Revised Concise Version for 4812112200 Drum Travel Motor

Part No.4812112200 is a heavy-duty variable piston travel motor, direct OEM replacement for Dynapac CA500D, CA610D and CA610PD single drum compactors. Custom configurations are available, including adjusted hydraulic ports, SAE mounting flanges, reinforced seals and variable displacement structures. Equipped with wear-resistant piston groups, heavy-duty bearings and high-pressure multi-lip seals, it maintains stable power output under continuous vibration, heavy torque and frequent pressure shocks during compaction. Fully interchangeable with original Rexroth motors, all dimensions, ports, flanges and splines match 1:1 for plug-and-play installation without extra machining or pipe modification.

The 4812112200 hydraulic motor is a compact high-torque drive unit for medium-heavy compactors, delivering steady traction for front steel drums of 17.2–21 ton Dynapac rollers. It runs at a rated working pressure of 320 bar with a 380 bar peak intermittent pressure, suitable for long-hour heavy-load construction. Widely used in highway subgrade, asphalt pavement and municipal earthwork, it features excellent shock resistance and long service life under persistent vibration and static loads. As the core drum traction component, it adopts a solid cast housing, reinforced output bearings and an integrated fail-safe parking brake, resisting frequent pressure surges to adapt to harsh road construction environments.

This travel motor supports multiple custom options: modified splines, heavy-duty seal kits, upgraded Hall speed sensors and adjusted control valves, perfectly matching the original main hydraulic pump of CA500/CA610 series. Customized models eliminate redundant adapters and connect directly to the drum planetary gearbox via precise spline and port matching. It is the optimal traction power solution for medium single-drum rollers with limited drum installation space and modular hydraulic chassis, widely applied in highway, municipal and water conservancy infrastructure projects.

Q: What machine does the 4812112200 drum motor fit?

A: This OEM part 4812112200 is exclusively compatible with Dynapac CA500D, CA610D and CA610PD single drum vibratory rollers. It acts as the front drum hydraulic drive motor for medium and heavy-duty road compaction equipment.

Q: Is this 4812112200 drum motor a direct drop-in replacement for the original unit?

A: Yes. All SAE mounting flanges, internal splines, bolt positions and hydraulic port dimensions are 1:1 OEM matched. No cutting, modification or pipe adjustment is required for direct installation.

Q: What is the working pressure and performance rating of this 4812112200 drum motor?

A: It features 320 bar rated working pressure and 380 bar peak pressure, with stable high-torque output. It fully adapts to full-load compaction, steep slope climbing and long-hour continuous vibration working conditions of Dynapac CA500 and CA610 rollers.

Q: Does this 4812112200 motor match the original machine hydraulic system?

A: Yes. It perfectly matches the original supporting hydraulic pump of Dynapac CA500/CA610 series, forming a complete and synchronized closed-loop travel drive system for stable drum driving performance.

Q: Does this 4812112200 drum motor come with a built-in parking brake and sensor?

A: Yes. The motor is integrated with a fail-safe hydraulic parking brake and factory Hall-effect speed sensor. It fully meets the original machine's safety locking, slope parking and speed monitoring requirements.

Q: Can you provide customized specifications for this drum motor?

A: Yes. Custom internal spline parameters, upgraded reinforced seal kits, port adaptations and sensor wiring configurations are available to fit special installation and harsh construction conditions.

Q: What hydraulic oil is recommended for the 4812112200 drum motor? What is the maintenance cycle?

A: Use ISO VG46 or VG68 anti-wear hydraulic oil. Regular oil inspection every 500 working hours; complete oil replacement and seal checking every 2000 working hours to ensure stable hydraulic performance.

Q: How to solve common motor oil leakage and overheating issues?

A: Retighten flange and port bolts first if oil leakage occurs. Replace professional high-pressure seal kits if leakage persists. Motor overheating is mainly caused by deteriorated oil or insufficient oil volume; replace hydraulic oil and check internal component wear timely. Unauthorized internal disassembly is not recommended.

Q: What is the warranty policy for this 4812112200 Dynapac drum motor?

A: We offer a 12-month factory warranty. Free technical support and replacement parts are provided for non-human damage under standard installation and normal working conditions.