Helical Gear Units with Large Center Distance
La Unidad de Engranajes para Aerador, componente vertical especializado para plantas de tratamiento de aguas residuales, impulsa sistemas de aireación. Con engranajes helicoidales/cónico-helicoidales, resiste cargas axiales/radiales, tiene sellos anti-fuga y lubricación eficiente. Rango de relación 6,3-112, torque 10,5-173 kNm, integra control inteligente para mantenimiento predictivo.
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Estimated Delivery Date: Mar 06-Mar 06
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FLENDER Helical Gear Units with Large Center Distance
As a high-performance transmission solution tailored for heavy-duty industrial scenarios, FLENDER Helical Gear Units with Large Center Distance are engineered to deliver exceptional reliability and efficiency in applications requiring parallel arrangement of large-diameter components. With decades of expertise in drive system engineering, FLENDER has optimized this gear unit series to address the core demands of high-torque transmission, structural flexibility, and long-term stability in harsh operating environments.
A defining feature of this series is its extended center distance design, which enables parallel mounting of motors and large-diameter working components (such as winding drums and impellers) without the need for custom modifications. Constructed with torsionally rigid welded steel housings that undergo stress relief and precise alignment, the gear units effectively withstand extreme radial and axial loads, while minimizing vibration and noise during operation.
The gear units adopt precision-ground helical gears, featuring a large tooth contact ratio and hardened tooth surfaces to ensure smooth meshing, high load-bearing capacity, and reduced wear. Available in 2 to 3 stages with 10 size options for the large center distance variant, they cover a wide range of technical parameters: nominal torques up to 109,000 Nm, power ratings matching diverse industrial needs, and transmission ratios optimized for specific application requirements. Reinforced high-capacity bearings further enhance load absorption capability, adapting to the fluctuating forces in heavy-duty operations.
Equipped with advanced non-contacting labyrinth seals and optimized oil pressure lubrication systems, the gear units prevent lubricant leakage and ensure consistent performance even in dusty, humid, or corrosive environments. Their modular design supports horizontal, vertical, and upright mounting configurations, along with easy integration via dedicated flanges, simplifying installation, maintenance, and future upgrades.
Widely applied in container cranes, bridge cranes, offshore equipment, and large-scale wastewater treatment aerators, these gear units embody FLENDER’s technological leadership. By combining large center distance flexibility, robust construction, and high efficiency, they provide cost-effective and sustainable drive solutions for industries requiring heavy-load transmission and structural adaptability.
FLENDER Reducer Helical Gear Units with Large Center Distance Models, Weights and Motor Combinations
Note: The weights refer to the reducer body (torsionally rigid welded steel housing) and may vary with accessories (e.g., auxiliary oil tanks, reinforced sealing systems) and output configurations. Motor combinations comply with FLENDER standard matching for lifting and luffing scenarios, covering IE2-IE4 efficiency classes, suitable for container cranes, bridge cranes, offshore cranes and drawworks. The transmission efficiency is ≥96%, and the rated torque range is 10,000N·m to 1,400,000N·m.
1. CHG Series (Special Gear Units for Lifting & Luffing)
| Model | Weight | Motor Combination (Power Range) |
|---|---|---|
| CHG 10 | 850kg | IE3/IE4 three-phase asynchronous motors (30-55kW); compatible with B3/B5 mounting flanges, such as Siemens 1LE1 series, designed for parallel motor-and-winding drum arrangement, with drive shafts bearing high additional forces |
| CHG 16 | 2200kg | IE3/IE4 motors (75-110kW); matching with heavy-duty crane motors, supporting frequency conversion control for stepless speed regulation, optimised for peak load resistance |
| CHG 22 | 4800kg | High-power IE4 motors (132-200kW); hollow output shaft with shrink disk connection, suitable for large drum diameters, with enhanced sealing systems for long service life |
| CHG 30 | 8500kg | IE3/IE4 motors (220-315kW); torsionally rigid design for offshore crane applications, compatible with hydraulic auxiliary drives, IP55 protection class |
2. E2HA Series (Large Axial Force Helical Gear Units)
| Model | Weight | Motor Combination (Power Range) |
|---|---|---|
| E2HA 16 | 5100kg | IE3 three-phase asynchronous motors (110-160kW); transverse positioning, design type B, rated torque 160,000N·m, dynamic axial bearing load rating 4,950kN, suitable for heavy lifting equipment |
| E2HA 20 | 7800kg | IE4 motors (160-220kW); optimised gear elements for high peak loads, reduction of mass moments of inertia, compatible with motor brackets and torque arms for stable installation |
3. Standard Cylindrical Gear Units (Large Center Distance Variant)
| Model | Weight | Motor Combination (Power Range) |
|---|---|---|
| F 40-60 (Large Center Distance) | 1200kg | IE3 motors (45-75kW); variable center distance adapted to crane requirements, high flexibility for project-specific solutions, low noise operation (≤85dB) |
| F 70-90 (Large Center Distance) | 3500kg | IE4 motors (90-132kW); above-average service life, optimised sealing systems, suitable for casting cranes and tower slewing cranes |
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