Sauer Danfoss PV22 MF22 Pump & Motor | PV21 PV23 MF21 MF23 | Concrete Mixer Hydraulics | MF18-503-35

Sauer-Danfoss Series 20 Piston Pumps & Motors for Concrete Mixers

Product Overview: The Sauer-Danfoss Series 20 (Series 20) is the global industrial benchmark for closed-circuit hydrostatic transmissions. Renowned for its extreme durability and ease of service, this series has become the standard configuration for concrete mixer drum drives worldwide. This selection covers variable displacement pumps PV21, PV22, PV23 and their matching fixed/variable displacement motors MF21, MF22, MF23, including the high-demand model MF18-503-35. Whether in continuous high-temperature operation or frequent reversals on harsh construction sites, the Series 20 provides stable and powerful torque output.

Key Technical Advantages:

• Heavy-Duty Engineering: Designed for long-life operation, featuring reinforced bearings and rotating components built to withstand the massive shocks of fully loaded concrete mixers.

• Closed-Loop Precision: PV pumps utilize swashplate angle adjustment for stepless variable flow, allowing precise control of drum speed and rotation direction when paired with MF motors.

• Superior Power Density: Delivers massive torque within a compact envelope, perfectly suited for the restricted mounting spaces on mixer truck chassis.

• Modular Compatibility: Standardized design ensures that rotor groups, cylinder blocks, and pistons are easily serviceable, significantly reducing total cost of ownership.

• Optimized Configurations: Specific models like MF18-503-35 are optimized for seamless integration with various mixer gearbox brands.

• Target Applications: 6-16m³ Concrete mixer drum drives, road roller propulsion, pavers, and heavy-duty industrial drives.

Detailed Models & Parameters:

• Core Series: Sauer-Danfoss Series 20 (PV/MF).

• Model Keywords: PV21, PV22, PV23, MF21, MF22, MF23, MF18-503-35.

• Technical Specs Decoding:

  • PV22/MF22: The most common mixer configuration (approx. 70cc/rev displacement), ideal for 8-12m³ drums.

  • PV23/MF23: Heavy-duty setup for 14-16m³ large mixers (approx. 89cc/rev displacement).

  • PV21/MF21: Optimized for small-scale mixing equipment or auxiliary drives.

• Pressure Specs: Rated Operating Pressure 350 Bar (5075 PSI), with peak capabilities reaching 420 Bar (6090 PSI).