9510080756 81131100 Rexroth Hydraulic Gear Pump

Hydraulic Tandem Gear Pump for Valtra/Valmet  PN: 81131100

The 81131100 is a high-performance Rexroth tandem (double) hydraulic gear pump manufactured by RCHC. It is a critical component for Valtra and Valmet tractors, specifically designed to power the steering and main hydraulic systems simultaneously.

Product Compatibility

This tandem pump is a direct replacement for various Valtra and Valmet tractor series, primarily those utilized in heavy-duty agricultural applications:

• Valmet/Valtra 100 Series: 118, 128, 138, 148
• Valmet/Valtra BM Series: BM100, BM110, BM120 (G1/G2 Generations)
• Valmet/Valtra 800 Series: 885, 985
• Other Models: 1280, 1580, 1780

Technical Specifications

• Part Number: 81131100
• OEM Cross-Reference: 9510080756, 836640234 (Variant), 0510765344
• Pump Configuration: Tandem Gear (Double Pump)
• Displacement: 22+16 cm³ / rev (Typical configuration)
• Rotation: Anti-clockwise (CCW)
• Shaft Design: 13-Spline shaft
• Maximum Pressure: 180 – 210 Bar (Intermittent)

Key Features and Benefits

• Dual Circuit Reliability: Features two independent pumping chambers within a single housing, ensuring dedicated flow for steering safety and secondary hydraulic implements.
• RCHC Engineering: Manufactured to the highest global standards for hydraulic efficiency, reducing heat generation and power loss.
• Heavy-Duty Construction: Built with high-strength materials to withstand the high-pressure spikes common in loader work and heavy soil cultivation.
• Direct Interchangeability: Designed to match OEM mounting flanges and port locations, ensuring a seamless “drop-in” installation with existing hydraulic lines.
• Enhanced Steering Response: Provides consistent flow to the steering orbitrol even when the main hydraulic lift is under maximum load.

Ordering and Maintenance Information

• Condition: 100% Brand New (Can replace original Rexroth pumps.)
• Installation Requirement: To validate the warranty and ensure longevity, the hydraulic system must be flushed and the primary hydraulic filters replaced during installation.
• Packaging: Secure industrial packaging to prevent contamination or damage during transit.

Ruichen Hydraulic Machinery Manufacturing Co., Ltd., established in 2000, is a global provider of high-quality hydraulic solutions. Located in Hebei Province, China, our 55,000 m² factory employs over 300 staff, including 15 engineers and 5 senior engineers. We specialize in cast iron gear pumps, gear motors, and hydraulic control valves, widely used in construction machinery, agricultural equipment, mining, and industrial applications.