Katco Tools
KT KT-OBF Pneumatic Floor Sand Rammer
KT KT-OBF Pneumatic Floor Sand Rammer
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FEATURES
- Compact and light weight design make it ideal for compacting small sand molds in a foundry or casting facility.
- Operate in various applications such as foundry molds, backfilling foundations, pipe work, and cable trenching.
- Perfect compacting soil and sand.
SCHEMATIC
KT-OBF Bench Rammer Schematic: Click Here for PDF
SPECIFICATIONS
| Model Name | KT-OBF BENCH RAMMER |
| Net Weight | 14.12 lbs (6.4 kg) |
| Length | 41 in (1041 mm) |
| Bore | 1 in (25 mm) |
| Stroke | 2 in (50 mm) |
| Blows Per Minute | 2500 |
| Taper | 802 |
| Air Inlet (NPT) | 1/2 in (13 mm) |
| Air Consumption* | 12 cfm (.34 m3/m) |
| *estimated |
*For optimum 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
Foundry Sand Mold & Flask Compaction
The KT-OBF delivers rapid 2,500 BPM tamping action to tightly pack large sand molds, floor flasks, and refractory linings in metal casting facilities. Its extended 41-inch stand-up design allows foundry workers to compact floor-level molds with optimal downward force and reduced back strain.
Utility, Cable & Pipeline Trench Backfilling
Engineered for deep and narrow utility cuts, this pneumatic floor rammer compacts backfill dirt firmly around buried gas pipes, electrical conduits, and sewer lines. The focused 2-inch stroke eliminates subgrade voids to prevent surface settling and asphalt collapse along roadway trenches.
Foundation, Footing & Post Backfill Tamping
Contractors rely on this stand-up air tamper to pack soil, crushed aggregate, and gravel tightly around building footings, retaining walls, and fence posts. Its balanced 14.12 lb weight provides the necessary downward compaction energy for confined structural jobsites where heavy plate compactors cannot operate.
Refractory Lining & Industrial Soil Compaction
Designed for demanding industrial maintenance, the tool efficiently packs castable refractories, clay mixes, and soil sub-bases across plant floors and smelting areas. The continuous high-speed pneumatic impact ensures dense, even material layering to extend the service life of refractory installations.
FREQUENTLY ASKED QUESTIONS (FAQ)
What size air compressor is required to run the KT-OBF Floor Rammer?
The tool requires an air compressor delivering at least 12 CFM at 90 PSI through a standard 1/2-inch NPT air hose connection.
What is the recommended operating pressure (PSI)?
Operate the rammer at 90 PSI (6 bar) for optimal performance. Never exceed the 100 PSI (7 bar) maximum limit to prevent internal seal damage and premature wear.
What is the difference between the KT-OBF and the KT-OBR?
The KT-OBF is an extended 41-inch floor rammer weighing 14.12 lbs designed for stand-up ground and floor mold compaction, while the KT-OBR is a shorter 17-inch bench rammer weighing 8.12 lbs built for tabletop and bench work.
What butt mounting taper does this tool use?
The KT-OBF features an industry-standard 802 taper, ensuring seamless compatibility with standard rubber, steel, or aluminum tamping butts.
