90M075 90M055 Piston Motor OVERVIEW

90M055 (55cc) and 90M075 (75cc) are fixed-displacement axial piston motors built with fixed swashplate design, fully interchangeable with Sauer Danfoss 90 series original units. Designed exclusively for closed-loop hydrostatic drive systems, they deliver stable high torque under heavy load. The motor adopts parallel piston-slipper structure, supports bidirectional rotation, and can be perfectly matched with 90 series pumps to form complete walking hydraulic circuits.

Features and Benefits

• High Pressure Resistance: Rated pressure 350bar, peak pressure up to 420bar, capable of enduring frequent impact loads on construction and farm machineryPowerSource.

• High Efficiency & Low Leakage: Precision ground valve plate and piston assembly reduce internal leakage, maintain high volumetric efficiency during long continuous operation, and lower fuel consumption.

• Heavy-Duty Structure: High-strength cast iron housing, reinforced shaft and bearing assembly, resistant to dust, vibration and harsh outdoor working conditions.

• Flexible Configuration: Multiple spline shafts, port positions and optional loop flushing valves are available for direct replacement without modifying the original installation structure.

• Stable Bidirectional Operation: Oil can flow in either A/B port, so forward and reverse rotation is smooth without pressure fluctuation.

Specifications of 90M075 90M055 Piston Motor

Applications

Packaging & Delivery

90M075 90M055 Piston Motor are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

90M075 90M055 Piston Motor FAQ:

1. What is the 90M075 90M055 Piston Motor ?

• High-strength ductile cast iron body ensures long service life under heavy loads.

• Precision-machined valve plate and piston assembly greatly reduce internal leakage.

• It can bear peak pressure up to 420 bar with stable high torque output.

• Bidirectional rotation makes it fit closed-loop walking hydraulic circuits perfectly.

• Full interchangeability with Danfoss 90 series cuts your replacement cost.
  
  

3. What is the working pressure range of 90M075 90M055 Piston Motor ?

• Rated continuous working pressure: 350 bar (5076 PSI)

• Peak intermittent pressure: 420 bar (6092 PSI)

4. Can 90M075 90M055 Piston Motor replace other brands?

• We recommend anti-wear hydraulic oil ISO VG 46 or ISO VG 68.

• Oil viscosity should stay between 16–40 mm²/s during operation.

• Use high-grade AW hydraulic oil to reduce wear and internal leakage.

• Keep oil cleanliness strictly controlled to protect piston and valve plate.

6. What is the typical speed range of 90M075 90M055 Piston Motor ?

• Max continuous speed of 90M055: 4250 rpm

• Max continuous speed of 90M075: 3900 rpm

• Stable working speed range: 800 ~ 3500 rpm

• Avoid long-time running at extreme high speed to extend service life

7. Do you provide OEM or customized services?

• Yes, we support OEM and customized services.
• We can print your brand logo on the motor housing and nameplate.
• Customize shaft splines, oil port positions and installation dimensions.

• Adjust packing and outer labels according to your requirements.

8. How can I get a quotation quickly

Please provide the following details:

• Model or displacement

• Working pressure

• Speed

• Quantity
  We will reply within 12 hours with a competitive quotation.

  
  

Certifications & Quality Assurance

90M075 90M055 Piston Motor are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

2.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

3.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

4.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.