ZDG-301L800 – 31-1/2-Inch Air Extension Die Grinder
The ZDG-301L800 Air Extension Die Grinder is a professional-grade air die grinder featuring an ultra-long 31-1/2-inch (800 mm) steel shaft designed for high-speed grinding and polishing in deep, hard-to-reach areas. Engineered with an aluminum alloy body and an ergonomic grip, this tool provides both precision and comfort in industrial environments.
Specifications
| Feature | Specification |
|---|---|
| Motor Power | 1 HP |
| Free Speed | 22,000 RPM |
| Collet Options | ¼″ (6 mm) and 3/8″ (8 mm) double-angle collet holders |
| Length | 31-1/2 in (943 mm) |
| Net Weight | 4.9 lbs (2.2 kg) |
| Air Inlet Size | ¼″ NPT/PT |
| Minimum Hose Size | ⅜″ (10 mm) |
| Air Consumption | Approximately 4.2 CFM |
| Exhaust | Rear exhaust |
| Grip & Controls | Comfort grip with streamlined safety lever |
| Construction | Durable aluminum alloy body |
Key Advantages
Extended Reach
With its long shaft, the ZDG-301L800 excels in accessing recessed machinery, engine compartments, molds, and internal components where standard grinders can’t reach.High-Speed Performance
Delivers 22,000 RPM to enable quick grinding and polishing while retaining procedural accuracy.Versatile Collet Compatibility
Accommodates both 6 mm and 8 mm grinding bits for a wide range of polishing and finishing applications.Ergonomic Design & Safety
Features a comfortable grip housing and a well-positioned safety lever for ease of operation and fatigue reduction.Cleaner Handling
Rear exhaust design diverts airflow away from the user’s hand for improved handling and work surface cleanliness.
Application Scenarios
Perfect for:
Automotive: polishing brake pad mounts, rotors, and inner body panels.
Industrial: cleaning molds, die interiors, and confined metal fabrication areas.
Machinery Maintenance: finishing internal engine or machine components with depth constraints.
Quick Model Comparison
| Model | RPM | Length | Weight | Ideal Use Case |
|---|---|---|---|---|
| ZDG-301L800 | 22,000 RPM | 31-1/2 in | 4.9 lbs | High-speed precision in hard-to-reach areas |
| ZDG-3076L800 | 3,500 RPM | 31-1/2 in | 5.5 lbs | Lower-speed grinding with more torque |
Why Choose the ZDG-301L800?
If your work involves deep cleaning, finishing, or polishing in narrow, confined environments, the ZDG-301L800 stands out as a top-tier tool. With its extended reach, powerful motor, and ergonomic features, it’s built to deliver precision and efficiency in demanding industrial 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: 4.9(2.2) Ibs(kg)
- Length: 37.1(943) 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 |
