KAYABA Series Hydraulic Motors
5 month ago
Product details
KAYABA Marine Hydraulic Motors
KAYABA Marine Hydraulic Motors, developed by Japan's KYB Corporation (formerly Kayaba Industry Co., Ltd.), are high-performance hydraulic drive systems designed specifically for marine and offshore engineering applications. Below is an overview of their technical features, core advantages, typical applications, and representative product lines:
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I. Technical Features
1. Radial Piston Design
KYB marine hydraulic motors utilize a radial piston configuration, where pressurized oil drives pistons that transmit force via connecting rods to an eccentric shaft, enabling rotation. This design ensures high torque output across the entire speed range (including ultra-low speeds as low as 3 rpm), meeting the dynamic power demands of vessels in harsh marine conditions.
2. Variable Displacement Control
Certain models (e.g., the HYDROSTAR series) incorporate a built-in variable displacement mechanism. By adjusting the piston position within the cam eccentric shaft, the motor achieves stepless speed regulation while maintaining continuous torque output. For instance, in fishing vessel winch operations, it automatically adapts to load variations, enhancing operational flexibility.
3. High-Pressure Shaft Seals & Corrosion Resistance
Tailored for saltwater environments, KYB motors feature high-pressure shaft seals to prevent seawater or hydraulic oil leakage. Critical components like pistons and cylinder blocks are made from corrosion-resistant materials, extending service life.
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II. Core Advantages
1. Robust Construction
Equipped with heavy-duty bearings, the motors withstand axial and radial loads, accommodating frequent starts/stops and shock loads common in marine equipment. For example, in anchor handling systems on mining transport vessels, they deliver a maximum torque of up to26,969 Nm/bar, ensuring reliable anchor chain deployment/retrieval.
2. Installation Flexibility
Available with multiple output shaft and port configurations, the motors support side-mount, top-mount, and other flexible installation methods, simplifying retrofits in shipboard hydraulic systems. Modular design also facilitates rapid maintenance, reducing downtime.
3. Energy Efficiency
Optimized flow distribution valves and piston motion trajectories minimize internal leakage and friction losses, enhancing volumetric efficiency. The HYDROSTAR series, for instance, maintains high efficiency even at low speeds, reducing fuel consumption.
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III. Typical Applications
1. Fishing Vessel Equipment
• Winch Systems: Drive anchor chains and trawl winches with stepless speed control and precise positioning.
• Net Haulers: Provide stable torque for heavy-duty net recovery in deep-sea fishing.
2. Offshore Engineering Equipment
• Drilling Platforms: Act as rotary drive units for pipe rotation and positioning.
• Pipe-Laying Vessels: Power tensioners to control tension during submarine pipeline installation.
3. Industrial & Specialized Vessels
• Icebreakers: Deliver reliable power in sub-zero temperatures for hull icebreaking.
• Fireboats: Drive high-pressure water pumps for long-range water cannon operations.
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IV. Representative Product Lines
1. HYDROSTAR Series
• Model: HYDROSTAR Low-Speed High-Torque Motors.
• Features: Radial piston design for ultra-low-speed (3 rpm) high torque; variable displacement control; high-pressure seals for seawater lubrication.
• Applications: Fishing winches, mining vessel anchor systems, offshore platform rotary drives.
2. MRH Series
• Models: MRH-3150-PW, MRH-1500, etc.
• Features: Compact structure for 24.5 MPa continuous operation; heavy-duty bearings to withstand axial loads; MRH2 series supports dual-speed switching via displacement adjustment for high-speed rotation and low-speed high-torque modes.
• Applications: Ship steering gear, deck machinery, hydraulic cranes.
3. MAG Series
• Model: MAG-33V-550 Final Drive.
• Features: Cast iron construction with 30% longer lifespan than standard models; compatibility with Caterpillar, Komatsu, and other brands; adjustable flow/pressure parameters for varying loads.
• Applications: Excavators on engineering vessels, dredging equipment on hopper dredgers.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
4 year
Main Product:
hydraulic motor,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system