Scaling is one of the more hazardous underground mining processes. Scaling activities are frequently performed in areas with unsupported back, rib and face rock surfaces.  Inherent in the process of scaling is the presence of loose material that can dislodge from the rock surface and injure workers or damage mining equipment.  Because of the dangers, proper mechanized scaling methods and equipment are critical to safety and productivity in the mining process.  Getman purpose-built scalers are designed and built to perform rigorous scaling activities safely and effectively. Dedicated scaling machines incorporate specific features designed to protect the scaler operator that may not be present in non-scaling equipment.

Rock drill rigs are NOT designed specifically for scaling, and when used during scaling operations significant damage and downtime can result from rock falls and improper utilization of the drilling rig machine.  Using drill rigs as scaling machines can result in direct and indirect costs including:

  • Unnecessary overuse of drill consumables, including: bits, rods, couplings and adaptors
  • Excessive boom maintenance caused by rock fall damage
  • Decreased productivity as a result of drill rig down time caused by rock fall damage
  • Reduced development advance or production tonnage caused by improper drill rig utilization or down time

The use of a dedicated mechanized scaler unit avoids the costs associated with drill rig scaling.  The efficiency and productivity of dedicated and purpose-built scalers allows for more complete and efficient scaling operations, and minimizes lost time resulting from the introduction of additional equipment to the mining cycle.

Finally, in multiple heading situations it is possible to use numerous pieces of equipment simultaneously in different headings and stages of the production cycle.  Dedicated mechanical scalers enable utilization of drill rigs in different headings while the mechanical scaler performs scaling functions, increasing drill rig utilization.


  • Equipped with a replaceable tooth and operated with a dual-acting hydraulic cylinder
  • Capable of up to 8,165kg (18,000lbs) prying force
  • Internal gear rotator provides up to 180° of rotation
  • Multiple pick variations available depending on scaling heights


  • Up to 678N·m (500ft·lb) force at a range of 1,000 to 1,250 blows per minute
  • High-strength, reinforced 500mm x 500mm rectangular section, telescopic boom
  • Roller tracking system that captures the inner boom section
  • Six (6) robust eccentric roller bearings which can be adjusted quickly without any disassembly
  • Inner boom sections stay centered to avoid rubbing contact
  • Boom extension cylinders located inside the boom to minimize damage and wear
  • Replaceable bushings in main boom pivot
  • Hydraulic hoses are supported below boom to minimize exposure to falling rock
  • Falling material over the boom is deflected to the ground instead of sliding down the length of the boom
  • Three versions (20ft, 24ft, 30ft) to optimize boom reach and coverage for the actual dimensions of galleries (CSS only available with 20ft boom)

Scaler Catalog (Updated: Dec. 15, 2015)


S320 Scaler
Min Intersection: 4.39 m into 4.39 m (14.5 ft into 14.5 ft)
Min Scaling Drift Width: 5.5 m (18 ft)

Min Intersection: 4.9 m into 4.9 m (16 ft into 16 ft)
Min Scaling Drift Width: 6.7 m (22 ft)

Min Intersection: 5.46 m into 5.46 m (18 ft into 18 ft)
Min Scaling Drift Width: 7.6 m (25 ft)

Scaler S3120

S3120 Scaler View 1

Min Intersection: 3.91 m into 3.91 m (12.8 ft into 12.8 ft)
Min Scaling Drift Width: 3.5 m (11.5 ft)