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Help CenterNGW91 Precision Planetary Reducer for CNC Rotary Tables, Low Backlash Design
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As a professional manufacturer from Jiangsu Manqi Machinery Co., Ltd. (established in 2017, located in Suzhou, China), we are proud to present our NGW91 Precision Planetary Reducer, specifically engineered for CNC rotary tables that demand extremely low backlash and high positioning accuracy. With a factory spanning 10,000–30,000 square meters and a dedicated team of 11–50 skilled employees, we have been supplying reliable precision transmission solutions to Eastern Europe, Southeast Asia, Africa, and South Asia. Our NGW91 reducer combines compact design, robust construction, and outstanding repeatability, making it the ideal choice for your machining center or indexing application.
The NGW91 series planetary reducer features a low backlash design (≤3 arcmin), which ensures minimal angular error during high-speed indexing and heavy cutting operations. Its helical gear teeth provide smoother meshing, higher torque capacity, and quieter operation compared to standard spur gear reducers. The integral bearing support on the output shaft directly handles radial and axial loads from the rotary table, eliminating the need for extra support structures. This reducer is fully compatible with most servo motors from brands like Delta, Siemens, Mitsubishi, and others, thanks to customizable input flanges and keyway options.
Key Features & Benefits
- Ultra-Low Backlash: ≤3 arcmin (standard), ≤1 arcmin (on request) – ensures precise positioning for 4th/5th axis rotary tables.
- High Torque Density: Rated torque up to 200 Nm, peak torque up to 2.5× rated – handles heavy workpieces without compromising accuracy.
- Extended Service Life: Lifetime lubrication (synthetic grease) and sealed design reduce maintenance – ideal for continuous production environments.
- Compact & Lightweight: Flange-mounted design reduces overall machine footprint, perfect for space-constrained CNC systems.
- Wide Ratio Range: Single-stage ratios from 3:1 to 10:1; two-stage ratios up to 100:1 – flexible for different speed/torque requirements.
- High Efficiency: ≥95% per stage – minimizes power loss and heat generation, contributing to energy savings.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | NGW91 |
| Backlash | <3 arcmin (standard), <1 arcmin (precision option) |
| Reduction Ratio | 3:1, 4:1, 5:1, 7:1, 10:1 (single stage); up to 100:1 (multi-stage) |
| Rated Output Torque | 50 – 200 Nm (dependent on ratio) |
| Max. Input Speed | 6000 rpm |
| Efficiency | ≥95% per stage |
| Operating Temperature | -10°C to +90°C |
| Protection Class | IP65 (optional) |
Why Choose Jiangsu Manqi Machinery?
Our factory in Suzhou has been dedicated to manufacturing high-precision gearboxes since 2017. With a modern production facility covering 10,000–30,000 m² and a team of experienced engineers, we control every step from raw material selection to final assembly. Our main markets include Eastern Europe, Southeast Asia, Africa, and South Asia, where our products have been adopted by CNC machine builders and automation integrators. Although our annual export value is below US$1 million, we focus on customized, high-quality solutions rather than mass production. Each NGW91 reducer undergoes rigorous backlash testing and load testing before shipment to ensure consistent performance.
We understand that your CNC rotary table requires reliability and repeatability. The NGW91 precision planetary reducer delivers exactly that – with proven durability in over 500 installations worldwide. Contact us today for a free quotation or to discuss your specific ratio, mounting, or motor interface needs. Our technical team is ready to support you with 48-hour response time and customized drawings.
Frequently Asked Questions
-
Q: What is the typical backlash of the NGW91 reducer?
A: Standard backlash is less than 3 arcmin. For applications requiring even higher precision, we offer a precision version with backlash ≤1 arcmin – please specify when ordering. -
Q: Can I use this reducer with a servo motor from a different brand?
A: Yes. The input flange and shaft connection can be customized to fit most common servo motors (e.g., Delta, Siemens, Mitsubishi, Yaskawa). Provide your motor dimensions and we will adapt it. -
Q: What is the maximum input speed for continuous operation?
A: The maximum recommended continuous input speed is 6000 rpm. However, for optimal service life, we suggest operating below 4500 rpm. -
Q: Is the reducer pre-lubricated? Do I need to add oil?
A: The NGW91 is factory-filled with high-quality synthetic grease and sealed. No additional lubrication is required for the lifetime of the reducer under normal operating conditions. -
Q: What mounting options are available?
A: The reducer supports both flange mounting (direct to rotary table) and foot mounting via an optional adapter plate. Please check the dimensional drawing for compatibility. -
Q: How do I choose the correct ratio for my application?
A: Determine the required output speed/torque and the motor speed. Our standard ratios range from 3:1 to 10:1 per stage. For larger reductions, use two-stage combinations. Our sales team can help you calculate the optimal ratio. -
Q: Do you provide custom output shaft configurations (e.g., hollow shaft)?
A: Yes, we offer customization of the output shaft (solid, hollow, keyed, or splined) based on your rotary table design. Contact us with your requirements. -
Q: What is the lead time for standard models?
A: Standard models (common ratios) are typically shipped within 15–20 working days. Customized orders may take 25–30 working days.
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