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 |
