Katco Tools
KT KT-OBR Pneumatic Bench Sand Rammer (8.12 lbs, 2,500 BPM, 1" Bore x 2" Stroke)
KT KT-OBR Pneumatic Bench Sand Rammer (8.12 lbs, 2,500 BPM, 1" Bore x 2" Stroke)
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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-OBR Bench Rammer Schematic: Click Here for PDF
KT-XTH Extension Pipe/ Handle Assembly: Click Here for PDF
SPECIFICATIONS
| Model Name | KT-OBR BENCH RAMMER |
| Net Weight | 8.12 lbs (3.7 kg) |
| Length | 17 in (432 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 Compaction
The KT-OBR delivers rapid 2,500 BPM tamping action to tightly compact sand molds, cores, and flasks in metal casting facilities. Its compact 8.12 lb frame allows foundry workers to pack sand evenly around delicate patterns without damaging mold contours.
Utility, Cable & Pipe Trench Backfilling
Engineered for tight utility cuts, this pneumatic rammer compacts backfill soil firmly around buried electrical conduits, plumbing pipes, and gas lines. The focused 2-inch stroke eliminates air pockets and prevents surface settling in narrow underground trenches.
Foundation, Footing & Post Backfilling
Contractors rely on this air tamper to pack soil, crushed aggregate, and gravel tightly around building footings, fence posts, and concrete foundations. Its lightweight, maneuverable design allows operators to tamp confined subgrades where heavy plate compactors cannot reach.
Refractory Lining & Crucible Compaction
Ideal for industrial furnace maintenance, the tool efficiently packs castable refractory cements, clay, and dry lining mixes into ladles and melting furnaces. The continuous high-speed pneumatic impact ensures dense, uniform material distribution for longer refractory service life.
FREQUENTLY ASKED QUESTIONS (FAQ)
What size air compressor is required to run the KT-OBR?
The tool requires an air compressor delivering at least 12 CFM at 90 PSI through a standard 1/2-inch NPT air connection, making it easy to run on small portable jobsite compressors.
What is the recommended operating pressure (PSI)?
Operate the rammer at 90 PSI (6 bar) for optimal compacting force. Do not exceed the 100 PSI (7 bar) maximum limit to prevent internal seal damage and premature wear.
What butt mounting taper does this bench rammer use?
The KT-OBR features an industry-standard 802 taper, allowing seamless compatibility with standard rubber, steel, or aluminum tamping butts.
How do I lubricate and maintain the KT-OBR?
Add a few drops of pneumatic tool oil directly into the 1/2-inch air inlet daily before each shift to keep the cylinder and piston moving smoothly. Always disconnect and bleed the compressed air line before servicing or changing attachments.
