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china AT227318 AT139444 OILGEAR Piston Pump Hydraulic Pump AT187383 - Tonkee Machinery

Hydraulic Pump/

china AT227318 AT139444 OILGEAR Piston Pump Hydraulic Pump AT187383

AT227318 Hydraulic Pump

Standard: John Deere Hy-Gard™ hydraulic oil (or equivalent mineral-based oils with anti-wear additives, ISO VG 46/68).

Temperature Range: -15°C to +80°C (standard NBR seals); -10°C to +110°C (FKM seals).

  • Product Details

AT227318 Hydraulic Pump

Displacement 12.5 cm³/rev (calibrated to John Deere OEM standards) Fixed volume of hydraulic oil delivered per shaft rotation—defines flow rate at a given speed (no adjustability, ideal for constant-load tasks).
Pressure Ratings – Continuous Operating Pressure: 16 MPa (160 bar)

– Intermittent Pressure: 20 MPa (200 bar)

– Peak Pressure (≤3 seconds): 24 MPa (240 bar)

Medium-pressure tolerance for typical agricultural tasks (e.g., lifting plows, operating loaders) without excessive wear.
Speed – Rated Speed: 1,800 rpm (matches John Deere tractor PTO speeds)

– Maximum Speed: 2,500 rpm

– Minimum Speed: 500 rpm

Compatible with tractor power take-off (PTO) or engine-driven systems; minimum speed prevents cavitation (air bubble formation).
Flow Rate – At 1,800 rpm: 22.5 L/min (12.5 cm³/rev × 1,800 rpm ÷ 1,000)

– At 2,500 rpm: 31.25 L/min

Linear flow output—critical for consistent actuator speed (e.g., smooth loader lifting/lowering).
Efficiency – Volumetric Efficiency: ≥88% (at rated pressure/speed)

– Mechanical Efficiency: ≥82%

– Total Efficiency: ≥72%

Balances energy use and performance; sufficient for non-high-precision agricultural applications.
Weight ~7.5 kg Lightweight for easy installation/retrofit in tractor engine bays or implement mounts.

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