Hydraulic Motor Assembly ONA-N57500024 for HP6 Cone Crusher Spare Parts

Product Overview

The hydraulic motor assembly ONA-N57500024 is a precision component designed for the hydraulic circuit of cone crushers suitable for HP6 models. It drives the adjustment ring rotation, enabling accurate closed side setting (CSS) control. This CSS adjustment directly influences product size, crushing efficiency, and liner wear uniformity. A reliable hydraulic motor ensures smooth setting changes and effective tramp release protection.

Product Advantages

Direct replacement – no modifications required

The ONA-N57500024 hydraulic motor assembly is manufactured to match the original mounting dimensions, porting, and shaft configuration of the HP6 crusher. It bolts directly into the existing hydraulic circuit, eliminating the need for adapters, machining, or welding. This simplifies installation, reduces downtime, and lowers labor costs.

Precision‑machined to meet original specifications

Every critical dimension – including housing bore, spline profile, flange thickness, and mounting hole pattern – is CNC‑machined to the same tolerances as the OEM component. We use certified alloy steel forgings and advanced machining processes to ensure perfect alignment with the adjustment ring gear drive, preventing premature wear and hydraulic leakage.

Pressure‑tested and 100% dimensionally inspected before shipment

Each hydraulic motor assembly undergoes a full functional test on a dedicated test bench. We verify flow rate, torque output, and pressure holding capacity across the entire operating range. In addition, a coordinate measuring machine (CMM) checks all geometric tolerances. Only units that pass both tests receive the ONA quality seal.

Compatible with the HP6 hydraulic system

The motor is engineered to work seamlessly with the HP6’s hydraulic power unit, clamping cylinders, and tramp release cylinders. Its displacement and speed characteristics are optimized for the crusher’s closed side setting (CSS) adjustment logic. This ensures smooth, precise setting changes and reliable overload protection without any control system modification.

Reduces downtime and maintains consistent crushing performance

A failing hydraulic motor often leads to erratic CSS control, increased liner wear, and unplanned shutdowns. By replacing it with ONA’s precision‑built motor, you restore accurate setting adjustment, stabilize product grading, and eliminate the risk of motor‑related breakdowns. Our rigorous pre‑shipment testing significantly reduces the chance of early field failure, keeping your HP6 crushing at full capacity.

Backed by ONA’s quality system and global logistics

We stock ready‑to‑ship units in our warehouse, enabling fast dispatch for emergency replacements. Each motor is packed in a heavy‑duty wooden case with anti‑rust protection to withstand sea or air freight. For large orders or custom projects, we can also manufacture motors based on your own drawings or performance specifications.

Applications

The ONA-N57500024 hydraulic motor assembly is engineered specifically for HP6 cone crushers operating in secondary, tertiary, and quaternary crushing stages across a wide range of industries.

Hard rock mining and mineral processing: Suitable for secondary, tertiary, and quaternary crushing of iron ore, copper ore, granite, and basalt. The motor delivers precise closed side setting (CSS) adjustment under continuous high load, enabling consistent product sizing and efficient liner wear compensation.

Aggregate and quarry production: Ideal for producing cubical aggregates for road base, concrete, and asphalt. Reliable motor performance reduces recirculating load, stabilises product gradation, and minimises unplanned downtime.

Mobile, portable, and recycling plants: Handles frequent start‑stop cycles and tramp iron events in track‑mounted or wheeled HP6 crushers, as well as concrete and asphalt recycling. Compact design and robust response ensure smooth integration with automated control systems.

FAQ

Is the ONA-N57500024 hydraulic motor assembly compatible with HP6 cone crushers only?

Yes, the ONA-N57500024 is specifically designed for HP6 cone crushers. However, it may also fit other HP series models after verifying mounting dimensions and hydraulic flow requirements. We recommend checking your crusher’s serial number and original motor part number before ordering.

How often should the hydraulic motor assembly be replaced or serviced?

Under normal 24/7 operation, the hydraulic motor can last 15,000‑20,000 hours. Common signs of wear include slow CSS adjustment, unusual noise, or hydraulic oil leakage. Regular oil cleanliness and filter changes can significantly extend motor life. If performance drops, replace the motor promptly to avoid production loss.

Can ONA provide a complete hydraulic motor kit, including seals and hoses?

Yes, ONA can supply a full kit that includes the hydraulic motor assembly along with necessary O‑rings, seals, and hoses suitable for HP6. We also accept custom orders based on your drawings. Contact us with your requirements for a tailored solution.