ZRAG-366B – 4-inch Reversible Air Axial Grinder
The ZRAG-366B is a high-performance industrial air axial grinder engineered for versatility, power, and operator safety. With its reversible rotation feature, this grinder offers enhanced flexibility for grinding, cutting, and finishing tasks across multiple materials. Built with heavy-duty components, it is suitable for demanding use in metalworking, fabrication, shipbuilding, construction, and maintenance applications.
Specifications
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Wheel Size: 4″ (100 mm)
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Spindle Thread: 5/8″–11 or M10 × 1.5 (varies by model)
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Free Speed: ~12,000 rpm
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Air Inlet: ¼″ NPT
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Average Air Consumption: ~6–8 CFM (170–230 L/min)
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Operating Air Pressure: 90 psi (6.2 bar)
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Net Weight: ~4.4 lbs (2.0 kg)
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Exhaust Type: Rear exhaust for reduced dust and debris exposure
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Reversible Direction: Forward & reverse switch for multi-functional use
Key Features & Benefits
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Reversible Operation – Switchable forward and reverse modes for maximum flexibility in grinding and cutting.
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High Power & Speed – Efficient material removal with up to 12,000 rpm.
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Safety First – Includes adjustable wheel guard and safety throttle lever.
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Ergonomic Grip – Designed for two-hand stability and reduced fatigue during extended use.
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Rear Exhaust – Directs air away from the work surface for improved operator comfort.
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Heavy-Duty Build – Rugged construction ensures long service life in industrial environments.
Applications
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Metal Fabrication – Grinding weld seams, cutting steel plates, and prepping surfaces.
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Shipbuilding & Construction – Heavy-duty grinding and cutting in large-scale projects.
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Automotive & Aerospace – Ideal for repair, maintenance, and component preparation.
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General Industry – Ideal for workshops and maintenance departments that require reliable air grinding solutions.
Why Choose the ZRAG-366B?
The ZRAG-366B stands out for its power, durability, and reversible function, offering professionals the flexibility to handle multiple tasks with one tool. Built to endure demanding workloads, it’s the perfect choice for operators needing a rugged, reliable, and versatile air axial grinder.
- The newly designed lower-profile axial cutter provides versatile cutting applications.
- Best for restricted areas.
- Lightweight ensures fatigue-free use.
- Spindle lock for disc replacement.
| Model | Cutting Wheel |
Net Weight lbs(kgs) |
Length inch(mm) |
rpm | Air Inlet inch |
MinchHose Size inch(mm) |
Avg. Air Cons. cfm |
| ZRC-361R | 3″ | 2(0.9) | 8(205) | 18000 | 1/4 | 3/8(10) | 3.6 |
| ZRAC-365B | 4″ | 2.4(1.1) | 14.5(370) | 15000 | 1/4 | 3/8(10) | 3.6 |
| ZRAG-366B | 4″ | 2.4(1.1) | 9.4(240) | 13000 | 1/4 | 3/8(10) | 3.6 |
| ZRAG-367B | 4″ | 2.4(1.1) | 9.4(240) | 15000 | 1/4 | 3/8(10) | 3.6 |



