Home » Planetary Gearbox » AB Series
AB Series Helical Precision Planetary Gearbox
The AB Series is a high-precision helical planetary gearbox for servo motors and motion control systems, offering low backlash, high rigidity and stable torque transmission. With multiple frame sizes and reduction ratios available, it is suitable for CNC machinery, robotics, automation equipment and precision positioning applications.
Frame Sizes
AB042–AB220
Gear Ratios
3:1–100:1
Low Backlash
Multiple precision grades
Servo Motor Matching
Flexible adapter options
Overview
The AB Series helical planetary gearbox features an optimized gear structure, high-rigidity housing and precision machining technology, delivering excellent positioning accuracy, high torque capacity and long service life.
With multiple frame sizes, reduction ratios and precision grades available, the AB Series can meet the requirements of various servo motion applications, providing a reliable and cost-effective transmission solution.
Design Features
Integrated Ring Gear & Output Housing
The ring gear and output housing adopt an integrated structure to improve housing rigidity, dimensional consistency and machining accuracy.
Integrated Planet Carrier & Output Shaft
The planet carrier and output shaft adopt an integrated design to improve torsional rigidity, torque transmission stability and overall output strength.
Wide-Span Bearing Support
Front and rear bearings are arranged with a wide span inside the housing to improve output rigidity, load stability and running accuracy.
Adjustable Bearing Clearance
The axial bearing clearance can be adjusted through the planet carrier assembly to support accurate installation, stable operation and consistent output performance.
AB Series Models & Selection
|
Model |
Frame Size / Motor Frame |
Stages |
Ratio Range |
Rated Input Speed |
Max. Input Speed |
Noise |
|
AB042 |
42 mm / NEMA17 |
1 / 2 |
3:1–100:1 |
5,000 rpm |
10,000 rpm |
≤56 dB |
|
AB060 |
60 mm / NEMA23 |
1 / 2 |
3:1–100:1 |
5,000 rpm |
10,000 rpm |
≤58 dB |
|
AB090 |
90 mm / NEMA34 |
1 / 2 |
3:1–100:1 |
4,000 rpm |
8,000 rpm |
≤60 dB |
|
AB115 |
115 mm / NEMA56 / NEMA143 |
1 / 2 |
3:1–100:1 |
4,000 rpm |
8,000 rpm |
≤63 dB |
|
AB142 |
142 mm |
1 / 2 |
3:1–100:1 |
3,000 rpm |
6,000 rpm |
≤65 dB |
|
AB180 |
180 mm |
1 / 2 |
3:1–100:1 |
3,000 rpm |
6,000 rpm |
≤67 dB |
|
AB220 |
220 mm |
1 / 2 |
3:1–100:1 |
2,000 rpm |
4,000 rpm |
≤70 dB |
Servo Motor Matching
Compatible Motor Types
Information Needed for Matching
Servo brand & model
Flange size
Output shaft diameter
Output shaft length
Required reduction ratio
Required output torque
Typical Applications of the AB Series
Robotic Arms & Cobots
Low-backlash options down to ≤1 arcmin (P0) and high torsional rigidity support precise robotic motion and positioning.
CNC Rotary & Indexing Axes
High torsional rigidity and precise motion transmission for CNC rotary tables, indexing axes and positioning equipment.
High-Speed Packaging & Labeling
Smooth, repeatable motion for servo-driven packaging, labeling and automated production equipment.
Gantry & Linear Axis Systems
Rigid torque transmission for gantry systems, linear axes and precision rack-and-pinion drive applications.
AGVs & Mobile Robotics
Compact, high-torque transmission for AGVs, AMRs and other servo-driven mobile robotic platforms.
Precision Servo Motion Systems
Low-backlash transmission for servo-driven positioning, indexing and synchronized motion applications.
Why Choose the AB Series
High Precision
Low backlash for accurate positioning and smooth motion.
High Rigidity
Helical gear design provides high stiffness and stable torque transmission.
Fast Delivery
Standard AB Series models can typically be shipped within 3–7 working days, depending on model and quantity.
Multiple Options
Multiple ratios, frame sizes and adapter options for different servo applications.
Frequently Asked Questions
Related Products
Need Help Choosing the Right AB Series Gearbox?
Share your motor model, gear ratio, output torque or flange drawing. Our engineering team will help you configure the right AB Series gearbox and motor interface, usually within 1 business day.