HEADSHEAVES
Standard Headsheaves
- Supplied one piece or 180 degree split for ease of shipping and installation
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Solid modelled with full FEA review
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Designed for infinite fatigue life
Cluster Sheaves
- Supplied for multi rope koepe friction hoist applications
- Sheaves are 180 degree split design with one sheave keyed to a live shaft. Remaining sheaves are free on greasable or self lubricating bronze bushings
- Heavy duty designs are available for ground mounted hoists. Lighter designs are available for deflection sheaves in tower mounted hoist applications
Compensating Sheaves
- Sheaves, carriages, track structure and full hydraulics
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Hydraulic compensation
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Load measurement
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Rails and support structure
Sinking Sheaves & Double Down Sheaves
- Available in all sizes and custom configurations
- Lined or unlined
Liners
- Bolt in steel liners and UHMWPE plastic “bolt free” liners are available
SKIPS
Our standard arc-gate and bottom dump skips are well suited for almost any application. For specialized situations we also offer, sala, front dump and kimberley skips. NMT skips are fabricated in aluminum, steel and stainless steel or a combination of materials as needed. Our unique design for aluminum skips eliminates the common complaint of cracking welds which are often difficult to repair at remote sites. Corrosive environments and dissimilar metals are mitigated with experienced design, galvanic barriers and sacrificial anodes. Impact and wear are controlled with various rubber impact and high brinell liners.
Arc Gate Skip
- Lowest maintenance of any skip type
- No safety latches to maintain
- Smooth, fast opening
- Ideal for dry, crushed material
Bottom Dump Skip
- Low maintenance workhorse of the mining industry
- Quick change bucket design allows fast bucket change-out for minimal down time
- Liners can be changed safely and conveniently away from the shaft
- Ideal for wet, sticky, uncrushed material
Kimberly Skip
- Low maintenance
- Best payload to weight ratio
- Slower dumping
- Economical and ideal for smaller operations
CAGES
Service & Auxiliary Cages
- Two guide, four guide and rope guide
- Single, double and triple decks
- Safety mechanisms for wood, steel and rope guides
- Standard door types and counterweighted guillotine doors
- Available in aluminum, steel and stainless steel
- Many convenient features available to custom design to your requirements
Trailer Cages
- Quick connect design, in or out in 5 minutes
- Increase skip capability by removing trailer cage during skipping
- Retractable guide wear slippers and guide rollers
- Fast install with only two men, no crane or other equipment required
ROPE ATTACHEMENTS
Thimble Cappels
- Simplify front end rope cuts with drum winders
- Especially convenient for frequent rope adjustments on friction winder systems after routine collar to collar checks
- All materials are supplied with mill test reports and ultrasonic test reports
- All components are inspected via magnetic particle testing after machining
- All cappel designs are proof tested to 2 1/2 x the rated load
- Operating safety factor is 10:1
- Engineer’s OEM certificate of load capacity is provided
Rope Glands
- For maneuvering and tensioning
Chase Blocks
- Straight and articulated
Koepe Adjustment Links
- Fine and coarse adjustment links for friction winders
Solid Thimbles and Clamps
- For lighter conveyances and balance ropes
SHAFT CONVEYANCE SERVICE
NMT offers full service capabilities for all shaft related solutions. We provide 5 year inspections (required by OHSA/MSHA) and recertification on our products and those previously supplied by our competitors.
- Head sheave, skip and cage inspections and recertification.
- Guide rollers, pneumatic, solid or urethane tires, manual adjustment or full suspension with compression and rebound capability
- Roll-on inspection hoods for faster easier installation
- Hydraulic rope de-torquers
- Catch gear
- Arrestors
- Underslung work platforms
- Free fall test tower
- Hydraulic skip dump mechanisms for limited over-wind
- Mechanical and hydraulic chairing
- Conveyance rebuilds on our products and those previously supplied by our competitors
SHAFT SINKING GEAR
We have worked closely with many of the top shaft sinking contractors in the industry and are well known throughout the mining world.
- Multi-deck galloway stages
- Sinking buckets and crossheads
- Collar and safety doors
- Blasting sets
- Portable headframes
- Headframe sinking steel
GALLOWAYS AND WORK STAGES
NMT will work closely with your project team to select and design the optimum shaft sinking solution. We have supplied galloways and work stages to mine operations around the world for over 25 years.
- Standard built with 3 - 5 decks
- Sinking and equipping galloways
- Trial assembly results in faster field set ups
CONCRETE FORMS
For over 25 years, NMT have designed and fabricated numerous site specific concrete forms for world-class mining operations.
- Custom height and diameters
- Tier levels as required to meet clients needs
SHAFT STEEL
We have supplied shaft steel for major projects around the world for over 25 years. We are well known throughout the industry for our consistent high quality product.
NMT played an integral part in developing the first North American shaft steel installation to utilize cantilevered steel guide technology for high speed hoisting. This along with huckbolted steelwork increased flexibility in the guide string thus decreasing stress on the steel work and conveyances. Shaft maintenance was reduced and the life of the mine shaft and equipment extended significantly.
NMT further collaborated with industry experts to develop the bob-tail huckbolt to facilitate steel installation.