Katco Tools
KT KT-RD50 Pneumatic Sinker Rock Drill
KT KT-RD50 Pneumatic Sinker Rock Drill
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FEATURES
- 50 lb Class Rock Drill.
SCHEMATIC & PARTS LIST
KT-RD50 Schematic: Click Here
SPECIFICATIONS
| Model Number | KT-RD50 |
| Net Weight | 53 lbs (24 kg) |
| Length | 23 in (584 mm) |
| Bore | 2.64 in (67 mm) |
| Stroke | 2 in (51 mm) |
| Blows Per Minute | 1980 |
| RPM | 180 |
| Chuck Sizes | 1 x 4 1/4 in (25 x 108 mm) 7/8 x 4 1/4 in (22 x 108 mm) 7/8 x 3 1/4 in (22 x 83 mm) |
| Air Inlet (NPT) | 3/4 in NPT (19 mm) |
| Air Consumption* | 102 cfm (48 l/m) |
| *estimated | |
| Oil Tool | Use ISO Grade 150 Tool Oil in Breakers |
*For optimal performance, do not operate tool above 90 PSI (6 bar) working pressure.
WARNING: Always disconnect the air supply before changing chisels or dismantling the tool for service or repair. For maximum safety, we advise the installation of a shut-off valve at the end of the air line.
Do NOT exceed 100 PSI (7BAR) working pressure.
APPLICATION
Quarrying & Dimensional Stone Extraction
The KT-RD50 delivers 1,980 BPM paired with 180 RPM rotation to bore deep, straight blast and wedge holes into solid granite, limestone, and hard rock formations. Its 50 lb class weight provides operators with the ideal balance of downward drilling force and maneuverability on open quarry benches.
Underground Mining & Tunnel Excavation
Engineered for rugged underground conditions, this pneumatic sinker drill efficiently bores blast holes for heading advancement, drift development, and shaft sinking operations. The heavy-duty 2.64-inch bore design quickly powers through hard rock strata to speed up underground excavation cycles.
Utility Trenching & Pipeline Rock Breaking
Contractors rely on this air rock drill to penetrate stubborn bedrock, cap rock, and dense boulders during foundation prep, utility trenching, and pipeline installations. The high-speed rotation and impact energy quickly prepare hard rock for secondary breaking or hydraulic splitting in municipal jobsites.
Heavy Civil Construction & Anchor Hole Drilling
Designed for structural infrastructure, the tool drills precise anchoring, grouting, and dowel holes directly into heavy concrete footings, bridge piers, and retaining walls. Its versatile chuck size options ensure compatibility with industry-standard drill steels and carbide cross bits for deep drilling tasks.
Frequently Asked Questions (FAQ)
What size air compressor is required to operate the KT-RD50 Rock Drill?
The KT-RD50 requires an air compressor that delivers at least 102 CFM at 90 PSI through a standard 3/4-inch NPT air line. Use a 125+ CFM industrial compressor for smooth, continuous drilling without pressure drop.
What is the maximum operating pressure (PSI)?
Operate the drill at 90 PSI (6 bar) for optimal performance. Never exceed the 100 PSI (7 bar) limit to prevent premature internal wear, seal failure, and safety risks.
What chuck sizes and drill steel shank options are available?
The drill accommodates three standard chuck configurations: 1" × 4-1/4", 7/8" × 4-1/4", and 7/8" × 3-1/4", allowing seamless compatibility with your existing rock drill steel and bits.
What type of oil should I use for lubrication and maintenance?
Use ISO Grade 150 pneumatic rock drill oil through an inline lubricator to protect internal pistons and rifle bars. Always shut off and bleed air line pressure before changing drill steel or servicing internal parts.
