HYDROMATIK A4V40 HYDRAULIC PUMP

The Hydromatik A4V40 Hydraulic Pump is a genuine Bosch Rexroth axial piston pump, manufactured under the designation A4V40 HD1OR001010 (reference numbers 233.17.15.21 and 2998533). Built on a swashplate axial piston design, this pump is engineered for high-pressure hydraulic applications, capable of operating in both open and closed circuits across a wide range of industrial and mobile equipment.

The A4V40 delivers a maximum displacement of 40 cc/rev with a maximum operating pressure of 350 bar, giving it enough capacity for demanding jobs in construction equipment, material handling machinery, and agricultural applications. Flow output is proportional to drive speed and swash plate angle, allowing it to deliver consistent, controllable hydraulic power across changing load conditions. This design also gives it strong efficiency characteristics, keeping energy loss low even as the pump adjusts to varying system demands.

Because axial piston pumps like the A4V40 rely on tight internal clearances between the pistons, cylinder block, and swashplate assembly to hold their rated pressure and flow, fitting the genuine Hydromatik/Rexroth unit rather than a generic equivalent matters for keeping the pump’s output consistent over time. A pump with mismatched tolerances or worn components can quietly lose efficiency — showing up as reduced flow, overheating, or inconsistent pressure — long before a more serious failure develops. Installing the correct OEM pump protects the rest of the hydraulic circuit and keeps the system running at its designed performance level.

Technical Features

• Genuine Hydromatik / Rexroth-spec axial piston pump
• Model: A4V40 HD1OR001010
• Reference numbers: 233.17.15.21, 2998533
• Made in Germany
• Displacement: 40 cc/rev | Maximum pressure: 350 bar
• Swashplate axial piston design suitable for open and closed circuits
• Flow proportional to drive speed and swash plate angle for controllable output
• Precision-manufactured for consistent volumetric efficiency

Compatible Applications

• Construction equipment hydraulic circuits
• Material handling machinery
• Agricultural machinery hydraulic systems

Alternative Part Numbers

• Caterpillar 209-3258 Hydraulic Pump
• Komatsu 705-58-44050 Hydraulic Pump
• Rexroth A10VSO 28cc DFLR Hydraulic Pump

Shop & Supply stocks the Hydromatik A4V40 Hydraulic Pump for immediate dispatch, alongside a broad lineup of genuine Rexroth axial piston pumps for construction and industrial equipment. Choosing the original German-manufactured part means the exact displacement, pressure rating, and internal tolerances your hydraulic system was engineered around — reliable performance without the guesswork of an unverified substitute.