AA6VM55HA1/63W-VSD520A-E Hydraulic Motor
A1: Each segment of the model corresponds to specific technical attributes: “AA” is the product series code; “6VM” indicates a bent-axis type axial piston hydraulic motor; “55” refers to the theoretical displacement (55 cm³/rev); “HA1” denotes the control method and structural details; “63W” includes the nominal operating pressure (630 bar) and supplementary design code; “VSD520A” is the variable mechanism/drive compatibility code; “E” represents special configurations (e.g., low-temperature adaptation or eco-friendly coating).
A2: Its core technical parameters include: theoretical displacement of 55 cm³/rev (cubic centimeters per revolution), nominal operating pressure of 630 bar, maximum speed typically around 2800 rpm, and approximate shaft torque of 320 N·m (calculated based on displacement and nominal pressure). It is also compatible with mineral oil and synthetic hydraulic oil that meets ISO 4413 standards.
A3: This hydraulic motor is mainly suitable for medium-duty industrial machinery and construction equipment, including small-to-medium excavators (5-15 ton class, for swing drive systems), wheel loaders (for hydraulic drive of auxiliary functions), and mining conveyors (for heavy-duty rotation drives). However, exact compatible machine models (e.g., specific excavator brands) need to be verified with the host manufacturer’s parts catalog, as compatibility depends on the machinery’s hydraulic system design.
A4: Yes, it complies with common industry OEM standards in terms of structural design, performance parameters, and material selection. It matches the dimensional requirements (e.g., mounting flange size, shaft diameter) and performance indicators (e.g., torque, speed range) of mainstream hydraulic system designs. However, when used as an OEM replacement, it is recommended to confirm compatibility with the specific host machine’s original hydraulic system parameters first.
A5: The standard operating temperature range is -20 °C to +80 °C. Due to the “E” suffix in the model, it has enhanced environmental adaptability—for example, it can withstand low-temperature environments (even down to -30 °C when using low-temperature hydraulic oil) and may have anti-corrosion treatment or eco-friendly coatings, making it suitable for harsh working conditions such as construction sites and mining areas.
A6: Typically, it comes with a 12-month warranty, which covers manufacturing defects (e.g., oil seal leakage, bearing failure) and performance deviations (e.g., insufficient torque or unstable rotation). For after-sales support, most suppliers offer technical guidance (such as installation instructions and hydraulic oil selection advice) via online channels (e.g., email or instant messaging). Additionally, orders are usually processed within 24 hours and shipped globally via international express carriers (e.g., DHL, FedEx), with delivery times ranging from 3 to 7 days for major markets.
A7: Key notes include: 1) Ensure the mounting flange and shaft connection are aligned with the original machinery to avoid structural stress; 2) Use hydraulic oil that meets ISO 4413 standards and replace the oil and filter regularly to prevent oil contamination from damaging internal components; 3) Do not exceed the nominal operating pressure (630 bar) or maximum speed (2800 rpm) during use to avoid shortened service life; 4) If installation issues occur, contact the supplier’s technical team for guidance in a timely manner instead of modifying the motor structure without authorization.
Tonkee Machinery Logo









