ZDG-301L300 – 12-Inch Air Extension Die Grinder
The ZDG-301L300 Air Extension Die Grinder is a high-speed, industrial-grade air die grinder featuring a 12-inch (305 mm) anodized aluminum alloy extension. Designed for precision grinding and polishing in deep or hard-to-reach areas, this tool combines power, reach, and ergonomics to deliver exceptional performance across demanding professional applications.
Key Specifications
| Feature | Specification |
|---|---|
| Motor Power | 1.0 HP |
| Free Speed | 22,000 RPM |
| Collet Compatibility | Dual-angle holders: ¼″ (6 mm) & 3/8″ (8 mm) |
| Length | 17.5 in (445 mm) extension shaft |
| Net Weight | 2.9 lbs (1.3 kg) |
| Air Inlet | ¼″ NPT |
| Minimum Hose Size | ⅜″ (10 mm) |
| Average Air Consumption | ~4.2 CFM |
| Exhaust Type | Rear exhaust for cleaner operation |
| Ergonomic Feature | Comfort grip over-housing with streamlined safety lever |
| Construction | Durable aluminum alloy shaft |
Advantages & Benefits
Extended Reach with Precision
Offers 17.5 inches of extended shaft to access recessed, narrow, or delicate areas effortlessly—ideal for engine bays, molds, and internal components.High-Speed Performance
Equipped with a 1.0 HP motor and a 22,000 RPM free-speed output for fast and efficient grinding and polishing.Versatility
Compatible with both 6 mm and 8 mm collets, this tool supports a wide range of accessories for various surface finishing applications.Comfort & Control
Ergonomic comfort grip and strategically positioned safety lever help reduce user fatigue during extended use.Clean Workspace
Rear exhaust design maintains cleaner air around the tool and the user’s hand.
Recommended Applications
Excellent for:
Automotive Maintenance — Polishing brake components, backing plates, and engine internals.
Mold, Die & Tooling Work — Finishing internal contours and recessed surfaces.
Industrial Fabrication & Maintenance — Accessing and refining components in tight machinery assemblies without disassembly.
Quick Comparison
| Model | RPM | Length (in) | Weight (lbs) | Ideal Use Case |
|---|---|---|---|---|
| ZDG-301L300 | 22,000 | 17.5 | 2.9 | High-speed precision in moderately recessed areas |
| ZDG-301L500 | 22,000 | 27 | 3.9 | Greater reach for deeper access |
| ZDG-301L800 | 22,000 | 37.1 | 4.9 | Long-reach industrial applications |
Why Choose the ZDG-301L300?
When you require fast, accurate grinding in moderately recessed spaces, the ZDG-301L300 earns its place as a go-to solution. It offers a compelling mix of reach, performance, and ergonomic comfort—making it a valuable addition to any tool arsenal for industrial, automotive, or precision finishing tasks.
Benefits
- Industrial extended shaft long die grinder design for high-speed grinding& polishing in hard-to-reach areas
- By using 1/4″( 6mm) or 3/8″(8mm) Double Angle Collets, the die grinder can be used in a wide range of grinding and polishing applications with various wheels
- 4000rpm models are excellent for grinding applications with a flap sanding wheel
- High productivity
- Highest durability in demanding applications
Features
- 12″ (305 mm), 21-3/8″ (543 mm), 31-1/2″ (800 mm) extended body by Aluminum alloy structure.
- Comfort grip over-housing
- Streamlined safety lever
- Rear exhaust
- 1/4″ (6mm) & 3/8″ (8mm) industrial grade Double Angle collet holder
- 1.0 hp motor
- 22,000 rpm free speed models and 3,500 rpm free speed models
 | |
| ZST-200E-29 6mm COLLET ZST-200E-29-1 1/4″ COLLET | ZST-200E-29-2 8mm COLLET ZST-200E-29-4 3/8″ COLLET |
Specification:
- 1HP Die Grinders
- Collet size: 1/4(6) inch(mm)
- Net Weight: 2.9(1.3) Ibs(kg)
- Length: 17.5(445) inch(mm)
- rpm: 22000
- Air Inlet: 1/4 inch
- Min.Hose Size: 3/8(10) inch(mm)
- Avg. Air Cons.: 4.2 cfm
* The length of the extended body can be customized to extend as required.
| Model | Collet size inch(mm) | Net Weight lbs(kgs) | Length inch(mm) | rpm | Air Inlet inch | MinchHose Size inch(mm) | Avg. Air Cons. cfm |
| ZDG-301L300 | 1/4(6) | 2.9(1.3) | 17.5(445) | 22000 | 1/4 | 3/8(10) | 4.2 |
| ZDG-301L500 | 1/4(6) | 3.9(1.8) | 27(688) | 22000 | 1/4 | 3/8(10) | 4.2 |
| ZDG-301L800 | 1/4(6) | 4.9(2.2) | 37.1(943) | 22000 | 1/4 | 3/8(10) | 4.2 |
| ZDG-3076L300 | 1/4(6) | 3.5(1.6) | 18.7(477) | 3500 | 1/4 | 3/8(10) | 4.2 |
| ZDG-3076L500 | 1/4(6) | 4.5(2) | 28.3(719) | 3500 | 1/4 | 3/8(10) | 4.2 |
| ZDG-3076L800 | 1/4(6) | 5.5(2.5) | 38.3(974) | 3500 | 1/4 | 3/8(10) | 4.2 |
