- Bolting coverage
- 5.3 x 2.0 m
- Hole length
- Up to 25 m
- Tramming type and distance
- Hydrodynamic transmission - Diesel engine - OM904LA (110 kW, Tier 3, Stage IIIA)
Sandvik DS421 is a self-contained cable-bolting rig for rock reinforcement in underground mines and tunnels with small and medium cross-sections. The full bolting cycle can be operated by one person working safely under the canopy or in a soundproof, air-conditioned cabin.
Easy maintenance from the ground
Daily and routine checks are carried out with both feet on the ground, access to main components is easy for increased safety.
Onboard cement mixer
The onboard cement mixer, cement bag platform or optional cement silo and steel strand reel mean the rig is autonomous for longer than one shift.
Safe drilling operations
The operator station is equipped with front protection bars to protect the operator from loose or flying rocks.
Learn more about DS421 features
The rear stinger on the cable bolting head maximizes drilling speed and accuracy. The flexible installation sequence increases efficiency. The strong feed provides stability to the rock drill and drill string for better hole accuracy and rock tool lifetime.