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Australian Forestry Equipment

Stump shear · model vs model

OMEF ST90 vs OMEF ST140

Which stump shear should be matched to the excavator and stump class?

4 specification fieldsReviewed 19 September 2026

Short answer

Which one fits which job?

The ST90 is the lower-mass choice for smaller carriers and common stumps; the ST140 requires a heavier carrier but is the better fit where large stumps are routine. Size to the median work, not the exceptional stump.

Published figures

Specification comparison

Different manufacturers publish different fields. A dash means the equivalent figure is not included in this guide—not zero and not necessarily unavailable.

SpecificationOMEF ST90OMEF ST140
Carrier class12-20 t20-35 t
Weight1,600 kg2,500 kg
Opening900 mm1,400 mm
Cylinder forceup to 70 tup to 90 t

Decision gates

The figures that should decide this comparison

  • Excavator class and payload at reach
  • Median stump diameter and species
  • Required auxiliary flow
  • Handling and disposal method after splitting

Commercial fit

Where each model earns its place

OMEF ST90

Mid-size stump shear for 12-20 t carriers — 900 mm opening, up to 70 t cylinder force.

  • Plantation conversion and re-establishment where root mass must come out
  • Sites with a biomass destination for extracted stump material
  • Carriers genuinely in the 12-20 t class with the counterweight to work at reach

OMEF ST140

Heavy stump shear for 20-35 t carriers — 1,400 mm opening, up to 90 t cylinder force.

  • Large-scale clearing, biomass recovery and plantation preparation
  • Large stumps where the ST90's 900 mm opening would be the limit
  • Operations with high stump density where stumps per hour drives the rate

Full due diligence

Open both model buyer guides

OMEF

ST90

Specifications, commercial fit, ownership considerations and checks before signing.

OMEF

ST140

Specifications, commercial fit, ownership considerations and checks before signing.

Do not compare these models outside the production system

The winning specification can still produce the higher whole-life cost if another machine, the landing or haulage constrains its output. Recheck the stump shears buying guide and calculate cost per saleable unit at your contracted hours.