Yuken AR22 Variable Piston Pump

The Yuken AR Series is a highly efficient, variable displacement axial piston pump designed with a focus on compactness and weight reduction. By utilizing a specially designed aluminum alloy body, the AR22-FR01B-22 is significantly smaller and lighter than standard industrial piston pumps without sacrificing performance. Featuring a displacement of 22.2 cm³/rev and standard pressure compensator control, it delivers precise hydraulic power exactly when needed, reducing energy consumption and heat generation. It is the premier choice for modern CNC machine tools and compact hydraulic power units.

Key Features:

Brand: Yuken
Series: AR Series (Compact & Lightweight)
Displacement: 22.2 cm³/rev
Pressure Range (B): 1.2 to 7 MPa (12 to 70 bar)
Design Feature: Aluminum body, low noise operation.

Product Overview The Yuken AR22 Variable Pump operates on a swashplate design, where the flow rate can be automatically adjusted to maintain a set system pressure. The built-in “01” Pressure Compensator ensures that the pump only delivers the exact amount of oil required by the actuators. Once the set pressure is reached, the pump destrokes to near-zero flow, drastically saving energy and preventing the hydraulic oil from overheating.

Why Choose the Yuken AR Series?

Ultra-Compact & Lightweight: The aluminum construction makes the AR series much lighter and smaller in physical dimensions compared to traditional cast-iron pumps (like the Yuken ‘A’ series). This is critical for space-constrained machine tool layouts.
Low Noise Level: Precision engineering of the internal components ensures whisper-quiet operation, improving the factory working environment and meeting strict noise regulations.
Energy Saving: The rapid-response pressure compensator minimizes wasted energy during holding or idling cycles.
High Reliability: Despite its light weight, the AR series features robust internal bearings and wear-resistant port plates, ensuring a long, trouble-free service life.

Common Applications:

Machine Tools: CNC lathes, milling machines, machining centers.
Light Industrial Machinery: Small press machines, shoe-making machinery.
Hydraulic Power Units (HPUs): Compact, indoor power packs where space and noise are critical constraints.

Specification	Value / Description
Product Type	Variable Displacement Axial Piston Pump
Series	AR Series (Compact / Aluminum Body)
Displacement ( $V_{g max}$ )	22.2 cm³/rev (approx. 33.3 L/min at 1500 rpm)
Max. Operating Pressure	16 MPa (160 bar / 2320 psi) Depending on configuration
Pressure Adj. Range (B)	1.2 – 7.0 MPa (12 to 70 bar)
Max. Speed	1800 r/min
Weight	Approx. 11.2 kg (Significantly lighter than cast-iron equivalents)
Model Breakdown	AR22 – F R 01 B – 22
– AR	Series: Variable Displacement Piston Pump (Compact Design)
– 22	Size / Displacement: 22.2 cm³/rev
– F	Type of Mounting: Flange Mounting
– R	Direction of Rotation: Right / Clockwise (viewed from shaft end)
– 01	Control Type: Pressure Compensator Control
– B	Pressure Adjustment Range: 1.2 to 7 MPa (C= 1.2-16 MPa)
– 22	Design Number