Hydraulic Motor

Your Professional Hydraulic Motor Supplier

Our goal is to become your true partner in the field of hydraulic motor in China. Fujian Okairui Fluid Technology Co., Ltd. (hereinafter referred to as Okairui), founded in 2013, the core members of the company have rich experience in technology, management and entrepreneurship. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

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Why Choose Us

Product application

Our products include hydraulic pumps, hydraulic motors, hydraulic valves and hydraulic systems, which are widely used in construction machinery, agricultural machinery, marine equipment, offshore applications and other industries.

Our customization

Our products are the ideal choice for various industries, and we can also customize them according to the specific needs of customers for different applications.

Our services

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Advantages of Hydraulic Motor

High power density: Hydraulic motors deliver high power output relative to their size and weight, making them well-suited for applications where space and weight constraints are significant considerations.

Precise control: Hydraulic systems provide precise control over motor speed and torque, allowing for smooth and accurate operation of machinery and equipment. This level of control is particularly advantageous in applications requiring fine adjustments and precise positioning.

Robustness and durability: Hydraulic motors are renowned for their robust construction and durability, capable of withstanding harsh operating conditions such as high temperatures, heavy loads, and frequent use. This reliability contributes to minimal downtime and reduced maintenance costs for users.

Versatility: Hydraulic motors can be easily integrated into a wide range of systems and configurations, offering flexibility in design and application. Whether used in stationary industrial equipment or mobile machinery, hydraulic motors provide adaptable solutions to diverse operational needs.

Types of Hydraulic Motor

External gear hydraulic motors: This gear mechanism features a hydraulic motor with two gears: The driven gear and the idle gear. The driven gear is typically attached to the output shaft via a key. High-pressure oil circulates around the gear tips within the motor, entering through the sides and exiting through the outlet port.

Internal gear type hydraulic motors: Internal gear motors share many features with external gear motors but are distinguished by their smoother operation. Unlike external gear motors, which can produce vibrations and noise, internal gear motors operate more quietly. They typically include one external gear that meshes with a larger internal gear.

Vane hydraulic motors

Hydraulic motors function by generating an imbalance through pressure, which causes the shaft to rotate. In vane motors, this imbalance occurs due to variations in the hydraulic pressure exerted on the vane area. Vane motors are designed with hydraulic balancing to avoid sideloading the shaft by the rotor.

Radial piston hydraulic motors

The radial-piston hydraulic motor converts fluid pressure into mechanical rotation. Central to its design is a directional valve with two fluid lines: One for intake and one for drainage.

Axial piston hydraulic motors

Axial piston hydraulic motors, often referred to as barrel motors, feature a drive shaft plate set at an angle relative to the motor's barrel. As fluid enters the cylinders, it moves the pistons, causing the drive shaft to rotate. Each cylinder experiences one phase of fluid intake and output per rotation.

Specification of Hydraulic Motor

Displacement	80 - 495 cm3/rev
Rotational speed range	142 - 850 rpm
Maximum pressure	From 120/175 bar through 150/280 bar (continuous/peak)
Maximum torque	178nm/860nm

Application of Hydraulic Motor

Construction

Hydraulic motors power heavy machinery such as excavators, bulldozers, and cranes in the construction industry. Their robustness and ability to generate high torque make them ideal for handling demanding tasks on construction sites.

Agriculture

In agriculture, hydraulic motors drive equipment such as tractors, harvesters, and irrigation systems. They enable precise control of machinery functions, allowing farmers to optimize productivity and efficiency in crop cultivation and management.

Manufacturing

Hydraulic motors are integral to manufacturing processes, powering machinery for metalworking, plastic molding, and assembly operations. Their consistent performance and ability to handle varying loads contribute to streamlined production processes in manufacturing facilities.

Aerospace

Hydraulic motors play a critical role in aircraft systems, powering components such as landing gear, flight control surfaces, and cargo handling mechanisms. Their reliability and durability are essential for ensuring the safe operation of aircraft in demanding aerospace environments.

Parts Of A Hydraulic Motor

Idler gear

The idler gear is a stationary gear that is not attached to the output shaft. It is only used as a guide and does not operate independently. It is forced to rotate due to its teeth interlocking with the driven gear.

Driven gear

The driven gear is attached to the output shaft and generates motion from the hydraulic fluid pressure, which is then transferred to the idler gear. The driven gear is responsible for transmitting rotational motion between the two gears.

Output shaft

Finally, the driven gear’s motion is initiated as pressure builds. Since the driven gear is attached to the output shaft, the torque created by the driven gear is transferred through the output shaft.

Rotor

The rotor is connected to the vane motor’s drive shaft. The vanes are connected to the rotor, and the fluid pressure rotates the rotor, which in turn rotates the vanes.

Vanes

The vanes are connected to the rotor, and the length of the vanes can either be uniform or variable to maintain surface contact with the vane motor’s casing or walls. The rotation of the rotor and the vanes create the torque needed to operate a given system.

Cylinder block

Cylinder blocks are found in axial piston motors. Its primary purpose is to house the pistons and ensure the rotation of the pistons and cylinders. When the cylinder completes a full rotation, it drives the pistons to perform a single stroke

Stator

The stator is standard in radial piston motors. The stator provides force for the piston and rotor, ensuring that both rotate.

Pistons

Axial and radial piston motors both contain pistons. When pressure builds up in the motor, these precision-machined bars move up and down, converting energy into mechanical power.

Installation Requirements of Hydraulic Motor

Consider the specific requirements of your application, including torque, speed, and operating conditions, to choose the appropriate hydraulic motor.

Follow the manufacturer's instructions to mount the motor securely, ensuring proper alignment and adequate support. Connect the motor to the hydraulic system, paying attention to correct hose size, fittings, and seals to prevent leaks.

Packing and Shipping of Hydraulic Motor

Packing	Wooden box
Shipping	Shipped by road, sea, rail

FAQ

Q: What is a hydraulic motor?

A: Hydraulic motors are devices that harness the power of pressurised fluids to convert hydraulic energy into mechanical motion. These ingenious machines find extensive application in various industries, from heavy machinery and manufacturing to automotive and aerospace engineering.

Q: What are the 3 most common types of hydraulic motors?

A: The primary function of a hydraulic motor is to convert hydraulic energy into mechanical power. There are three major types of hydraulic motors: gear motors, piston motors, and vane motors.

Q: What is the difference between a hydraulic motor and a normal motor?

A: If appropriately sized and operated under an approved load level, an electric motor can run for years without interruption or maintenance. On the other hand, hydraulic generators are powered by liquid fuel. However, they need routine cleaning, filter replacements, tune-ups, and fluid changes.

Q: Why would you use a hydraulic motor instead of an electric one?

A: Hydraulic motors can deliver more torque in a smaller package. An hydraulic system can also be used for many different auxiliary functions so it's convenient to have a power pack. Electric motors are more mechanically efficient but you'd need a huge one to match the same torque (comparatively).

Q: Can a hydraulic motor be used as a pump?

A: But their working principles are the same, they all rely on the change of the sealed working volume to work. In principle, it should be reversible, that is, any hydraulic pump can be used as a hydraulic motor, and any hydraulic motor can be used as a hydraulic pump.

Q: What is the difference between hydraulic motor and air motor?

A: Apparently, tons of horsepower is required to compress atmospheric air into its normal working pressure. This makes air motor components very costly to operate. As for hydraulics, the high initial cost can be often offset by low operating cost with its higher efficiency.

Q: How strong is a hydraulic motor?

A: Gears are used to reduce the shaft output speed for applications that require a lower speed. This means that the gear motor's operating pressure typically is very low, ranging between 100 and 150 bar. In addition, some of the more modern gear motors operate at, up to, 250 bar continuous pressure.

Q: What are hydraulic motors best used for?

A: Applicable in road making, agricultural machinery, mining machines, food industry machinery, swing drives, fan drives, vibration machines, hydraulic transmissions and so on. Options- Port, shaft and high-pressure ports, integrated valves. Advantages- high initial torque, durable, smooth functioning, etc.

Q: Is a hydraulic motor powered by wind?

A: The wind energy obtained by the wind turbine is transferred to the hydraulic motor through the hydraulic pump, which in turn drives the generator to rotate and generate electricity.

As one of the leading hydraulic motor manufacturers and suppliers in China, we warmly welcome you to wholesale hydraulic motor for sale here from our factory. All our products are with high quality and competitive price.

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