KB Series Precision Planetary Gearbox | 1 Arc-Min Backlash

This high-performance helical precision planetary gearbox with square output flange delivers ultra-low backlash (up to 1.5 arc-min) and is optimized for maximum torque and positioning precision in industrial applications.

Product Highlights

Gear Ratio Range

Gear Ratio Range

i=3–100, stable torque for diverse applications

Backlash Accuracy

Backlash Accuracy

Economy ≤ 8′ / Precision ≤ 1.5′, ensuring positioning precision

High Efficiency

High Efficiency

Transmission efficiency ≥95%, low energy loss

Mounting Options

Mounting Options

Flange, foot, or shaft output for easy integration

Overview

The KB Series Helical Planetary Gearbox is designed for applications that demand
maximum torque, high precision, and reliable performance under challenging conditions.
As a high-performance helical planetary gearbox, it uses preloaded tapered roller bearings and specially matched seals to ensure stable operation even in environments with dust or water spray.
Its coaxial helical gear design delivers smooth, low-noise torque transmission, making the KB Series an excellent choice for robotics, industrial automation, and high-performance machinery.

Key Features

  • ⚙️ Helical Precision Line – Optimized for smooth, low-noise operation with high torque capacity
  • 🔄 Coaxial Helical Gearbox – Ensures precise torque transmission with minimal backlash
  • 🛠️ Preloaded Tapered Roller Bearings – Handle high axial and radial loads efficiently for longer service life
  • 📏 Wide Gear Ratio Range – From i=3 up to i=100, suitable for diverse industrial applications
  • 🧩 Square Output Flange – Flexible and easy mounting for seamless integration in machinery
  • 🔁 Equidirectional Rotation – Fully compatible with complex automation layouts
  • 🌀 Sealed & Robust Construction – Reliable operation in dusty or wet environments, reducing downtime

Applications

The KB Series Helical Planetary Gearbox is widely used across industries requiring high torque, precision, and durability, including:

  • 🤖 Robotics & Assembly Lines – Precision motion control for robotic arms, pick-and-place systems, and automation cells
  • 🏭 Industrial Automation Equipment – CNC machines, machine tools, and production lines
  • 🚚 Conveyor & Material Handling Systems – Smooth, reliable operation under continuous duty cycles
  • 📦 Packaging & Labeling Machinery – Accurate, low-noise torque transmission for packaging processes
  • High-Performance Machinery – Equipment requiring stable operation under heavy loads and precise torque control
ParameterValue
Frame Sizes60mm, 90mm, 115mm, 142mm, 180mm, 220mm
Planetary Gear Ratios3:1 – 100:1
Max Input Speed10,000 rpm
Backlash (arcmin)Stage 1 (Ratio 4–10): P0 ≤ 1.5′, P1 ≤ 3′, P2 ≤ 5′ Stage 2 (Ratio 20–100): P0 ≤ 3′, P1 ≤ 5′, P2 ≤ 7′
Noise Level≤ 63 dB
Protection GradeIP65
Certifications
Quality Management
Environmental Standard
European Conformity
China Compulsory Cert

Frequently Asked Questions

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