gear box final drive reducer
2 month ago
Product details
The GFT series of travel speed reducers are ideal for driving vehicles and other mobile equipment with gear or chain drive. In addition, it can be applied wherever there is movement, rotation and placement. The GFT has different models for wide range of its use with compact structure, hardened surfaces which gives the equipment excellent load bearing capacity and operational reliability.
1. Model Breakdown and Meaning
• GFW: Series code, potentially indicating:
• G: General-purpose (General) or industrial-grade (Industrial) design.
• F: Final drive or flange-mounted (Flange Mount).
• W: Worm gear or planetary gear configuration (confirm with manufacturer specifications).
• 5190:
• 51: May represent gear ratio (e.g., 51:1 reduction) or torque class.
• 90: Could denote output shaft diameter (90mm), power rating (e.g., 90kW), or design revision number.
Note: Exact definitions vary by manufacturer; refer to technical documentation for confirmation.
2. Core Specifications
• Gear Ratio: Typically51:1(input speed/output speed), but verify per model.
• Rated Torque:
• Output torque: Up toseveral thousand N·m(e.g., 5,000–10,000 N·m), depending on power and ratio.
• Peak torque: Short-term overload capacity may be higher (check technical specs).
• Input Power:
• Motor compatibility: Usually15–75kW(suitable for medium-duty industrial applications).
• Input speed: Standard1,450–2,900 rpm(matches three-phase asynchronous motors).
• Output Speed:
• Range: Approx.28–57 rpm(calculated based on 51:1 ratio and input speed).
• Efficiency:
• Worm gear type: ~60–75%(self-locking reduces efficiency).
• Planetary gear type: Up to90–95%(higher efficiency but costlier).
3. Structural Design
• Transmission Type:
• Worm Gear: Strong self-locking, ideal for vertical loads or anti-backdrive applications (lower efficiency).
• Planetary Gear: High torque density and efficiency, suitable for frequent starts or heavy-duty cycles.
• Materials and Processes:
• Gears: Alloy steel (e.g., 20CrMnTi), carburized and quenched to HRC 58–62.
• Housing: Cast iron (HT250) or aluminum alloy (lightweight), sealed against dust.
• Lubrication System:
• Forced or splash lubrication, recommended oil:ISO VG 320–460industrial gear oil.
• Equipped with oil level sight glass and breather vent to prevent overheating/pressure buildup.
• Sealing Design:
• Dual-lip骨架油封 (radial shaft seals) on input/output shafts to prevent leaks.
• Housing joints sealed with O-rings or paper gaskets, protection classIP54.
4. Applications
• Construction Machinery:
• Track drives for excavators and loaders.
• Slewing mechanisms or winch drives for cranes.
• Industrial Automation:
• Conveyor and hoist power transmission.
• Robot joint drives or rotary tables.
• Agricultural Machinery:
• Transmission systems for combine harvesters and forage choppers.
• Pump drives for irrigation equipment.
• Renewable Energy:
• Pitch control systems for wind turbines or solar tracker actuators.
5. Key Features
• High Reliability:
• Gear mesh accuracy:Grade 6(GB/T 10095), smooth operation, noise ≤75dB.
• Bearings: Imported brands (e.g., SKF, NSK), lifespan >20,000 hours.
• Versatility:
• Configurable with brakes (electromagnetic/hydraulic) or encoders (for closed-loop control).
• Supports multi-directional installation (horizontal, vertical, inverted).
• Easy Maintenance:
• Modular design allows individual gear replacement.
• Drain and fill ports for convenient oil changes.
6. Selection Guidelines
1. Define Operating Conditions:
• Load type (constant/impact), duty cycle (continuous/intermittent), ambient temperature (-20°C to +50°C).
2. Match Parameters:
• Select gear ratio based on motor power and required output torque.
• Example: For a 30kW motor needing 8,000 N·m output torque, a ratio ≥40:1 is required.
3. Check Compatibility:
• Verify input/output shaft dimensions and flange standards (e.g., ISO, NEMA) against equipment.
4. Alternative Models:
• If GFW5190 is unavailable, consider siblings (e.g., GFW4190, GFW6190) or competitors (e.g., SEW, FLENDER).
7. Common Issues and Maintenance
• Troubleshooting:
• Oil leaks: Inspect seals for wear or housing cracks.
• Abnormal noise: Gear/bearing damage.
• Overheating: Insufficient lubrication or overload.
• Maintenance Schedule:
• Check oil level/quality every 6 months; replace gear oil every 2 years.
• Periodically tighten bolts to prevent loosening.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
3 year
Main Product:
hydraulic motor ,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system
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