MPT046 Danfoss Hydraulic Piston Pump 210Bar

Product Overview

The MPT046 (part of the MPV/MPT Series 025/035/044/046 family) is a premium axial variable displacement piston pump engineered on the proven Sauer-Danfoss Series 40 platform. Designed specifically for medium-power closed-circuit hydrostatic transmissions, this pump offers 100% direct drop-in interchangeability with OEM components, including cross-references 83009111 and A223721854. Every manufactured unit undergoes 100% full-load simulated testing before dispatch, guaranteeing smooth velocity control, high volumetric efficiency, and exceptional field endurance.

Technical Specifications

• Model Code: MPT046 (Cross-references: MPV046, MPT035, MPT025, MPT044, 83009111, A223721854)

• Platform Architecture: Sauer-Danfoss Series 40 (M46) Hydrostatic Frame

• Displacement: 46.2 cm³/rev (2.82 in³/rev)

• Rated Continuous Pressure: 210 bar (3000 psi)

• Peak Operating Pressure: 350 bar (5000 psi)

• Maximum Drive Speed: 4000 rpm

• Control Options: Direct Displacement Control (DDC) / Manual Servo / Electrical Proportional (EDC)

• Charge Pump Displacement: Integrated 13.3 cm³/rev gerotor charge pump

• Unit Weight: Approx. 28 kg

Key Technical Advantages

• Advanced Bimetallic Metallurgy: Piston shoes and cylinder block interfaces feature micro-ground, nitrided alloy steel combined with sintered bronze valve plates to eliminate wear and thermal galling under high-pressure duty cycles.

• 100% Direct Drop-in Interchangeability: Mounting flanges, shaft splines, port sizes, and control interfaces strictly match original Sauer-Danfoss specifications, allowing instant installation with zero plumbing modifications.

• High Volumetric Efficiency & Integrated Charge Loop: Features an integrated gerotor charge pump and check/relief valves to maintain system anti-cavitation pressure, resulting in reduced fluid heating and volumetric efficiency exceeding 92%.

• 100% Factory Simulated Testing: Every pump is dynamically performance-tested under full continuous pressure and rated speed to confirm zero external leakage and rapid swashplate response.

Application Areas

• Skid Steer Loaders & Compact Equipment: Primary traction pump replacements for Bobcat, Gehl, Mustang, and Caterpillar compact loaders.

• Agricultural & Road Machinery: Hydrostatic drive circuits for self-propelled harvesters, soil compactors, and asphalt pavers.

Expert Maintenance Tips

Flush the hydrostatic loop thoroughly and replace all system filters before mounting the pump. Use ISO VG 46/68 anti-wear hydraulic oil, maintaining oil cleanliness strictly at or above ISO 18/16/13 (NAS Class 8). Always pre-fill the pump housing with fresh, clean hydraulic fluid through the top case drain port prior to initial start-up to protect internal bearings and swashplate friction surfaces against dry wear.