90R100 KA1BC60R4T2E03GBA323224 Sauer Danfoss Axial Piston Pump 100cc 450bar

Product Overview

The 90R100 KA1BC60R4T2E03GBA323224 is a Sauer Danfoss (now Danfoss Power Solutions) Series 90 closed-circuit axial piston variable displacement pump with a displacement of 100 cm³/rev, engineered for high-pressure hydrostatic drive systems in mobile machinery and industrial applications. The pump employs a parallel axial piston/slipper design with a tiltable cradle swashplate, enabling infinitely variable displacement from zero to maximum. Flow direction is reversed by tilting the swashplate past neutral to the opposite side. An integral charge pump supplies replenishing and cooling oil flow to the closed loop, as well as control fluid flow for the pump’s displacement control system.

Every unit is manufactured to exact Danfoss OEM dimensional and interface specifications, ensuring true drop-in interchangeability with the original pump. Each pump undergoes 100% simulated operating condition testing before shipment, covering rated pressure loading, displacement response, and charge pressure retention — guaranteeing install-and-run reliability.

Technical Specifications 

• Model: 90R100 KA1BC60R4T2E03GBA323224

• Series: Sauer Danfoss Series 90 (Closed Circuit)

• Rotation: Clockwise (R — Right Hand)

• Displacement: 100 cm³/rev (6.10 in³/rev)

• Rated Working Pressure: 450 bar (6,525 psi)

• Maximum Peak Pressure: 480 bar (6,960 psi)

• Rated Speed: 3,300 rpm

• Maximum Speed: 3,650 rpm

• Theoretical Flow at Rated Speed: 330 L/min (87 US gal/min)

• Control Type: EDC (Electronic Displacement Control), Weather-Pack connector, annular porting, dual coil, 14–85 mA

• Charge Pump Displacement: 20 cc/rev

• Charge Pressure Setting: 20 bar

• Charge Pressure Relief: 20 bar

• High Pressure Relief (Port A/B): 170 bar / 2,460 PSI

• Mounting Flange: SAE-A with 9-teeth coupling

• Shaft Option: F1 splined shaft, 13 teeth, pitch = 8/16

• End Cap Ports: Side ports

• Filtration: Suction filtration

• Theoretical Torque: 1.59 Nm/bar (970 in·lb/1000 psi)

• Weight: Approx. 45–56 kg (depending on control configuration)

• Mass Moment of Inertia (internal rotating parts): 0.015 kg·m² (0.356 lb·ft²)

Key Technical Advantages

1. Parallel Axial Piston/Slipper Design: The parallel piston-and-slipper arrangement combined with a tiltable cradle swashplate enables stepless displacement variation while minimizing lateral forces on the pistons. This reduces eccentric wear between the cylinder block and pistons, delivering volumetric efficiency exceeding 94% and extended service life.

2. High Power Density in a Compact Package: Delivers 450 bar rated pressure at 3,300 rpm within a 100 cc frame size. The compact, lightweight construction suits mobile machinery with strict installation envelope and weight constraints.

3. Integrated Charge Pump System: A 20 cc/rev charge pump is integrated into the pump housing, providing system replenishing oil, cooling oil flow, and control fluid without external charge pump piping — simplifying hydraulic circuit design and reducing potential leak points.

4. Low Noise and Low Ripple Design: Optimized valve plate and swashplate geometry reduce output flow ripple to as low as 5%, effectively lowering system noise and pressure pulsation for improved operator comfort and extended component life.

5. High-Strength Integrated Cast Housing: The integrated cast housing is engineered to withstand mechanical shock, vibration, and temperature fluctuations encountered in construction sites and agricultural environments, ensuring structural reliability under demanding operating conditions.

6. PLUS+1™ Compatible Control System: Supports PLUS+1™ compliant controls and sensors, facilitating integration into modern electro-hydraulic systems for precise remote control and condition monitoring.

Application Areas

• Agriculture: Combine harvesters, self-propelled forage harvesters, high-horsepower tractor hydrostatic drive systems

• Construction: Single-drum and double-drum road compactors, asphalt pavers, cold planers

• Material Handling: Skid steer loaders, telehandlers

• Forestry: Timber harvesters, forwarders

• Mining: Underground drilling rigs, mine haul truck hydraulic drives

• Specialty Vehicles: Concrete mixer truck travel drives, street sweepers

• Industrial Hydraulics: High-pressure closed-loop test stands, metallurgical equipment

Expert Maintenance Tips

1. System Flushing Before Installation: Before installing the pump, thoroughly flush hydraulic lines and replace all system filter elements. Ensure the reservoir, hoses, valves, fittings, and heat exchanger are clean and free of contamination.

2. Charge Pressure Verification: When the pump is equipped with an auxiliary mounting pad, the charge pump cover must be correctly installed with the O-ring properly seated to prevent charge pressure loss. Confirm the charge pressure setting is 20 bar before startup.

3. Initial Start-Up Bleeding: Pre-fill the pump housing with clean hydraulic fluid before first start. Run the pump at minimum pressure and idle speed for 2–3 minutes, then gradually apply load once the charge pressure gauge reading stabilizes.

4. EDC Electrical Connection Check: This model uses EDC (Electronic Displacement Control). Verify correct polarity of the dual coil connections and confirm the control current range of 14–85 mA. During commissioning, use a current meter to monitor the control signal and ensure displacement response matches system commands.

5. Fluid Cleanliness Management: Series 90 pumps require high fluid cleanliness. Recommended system filtration: β10 ≥ 10 for charge filtration and β3 ≥ 2 for suction filtration. Monitor fluid particulate contamination regularly and replace filter elements every 500 operating hours or 6 months.

6. Extended Shutdown Protection: For equipment idle longer than 30 days, start the pump once per month and run unloaded for 10 minutes to prevent oil film breakdown between pistons and cylinder block, which can cause start-up wear.