Why is low backlash important in planetary gearboxes?

Backlash is the slight play or lost motion when one direction reverses in a gearbox. In precision robotics and automation, even tiny amounts of backlash (>3 arcminutes) cause positioning errors, instability, and reduced accuracy. AEI planetary gearboxes are manufactured with extremely tight tolerances and precision-ground gears to achieve <3 arcminute backlash — essential for robotic joint positioning, CNC machines, and high-precision assembly equipment where accuracy is critical.

What industries use planetary gearboxes?

Planetary gearboxes are the standard choice in precision automation industries: (1) Robotics — articulated arm joints, collaborative robot drive systems. (2) Machine Tools — CNC positioning, spindle drive systems. (3) Precision Positioning — automated medical equipment, optical positioners. (4) Automation Systems — conveyor speed reduction, automated packaging line control. (5) Aerospace & Defense — actuator drives, flight control systems. Their compact design, high torque density, and predictable motion characteristics make them essential wherever precise, repeatable motion is required.

Planetary Gearboxes — High Torque Inline Gearboxes

Name: Planetary Gearboxes
Brand: Anand Gears

AEI planetary gearbox with high torque density

Precision Power Transmission

High-Precision Planetary Gearboxes for Robotics & Automation

AEI planetary gearboxes deliver exceptional torque density in an exceptionally compact package. The innovative planetary mechanism — where small planet gears orbit around a central sun gear inside a rotating ring gear — distributes loads across multiple simultaneous gear meshes, enabling high reduction ratios in minimal space. Available in 1-stage, 2-stage, and 3-stage configurations with ratios from 3:1 to 512:1, our planetary gearboxes achieve backlash <3 arcminutes through precision manufacturing and tight tolerances. This makes them the standard choice for robotics, machine tools, precision positioning systems, and automation equipment where accuracy and repeatability are non-negotiable.

High torque density — maximum power in minimal volume

Backlash <3 arcminutes for precision positioning

Ratios 3:1 to 512:1 — single, dual, or triple stages

Predictable motion for repeatable automation

Inline shaft configuration for simple integration

Cast iron and lightweight aluminium housings

Engineering Data

Planetary Gearbox Technical Specifications

Detailed specifications for single-stage, dual-stage, and triple-stage planetary configurations.

Configuration	Ratio Range	Backlash	Efficiency	Best For
Single-Stage	3:1–10:1	<3'	95–97%	Low reduction, fast response
Dual-Stage	10:1–100:1	<3'	92–96%	Moderate reduction, robotics
Triple-Stage	100:1–512:1	<3'	87–94%	High reduction, precision control

Understanding Backlash in Planetary Gearboxes

Backlash is the slight play or angular lost motion when the direction of rotation reverses. In an ideal zero-backlash gearbox, the instant the motor reverses direction, the output shaft immediately reverses too. In reality, manufacturing tolerances cause a tiny delay — typically measured in arcminutes (1° = 60 arcminutes). AEI planetary gearboxes achieve <3 arcminutes backlash through precision manufacturing, tight gear tolerances, and advanced assembly techniques.

Why This Matters: In robotics, even 5-10 arcminutes of backlash causes perceptible joint "slop" and reduces end-effector positioning accuracy. In machine tools, backlash introduces runout and surface finish degradation. In automation, backlash creates synchronization errors in multi-axis systems. Our <3 arcminute specification ensures crisp, predictable motion.

Industry Solutions

Planetary Gearbox Applications

Proven in the world's most demanding precision automation environments.

Robotic Articulated Arms

Joint drives in industrial robots, collaborative robots (cobots), and surgical robots. The low backlash ensures precise, repeatable joint positioning. High torque density fits compact wrist assemblies. Smooth operation enables safe human-robot collaboration.

CNC Positioning Drives

X-Y-Z axis drives, spindle speed reducers, and feed drive systems. Precision backlash control is essential for surface finish quality and dimensional accuracy. The predictable motion characteristics enable fast, accurate part production.

Optical & Laser Positioners

Precision pan-tilt systems for laser cutting, alignment tables, and optical inspection equipment. Sub-micron positioning accuracy requires backlash <3 arcminutes. AEI planetary gearboxes enable smooth, accurate optical beam steering.

Medical & Surgical Equipment

Surgical robot actuators, automated diagnostic equipment, and patient positioning systems. Reliability and smooth motion are critical for patient safety. FDA and medical device compliance compatible.

Automated Production Lines

Pick-and-place systems, automated assembly, and conveyor control. Synchronized multi-axis motion requires consistent, predictable gearbox behavior. High reliability minimizes unplanned downtime in 24/7 production.

Aerospace & Defense Systems

Flight control actuators, precision antenna positioners, and unmanned aerial vehicle (UAV) drives. Aerospace-grade reliability and traceability. Custom configurations and certification available.

Pricing & Availability

Anand Gears Planetary Gearboxes are competitively priced for precision automation. Pricing depends on stage configuration, torque rating, and customisation.

Starting From

₹15,000

Single-Stage Units

Mid-Range

₹55,000

Multi-Stage Models

Precision Custom

₹2,50,000+

High-Precision / Aerospace

Prices are indicative and vary based on specifications. GST extra. Contact us for an exact quotation.

Get Exact Quote

Planetary Gearboxes