NBD Reducer
- Applicable scenarios : High-power transmission in the metallurgy, mining and building materials industries needs to withstand high impact loads.
- Transmission level and structure : Three-stage planetary gear transmission, using base connection (D type), supports heavy-load scenarios.
- Transmission ratio range : 4-1250, covering large speed ratio requirements.
-
Input power range :
13.9-28842kW, suitable for high power motors.
- INTRODUCTION
- SPECIFICATION
- RELATED
- INQUIRY
NBD Series Planetary Gear Reducer Technical Specifications
1. Overview
The NBD series double-stage planetary gear reducer combines modular design with heavy-duty performance, ideal for mining, metallurgy, and heavy industry applications requiring high shock load capacity (up to 1,029 kN·m torque).
2. Structural Design
Core Components
Gears: 20CrMnTi alloy steel (HRC58-62 hardness)
Planetary Carrier: Dual-stage with load equalization
Bearings: Double-row cylindrical roller bearings
Key Features
Modular design for easy maintenance
IP55 protection with labyrinth seals
Forced lubrication system (N320/N460 oil)
3. Technical Highlights
| Parameter | Value |
|---|---|
| Transmission Efficiency | ≥93% (double-stage) |
| Torque Density | 76 N·m/kg |
| Speed Ratio Range | 18-25,000 |
| Noise Level | ≤85 dB(A) |
4. Model Comparison
| Feature | NBD Series | NGW Series |
|---|---|---|
| Speed Ratio | 18-25,000 | 3-12 (single-stage) |
| Weight Efficiency | 40% lighter | Standard |
| Typical Applications | Heavy shock loads | Moderate loads |
5. Technical Parameters
| Model | Power (kW) | Input Speed (rpm) | Torque (N·m) | Ratio |
|---|---|---|---|---|
| NBD280 | 55-160 | 1500-3000 | 180-860 | 18-80 |
| NBD1120-31.5 | 2000 | 1500 | 1029 | 25-4000 |
6. Installation & Maintenance
Alignment: ≤0.1mm shaft parallelism tolerance
Lubrication: Initial 500hr oil change interval
Monitoring: Bearing temp ≤85℃, vibration ≤4.5mm/s
7. Compliance Standards
JB/T 8853-2001 (Cylindrical Gear Reducers)
GB/T 10095-2008 (Gear Accuracy)
8. Summary
The NBD series delivers exceptional power density (76 N·m/kg) for heavy industrial applications. Key selection criteria include shock load requirements (-40℃~45℃ operation range) and ratio needs (up to 25,000:1). Proper installation alignment ensures 100,000+ hour service life.
| Model | Rated Torque (kN·m) | Ratio Range | Input Speed (rpm) | Output Torque (kN·m) | Efficiency (%) | Weight (kg) | Backlash (arcmin) | Mounting Type |
|---|---|---|---|---|---|---|---|---|
| NBD560 | 120 | 31.5-400 | 1500-3000 | 3.8-48 | ≥96 | 850 | ≤5 | B5/B14 |
| NBD850 | 240 | 25-315 | 1500-2800 | 9.5-120 | ≥96 | 2200 | ≤6 | B35/V1 |
| NBD1200 | 450 | 20-250 | 1000-2400 | 22.5-280 | ≥95 | 4800 | ≤7 | B34/V6 |
Key Specifications:
Gear System: 3-stage planetary transmission with floating sun gear
Material:
Gears: 20CrMnTiH carburized steel (HRC 58-62)
Housing: GG25 cast iron with anti-vibration design
Lubrication: Forced oil circulation system (ISO VG320)
Efficiency: 95-97% (3-stage configuration)
Protection Class: IP65 standard sealing
Temperature Range: -25℃ to +80℃ operation
Standards: Complies with GB/T 19074-2010 and ISO 6336
