VRT high precision flange output planetary gearbox, high precision gearbox for multi-axis automation systems

The VRT high precision flange output planetary gearbox is engineered for demanding motion-control environments where stability, durability, and precision are critical. With its compact flange-output architecture, the VRT series delivers exceptional torsional rigidity and superior torque density, making it suitable for tight installation spaces and high-performance automation equipment. The gearbox utilizes helical gears to ensure exceptionally smooth and quiet operation, reducing noise levels in sensitive working environments and improving the overall responsiveness of servo-driven systems.

To ensure long-term stability, the VRT high precision flange output planetary gearbox incorporates high-performance integral ball bearings designed to significantly enhance load capacity, minimize deflection, and maintain consistent transmission performance even under high acceleration or radial loads. The rigid mechanical construction provides secure power transmission suitable for continuous-duty cycles, rapid indexing motions, and applications that require highly stable positioning. Its backlash rating of less than 3 arcmin (P0 option) reinforces its suitability for precision positioning, synchronized motion, and advanced machine control systems.

A key advantage of the VRT design lies in its maintenance-free lubrication system. Filled with high-viscosity synthetic grease that resists separation and leakage, the gearbox can operate over its entire service life without requiring relubrication, ensuring reliability in environments where downtime must be minimized. The flange and connector options allow seamless mounting to a wide range of servo motors, making integration simple for OEMs, machine builders, and automation engineers.

In addition, its robust structural design enables operation in challenging conditions such as high vibration, extended duty cycles, and demanding industrial workflows. Thanks to its high torque output, efficient power transfer, and durable IP65 protection design, the VRT high precision flange output planetary gearbox aligns well with modern industrial automation practices that prioritize efficiency, accuracy, and reliability, as recognized by industrial guidelines from organizations such as the International Organization for Standardization (ISO) and the European Committee for Standardization (CEN).

  • Quiet Helical Gear Operation
    Helical gears provide smooth, stable transmission with significantly reduced noise and vibration. This VRT high precision flange output planetary gearbox supports improved product performance in working environments where low noise is essential, such as laboratories, medical machinery, and precision manufacturing systems.
  • High Positioning Accuracy
    Backlash levels below 3 arcmin (P0 grade) ensure precise motion control, accurate servo responsiveness, and stable repeatability required in CNC equipment, semiconductor automation, and laser cutting systems.
  • High Rigidity & High Torque Output
    The integrated precision ball-bearing system greatly enhances torsional rigidity, ensuring stable torque output and minimizing shaft deflection during rapid motion or high-load applications. This structural design aligns with principles described by the American Gear Manufacturers Association (AGMA).
  • Flexible Mounting With Flange Output Interface
    The standard and non-standard flange interface options allow seamless installation onto a wide variety of servo motor models worldwide. This ensures compatibility with leading motor brands and simplifies assembly for machinery integrators.
  • Zero Leakage Lubrication System
    High-viscosity, non-separating synthetic grease eliminates the risk of lubricant leakage, ensures long service life, and allows maintenance-free operation throughout the gearbox lifespan.
  • Maintenance-Free Operation
    No grease replacement is required, reducing service costs, minimizing downtime, and improving equipment reliability throughout long production cycles.
SpecsUnitStageRatioVRT047VRT064VRT090VRT110VRT140VRT200VRT255
Rated Output Torque / T2NNm14195013327855510501700
Rated Output Torque / T2NNm15226016033065012002000
Rated Output Torque / T2NNm17195014030055011001800
Rated Output Torque / T2NNm11014401002304509001500
Rated Output Torque / T2NNm220195013327855510501700
Rated Output Torque / T2NNm225226016033065012002000
Rated Output Torque / T2NNm235195014030055011001800
Rated Output Torque / T2NNm240194512026050010001600
Rated Output Torque / T2NNm250226016033065012002000
Rated Output Torque / T2NNm270195014030055011001800
Rated Output Torque / T2NNm210014401002304509001500
Max Output Torque / T2max¹Nm1,24-1003×Nominal Output Torque
Rated Input Speed / n1Nrpm1,24-1005000500040004000300030002000
Max Input Speed / n1mrpm1,24-100100001000080008000600060004000
Micro Backlash P0arcmin14-10≤1≤1≤1≤1≤1≤1≤1
Micro Backlash P0arcmin212-100≤3≤3≤3≤3≤3≤3≤3
Precision Backlash P1arcmin14-10≤3≤3≤3≤3≤3≤3≤3
Precision Backlash P1arcmin220-100≤5≤5≤5≤5≤5≤5≤5
Standard Backlash P2arcmin14-10≤6≤6≤6≤6≤6≤6≤6
Standard Backlash P2arcmin220-100≤7≤7≤7≤7≤7≤7≤7
Torsional RigidityNm/arcmin1,24-10031330801504501010
Max Radial Force / Frmax²N1,24-10043125235430130030645900
Max Axial Force / Famax²N1,24-100990105028502990105901668029430
Service Lifehr1,24-10022000h
Efficiency / η%14-10≥97%
Efficiency / η%220-100≥94%
Weightkg14-100.71.23.05.611.931.656.1
Weightkg220-1001.01.63.77.315.936.970.4
Operating Temperature1,24-100(-15℃~+90℃)
Lubrication1,24-100Synthetic Grease
Protection Class1,24-100IP65
Mounting Position1,24-100Any Direction
Noise Level (n1=3000rpm, No load)dB(A)1,24-100≤56≤58≤60≤63≤65≤67≤70
Moment of Inertiakg·cm²140.030.140.482.747.5423.8754.37
Moment of Inertiakg·cm²150.030.130.472.717.4223.2953.27
Moment of Inertiakg·cm²170.030.130.452.627.1422.4850.97
Moment of Inertiakg·cm²1100.030.130.442.577.0322.5150.56
Moment of Inertiakg·cm²220-400.030.030.130.472.717.4223.29
Moment of Inertiakg·cm²250-1000.030.030.130.442.577.0322.51
VRT High Precision Flange Output Planetray Gearbox dimension stage-1
VRT High Precision Flange Output Planetray Gearbox dimension stage-2

VRT Specifications Sheet (PDF)
VRT 3D Models (STEP/IGES)
Motor Mounting Dimensions PDF
VRT Gearbox Selection Guide

  • Laser Processing Equipment: Laser machinery requires quiet performance, ultra-low vibration, and precise positioning. The helical gear design of VRT high precision flange output planetary gearbox ensures stable speed reduction and improved cutting path accuracy. Its high rigidity also enhances motion stability during rapid scanning and multi-axis movement.
  • Mining & Heavy-Duty Machinery: Mining equipment demands rugged, durable transmission systems capable of handling high torque, extreme temperatures, humidity, dust exposure, and long continuous workloads. The VRT high precision flange output planetary gearbox meets these needs with high power density, strong load capacity, and long service life, making it suitable for heavy-duty conveyors, drilling systems, and mining automation.
  • CNC Machines & Precision Automation: The flange output planetary gearbox’s high precision, low backlash, and strong rigidity make it ideal for CNC machining centers, robotic arms, material handling systems, and other automation applications where positioning accuracy and torque stability are essential.