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Definition & Function
A winch gear reducer is a power transmission device that:
Reduces motor speed while multiplying torque
Enables controlled load lifting/lowering
Maintains load position through mechanical advantage
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Key Components
Gearing System: Helical/planetary/worm gears
Housing: Cast iron/steel/aluminum alloys
Shafts: Hardened/tempered alloy steel
Bearings: Heavy-duty tapered roller bearings
Seals: Labyrinth/lip seals for contamination protection
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What are the core advantages of Winch Gear Reducers
Powerful Torque Output Capability
1. High torque amplification ratio: Precision gear transmission can amplify motor torque by 50-200 times
2. Heavy-duty design: Reinforced gears and bearings with maximum load capacity up to 500kNm
3. Smooth startup: Multi-stage reduction effectively minimizes startup impact, protecting the transmission system
Exceptional Reliability
1. Long-life design:
Gears made of 20CrMnTi alloy steel with carburizing and quenching (HRC58-62)
Bearing life exceeding 50,000 hours (L10 standard)
2. Fully sealed structure: IP65 protection rating effectively prevents dust and moisture ingress
3. Overload protection: Built-in mechanical overload protection device (adjustable)
Precise Control Performance
1. Low backlash: Precision ground gear pairs with backlash <15 arc-min (high-precision models)
2. Stepless speed regulation: Combined with variable frequency motors for 0.1rpm-level speed adjustment
3. Self-locking function: Worm gear models feature mechanical self-locking with safety factor up to 1.5x
High Efficiency and Energy Saving
1. Transmission efficiency:
Helical gear type: 96-98%
Planetary gear type: 94-97%
Worm gear type: 85-90%
2. Optimized design: Profile-modified gear technology reduces meshing noise by 3-5dB
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The Drawing and Technical Parameters
Model | Output Torque Tmax Nm | Ratio | Hydraulic motor | Max.input Speed r/min | Braking Torque max. Nm | Brake Press. Mpa | Weight | |
GFT9W2 | 6300 | 20 | A2F45 | A1OVE45 K45 | 3500 | 250 | 1.8-5 | 49 |
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Industry Applications
Marine: Anchor handling, mooring winches
Construction: Tower crane hoists
Mining: Dragline excavators
Oil & Gas: Draw works
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Maintenance Essentials
Lubrication:
Oil bath: ISO VG 220-460
Grease: NLGI #2 (for sealed units)
Inspection Intervals:
Monthly: Seal condition
Quarterly: Oil analysis
Annually: Bearing wear check
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Payment terms, Delivery and Service
Payment: 30%deposit,70% before shipment. All the payment can be negotiated, generally by T/T .
Delivery: 20-25 days after receipt of your payment.
Service: 24 hours online service, technical overseas service.
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FAQ
Q: Is your brand can be perfectly replaced and interchanged?
A: Yes, our models are the same as REXROTH GFT series.
Q: Can you supply customized service?
A: Yes, we can customize the gearbox according to your demand and OEM is also available.
Q: How about your quality?
A: Thanks to the work of our professional engineers and experienced team, our products are of superior quality. Years of experience enable us to meet the requirements of our customers, which is why our solutions are popular in the market.
Q: How's your warranty period?
A: We can give you one year after sales warranty.
Q: What's your MOQ?
A: 1 set.
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