Economy Planetary Gearbox
OUBANG’s economy planetary gearbox line (flange sizes 60–120) delivers exceptional high torque density and precise positioning at an unbeatable price-performance ratio. Designed for general automation, material handling, and packaging systems, our robust spur gearing offers low backlash (typically 8–20 arc-min), making it ideal for applications requiring high precision and smooth operation.
Available in ratios from 3:1 to 512:1, OUBANG’s planetary gearboxes are a perfect match for servo motors, stepper motors, and AC motors. Our gear reducers are trusted in industries such as robotics, conveyors, robotic arms, CNC machinery, and automated production lines.
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- Economy Planetary Gearbox
PL Series Precision Planetary Gearbox | Economy Line
- Economy Planetary Gearbox
PF Series Precision Planetary Gearbox | Economy Line
Economy Planetary Gearbox: Unrivaled Cost-Effective Torque Density, Compact Footprint
The Economy Planetary Gearbox series (also known as a gearhead or speed reducer) is an inline planetary gearhead combining a compact footprint with high output torque and dependable accuracy. Featuring durable, straight-cut spur gears and a rigid alloy steel housing, these speed reducers provide an affordable, drop-in solution for conveyors, packaging lines, simple positioning axes, and general factory automation.
Key Advantages (The Economy Difference)
- High Torque Density: Exceptional power in a compact design with load-sharing planetary gears.
- Low Output Backlash: Typical 8–20 arc-min provides dependable accuracy and repeatable motion for light industrial applications.
- Broad Ratio Range: Available from 3:1 to 512:1 (single and two-stage speed reduction) to match various motor speeds.
- High Efficiency Gearbox: Good efficiency per stage and robust, cost-effective construction ensures low operating costs.
- Easy Integration: Simple mounting with ISO flanges; motor adapters available for common servo, stepper, and induction motors (NEMA/Metric compatibility).
Core Specifications
- Flange Sizes: 60 / 80 / 90 / 120 (compatible with ISO and NEMA standards)
- Ratios: 3:1 to 512:1
- Output Backlash: ~8–20 arc-min (typical)
- Mounting: ISO Flange Mount, NEMA/Metric motor adapters available
- Output Options: Keyed or clamp shaft, solid output
- Construction: Alloy steel gears, carburized & ground; lifetime lubrication
Where It Fits Best (Typical Applications)
- Material Handling: Conveyors, gantry systems, and automated warehousing solutions
- Packaging Machinery: Labeling, wrapping, and simple indexing for high-speed production lines
- Light Industrial: Textile, printing, and light assembly machinery
- Mobile Robotics: AGVs/AMRs and robotic arms for automated systems requiring moderate precision
- Automation Functions: Rotary indexing tables and small CNC Z-axis drives
Selection Tips
Provide the motor model, input speed, required output torque, target ratio, duty cycle, and allowed backlash. We’ll size an economy planetary gearbox that balances performance and cost for your application—and confirm thermal and service-life margins.

