3931 3933

Eaton 3931 / 3933 — fixed displacement axial piston motor 63.7 cm³

Eaton 3931 and 3933 are fixed displacement axial piston motors of the Series 39, designed for closed-loop hydrostatic drives paired with variable pumps of the same series. They feature low noise levels and extended service life. Primary applications include transit mixer drum drives, as well as road rollers, graders, cranes, lifts, agricultural equipment, pulp & paper and metal industries.

Full model range in the section Eaton Series 39

Technical specifications

• Displacement: 63.7 cm³/rev
• Nominal pressure: 420 bar
• Peak pressure: 480 bar
• Maximum speed: 5380 rpm
• Flow rate: 67.3 GPM (255 l/min)
• Seal: Face Seal (3931) / Lip Seal (3933)
• Weight: 48–52 kg

Installed in equipment

• Transit mixer

  • McNeilus
  • Con-Tech
  • Terex Advance
  • Oshkosh
• Roller / Compactor

  • Dynapac
  • Bomag
  • Hamm
  • Sakai
• Motor grader

  • Caterpillar
  • John Deere
  • Komatsu
• Dozer

  • Caterpillar
  • Case
  • Liebherr
• Equipment types

  • Crane
  • Street sweeper
  • Loader
  • Tractor
  • Windrower
  • Planter
  • Oil & Gas equipment
  • Marine equipment
  • Crusher
  • Pulp & paper industry
  • Metal industry

OEM numbers 3931 / 3933

• Eaton

  • 3933-001
  • 3933-002
  • 3933-053
  • 3933-092
  • 3933-121

Spare parts for Eaton 3931 / 3933

• Cylinder block Rotor
• Ball guide
• Disk Spring
• Friction Plate
• Coupling of drive shaft
• Cylinder block press pin
• Roller Bearing
• Cradle Bearing Set
• Retainer Plate
• Swash plate (cam rocker)
• Piston
• Rotor Spring
• Control Valve Regulator
• Seal kit motor
• Shaft Seal
• Servo Piston
• Drive Shaft motor
• Pressure Override Valve
• Valve plate
• Ball guide washer
• Washer

Repair and service 3931 / 3933

We perform diagnostics and repair of hydraulic motor Eaton 3931 / 3933: checking hydraulic parameters, assessing the condition of the piston group and bench testing after restoration.

Contact us — we will repair hydraulic motor 3931 / 3933 and select genuine spare parts.