ZDG-3076L500 – 21-3/8-Inch Air Extension Die Grinder
The ZDG-3076L500 Air Extension Die Grinder is a high-performance pneumatic die grinder featuring a durable 21-3/8-inch (543 mm) aluminum alloy extension—ideal for precision grinding and polishing in deep or hard-to-reach areas. Designed for industrial-grade use, it combines power, reach, and versatility for demanding applications.
Key Specifications
| Feature | Specification |
|---|---|
| Motor Power | 1.0 HP |
| Free Speed | 3,500 RPM (low-speed variant) |
| Collet Options | ¼″ (6 mm) and 3/8″ (8 mm) double-angle holders |
| Extended Length | 21-3/8 in (543 mm) |
| Net Weight | 4.5 lbs (2.0 kg) |
| Air Inlet | ¼″ NPT |
| Minimum Hose Size | ⅜″ (10 mm) |
| Air Consumption | ~4.2 CFM |
| Exhaust | Rear exhaust for a clean work environment |
| Grip & Safety Lever | Comfort over-housing with streamlined safety lever |
Advantages & Benefits
Extended Reach & Precision
Its long shaft provides access to deep cavities and tight spaces, making it ideal for polishing rotors, backing plates, and internal mold surfaces.Low-Speed, High-Torque Performance
Operating at 3,500 RPM, this variant is ideal for controlled material removal, especially when paired with flap sanding wheels.Versatile Accessory Compatibility
The dual collet system (6 mm and 8 mm) allows the use of various grinding and polishing attachments tailored to diverse tasks.Ergonomic & Safe Design
Comfortable housing and safety lever design minimize operator fatigue and enhance tool control.Durable Construction & Efficient Air Use
Built for high-demand environments, its aluminum alloy body ensures durability while maintaining efficient operation.
Applications
Ideal for:
Automotive Maintenance – Reaching and refinishing deep engine compartments and brake components.
Mold & Die Work – Finishing internal mold features or die cast parts with precision.
Industrial Fabrication – Addressing confined or recessed areas in large assemblies and machinery.
Model Comparison
| Model | Speed (RPM) | Length | Weight | Best For |
|---|---|---|---|---|
| ZDG-3076L500 | 3,500 | 21-3/8″ | 4.5 lbs | Controlled, precise work in tight spaces |
| ZDG-301L500 | 22,000 | 21-3/8″ | ~4 lbs | High-speed finishing in hard-to-reach areas |
Why Choose the ZDG-3076L500?
When you need controlled precision grinding far into recessed or narrow spaces, this model delivers superior access and performance. The combination of torque, reach, and ergonomic design makes it a standout choice for professionals tackling intricate industrial, automotive, or fabrication challenges.
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: 4.5(2) Ibs(kg)
- Length: 28.3(719) inch(mm)
- rpm: 3500
- 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 |
