AP300/63 D 218 Bucher High Pressure Gear Pump

Product Overview

The AP300/63 D 218 (and AP300/63 S 218) is a high-pressure external gear pump from the Bucher Hydraulics AP300 series. Featuring an aluminum body with cast iron covers, it delivers high volumetric efficiency, low pulsation and long service life. With a displacement of 63 cm³/rev, continuous pressure of 180 bar and peak pressure of 240 bar, the pump offers direct bolt-on interchangeability with OEM units and undergoes 100% simulated duty testing for reliable performance in construction, agricultural and mobile hydraulic systems.

Technical Specifications

• Models: AP300/63 D 218 / AP300/63 S 218 (AP100 / AP200 / AP300 series)
• Pump type: High-pressure external gear pump (aluminum body)
• Displacement: 63.0 cm³/rev
• Continuous pressure (P1): 180 bar
• Intermittent pressure (P2): 210 bar
• Peak pressure (P3): 240 bar
• Minimum speed: 550–700 rpm
• Maximum speed: 2500–3000 rpm
• Weight: Approx. 9.2 kg
• Rotation: D = Clockwise; S = Counter-clockwise
• Other: NBR seals; flanged ports available; single or multiple configurations supported

Key Technical Advantages

1. True drop-in interchangeability: Manufactured to OEM dimensional and porting standards for bolt-on replacement without modifications.
2. High volumetric efficiency with hydraulic compensation: Optimized design minimizes internal leakage for stable, efficient output.
3. Lightweight high-strength construction: Aluminum body combined with cast iron covers provides low weight and high pressure capability.
4. Low pulsation and long service life: Precision gears and bearings ensure smooth operation and extended durability.
5. 100% simulated duty testing: Full pressure, flow, noise and endurance verification before shipment ensures ready-to-install reliability.

Application Areas

• Construction machinery auxiliary hydraulic systems
• Agricultural machinery and tractors
• Loaders, forklifts and material handling equipment
• Sweepers and hydraulic lifting devices
• Open-circuit systems requiring compact high-pressure gear pumps

Expert Maintenance Tips

• Confirm rotation direction (D clockwise or S counter-clockwise) and flange/port compatibility before installation; use recommended hydraulic oil and maintain proper cleanliness.
• Start at low speed unloaded; check for leaks and noise. Avoid simultaneous maximum pressure and maximum speed.
• Regularly inspect seals and bearings; ensure unrestricted suction lines to prevent cavitation.
• Keep oil temperature and viscosity within recommended ranges; avoid over-pressure operation.
• For special codes (such as series 218), verify the complete order code and consult technical support.