HA6V80 HYTEK Axial Piston Motor 80cc 315bar 3900rpm

Product Overview

Technical Specifications

• Model: HA6V80 (Full order codes: HA6V80HD1DFZ1039B / HA6V80HD1DFS1039B / HA6V80HD1DGP1039B)
• Series Platform: HYTEK HA6V Series (equivalent to Rexroth A6VM Series 63/71)
• Configuration: Bent-axis variable displacement axial piston motor, axial tapered piston rotary group
• Maximum Displacement Vg max: 80 cm³/rev
• Minimum Displacement Vg min: 0 cm³/rev (infinitely variable to zero)
• Rated Pressure pn: 315 bar (4500 psi)
• Peak Pressure pmax: 450 bar (6525 psi)
• Maximum Speed (at Vg max): 3900 rpm
• Maximum Speed (at reduced displacement): 6150 rpm
• Maximum Input Flow (at Vg max / rated speed): 312 L/min (82.4 gpm)
• Output Torque (at Δp = 400 bar): 509 Nm
• Volumetric Efficiency: ≥ 93% (at rated conditions)
• Overall Efficiency: ≥ 88% (at rated conditions)
• Piston Count: 9 pistons (odd-number configuration for reduced pulsation)
• Weight: Approx. 34 kg (75 lbs)
• Control Type: HD = Hydraulic pressure-related automatic displacement control
• Circuit Compatibility: Open circuit & Closed circuit
• Rotation: Bi-directional

• HA6V28: 28.1 cm³/rev, 5550 rpm max, 156 L/min max flow, 16 kg
• HA6V55: 54.8 cm³/rev, 4450 rpm max, 244 L/min max flow, 26 kg
• HA6V80: 80 cm³/rev, 3900 rpm max, 312 L/min max flow, 34 kg
• HA6V107: 107 cm³/rev, 3550 rpm max, 380 L/min max flow, 47 kg
• HA6V160: 160 cm³/rev, 3100 rpm max, 496 L/min max flow, 64 kg

• HA6V = HYTEK bent-axis variable piston motor series
• 80 = Size/displacement (80 cm³/rev)
• HD1 = Control type (HD = hydraulic pressure-related auto-variable, Series 1)
• D = Flange mounting type
• F = Output shaft type (spline shaft)
• Z = Shaft seal material (FKM fluoroelastomer)
• 1039B = Specific configuration code (port orientation, auxiliary functions)

• HA6V80HD1DFZ1039B: Standard flange + F-type spline output shaft + FKM shaft seal
• HA6V80HD1DFS1039B: Standard flange + F-type spline output shaft + alternate seal/rotation configuration
• HA6V80HD1DGP1039B: Standard flange + G-type output shaft (plain/keyed shaft) + alternate seal configuration

Key Technical Advantages

Precision Bent-Axis Design & Manufacturing

Wide-Range Infinitely Variable Displacement & High Power Density

9-Piston Low-Pulsation Low-Noise Design

Long-Life Bearing & High-Reliability Seal System

Flexible Control Options & Integration Capability

Application Areas

• Wheeled Excavator Travel Drive: HA6V80/107 integrated into wheel hub reducers for travel drive, providing high-torque low-speed crawling and high-speed roading capability. HD control automatically adapts to varying terrain resistance
• Road Roller Vibration Drive: HA6V80 drives the vibration drum eccentric mechanism, with wide-range variable displacement enabling precise adjustment of vibration frequency and amplitude
• Crane Hoisting Drive: HA6V107/160 for winch hoist motors in lifting applications, delivering high torque output and precise low-speed control for smooth load lifting and positioning
• Aerial Work Platforms: HA6V28/55/80 for scissor lift and boom lift travel drive and platform rotation drive systems
• Cotton Picker Agricultural Equipment: HA6V107/160 for large cotton picker travel drive and harvesting head hydraulic drive systems
• Tunnel Boring & Shield Machines: HA6V160 for propulsion systems and cutterhead drive auxiliary hydraulic circuits
• Industrial Hydraulic Drives: Suitable for machine tool spindle drives, rolling mill table drives, marine deck machinery, and other industrial power transmission applications

Expert Maintenance Tips

• Installation Precautions: The HA6V Series uses flange mounting. Ensure precise alignment between the motor output shaft and the gearbox input, with spline fit clearances conforming to ISO standards. Pre-fill the motor housing with clean hydraulic fluid before startup — dry starting will cause irreversible damage to the piston-cylinder assembly and valve plate within seconds. The case drain port (port T) must be plumbed directly back to the reservoir with a maximum backpressure of 1.5 bar.
• Hydraulic Fluid Requirements: Use ISO VG 32-68 anti-wear hydraulic fluid (mineral oil based). Fluid cleanliness must meet ISO 4406 18/16/13 minimum. Maintain fluid temperature between 10°C and 60°C (short-term up to 80°C); during cold starts, fluid temperature must not be below 10°C — perform low-speed warm-up if necessary. Optimum operating viscosity range: 16-36 mm²/s.
• HD Control Commissioning: The HA6V80HD1 type employs hydraulic pressure-related automatic variable control. Control oil is internally sourced from the motor’s high-pressure side (port A or B), requiring no external control lines. Minimum operating pressure for reliable control is 30 bar. For variable control at pressures below 30 bar, an auxiliary pressure of at least 30 bar must be applied at port G via an external check valve. Note that pressures up to 500 bar may occur at port G.
• Case Drain & Flushing: Regularly monitoring case drain volume is essential for assessing internal wear condition. When case leakage exceeds 50% of the initial baseline value, accelerated wear of the piston-cylinder assembly or valve plate is indicated, necessitating teardown inspection. For closed-circuit applications, integrating a flushing valve is recommended to maintain system fluid cleanliness and ensure effective heat dissipation.
• Preventive Maintenance Schedule: Inspect shaft seal condition and case leakage volume every 2,000 operating hours. Check bearing clearance and piston wear every 5,000 hours or annually, whichever occurs first. Replace hydraulic fluid and suction strainer element every 2,000 hours or annually. Oil particle counting analysis technology can detect abnormal wear patterns in advance, preventing major failures.