PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21

Sauer-Danfoss PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21 — hydraulic pump / motor

Sauer-Danfoss Series 20 pumps in frame sizes PV21, SPV21, PVD21 and SPV2/052 are axial piston units with a swashplate design and variable displacement, designed for closed-circuit hydrostatic transmissions. The swashplate is steplessly adjusted in both directions from the neutral position, varying flow from zero to maximum and providing flow reversal without additional valve fittings. The tandem version PVD21 combines two pump sections on a common shaft for simultaneous supply of two independent circuits. The SMF2/052, M21 and MF21 motors are fixed displacement swashplate units operating in tandem with Series 20 pumps in a unified hydrostatic system. Output shaft speed is determined by working fluid flow, and torque by differential pressure between the working ports.

Full model range in the section Sauer-Danfoss Series 20.

Technical specifications PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21

• PV21 — Variable displacement pump
• SPV21 — Variable displacement pump
• PVD21 — Variable displacement tandem pump
• SPV2/052 — Variable displacement pump
• SMF2/052 — Fixed displacement motor
• M21 — Fixed displacement motor
• MF21 — Fixed displacement motor

Installed in equipment

• Equipment types

  • Industrial equipment
  • Mining equipment
  • Transit mixer
  • Municipal equipment

OEM numbers PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21

• Sauer-Danfoss

  • S20PV21
  • M021
  • 018895
  • 019653
  • 038042
  • 047449
  • 047928
  • 049197
  • 049551
  • 055913
  • 057414
  • 063545
  • 064410
  • 068734
  • 070441
  • 071910
  • 072744
  • 072751
  • 073171
  • 073809
  • 074450
  • 085951
  • 086140
  • 097980
  • 149716
  • 313205
  • 316364
  • 326942
  • 331439
  • 340109
  • 555482

Spare parts for Sauer-Danfoss PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21

• Cylinder block Rotor
• Drive Shaft
• Separation Bush
• Ball guide
• Disk Spring
• Friction Plate
• Snap Ring
• Slider
• Coupling of drive shaft
• Charge Pump
• Cylinder block press pin
• Roller Bearing
• Cradle Bearing Set
• Retainer Plate
• Swash plate (cam rocker)
• Piston shoe
• Piston
• Rotor Spring
• Seal kit pump
• Seal kit motor
• Shaft Seal
• Wire
• Valve plate
• Ball guide washer
• Washer
• Pressure Override Valve
• Control Valve Regulator
• Regulator assembly
• Servo Piston

Repair and service PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21

Diagnostics and repair of pump / motor Sauer-Danfoss PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21: monitoring operating pressure and leaks, inspection of the piston group and valve plate, and bench testing after repair.

Contact us — we will repair PV21 SPV21 PVD21 SPV2/052 SMF2/052 M21 MF21 and select genuine spare parts.