Csm wnc st31 studio01 700 e9d2a9b50e

Wacker Neuson ST31

ST31 Vertical Lift Track Loader

The ST31 offers the power and torque needed for any jobsite. This unit delivers 3,100 pounds of rated operating capacity at 50% and is a class leader with lift height over 125 inches. The machine is equipped with a 74 hp turbo-charged Kohler Tier 4 Final engine offering class leading engine torque . Mechanical Hand-Foot and Selectable EH controls ensures operators with any control preference can efficiently operate the machine. With generous door width and height, visibility of the attachment and the surroundings is superior to the competition.

  • With a top speed of nearly 10 MPH, travel time is reduced giving the operator more time throughout the day to get more tasks completed.
  • Spacious extended cab maximizes room and comfort for the operator to move inside the cab.
  • Quick and easy service access from the forward tilting cab and the arrangement of internal components makes it easy to maintain the machine.
  • Class leading track-on-ground of 57.2" decreases ground pressure while increasing digging performance.
  • Optional high flow hydraulics increase the range of usable attachments improving efficiency and productivity.

Ergonomic Cab Design

  • A wide door and step as well as ergonomically located handles make entry and exit easy regardless of the size of the operator
  • Large, illuminated switches give quick accessibility to controls regardless of the time of day or whether the operator is wearing gloves.
  • With the low mounted tilt cylinders and the spaciously designed door, sloped rear engine compartment, and large side windows, operator visibility is maximized 360º.


  • From switch location and layout to an angled foot rest in the floor board, the cab was purposefully designed to be stay in for long amounts of time and to significantly reduce operator fatigue.
  • Joysticks are mounted to the suspension/air ride seat minimizing unwanted movements in rough conditions.


Operating data 

Height top of ROPS 83 in
Overall length w/ bucket 136.6 in
Overall length w/o bucket 106.6 in
Height Hinge Pin Max 125.5 in
Operating weight  8,095 lb
Rated Operating Capacity ROC 50% 3,100 lb
Rated Operating Capacity ROC 35% 2,170 lb
Dump reach  36 in
Length of track on ground 57.2 in
Dump height max. at max height 97.2 in
Angle of departure  30.7 °
Tipping angle (bucket dump) w/ bucket at max height 42 °
Ground clearance  9.1 in
Breakout force max. - Bucket 5,300 lbf
Breakout force max. - Boom 5,000 lbf
Width  67.1 in
Width Track 12.6 in

Engine / Motor 

Engine / Motor manufacturer  Kohler
Engine / Motor  KDI 2504 TCR
Engine performance  74 hp
Displacement  151.5 in³
RPM / speed  2,750 rpm
Battery  950 CCA
Fuel tank capacity  30 US gal

Hydraulic system  

Auxiliary Hydraulics- Standard Flow  20 US gpm
Auxiliary Hydraulics- High Flow  30 US gpm
Pressure aux. relief 3,500 psi
Hydraulic oil tank  2.9 US gal

Power transmission  

Travel speed low 7 mph
Travel speed high 10 mph