A6VM107HA1T Rexroth Axial Piston Variable Motor 107cm³ 400bar

Product Overview

The A6VM107HA1T/63W-VZB370A-SK is a Bosch Rexroth A6VM series (series 63) bent-axis axial piston variable hydraulic motor designed for open and closed circuits. Featuring a precision tapered-piston rotary group, displacement is infinitely variable from Vg max to Vg min = 0. Output speed depends on pump flow and motor displacement; torque increases with differential pressure and displacement. Our A6VM107 and companion sizes A6VM80, A6VM115, A6VM170, A6VM215 are manufactured to original technical specifications, offering 100% interchangeability (flange, shaft end, and port positions fully match OEM) and 100% simulated-duty testing. They deliver high efficiency and robust performance under high pressure and variable speeds as reliable, cost-effective direct replacements for genuine Rexroth motors.

Technical Specifications 

• Model: A6VM107HA1T/63W-VZB370A-SK (series also available in A6VM80, A6VM107, A6VM115, A6VM170, A6VM215)
• Displacement Vg max: 107 cm³/rev
• Displacement Vg min: 0 cm³/rev (infinitely variable)
• Nominal pressure: 400 bar
• Peak pressure: 450 bar (intermittent)
• Maximum speed at Vg max: approx. 3550 rpm
• Maximum speed at reduced displacement: up to approx. 5600 rpm (subject to maximum permissible inlet flow)
• Maximum inlet flow: approx. 380 L/min
• Theoretical torque (Δp = 400 bar, Vg max): approx. 681 Nm
• Control: HA1T automatic high-pressure related control (with specific option; pressure-dependent automatic displacement adjustment)
• Direction of rotation: bidirectional (W)
• Approx. weight: 46 kg
• Design: Bent-axis axial piston variable motor for open and closed circuits

Key Technical Advantages

1. Precision bent-axis piston design and high-accuracy machining deliver superior volumetric and hydro-mechanical efficiency, high power density, and excellent starting characteristics.
2. Infinitely variable displacement down to zero provides a wide control range for both high-speed/low-torque and low-speed/high-torque operation; HA1 automatic control offers precise response ideal for load-sensing systems.
3. Optimized low-noise design combined with long-life bearings and quality materials ensures outstanding durability under continuous high-pressure duty.
4. Full dimensional and performance interchangeability plus rigorous simulated-duty testing guarantee drop-in replacement of original Rexroth units, minimizing downtime and lifecycle costs.

Application Areas

Ideal for mobile machinery, construction equipment, agricultural machinery, mining equipment, marine auxiliary drives, and industrial hydraulic systems requiring high power density and variable speed/torque. Typical uses include excavator travel/swing, crane winches, concrete pump trucks, drilling rigs, forestry machines, and closed-circuit hydrostatic transmissions.

Expert Maintenance Tips

• Verify exact match of mounting flange, shaft end (DIN 5480 spline), and port orientation before installation; avoid forced assembly that can damage seals or bearings.
• For HA1 control, maintain pilot oil cleanliness (recommended NAS 1638 Class 8 or better) and periodically check control pressure settings and response time.
• Monitor case drain pressure and temperature during commissioning and regular service; enable flushing circuit (port U) when required to prevent overheating or cavitation.
• Use matching filter elements and hydraulic fluid (HLP mineral oil per DIN 51524); record operating pressure and speed profiles to detect early efficiency decline.