A10VO100 Rexroth Variable Piston Pump 280Bar

Product Overview

The A10VO100DFR/31L-VUC62N00 is a heavy-duty swashplate axial variable displacement piston pump engineered on the proven Bosch Rexroth Series 31 framework. Built for open-circuit hydraulic systems requiring medium-to-high pressure performance, this unit delivers 100% direct drop-in interchangeability with OEM pumps. Every manufactured pump undergoes 100% full-load simulated testing prior to dispatch, guaranteeing precise pressure-flow dynamic response, minimum volumetric loss, and long service life under continuous heavy loads.

Technical Specifications

• Model Code: A10VO100DFR/31L-VUC62N00

• Displacement: 100 cm³/rev (cc/rev)

• Nominal Pressure: 280 bar (4000 psi)

• Maximum Pressure: 350 bar (5100 psi)

• Maximum Drive Speed: 2000 rpm (at suction inlet)

• Control Type: DFR / DFR1 (Pressure and Flow Control / Load Sensing)

• Direction of Rotation: Left-hand (L / Counter-Clockwise)

• Seals Material: FKM (Viton / V, high-temperature resistance)

• Mounting Flange & Shaft: SAE C 2-bolt mounting flange with SAE splined shaft

• Unit Weight: Approx. 45 kg

Key Technical Advantages

• High-Efficiency DFR Load-Sensing Control: Features integrated differential pressure and cut-off control valves, automatically adjusting flow to meet system demand and preventing energy dissipation as excess heat.

• Advanced Bimetallic Metallurgy: Tribological pairs—including the cylinder block and valve plate—utilize high-grade sintered bronze on steel, ensuring volumetric efficiency above 92% under continuous 280 bar operation.

• Low Noise & Low Pulsation Design: Engineered with optimized swashplate geometry and silent valve plate pre-compression grooves to suppress hydraulic fluid pulsation and operational noise.

• 100% Dimensional Interchangeability: Standardized SAE mounting interface, shaft extension, and port dimensions match original Bosch Rexroth specifications exactly, requiring no plumbing modifications.

Application Areas

• Construction Equipment: Main hydraulic supply pumps for excavators, rotary drilling rigs, and concrete pump trucks.

• Industrial Machinery: Hydraulic power units for injection molding machines, forging presses, and metal shears.

• Mobile Machinery: High-demand steering, lifting, and propulsion hydraulic circuits in agricultural harvesters and heavy-duty utility vehicles.

Expert Maintenance Tips

Flush the hydraulic system thoroughly and replace return filters before installing the new pump. Maintain fluid cleanliness at ISO 19/17/14 (NAS Class 8) or cleaner using ISO VG 46/68 anti-wear hydraulic oil. Prior to initial commissioning, pre-fill the pump cavity with clean hydraulic oil through the highest case drain port (Port L/L1) to prevent dry friction damage to the bearings and valve plate.