H1P100RBAA5C3ND3HC3H6L45L45DM30PN Danfoss Piston Pump 100cc

Product Overview

The H1P100RBAA5C3ND3HC3H6L45L45DM30PN is a Danfoss (formerly Sauer-Danfoss) H1P Series size 100 closed-circuit swashplate-type axial piston variable displacement pump with a nominal displacement of 101.7 cm³/rev (6.21 in³/rev), maximum working pressure of 450 bar (6527 psi), maximum peak pressure of 480 bar (6962 psi), rated speed of 3300 rpm, maximum speed of 3800 rpm, theoretical flow of 335 L/min (88.5 US gal/min), and weight of approximately 62 kg. The pump employs Danfoss H1 Series signature cradle swashplate design, specifically engineered for closed-circuit hydrostatic transmission systems, achieving flow direction reversal by simply tilting the swashplate to the opposite side of its zero-displacement position, eliminating the need for additional directional valves and simplifying system plumbing layout.

The model code decodes as follows: “H1P” represents the H1 Series variable pump; “100” denotes the 100 frame size (101.7 cm³/rev maximum variable displacement); “R” indicates right-hand rotation (clockwise, viewed from shaft end); “B” specifies endcap and filtration option codes; “AA5” specifies control configuration (electric proportional control, 12V, with manual override); “C3” specifies control option refinement code; “N” specifies no auxiliary mounting pad; “D3” specifies endcap and port configuration codes; “H” specifies mounting flange type (ISO 3019-1 flange 127-4, i.e., SAE-C); “C3” specifies charge pump and filtration configuration; “H6” specifies auxiliary mounting pad type (flange 127-4, SAE-C, 14 teeth 12/24 coupling); “L45L45” specifies tandem pump front and rear pressure limiter settings (450 bar pressure limiter, 480 bar high-pressure relief valve setting); “DM30” specifies charge pressure setting (30 bar); “PN” specifies special configuration codes; “NNN-NNN” specifies factory-reserved positions.

The H1P100 features an SAE-C four-bolt mounting flange (ISO 3019-1 flange 127-4), 23-tooth ANSI B92.1 splined shaft (16/32 DP), SAE standard port configuration, and M14 case drain ports. The pump’s mounting flange, shaft specifications, and port layouts conform to Danfoss H1P Series size 100 standards, enabling drop-in interchangeability with same-series H1P089, H1P115, and H1P130 models.

The H1P100 series is widely deployed in closed-circuit hydraulic systems for skid steer loaders, trenchers, asphalt pavers, aerial work platforms, turf care equipment, vibratory rollers, agricultural machinery, and material handling equipment.

Every H1P100RBAA5C3ND3HC3H6L45L45DM30PN undergoes 100% simulated duty-cycle testing prior to shipment — covering pressure holding, flow output, control response, and internal leakage — ensuring complete drop-in interchangeability with original Danfoss products without installation or plumbing modifications.

Technical Specifications

• Model: H1P100RBAA5C3ND3HC3H6L45L45DM30PN

• Brand: Danfoss (formerly Sauer-Danfoss)

• Series: H1P Series size 100

• Pump Type: Closed-circuit swashplate axial piston variable displacement pump (cradle swashplate design)

• Nominal Displacement: 101.7 cm³/rev (6.21 in³/rev)

• Maximum Working Pressure: 450 bar (6527 psi / 45 MPa)

• Maximum Peak Pressure: 480 bar (6962 psi)

• Rated Speed: 3300 rpm

• Maximum Speed: 3800 rpm

• Theoretical Flow at Rated Speed: 335 L/min (88.5 US gal/min)

• Control Type: Electric proportional control (12V, with manual override)

• Pressure Limiter Setting: 450 bar (L45) || High-Pressure Relief Valve Setting: 480 bar

• Charge Pressure Setting: 30 bar (DM30)

• Direction of Rotation: Right-hand (clockwise, viewed from shaft end)

• Mounting Flange: ISO 3019-1 flange 127-4 (SAE-C four-bolt)

• Input Shaft: 23-tooth splined shaft (ANSI B92.1, 16/32 DP)

• Auxiliary Mounting Pad: SAE-C flange 127-4 (14 teeth, 12/24 coupling)

• Case Drain Ports: M14 interface

• Seals: NBR (Nitrile)

• Housing Material: Cast iron

• Weight: Approx. 62 kg

• Case Pressure (Rated): 3.0 bar (44 psi)

• Case Pressure (Maximum): 5.0 bar (73 psi)

• Charge Pump Inlet Pressure (Rated): 0.7 bar absolute

• Charge Pump Inlet Pressure (Maximum): 4.0 bar absolute

• Charge Pressure Range: 16–35 bar (232–508 psi)

• Control Pressure Range: 21.5–40 bar (312–580 psi)

• Fluid Cleanliness Requirement: ISO 4406 18/16/13 or better

• Fluid Compatibility: Mineral-based hydraulic oil

• Operating Temperature Range: -40 to +104 ℃

• Cold Start Limitation: ≤50 bar, ≤1000 rpm, not exceeding 3 minutes

H1P Series Same-Family Displacement Reference (nominal conditions):

• H1P045: 45.0 cm³/rev, max 380–420 bar, rated 3400 rpm, theoretical flow 153 L/min, mounting flange SAE B

• H1P053: 53.8 cm³/rev, max 380–420 bar, rated 3400 rpm, theoretical flow 183 L/min, mounting flange SAE B

• H1P060: 60.4 cm³/rev, max 380–420 bar, rated 3500 rpm, theoretical flow 210 L/min, mounting flange SAE C

• H1P068: 68.0 cm³/rev, max 380–420 bar, rated 3500 rpm, theoretical flow 238 L/min, mounting flange SAE C

• H1P069: 69.2 cm³/rev, max 450 bar, rated 3500 rpm, theoretical flow 243 L/min, mounting flange SAE C

• H1P078: 78.1 cm³/rev, max 450 bar, rated 3500 rpm, theoretical flow 273 L/min, mounting flange SAE C

• H1P089: 89.2 cm³/rev, max 450 bar, rated 3300 rpm, theoretical flow 294 L/min, mounting flange SAE C

• H1P100: 101.7 cm³/rev, max 450 bar, rated 3300 rpm, theoretical flow 335 L/min, mounting flange SAE C

• H1P115: 115.2 cm³/rev, max 450 bar, rated 3200 rpm, theoretical flow 371 L/min, mounting flange SAE D

• H1P130: 130.0 cm³/rev, max 450 bar, rated 3200 rpm, theoretical flow 419 L/min, mounting flange SAE D

• H1P147: 147.2 cm³/rev, max 450 bar, rated 3000 rpm, theoretical flow 441 L/min, mounting flange SAE D

• H1P165: 165.1 cm³/rev, max 450 bar, rated 3000 rpm, theoretical flow 495 L/min, mounting flange SAE D

• H1P210: 211.5 cm³/rev, max 420–450 bar, rated 2600 rpm, theoretical flow 549 L/min, mounting flange SAE E

• H1P250: 250 cm³/rev, max 420–450 bar, rated 2600 rpm, theoretical flow 650 L/min, mounting flange SAE E

• H1P280: 280.2 cm³/rev, max 420–450 bar, rated 2600 rpm, theoretical flow 728 L/min, mounting flange SAE E

H1P Series Control Options:

• EDC (Electrical Displacement Control): Proportional solenoid precisely adjusts swashplate angle via electrical signal, available in 12V/24V, optional manual override

• FNR (Forward-Neutral-Reverse Control): Electric input signal switches pump to full stroke position, suitable for vehicle travel drives

• MDC (Manual Displacement Control): Mechanical input signal controls displacement via servo valve

• NFPE (Non-Feedback Proportional Electric Control): Non-feedback version of electrical proportional control

• FDC (Fan Drive Control): Automatically adjusts displacement based on cooling demand

• AC (Engine Speed Related Control): Automatically adjusts displacement based on engine speed

• HDC (Hydraulic Displacement Control): Hydraulic pilot signal controls displacement

Key Technical Advantages

1. Cradle Swashplate Design — Compact Lightweight and High Power Density

The H1P100 employs Danfoss H1 Series signature cradle swashplate design, achieving flow direction reversal by simply tilting the swashplate to the opposite side of its zero-displacement position, eliminating the need for additional directional valves and simplifying system plumbing layout. This design significantly reduces total part count (single swashplate, no T-bar), maintaining 450 bar high working pressure while keeping weight at approximately 62 kg, with power density leading among comparable closed-circuit piston pumps. The compact, length-optimized design enables easy integration into mobile machinery with limited installation space such as skid steer loaders and road rollers.

2. Electrical Displacement Control (EDC) — Precise Displacement Adjustment and Automation Integration

The H1P100RBAA5C3ND3HC3GBA353520 is equipped with Electrical Displacement Control (EDC), driving the control spool through a 12V proportional solenoid to precisely adjust swashplate angle for continuous proportional displacement control. This control method supports remote operation and automation integration, adapting to construction machinery ECU electronic control strategies. The EDC control device features manual override function, maintaining system operation through manual actuation when electrical signals are interrupted, ensuring equipment safety. Control signal response is fast and precise, particularly suitable for mobile machinery travel drive systems requiring accurate speed control.

3. Closed Circuit Design — Efficient Hydrostatic Transmission

The H1P100 employs a closed circuit design in which hydraulic fluid circulates in a closed loop between pump and motor, with only leakage flow replenished by the charge pump. Compared to open circuits, closed circuits offer higher system efficiency and more compact plumbing — ideal for travel drive applications requiring bidirectional infinitely variable speed. The integrated charge pump ensures the main circuit remains filled with hydraulic fluid, effectively preventing cavitation and maintaining system stiffness. Charge pressure is set at 30 bar (DM30 code), providing stable and reliable control oil supply for the servo control system.

4. Integral Filtration and PLUS+1® Compliant Interface — Flexible System Integration

The H1P100 features integral filtration options with integrated filter bypass sensors and switches in the endcap, enabling real-time monitoring of filtration status and preventing contaminant damage to the pump. The pump features standardized connector interfaces with PLUS+1® compliant control and sensor options, facilitating integration with Danfoss and other brand electronic control systems. The SAE-C four-bolt mounting flange and 23-tooth ANSI B92.1 splined shaft are standard configurations, enabling rapid drop-in interchangeability with original Danfoss H1P pumps.

5. Exceptional Field Interchangeability and Broad Compatibility

The H1P100RBAA5C3ND3HC3GBA353520 features ISO 3019-1 flange 127-4 (SAE-C four-bolt) mounting flange, 23-tooth splined shaft, and port layouts conforming to Danfoss H1P Series size 100 standards, enabling drop-in interchangeability with same-series H1P089, H1P115, and H1P130 models. The H1P Series covers a wide displacement range of 45–280 cm³/rev within a shared mounting flange system, offering EDC, FNR, MDC, NFPE, FDC, AC, and HDC control options for flexible selection in system design and equipment maintenance, dramatically reducing equipment downtime.

Application Areas

• Skid Steer Loaders: Travel drive hydrostatic transmission systems, with cradle swashplate design supporting compact installation

• Trenchers: Chain and wheel trencher travel and work device hydraulic drives

• Asphalt Pavers: Paver travel drive and material feed system hydraulic power sources

• Aerial Work Platforms: Scissor lift and boom lift travel and steering hydraulic drive systems

• Vibratory Rollers: Travel drive hydraulic systems, closed circuit enabling precise speed control

• Turf Care Equipment: Commercial turf care machinery travel drive hydraulic systems

• Agricultural Machinery: Tractor hydraulic hitch and auxiliary drive systems

• Material Handling Equipment: Telehandler and skid steer loader hydraulic power units

• Forestry Machinery: Harvester and forwarder hydraulic drive systems

The H1P100RBAA5C3ND3HC3GBA353520 is ideally suited for closed-circuit hydrostatic drive systems requiring 450 bar continuous working pressure and displacements in the 100 cm³/rev range — the classic configuration for skid steer loader and road roller travel drive hydraulic systems.

Expert Maintenance Tips

1. Shaft Alignment and Coupling Requirements

Maintain concentricity between the pump shaft and drive shaft within 0.05 mm. Flexible couplings are strongly recommended to accommodate minor angular misalignment. The H1P100 weighs approximately 62 kg — use appropriate lifting equipment during installation and never strike the shaft end. Tighten ISO 3019-1 flange 127-4 (SAE-C four-bolt) mounting flange bolts in diagonal sequence to the specified torque. The 23-tooth splined shaft (ANSI B92.1, 16/32 DP) engagement with the drive coupling should ensure sufficient spline engagement length; the coupling must not protrude beyond the specified point, and shaft and mounting flange surfaces must remain paint-free to ensure reliable torque transmission.

2. Pre-Start Charge Pump Priming Procedure (Mandatory)

As a closed-circuit pump, the H1P100RBAA5C3ND3HC3GBA353520 must be slowly filled through the charge pump suction port or case drain port with clean hydraulic oil before initial startup. Confirm the suction line is fully primed before starting the charge pump to prevent dry-running damage. Cold start conditions permit short-term operation at ≤50 bar, ≤1000 rpm for no more than 3 minutes, gradually increasing load after oil temperature rises. Start the pump in jog mode until charge pressure is established before applying load. After initial startup of the closed-circuit system, run at low pressure for 10–15 minutes and check charge pressure and case drain flow.

3. EDC Electric Controller Commissioning

Commission the EDC electric proportional controller using Danfoss-specific commissioning tools or the system ECU software, verifying the linear relationship between control current and displacement. The control signal is typically 0–10V or 4–20mA (verify specific configuration). During commissioning, first set the control signal to neutral and confirm zero pump displacement with no output flow, then gradually apply signal to verify displacement response. The EDC control device features manual override; verify manual override function during commissioning. The pressure limiter setting is 450 bar (L45) and the high-pressure relief valve setting is 480 bar; verify coordination with system safety valve settings.

4. Fluid Cleanliness and Filtration

The H1P100 requires fluid cleanliness of ISO 4406 18/16/13 or better. Use pressure line filters with a filtration ratio β10 ≥ 75 (per ISO 4572). The integral filtration option in the endcap features filter bypass sensors and switches for real-time filtration status monitoring. Charge pump inlet pressure should be maintained within rated 0.7 bar absolute and maximum 4.0 bar absolute. Case pressure should be maintained within rated 3.0 bar and maximum 5.0 bar to ensure case sealing operates within safe pressure limits. Charge pressure should be maintained at approximately 30 bar (DM30 setting) — too low will cause pilot control failure, too high may damage charge circuit seals.

5. Restart Procedure After Extended Shutdown

If the pump has been idle for more than 30 days, manually rotate the shaft several turns to verify free rotation before restarting. Check for abnormal leakage at the case drain port. After startup, operate at low pressure for 10–15 minutes until charge pressure stabilizes and oil temperature reaches normal operating range before applying full load. In closed-circuit systems, pay particular attention to charge pump operation status and charge filter differential pressure. Regularly inspect the splined shaft and drive coupling engagement during operation, ensuring sufficient spline engagement length to prevent spline wear.