Tunneling jumbos
DT821
- Coverage
- 110.00 m²
- Hole length
- Up to 5.88 m
- Tramming type and distance
- Hydrodynamic transmission - Diesel engine - QSB4.5 (124 kW, Stage IIIA)
Sandvik DT821 is a two-boom jumbo designed for fast, accurate tunneling and cavern excavation drilling. It can be equipped with hydraulic or electronic drilling systems. Automatic functions and optional instrumentation enable productive operations.
Features
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Easy to operate
This tunneling jumbo uses a powerful four-wheel-drive carrier to ensure rapid tramming and good balance. Its universal booms offer greater coverage and full automatic parallelism, while optional utility booms can be added for bolting and utility works.
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Strong feed
The strong feed allows the RD5 series rock drill to deliver optimal performance with a higher consumable life. Operators can use the jumbo for face, cross-cutting and bolt-hole drilling.
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Water-mist flushing
The tunneling jumbo uses an 11 kW water booster pump for water-mist flushing, with a capacity of 200 l/min and a pressure of 10 - 15 bar.
Product specifications
- Coverage
- 110.00 m²
- Hole length
- Up to 5.88 m
- Tramming type and distance
- Hydrodynamic transmission - Diesel engine - QSB4.5 (124 kW, Stage IIIA)
- Number of booms
- 2
- Feed length
- Fixed TF500 12 to 20 ft. or telescopic TFX 6-12 ft. or 10-16 ft.
- Hole diameter (face drilling)
- 43 - 64 mm
- Hole diameter (cut hole)
- 76 - 127 mm
- Rock drill
- RD520 20kW
- Controls type
- THC561, hydraulic
- Weight
- 26,500 kg (depending on options)
Related Products and Services
Parts and components
Rock drills
Rock drills are a highly demanding component to design and manufacture. With decades of dedication and engineering work we have developed our rock drills for harsh conditions and heavy-duty work.
Technology
Remote monitoring service
Remote monitoring service uses intelligent technology that enables the prevention and prediction of breakdowns before they happen.
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Services
We offer different type of service agreements and on demand services that can be adapted to suit the support you require – helping you to maintain your fleet in the optimal way.
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