T90R100MADNN8AS3D7F03MIX383820 Parker T90 Axial Piston Pump 100cc

Product Overview

The T90R100MADNN8AS3D7F03MIX383820 is the 100 cc-class core model within the Parker T90 series of axial piston variable displacement pumps. The T90 series is Parker’s flagship platform for closed-circuit hydrostatic transmissions, spanning displacements from 42 to 250 cm³/rev with a rated working pressure of 400 bar and peak pressure of 420 bar, specifically engineered for concrete mixer drum drives, construction machinery travel drives, and industrial hydraulic systems.

The T90 series employs a swashplate design with parallel-arranged axial piston shoes, achieving variable displacement by altering piston stroke via an angle-adjustable swashplate. The direction of pump outlet oil changes with swashplate orientation, enabling forward/reverse switching of the motor output shaft. The pump’s rear end cover accommodates a range of auxiliary mounting flanges for series pump configurations. An integrated charge pump supplies supplementary hydraulic fluid, cools the oil, and provides the pressure oil required for control functions. Multiple control options (manual, electrically controlled, and hydraulically controlled) are provided to meet specific system requirements.

Model Code Breakdown (for procurement and engineering reference):

Using T90R100MADNN8AS3D7F03MIX383820 as example:

• T90: Parker T90 series axial piston variable displacement pump

• R: Rotation direction code, right-hand (clockwise, viewed from shaft end)

• 100: Nominal size (NG), geometric displacement 100 cm³/rev

• MA: Control type code, Manual Control

• DNN: Port and mounting configuration code

• 8AS: Shaft and auxiliary mounting flange configuration code. 8 = design variant, A = auxiliary mounting flange code, S = shaft code

• 3D7F03: Control valve design number and factory calibration code

• MIX: Application identifier, indicating the pump is designed for concrete mixer applications

• 383820: Factory batch and serial number

About the T90 Series Application Positioning: The T90 series is Parker’s closed-circuit piston pump platform specifically developed for concrete mixer drum drives, with extensive field-proven applications in global mixer hydraulic systems. The series can be integrated with T90 series motors or other hydraulic products to form complete hydraulic drive systems. The T90R100 specification is widely applied in mixer trucks, construction machinery, and industrial hydraulics.

Drop-in Replacement Advantage: Manufactured to exact Parker OEM specifications, this pump achieves complete drop-in interchangeability with the original T90 series for SAE mounting flange, shaft dimensions, SAE main port layout, and control module interface. Every pump undergoes 100% simulated load testing prior to shipment, validating 400 bar pressure loading, control response, and volumetric efficiency under conditions replicating real-world duty cycles.

Technical Specifications 

T90R100 Series General Specifications:

• Series: Parker T90 Series (Closed Circuit, Swashplate Design)

• Nominal Size: 100

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

• Rated Working Pressure: 400 bar (5800 psi)

• Peak Pressure: 420 bar (6090 psi)

• Maximum Case Pressure: 5 bar (72.5 psi)

• Rated Speed: 3000 r/min

• Maximum Speed: 3200 r/min

• Theoretical Flow at 3000 rpm: 300 L/min (79.3 GPM)

• Control Type: Manual Control (MA), with electric and hydraulic control options available

• Integrated Charge Pump Displacement: 32 cm³/rev (standard configuration)

• Charge Pressure Range: 18–25 MPa (180–250 bar)

• Maximum Control Pressure: 3.5 MPa (35 bar)

• Rotation: Right-hand (clockwise, viewed from shaft end, R code)

• Mounting Flange: SAE standard flange

• Shaft: SAE splined shaft

• Housing Material: High-strength cast iron

• Seal Material: NBR (nitrile rubber), suitable for mineral oil-based hydraulic fluid

• Working Fluid: ISO VG32 / VG46 anti-wear hydraulic oil

• Fluid Cleanliness: ISO 4406 18/15 or better

• Weight: Approx. 68 kg (net), 71 kg (packaged)

• Application: Concrete mixer trucks, construction machinery, industrial hydraulic systems

T90 Series Displacement Size Reference:

• T90R042: 42 cm³/rev, rated 400 bar, peak 420 bar, max speed 3750 rpm, weight approx. 28 kg

• T90R055: 55 cm³/rev, rated 400 bar, peak 420 bar, max speed 3500 rpm, weight approx. 40 kg

• T90R075: 75 cm³/rev, rated 400 bar, peak 420 bar, max speed 3150 rpm, weight approx. 49 kg

• T90R100: 100 cm³/rev, rated 400 bar, peak 420 bar, max speed 3200 rpm, weight approx. 68 kg

• T90R130: 130 cm³/rev, rated 400 bar, peak 420 bar, max speed 2800 rpm, weight approx. 82 kg

• T90R180: 180 cm³/rev, rated 400 bar, peak 420 bar, max speed 2500 rpm, weight approx. 105 kg

• T90R250: 250 cm³/rev, rated 400 bar, peak 420 bar, max speed 2200 rpm, weight approx. 156 kg

T90 Series Motor Reference:

• T90M055: 55 cm³/rev, continuous 400 bar, peak 450 bar, max speed 3600 rpm

• T90M075: 75 cm³/rev, continuous 400 bar, peak 450 bar, max speed 3200 rpm

• T90M100: 100 cm³/rev, continuous 450 bar, peak 500 bar, max speed 3000 rpm

Note: Data compiled from Parker T90 series technical documentation and industry-published technical references. T90M100 motor maximum working pressure up to 450–500 bar.

Key Technical Advantages

1. Closed-Circuit Design with High Power Density
The T90 series is specifically designed for closed-circuit hydrostatic transmissions. Compared to open-circuit systems, closed-circuit designs offer compact structure, higher efficiency, and smaller reservoir volume. The 100 cc size delivers a theoretical flow of 300 L/min (at 3000 rpm) at 400 bar rated pressure, leading its displacement class in power density. Output flow increases smoothly with swashplate swivel angle from 0 to maximum value, and flow direction changes smoothly when the swashplate is moved through the neutral position, enabling forward/reverse switching of the motor output shaft.

2. Integrated Charge Pump with Closed-Circuit Protection System
The T90 series incorporates an integrated charge pump with a standard displacement of 32 cm³/rev, supplying supplementary hydraulic fluid, cooling the oil, and providing the pressure oil required for control functions. The charge pressure range is 18–25 MPa (180–250 bar), regulated by an internal charge relief valve. Charge pressure supplies the control with pressure to operate the swashplate and maintains minimum pressure in the low side of the transmission loop, ensuring stable closed-circuit operation under all conditions.

3. Manual Control with Flexible Control Options
The T90R100MADNN8AS is equipped with a Manual Control (MA) module. Manual control operates the servo valve directly through mechanical linkage, offering rapid response, particularly suitable for mixer drum drive scenarios requiring direct operator displacement control. The T90 series also offers electric (12/24 VDC solenoid-operated) and hydraulic (spring-centered four-way servo valve operated by hydraulic input signal) control options to meet different system requirements.

4. Swashplate Design with Precision Rotary Group
The T90 series employs a swashplate axial piston rotary group design with parallel-arranged piston shoes, achieving variable displacement by altering piston stroke via an angle-adjustable swashplate. Pistons and cylinder bores are precision match-ground to micron-level clearances. The integrated charge pump and multiple auxiliary mounting flange options provide high system integration flexibility.

5. High-Strength Cast-Iron Housing with Long Service Life
The pump body is precision-cast from high-strength cast iron, with the material’s damping characteristics effectively suppressing structural vibration and fluid-borne noise. The T90 series is renowned for compact lightweight design and high power density, with robust construction suitable for continuous duty in demanding environments such as concrete mixer trucks. Multiple auxiliary mounting flanges accommodate series pump configurations for compound hydraulic system expansion.

6. Wide Hydraulic Fluid Compatibility with Broad Temperature Adaptability
The T90 series is compatible with ISO VG32 or VG46 anti-wear hydraulic oils, meeting the requirements of construction machinery applications under different climate conditions. The seal material is NBR (nitrile rubber), with standard configuration suitable for mineral oil-based hydraulic fluids. System fluid cleanliness must meet ISO 4406 18/15 or better.

Application Areas

• Concrete Mixer Trucks: Drum drive closed-circuit hydraulic systems (the core application area for the T90 series)

• Construction Equipment: Excavator travel drives, road roller travel hydraulic systems, wheel loader hydraulic drives

• Concrete Pump Trucks: Pumping system auxiliary hydraulic drives, boom hydraulic systems

• Mining Equipment: Mining truck hydrostatic drives, underground LHD hydraulic systems

• Agricultural Machinery: Combine harvester hydraulic drives, high-horsepower tractor closed-circuit transmissions

• Industrial Hydraulic Power Units: Closed-circuit hydraulic power units, test bench hydraulic systems

Expert Maintenance Tips

1. Hydraulic Fluid Cleanliness
The T90 series control spool operates with extremely tight clearances and is highly sensitive to particulate contamination. System fluid cleanliness must meet ISO 4406 18/15 or better. Recommended fluids are ISO VG32 or VG46 anti-wear hydraulic oils. Install a 10 μm absolute-rated filter element at the pump inlet. Replace elements at 500 hours after first commissioning, then every 1,000 operating hours or 6 months, whichever comes first.

2. Charge Pressure Inspection and Maintenance
The T90 series integrated charge pump comes standard, with a charge pressure range of 180–250 bar. Insufficient charge pressure causes piston slippers to lose contact with the valve plate, resulting in dry wear; excessive charge pressure increases system heat generation. Inspect the charge relief valve setting and sealing condition every 2,000 operating hours. The charge pump displacement is 32 cm³/rev; periodically confirm that charge flow meets system cooling and leakage compensation requirements.

3. Manual Control Linkage Maintenance
The T90R100MADNN8AS is equipped with a manual control module operating the servo valve through mechanical linkage. Regularly inspect the linkage mechanism for wear and clearance, ensuring normal operating feel and accurate response. Apply appropriate grease to linkage joints to prevent corrosion and binding. If abnormal increase in operating force or insensitive displacement control is observed, promptly inspect the servo valve and linkage mechanism.

4. Case Drain Line Requirements
The case drain line must return directly to the reservoir. Maximum permissible case pressure is 5 bar (72.5 psi). The drain outlet must terminate below oil level at all times to prevent air ingestion. The drain line diameter must not be smaller than the pump case drain port size. For 100 cc class pumps, case drain flow is substantial — drain line design must fully account for flow demand.

5. Pre-Start Priming and Air Bleeding
Before first start, fill the pump housing with clean hydraulic fluid through the case drain port. After installation, turn the drive shaft by hand several revolutions to confirm free rotation without binding. Position the control at neutral (zero displacement) and run at low speed for 5–10 minutes. Verify continuous bubble-free flow from the case drain. Only after confirming adequate lubrication and charge pressure should the pump be loaded.

6. Splined Shaft and Coupling Maintenance
The T90R100 uses a SAE splined shaft. Ensure drive shaft alignment during installation, employing a flexible coupling. Apply appropriate grease to the spline connection to prevent fretting wear. Inspect coupling alignment and spline wear at 500 hours after first commissioning, then recheck every 2,000 operating hours.