration with various drive systems.
What step resolutions are available with the VRDM 368/50 LNB?
Step resolutions are selectable from 200 to 10,000 steps per revolution, with step angles ranging from 1.8° down to 0.036° depending on the controller.
What is the nominal torque and holding torque of this motor?
The VRDM 368/50 LNB delivers 1.5 Nm nominal torque and 1.70 Nm holding torque, suitable for demanding motion control applications.
What gearboxes can be combined with the VRDM 368/50 LNB?
It can be paired with planetary gearboxes such as PLE 40, PLE 60, and PLS 70 for torque multiplication.