Alpha COTR-03 Pneumatic Reversible Cut-Off Tool
Pickup currently unavailable at Dynamic Stone Tools Warehouse (Manassas Park, VA)
Description
Description
Alpha® COTR-03 Pneumatic Reversible Cut-Off Tool
The Alpha® COTR-03 is a compact 8-1/16" pneumatic cut-off tool with a special reversible hub: a single collar reverses the cutting wheel between left- and right-hand rotation so the operator can always direct sparks and debris away from the body. A 0.85 HP (0.63 kW) motor spins a 3" (75mm) abrasive wheel at 20,000 RPM, with rear exhaust and a safety throttle lever. The tool ships with an Alpha® Ultracut ABM 3" blade (ABM0338), a 14–19 mm double-ended spanner and a 4 mm hex key for wheel changes — ready to work straight out of the case.
Features
- Reversible wheel rotation — switch direction with a single collar
- Direct sparks and debris away from the operator on either hand
- Compact 8-1/16" body for tight metal-fabrication work
- 0.85 HP (0.63 kW) motor — 20,000 RPM free speed
- Rear exhaust design keeps debris and oil mist clear of the cut
- Safety throttle lever prevents accidental start-up
- Ships with Ultracut ABM 3" blade (ABM0338), 14–19 mm spanner and 4 mm hex key
- One year manufacturer tool warranty
| Part No. | Power | Free Speed | Disc Size | Length | UPC |
|---|---|---|---|---|---|
| COTR-03 | 0.85 HP (0.63 kW) | 20,000 RPM | 3" (75mm) | 8-1/16" (204mm) | 749173560187 |
- Connect a clean, dry, lubricated compressed-air supply to the 1/4" NPT inlet (3/8" ID hose).
- Regulate air pressure to 90 PSI (6.2 bar) at the tool inlet.
- Rotate the directional collar to select left- or right-hand wheel rotation so sparks travel away from your body.
- Mount a 3" (75mm) cut-off wheel with a 3/8" (10mm) arbor using the included spanner and hex key.
- Wear ANSI-rated eye and hearing protection and cut-resistant gloves.
- Bring the wheel to full speed before contacting the workpiece; let the wheel cut — do not side-load or twist.
- For directional changes during a job, stop the tool, switch the collar, then restart.
- Add a few drops of pneumatic tool oil at the air inlet daily (end of shift) to lubricate the motor.
- Note: the COTR-03 is not designed for flush cutting due to its direct-drive geometry.
3" (75mm) — Pneumatic Reversible Cut-Off Tool — COTR-03
| Part No. | COTR-03 |
| UPC | 749173560187 |
| Size | 3" (75mm) |
| Type | Pneumatic Reversible Cut-Off Tool |
| Max RPM | 20,000 RPM |
| Recommended For | Metal fabrication, automotive restoration, directional-spark applications |
| Packaged Weight | 2.55 lbs |
| Package Dimensions | 9.5" x 5" x 3.5" |
| Commodity Code | 8464.20.0120 |
| Country of Origin | Taiwan |
| Property | Detail |
|---|---|
| Tool Type | Pneumatic Reversible Cut-Off Tool |
| Motor Power | 0.85 HP (0.63 kW) |
| Free Speed | 20,000 RPM |
| Wheel Size | 3" (75mm) |
| Arbor | 3/8" (10mm) |
| Length | 8-1/16" (204mm) |
| Weight (Tool) | 2.0 lbs (0.9 kg) |
| Air Inlet | 1/4" NPT |
| Recommended Hose ID | 3/8" (10mm) |
| Air Consumption | 4 CFM (113 L/min) |
| Recommended Operating Pressure | 90 PSI (6.2 bar) |
| Noise Level | 83 dB(A) |
| Reversible | Yes — collar-actuated, left or right rotation |
| Included | Ultracut ABM 3" blade (ABM0338), 14–19 mm spanner, 4 mm hex key |
| Country of Origin | Taiwan |
| Warranty | 1 Year (Tool) |
What size compressor does the COTR-03 need?
A 3 HP or larger garage-grade compressor is sufficient. Air consumption is 4 CFM at 90 PSI.
What makes the COTR-03 "reversible"?
A single collar at the head reverses wheel rotation between left- and right-hand, so the operator can always direct sparks and debris away from the body.
Can it perform flush cutting?
No. The direct-drive design does not allow flush cutting.
Does it include an Ultracut ABM blade?
Yes — one Ultracut ABM 3" blade (ABM0338) ships with every tool, along with a 14–19 mm spanner and a 4 mm hex key.
Is a dust shroud available?
No dust shroud is currently available for this tool.
Can I use it on the jobsite?
Yes, anywhere compressed air rated for 4 CFM at 90 PSI is available.
What maintenance does it need?
Apply a few drops of pneumatic tool oil at the designated oil port at the end of each shift to lubricate the motor.
No product-specific videos are currently available from the manufacturer or DST.
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
