H1P130 Danfoss Axial Piston Pump 130cc 450bar Closed Circuit

Product Overview

The H1P130 (and the broader H1P series including H1P078, H1P089, H1P100, H1P115, H1P147 and H1P210) is a high-performance closed-circuit variable-displacement axial piston pump from Danfoss (formerly Sauer-Danfoss). Featuring a cradle swash-plate design, the H1P130 delivers 130 cm³/rev displacement with a maximum working pressure of 450 bar and maximum pressure of 480 bar. It is engineered for mobile hydrostatic transmissions. The pump is fully dimensionally and functionally interchangeable with genuine Danfoss units, allowing drop-in replacement without modification of mounting flange, shaft or piping. Every unit undergoes 100% simulated operating-condition testing to ensure volumetric efficiency, pressure response and service life meet original Danfoss standards.

Technical Specifications 

• Model: H1P130 (series covers H1P078 / H1P089 / H1P100 / H1P115 / H1P130 / H1P147 / H1P210)
• Displacement: 130.0 cm³/rev (H1P130); series range approx. 78–211.5 cm³/rev
• Maximum working pressure: 450 bar
• Maximum pressure: 480 bar
• Rated speed: 3200 rpm
• Maximum speed: 3400 rpm
• Minimum speed: 500 rpm (internal/external charge supply)
• Control type: Electric Displacement Control (EDC, typical A5 configuration, 12 V/24 V with manual override)
• Rotation: Configurable left-hand (L) or right-hand
• Mounting flange: SAE D 4-bolt flange (115/130 frame)
• Weight (dry, without PTO/filter): approx. 83 kg (H1P115/130)
• Case oil volume: approx. 2.0 L
• Charge pressure range: 16–34 bar
• Fluid recommendations: Per Danfoss guidelines (recommended viscosity 12–80 mm²/s)

Key Technical Advantages

1. Cradle swash-plate and precision rotating group enable bi-directional flow by tilting the swash plate across zero displacement, delivering high volumetric efficiency and low pressure pulsation.
2. Optimized main bearings and valve plate combined with high-performance shaft seals provide excellent durability under continuous high-pressure and high-speed operation.
3. Electric Displacement Control (EDC) offers precise flow matching, fast response and PLUS+1 compatibility, with optional pressure limiters and high-pressure relief protection.
4. Full dimensional interchangeability with original Danfoss interfaces ensures drop-in replacement, minimizing downtime and retrofit costs on existing equipment.

Application Areas

• Construction machinery (skid-steer loaders, trenchers, asphalt pavers, vibratory rollers)
• Agricultural and turf equipment (mowers, sweepers, windrowers)
• Industrial and mobile systems (aerial lifts, mobile hydraulic power units)
• Other medium-to-high pressure closed-circuit hydrostatic transmissions requiring efficient variable displacement and reliable control

Expert Maintenance Tips

1. Always pre-fill the pump case with clean hydraulic fluid and bleed air from the highest case drain port before start-up to prevent dry-running damage to the swash plate and valve plate.
2. Maintain charge pressure within the 16–34 bar range; insufficient charge pressure reduces control response and volumetric efficiency.
3. Monitor case pressure (rated ≤ 3 bar, maximum ≤ 5 bar); elevated case pressure is a primary cause of premature shaft-seal failure.
4. Use hydraulic fluid meeting Danfoss specifications and maintain proper system cleanliness. Replace filters and oil after initial run-in for maximum pump and system life.