P Series Planetary Gearbox – 25-4000 Ratio, Up to 2600kN.m
The P Series Planetary Gearbox delivers high-torque power transmission with ratios from 25:1 to 4000:1 and up to 2600kN.m torque. Featuring a robust nodular cast iron housing and precision planetary gear sets, it ensures high efficiency, low noise, and reliability for heavy-duty applications. With modular designs and versatile configurations, DONGQI’s P Series is ideal for demanding industrial environments.
Applications of P Series Planetary Gearbox
The P Series excels in heavy-duty industrial applications, including:
- Roller Presses – High-torque power for material processing.
- Bucket Wheel Drives – Reliable drive for mining equipment.
- Slewing and Running Mechanisms – Precise motion for cranes and excavators.
- Mixers and Agitators – Consistent torque for industrial mixing.
- Conveyors – Smooth operation for steel, scraper, and chain systems.
- Rotary Kilns and Mills – Durable performance for cement and steel industries.
This epicyclic gearbox is perfect for high-load, high-efficiency tasks.
Advantages of P Series Planetary Gearbox
Key benefits include:
- High Torque Output – Up to 2600kN.m for heavy-duty applications.
- Wide Ratio Range – 25:1 to 4000:1 for precise control.
- High Efficiency – Planetary gear sets optimize power transmission.
- Low Noise – Precision engineering reduces vibration.
- Highly Modular – Flexible configurations for diverse setups.
- Durable Construction – Nodular cast iron housing ensures long service life.
- Versatile Integration – Combines with helical, worm, bevel, or helical-bevel gear units.
Technical Parameters of P Series Planetary Gearbox
| Type | Ratio |
|---|---|
| P2N (2 Stage) | 25, 28, 31.5, 35.5, 40 |
| P2L (2 Stage) | 31.5, 35.5, 40, 45, 50, 56, 63, 71, 80, 90, 100 |
| P2S (2 Stage) | 45, 50, 56, 63, 71, 80, 90, 100, 112, 125 |
| P2K (2 Stage) | 112, 125, 140, 160, 180, 200, 225, 250, 280, 320, 360, 400, 450, 500, 560 |
| P3N (3 Stage) | 140, 160, 180, 200, 225, 250, 280 |
| P3S (3 Stage) | 280, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900 |
| P3K (3 Stage) | 560, 630, 710, 800, 900, 1000, 1120, 1250, 1400, 1600, 1800, 2000, 2240, 2500, 2800, 3150, 3550, 4000 |
Frame Sizes: 9, 10, 11, … 34, 35, 36 (excluding 15)
Maximum Torque: Up to 2600kN.m
Main Components
Housing
- Material: Nodular cast iron (ductile iron) for superior strength and durability.
- Design: Robust and compact for heavy-duty applications.
Gearset
- Type: Planetary gear set (epicyclic gearing) for high efficiency and torque.
- Feature: Precision-engineered for low noise and smooth operation.
Input Configurations
- Integrated with AC motors, hydraulic motors, or geared motors.
- Supports IEC-normalized motor flange, motor adaptor, or keyed solid shaft input.
Output Configurations
- Keyed solid shaft output.
- Involute splined solid or hollow shaft output (GB or DIN standard).
- Hollow shaft output with shrink disc.
Models and Variants
- P2N: 2-stage planetary, coaxial.
- P2L: 2-stage planetary with spiral bevel gear pair, right angle.
- P2S: 2-stage planetary with helical gear pair, parallel shaft.
- P2K: 2-stage planetary with helical and bevel gear pair, right angle.
- P3N: 3-stage planetary, coaxial.
- P3S: 3-stage planetary with helical gear pair, parallel shaft.
- P3K: 3-stage planetary with helical and bevel gear pair, right angle.
Safety Features
The P Series planetary gearbox ensures safe operation through:
- Robust Housing: Nodular cast iron withstands high stress and wear.
- Precision Gears: Planetary gear sets minimize vibration for stable performance.
- Reliable Inputs: Compatible with AC, hydraulic, or geared motors for secure integration.
- Stable Outputs: Keyed or splined shafts ensure reliable power transmission.
Customization Options
- Torque Capacity: Up to 2600kN.m for heavy-duty needs.
- Gear Ratios: 25:1 to 4000:1 for precise control.
- Frame Sizes: 9 to 36 (excluding 15) for diverse applications.
- Mounting Types: Horizontal or vertical mounting.
- Accessories: Gear unit base, torque arm, motor mounting bracket, dip lubrication tank, forced lubrication pump, cooling fan, auxiliary cooling devices.
Installation and Lubrication
- Mounting Options: Horizontal or vertical mounting for flexibility.
- Lubrication: Oil immersion and splash lubrication or forced lubrication with pump.
- Cooling: Natural cooling, cooling fan, or auxiliary cooling devices.
Maintenance Best Practices
- Lubrication Checks: Inspect oil levels every 6 months; use forced lubrication for heavy-duty use.
- Gear Inspection: Annual checks for wear on planetary gear sets.
- Cooling System Maintenance: Ensure cooling fans and devices are functional.
- Clean Environment: Prevent debris from affecting gears or shafts.
Economic Benefits
- Cost-Effective Design: Modular structure reduces installation costs.
- Energy Efficiency: High-efficiency gears lower power consumption.
- Long Service Life: Durable nodular cast iron minimizes replacement needs.
- Low Maintenance: Advanced lubrication systems reduce upkeep expenses.
Why Choose the P Series Planetary Gearbox?
The P Series planetary gearbox from DONGQI offers high-torque, high-efficiency power transmission for heavy-duty applications. With a 25-4000 ratio, up to 2600kN.m torque, and low-noise operation, it’s ideal for conveyors, kilns, and mixers. Its modular design and robust construction ensure reliable, cost-effective performance.
For more information, technical support, or a professional quote, contact us via WhatsApp/Skype: +8615993097180, email: [email protected], or consultation hotline: +8615993097180.




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