Bosch Rexroth hydraulic motors for the Doosan Engineering equipment 170403-00077 2401-6292A 400702-00006A 401-00393B 60623143A

Doosan (and its earlier Doosan Infracore lineage) doesn't manufacture every hydraulic component in-house. Like most heavy equipment OEMs, it sources major hydraulic subsystems — pumps, motors, valves — from specialist suppliers, and Bosch Rexroth is one of the largest hydraulics manufacturers in the world. That relationship shows up in two ways on a Doosan machine: as an original-equipment component installed at the factory, or as a Rexroth-built unit specified as an approved aftermarket replacement.

Types of Bosch Rexroth Hydraulic Motors Found in Doosan Equipment

Not all hydraulic motors are built the same way, and Doosan machines use different Rexroth motor families depending on the job the motor is doing.

Axial Piston Motors (A6VM and A2FM Series)

These are the workhorses of excavator travel and swing circuits. The **A6VM series** is a variable-displacement, bent-axis piston motor — displacement can be swiveled from maximum down to zero, which lets a single motor deliver both high starting torque and high top-end speed. That's exactly the behavior an excavator's travel drive needs: strong torque to get a tracked machine moving, then speed once it's rolling. The **A2FM series** is the fixed-displacement counterpart, often used where a constant torque-to-speed ratio is preferred, such as certain swing or auxiliary drive applications.

Key Benefits of Rexroth Motors in This Application

Efficiency and Fuel Economy

Variable-displacement design means the motor isn't forcing the engine to work against a fixed ratio at all times. The system only draws the flow and pressure the task actually needs, which translates into measurable fuel savings over an operating shift — something fleet owners notice on the diesel bill long before they notice it in a spec sheet.

Durability Under Jobsite Abuse

Construction and demolition sites are hard on hydraulics: dust ingress, thermal swings, shock loading from digging into rock or debris. The piston-and-swashplate architecture used in Rexroth's A6VM/A2FM motors is specifically engineered to tolerate that kind of duty cycle, with sealed case-drain circuits and hardened piston shoes that resist wear from marginal fluid cleanliness — a real-world condition on most jobsites, however careful the maintenance program.

Precision and Controllability

Operators feel the difference in fine control — smooth swing starts and stops, predictable creep speed when tracking into a tight space. That responsiveness comes directly from the motor's control valve options (HD, HA, EP, and similar Rexroth control codes), which let the OEM tune exactly how displacement responds to pilot pressure or electronic signal.

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Q1: How do I identify the exact Rexroth motor model on my Doosan machine?

A1: Check the nameplate stamped on the motor housing itself — it will list the full Rexroth part and serial number.

Q2: What's the difference between the A6VM and A2FM series?

A2: A6VM motors are variable-displacement (the swashplate angle changes to alter torque and speed characteristics), while A2FM motors are fixed-displacement. Travel drives generally use variable-displacement motors for their combination of starting torque and travel speed; some swing and auxiliary circuits use fixed-displacement A2FM units where a constant ratio is preferred.

Q3:What is the price and delivery time of the Rexroth hydraulic motor for the Doosan Engineering equipment?

A3: The specific price and delivery time will depend on the equipment model or specific product model you provide.

Q4:How to purchase a Rexroth hydraulic motor for the Doosan Engineering equipment?

A4: You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products via various methods.