Parker P1018 PD018 medium pressure axial piston hydraulic pump

The P1018 and PD018 are variable-displacement axial piston pumps built for open-circuit mobile applications. They belong to Parker's P1/PD medium-pressure series, which spans seven displacement sizes — 018, 028, 045, 060, 075, 100, and 140 — with the number roughly indicating displacement in cubic centimeters per revolution. At 18 cc/rev, the "018" variants are the smallest in the lineup, making them a natural fit for compact and mini excavators, small utility loaders, and other space-constrained equipment.

Core Specifications

At a glance, the P1018/PD018 typically offers:

Displacement: 18 cc/rev (about 1.1 in³/rev)

Continuous pressure: up to 280 bar / 4,060 psi

Intermittent peak pressure: up to 350 bar

Maximum speed: around 1,800–3,500 rpm depending on inlet conditions and configuration

Flow rate: roughly 32 L/min (8.5 GPM) at rated speed

Operating temperature: -40°C to +95°C (-40°F to +203°F)

Seal material: typically fluorocarbon for wide chemical and thermal compatibility

Mounting: SAE-A 2-bolt flange per SAE J744

Exact numbers shift depending on the specific model code (control type, shaft style, port configuration), so always confirm against the datasheet for your exact part number before ordering.

Where the P1018/PD018 Gets Used

Example 1: Mini and Compact Excavators

A 1.5–3 ton mini excavator is a textbook application. These machines need enough pressure to break ground and lift loads, but the engine bay and hydraulic package have almost no spare room. The P1018's compact SAE-A envelope and 18 cc/rev displacement deliver flow proportional to a small diesel engine's output without oversizing the system.

Example 2: Compact Utility Loaders and Skid Steers

Smaller skid steers and articulated loaders often run multiple hydraulic functions — drive, lift, tilt, and attachments — off a single pump. A load-sense-controlled PD018 lets the machine share flow intelligently across functions instead of running a fixed-displacement pump at full output constantly, which cuts fuel use and heat buildup during idle or light-duty cycles.

Example 3: Aerial Work Platforms and Specialty Equipment

Scissor lifts and small boom lifts need precise, controllable flow for smooth boom and platform movement — sudden pressure spikes translate directly into jerky motion at height. The pressure-limiter or electronic-control variants of the P1018 give manufacturers fine control over that behavior while keeping the pump package small enough to fit in a compact power unit.

Installation and Maintenance Notes

A few practical points that matter in the field, whether you're speccing a new pump or troubleshooting an old one:

Inlet conditions are critical. Axial piston pumps are more sensitive to cavitation than gear pumps. Keep inlet lines short, properly sized, and free of restrictions — a starved inlet is one of the most common causes of premature piston and cam bearing wear.

Case drain matters. These pumps rely on case drain flow to manage internal leakage and lubricate the swashplate assembly. A blocked or undersized case drain line can cause overheating and seal failure.

Match the control type to the circuit. Swapping a pressure-limiter pump into a system originally designed around load-sense control (or vice versa) can cause poor response or instability — the control code in the part number isn't cosmetic.

Fluid cleanliness. Piston pumps have tighter internal clearances than gear pumps, so contamination control (filtration, clean fill practices) has an outsized effect on service life.

Shaft seal life. Some configurations offer an optional case-to-inlet check valve specifically to extend shaft seal life by managing case pressure during shutdown — worth specifying if the machine sees frequent start-stop cycles.

For more information on the PD018 P1018 hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: What machines commonly use this pump?

A1: Mini and compact excavators, small skid steers and utility loaders, and other compact mobile equipment where engine output and package size are limited.

Q2: How do I identify the exact configuration of a P1018/PD018 I already have?

A2: Check the full part number on the pump nameplate — it encodes control type, shaft style, port configuration, seal material, and rotation direction. Cross-referencing that full code against Parker's catalog (or an authorized distributor) is the only reliable way to get an exact replacement.

Q3: What is the price and delivery time of the P1018 PD018 hydraulic pump?

A3: The specific price and delivery time will be provided based on the specific model you provide.

Q4: How to purchase the P1018 PD018 hydraulic pump?

A4:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.