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Top hammer rock drills

RD921

Hole size
64 - 89 mm
Percussion power
21 kW
Percussion rate
71 Hz
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Sandvik RD921 is a hydraulic rock drill designed for medium-diameter longhole drilling. It is the smallest of the RD900 series, the most powerful rock drill family in its class, capable of drilling 64 - 89 mm.

Features

Product specifications

Hole size
64 - 89 mm
Percussion power
21 kW
Percussion rate
71 Hz
Percussion pressure
200 bar
Rotation (max.)
200 bar
Rotation motor types
OMT250, OMT315
Weight
340 kg
Rock drill parts

Learn more about RD921 features

Two rotation motor variants

Two rotation motor options meet the rotation torque and RPM requirements in the RD921 application range.

Power extractor

The optional power extractor can be used for opening rock tool joints manually or automatically when using one-hole automation.  

Circulating Shank Lubrication

Optional Circulating Shank Lubrication system can reduce shank lubrication oil consumption up to 300g per hour.  

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