2025 Wacker Neuson ST31

1. Purpose & Performance
The ST31 is a compact, vertical-lift track loader that delivers the performance of a medium-frame unit while maintaining maneuverable, compact dimensions.
Built for material handling, it excels in construction, agriculture, landscaping, and municipal applications.

Powered by a 74 hp (55 kW) turbocharged Kohler KDI 2504 TCR Tier 4 Final engine, it delivers strong torque with regeneration-free emissions control via passive DOC and EGR systems—eliminating heat spikes and downtime for regeneration.

2. Lift & Capacity
Vertical lift arm with class-leading hinge-pin height of 125 in (3.18 m) for efficient truck and pallet loading

Rated Operating Capacity (50% tip load): ~3,100 lb (1,406 kg)

35% rating: ~2,170 lb (984 kg)

Tip load: ~6,200 lb (2,812 kg)

3. Dimensions & Mobility
Operating weight: ~8,095–8,240 lb (3,672 kg)

Length with bucket: ~136 in (3.44 m)

Length without bucket: ~107 in (2.72 m)

Width over tracks: 64 in (163 cm) standard; optional up to 67 in (170 cm)

Height to top of cab: 82.8 in (2.11 m) with ROPS

Ground clearance: ~9 in (23 cm)

Dump reach at max height: ~38 in (1 m)

4. Operator Comfort & Controls
Choice of mechanical hand-foot controls or electro-hydraulic joysticks with selectable ISO or H-patterns and adjustable sensitivity

5.7-inch full-color display for machine settings, diagnostics, maintenance reminders, and optional backup camera integration

Excellent visibility via low-mounted cylinders, wide door, sloped engine compartment, and large side windows

Spacious cab with ergonomic layout, angled footrest, and integrated joystick/seat/armrest assembly to reduce fatigue

5. Durability & Maintenance
Forward-tilting cab and swing-up cooling package for easy access to engine, hydraulics, and filters

Variable-speed cooling fan for faster warm-up, reduced noise, and improved efficiency

Engine backed by a 4-year / 4,000-hour warranty, ensuring long-term reliability

6. Performance Summary
Travel speed: ~7 mph (11 kph) low range; ~10 mph (16 kph) high range

Hydraulic pump flow / pressure: ~20–30 gal/min (76–114 L/min) at ~3,480 psi

Breakout forces: Bucket ~5,611 lbf; Lift arm ~5,546 lbf

Tractive effort: ~9,874 lbf

At-a-Glance Specifications
Category Specification
Engine Kohler KDI 2504 TCR, 74 hp (55 kW), Tier 4 Final
Rated Operating Capacity ~3,100 lb (1,406 kg)
Lift Height (Hinge Pin) ~125 in (3.18 m)
Operating Weight ~8,095–8,240 lb (3,672 kg)
Dimensions (L×W×H) ~136 in × 64–67 in × 83 in
Travel Speed ~7–10 mph (11–16 kph)
Breakout Force (Bucket) ~5,600 lbf (2,540 kg)
Fuel Capacity ~30–35 gal (114–132 L)
Warranty 4 years / 4,000 hours (engine)