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| Customization: | Available |
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| After-sales Service: | Remote Technical Support |
| Warranty: | 1 Year |
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Montabert brand rock drills are currently the leading brand of rock drills, with mature technology, leading technology, and excellent quality. They are widely used in various fields such as mining, tunnel excavation, water conservancy engineering, and road construction. They have the characteristics of high efficiency and high return rate, and can effectively reduce engineering risks and labor intensity.
| Power class | kw | 21 |
| Hole range(typical) (mini-maxi) | mm | 45-76 |
| Strike flow (mini-maxi) | l/mn | 95-118 |
| Strike pressure (mini-maxi) | bar | 165-200 |
| Strike frequency (mini-maxi) | Hz | 55-63 |
| Energy per blow (mini-maxi) | J | 252-330 |
| Power out (mini-maxi) | kw | 14-21 |
| Percussion inlet power(mini-maxi) | kw | 26-39 |
| Rotation motor capacity | cm³ | 100/125/160 |
| Rotation flow motor maxi | l/mn | 48/60/75 |
| Max.rotation speed motor | t/mn | 303/296 |
| Max.rotation torque motor | Nm | 477/597/764 |
| Max.rotation pressure | bar | 210 |
| Water flushing pressure (mini-maxi) | bar | 14-24 |
| Water flushing flow (mini-maxi) | l/mn | 60-120 |
| Front guide lubrication pressure | bar | 3 |
| Front guide lubrication air flow | l/mn | 300 |
| Front guide lubrication oil | cm³/mn | 0.5 |
| Accum.Nitrogen pressure HP | bar | 60 |
| Accum.Nitrogen pressure BP | bar | 5 |
| Recommended oil viscosity | cst | ISO46 |
| Oil viscostiy at working temperature (mini-maxi) | cst | 15-30 |
| Oil operating temperature (mini-maxi) | ºC | 50to75 |
| Thrust feed force (mini-maxi) | N | 11000-13000 |
| Collaring feed force | N | 9000 |
| Collaring strike pressure | bar | 110 |
| Percussion Back pressure | ||
| Recomended without drain | bar | <5 |
| Recommended with drain | bar | <5 |
| Maximum working without drain | bar | 5 |
| Maximum working with drain | bar | 12 |
| Rotation back pressure(maxi.) | bar | 30 |
| ExternalHP line pressure(mini-maxi.) | bar | NOt Available |
| External HP flow approximate when no percussion | l/mn | NOt Available |
| Drain pressure(maxi.)if equipped | bar | 2 |
| Drain flow approximate if equipped | l/mn | 10 |
| Maxi.Retract force with reverse | N | Not Available |
| Percussion(optional)at 100 bar | ||
| Attention: Please consult us before using specific oil(non-inflammable, biodegradable,...). | ||
| This values are given for information, depending of drilling conditions or cofigurations. |



