P2105R00C1C23 P2105L00C2C32 Parker P2 Piston Pump 105cc

Product Overview

The P2105R00C1C23LA20N00A1B2P, P2105L00C2C32LA10D00S1B1U, and P2105R00C1C23LA20N00T1B1P are the 105 cc-class core models within the Parker Hannifin P2 series of high pressure/high speed axial piston variable displacement pumps. The P2 series is Parker’s flagship platform in mobile hydraulics, spanning displacements from 60 to 145 cm³/rev with rated pressures of 320–350 bar and peak pressure of 4600 psi, specifically engineered for open-circuit mobile hydraulic systems.

The P2 series employs a swashplate design featuring a very compact design, low noise level, and low pressure ripple. The series is renowned for high self-priming speed, compact design, high power density, and ease of installation, carrying Heavy Duty approval (sizes 105 and 145) for cost-effective installation within the limited space available on modern mobile machines.

P2 Series Core Features: Swashplate variable displacement piston pump for open-circuit hydraulic systems; compact lightweight design; low noise level and low pressure ripple; integrated pre-compression volume (Ripple Chamber) for further reduction of flow pulsation and noise; high self-priming speed; sealed shaft bearing; through-drive options; multiple control options (Pressure Compensator PA, Load Sensing LA/LB, Torque Limiting TA/TB/TC/TD); cast iron housing.

Model Code Breakdown (for procurement and engineering reference):

Using P2105R00C1C23LA20N00A1B2P as example:

• P2105: P2 series, nominal size 105, geometric displacement 105 cm³/rev (6.41 in³/rev)

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

• 00: Torque control setting code (00 = for non-torque control pumps)

• C1: Shaft option code

• C23: Mounting flange and port configuration code

• LA: Control type — Load Sensing (2 spool)/Pmax without bleed orifice

• 20: Pressure compensator setting code (200 bar)

• N00: Additional control configuration code

• A1B2: Port location and seal configuration code

• P: Additional configuration identifier

Model Configuration Differences (covered in this listing):

P2105R00C1C23LA20N00A1B2P:

• Rotation: Right-hand (R)

• Control Type: LA — Load Sensing

• Pressure Setting: 200 bar

• Port Configuration: A1B2 (Side flanges, UNC thread)

• Shaft: C1 specification

P2105L00C2C32LA10D00S1B1U:

• Rotation: Left-hand (L)

• Control Type: LA — Load Sensing

• Pressure Setting: 100 bar (C32 corresponding code)

• Port Configuration: B1U (Side flanges, metric thread)

• Shaft: C2 specification

P2105R00C1C23LA20N00T1B1P:

• Rotation: Right-hand (R)

• Control Type: LA — Load Sensing

• Pressure Setting: 200 bar

• Port Configuration: T1B1P (Top port configuration)

• Shaft: C1 specification

P2 Series Control Options:

PA — Pressure Compensator Control: Standard max pressure control, adjustment range 120–320 bar (1740–4600 PSI). When system pressure reaches the setpoint, the pump automatically reduces displacement to maintain constant pressure output.

LA/LB — Load Sensing Control: Two-spool design. The top spool is the load sensing spool, while the bottom spool functions as the maximum pressure compensator control. When system pressure reaches the maximum pressure compensator setting, the pump enters constant pressure control mode; when load flow demand decreases, the flow regulator automatically reduces displacement to maintain constant throttle pressure drop (standard 20 bar). The main difference between LA and LB is the presence of a bleed orifice: LA does not have a bleed orifice, while LB includes one.

TA/TB/TC/TD — Torque Limiting Control: Torque limiting with load sensing composite control. As system pressure rises, the torque limiter automatically reduces pump displacement so that pump input power (P×Q) does not exceed the setpoint, achieving precise matching between hydraulic system power and prime mover output power while effectively preventing engine overload stall. TA/TB/TC/TD correspond to different torque control characteristic curves.

Drop-in Replacement Advantage: Manufactured to exact Parker OEM specifications, these pumps achieve complete drop-in interchangeability with the original P2 series for SAE C two-bolt or four-bolt mounting flange, ANSI B92.1 splined shaft, SAE standard port layout, and LA/PA control module interface. Every pump undergoes 100% simulated load testing prior to shipment, validating 350 bar pressure loading, load sensing response, and volumetric efficiency under conditions replicating real-world duty cycles.

Technical Specifications 

P2105 Series General Specifications:

• Series: Parker P2 Series (Open Circuit, Swashplate Design)

• Nominal Size: P2105

• Geometric Displacement: 105 cm³/rev (6.41 in³/rev)

• Rated Pressure: 350 bar (5075 psi)

• Maximum Operating Pressure: 320 bar (4600 psi)

• Maximum Outlet Pressure: 4600 PSI (320 bar)

• Rated Drive Speed: 2300 rpm

• Minimum Speed: 600 rpm

• Maximum Speed: 2300 rpm

• Maximum Flow: 61 GPM (231 L/min)

• Maximum Input Horsepower: 185 HP (138 kW)

• Maximum Torque: 594 N·m (5257 lb/in²)

• Moment of Inertia: 0.0168 kg·m²

• Control Type: LA — Load Sensing (2 spool)/Pmax without bleed orifice

• Pressure Compensator Adjustment Range: 120–320 bar (1740–4600 PSI)

• LS Differential Pressure Setting Range: 10–35 bar (standard 20 bar)

• Rotation: Right-hand (R, CW) or left-hand (L, CCW)

• Mounting Flange: SAE C 2-bolt or 4-bolt flange

• Shaft: SAE CC keyed or splined shaft

• Port Connections: Inlet 1-1/2″-13 UN; Outlet 1-1/2″-13 UN; Drain 1-1/16″-12 O-ring SAE 12

• Gauge Ports: 2×7/16″-20 UN O-ring SAE 4

• Signal Port: 1×7/16″-20 UN O-ring SAE 4

• Housing Material: High-strength cast iron

• Seal Material: NBR (nitrile rubber), single shaft seal

• Working Fluid: Mineral oil (HLP), biodegradable hydraulic oil, synthetic hydraulic oil, water-based fire-resistant fluid (HFC)

• Recommended Viscosity: 15–40 mm²/s (normal), 10 mm²/s (short-term min.), 1000 mm²/s (short-term max.)

• Fluid Cleanliness: ISO 4406 21/18/14 or better

• Operating Temperature Range: -40°C to +90°C (NBR seals)

• Weight: Approx. 63 kg

Model P2105R00C1C23LA20N00A1B2P Configuration:

• Model Code: P2105R00C1C23LA20N00A1B2P

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

• Control Type: LA — Load Sensing, 200 bar pressure setting

• Port Location: A1B2 side ports (UNC thread)

• Mounting Flange: SAE C 2/4-bolt

• Shaft: C1 specification

Model P2105L00C2C32LA10D00S1B1U Configuration:

• Model Code: P2105L00C2C32LA10D00S1B1U

• Rotation: Left-hand (counterclockwise, viewed from shaft end)

• Control Type: LA — Load Sensing, 100 bar pressure setting

• Port Location: B1U side ports (metric thread)

• Mounting Flange: SAE C 2/4-bolt

• Shaft: C2 specification

Model P2105R00C1C23LA20N00T1B1P Configuration:

• Model Code: P2105R00C1C23LA20N00T1B1P

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

• Control Type: LA — Load Sensing, 200 bar pressure setting

• Port Location: T1B1P top port configuration

• Mounting Flange: SAE C 2/4-bolt

• Shaft: C1 specification

P2 Series Displacement Size Reference:

• P2060: 60 cm³/rev, rated 320 bar, self-priming speed 2800 rpm, max flow 159 L/min, max power 72 kW, weight 37 kg

• P2075: 75 cm³/rev, rated 320 bar, self-priming speed 2500 rpm, max flow 182 L/min, max power 108 kW, weight 44 kg

• P2105: 105 cm³/rev, rated 350 bar, self-priming speed 2300 rpm, max flow 231 L/min, max power 138 kW, weight 63 kg

• P2145: 145 cm³/rev, rated 350 bar, self-priming speed 2200 rpm, max flow 295 L/min, max power 179 kW, weight 82 kg

P3 Series Displacement Size Reference:

• P3105: 105 cm³/rev, rated 350 bar, self-priming speed 2600 rpm, max flow 231 L/min, weight 78 kg

• P3145: 145 cm³/rev, rated 350 bar, self-priming speed 2500 rpm, max flow 295 L/min, weight 80 kg

Key Technical Advantages

1. LA Load Sensing Control with On-Demand Flow
The P2105R00C1C23LA20N00A1B2P, P2105L00C2C32LA10D00S1B1U, and P2105R00C1C23LA20N00T1B1P are all equipped with the LA load sensing control module. LA control employs a two-spool design — the top spool is the load sensing spool, while the bottom spool functions as the maximum pressure compensator control. When system pressure reaches the maximum pressure compensator setting, the pump enters constant pressure control mode; when load flow demand decreases, the flow regulator automatically reduces displacement to maintain constant throttle pressure drop (standard 20 bar). The LS differential pressure setting range is 10–35 bar, adjustable to match system throttle valve characteristics. The system delivers only the flow actually required by the actuators, avoiding excess flow being converted to heat through the relief valve for significant energy savings under variable load conditions. LA control has no bleed orifice, suitable for systems requiring rapid response; LB control includes a bleed orifice, suitable for systems requiring stable stand-by pressure.

2. High Power Density with Compact Lightweight Design
The P2 series employs a swashplate axial piston rotary group design where swashplate inclination angle determines piston stroke and displacement. The P2105 achieves maximum flow of 231 L/min, maximum power of 138 kW, and maximum torque of 594 N·m at 105 cm³/rev, achieving a power density of approximately 2.2 kW/kg, leading its displacement class. The compact structural design enables the P2 series to deliver high flow output while maintaining a small installation envelope, particularly suitable for cost-effective installation within the limited space available on modern mobile machines. The envelope is optimized and the unique port layout ensures fast and cost-saving mounting.

3. Ripple Chamber Pre-Compression Volume with Low Noise Operation
The P2 series incorporates Parker’s proprietary Ripple Chamber technology with integrated pre-compression volume, effectively reducing flow pulsation and pressure pulsation. The P2105 achieves a noise level of 78 dB(A) at full flow at 1800 rpm and 250 bar, leading the industry. This design reduces vibration and noise in the hydraulic system, providing a more comfortable working environment for operators while reducing pipe fatigue and leakage risk.

4. High Self-Priming Speed with Excellent Suction Characteristics
The P2 series features high self-priming speed (Self-Priming Speed), with the P2105 achieving self-priming speed of 2300 rpm at 1 bar absolute inlet pressure, enabling stable oil suction without an auxiliary pump. Minimum inlet absolute pressure is 0.8 bar, maximum inlet absolute pressure is 10 bar, accommodating various reservoir layouts and installation heights. This characteristic effectively reduces system complexity and installation costs while minimizing cavitation and aeration risk.

5. High-Strength Cast-Iron Housing with Wide Hydraulic Fluid Compatibility
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 P2 series is compatible with multiple hydraulic fluids: mineral oil (HLP), biodegradable hydraulic oil, synthetic hydraulic oil, and water-based fire-resistant fluid (HFC). When using water-based fire-resistant fluid, system maximum pressure is reduced to 210 bar and bearing life is approximately 25% of mineral oil. Recommended viscosity range is 15–40 mm²/s (normal), 10 mm²/s (short-term minimum), 1000 mm²/s (short-term maximum). The seal material is NBR (nitrile rubber) with single shaft seal configuration, with an operating temperature range of -40°C to +90°C.

6. Through Drive and Modular System Expansion
The P2 series supports through drive, allowing direct mounting of subsequent pumps of same or smaller size on the rear of the main pump for single-drive multi-pump compound hydraulic systems. P2105/P3105 through-drive maximum torque is 650 N·m, meeting the power distribution requirements of diverse compound hydraulic systems. Modular control designs enable field conversion and upgrade, with standardized SAE C two-bolt or four-bolt mounting flange and shaft requiring no adaptation for replacement, significantly reducing equipment downtime. The P2 series offers single pump or multi-pump configuration options.

Application Areas

• Forestry: Feller bunchers, knuckle boom loaders, skidders, forwarders

• Construction: Wheel loaders, dozers, off-highway trucks

• Mining: Drill rigs, loaders

• Material Handling: Truck mounted cranes, lift trucks, reachstackers

• Recycling: Shredders, balers, compactors

• Agricultural Machinery: High-horsepower tractors, combine harvester hydraulic drives

• Industrial Hydraulic Power Units: Medium-high pressure hydraulic power units, central oil supply systems

• Marine & Offshore: Ship deck machinery hydraulic drives, marine winch hydraulic systems

Expert Maintenance Tips

1. Hydraulic Fluid Cleanliness
The P2 series LA control spool operates with extremely tight clearances and is highly sensitive to particulate contamination. System fluid cleanliness must meet ISO 4406 21/18/14 or better. Recommended fluids are ISO VG32 or VG46 anti-wear hydraulic oils (HLP mineral oil). 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. Contamination control is the primary condition for ensuring long-term stable LA controller operation.

2. LA Load Sensing Controller Commissioning and Differential Pressure Setting
The LA controller has an LS differential pressure setting range of 10–35 bar (standard 20 bar) and a pressure compensator adjustment range of 120–320 bar. Set the pressure 15–20 bar above the maximum working load pressure, never exceeding the 350 bar rated pressure. The LS differential pressure setting must be matched to system throttle valve characteristics — for fan-drive systems and systems with motors, the LS setting should be no less than 15 bar to enhance system stability. Adjust only with the system at zero load. Rotate the adjustment screw slowly and verify stable pressure gauge readings before proceeding. Note: The pressure controller is not a safeguard against pressure overload — a pressure relief valve must be installed in the system.

3. Case Drain Line Requirements
The case drain line must return directly to the reservoir. Maximum case drain pressure is 1.5 bar absolute. 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 (1-1/16″-12 O-ring SAE 12). Case drain temperature (influenced by pressure and speed) may be up to 20°C higher than reservoir temperature, but the temperature at any part must not exceed the seal material’s permissible range.

4. 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 then apply load.

5. Water-Based Fire-Resistant Fluid Usage Notes
If the system uses water-based fire-resistant fluid (HFC), confirm seal material compatibility. When using water-based fire-resistant fluid, system maximum pressure is reduced to 210 bar and bearing life is approximately 25% of mineral oil. Consulting Parker technical department for confirmation of suitable configurations is recommended when adopting water-based fire-resistant fluids. When changing hydraulic fluid types, simultaneously check seal material compatibility and perform system flushing and fluid replacement according to Parker technical manual requirements.

6. Installation Alignment and Plumbing
Ensure drive shaft alignment during installation, employing a flexible coupling. Apply appropriate grease to the spline or keyed connection to prevent fretting wear. The suction line diameter must not be smaller than the pump suction port diameter to avoid excessive suction resistance causing cavitation. Inlet absolute pressure must be maintained between 0.8 and 10 bar. The P2 series’ unique port layout design ensures fast and cost-saving mounting; take full advantage of this design advantage during installation.