ZDG-3076L800 – 31-1/2-Inch Air Extension Die Grinder
The ZDG-3076L800 Air Extension Die Grinder is an industrial-grade air-powered micro die grinder featuring an ultra-long 31-1/2-inch extension shaft—perfect for precision grinding and polishing tasks in deeply recessed or hard-to-reach areas. Crafted with an aluminum alloy body, it strikes a balance between durability and manageable weight, making it invaluable for professionals in the automotive, aerospace, mold-making, and maintenance industries.
Key Specifications
| Feature | Specification |
|---|---|
| Motor Power | 1.0 HP |
| Free Speed | 3,500 RPM |
| Collet Options | ¼″ (6 mm) & 3/8″ (8 mm) Double-Angle holders |
| Length | 38.3 in (974 mm) |
| Net Weight | 5.5 lbs (2.5 kg) |
| Air Inlet | ¼″ NPT |
| Min. Hose Size | ⅜″ (10 mm) |
| Average Air Consumption | 4.2 CFM |
| Exhaust | Rear exhaust for cleaner handling |
| Grip & Safety | Comfort over-housing with streamlined safety lever |
Advantages & Benefits
Extended Reach – With its long shaft, the tool excels in tasks like die and rotor cleaning, brake pad mount refinishing, and internal surface polishing.
Powerful Performance – The 3,500 RPM speed is well-suited for controlled grinding, especially when equipped with flap sanding attachments.
Dual Collet Flexibility – Accommodates both 6 mm and 8 mm accessories, providing a versatile range of applications.
Durable & Comfortable – Aluminum alloy construction paired with an ergonomic grip ensures longevity and ease of use.
Safe Design – The rear exhaust design and streamlined safety lever enhance operator safety and comfort during use.
Applications
Ideal for:
Automotive repairs—particularly deep or hidden components.
Manufacturing—finishing molds, dies, engine parts, and other precision machining components.
Maintenance and fabrication work in enclosed or narrow spaces.
Model Comparison Overview
| Model | Free Speed | Length (in) | Weight (lbs) | Best Suited For |
|---|---|---|---|---|
| ZDG-3076L800 | 3,500 RPM | 31.5 | 5.5 | Low-speed precision in deep, confined areas |
| ZDG-301L800 | 22,000 RPM | 31.5 | 4.9 | High-speed applications in hard-to-reach locations |
The ZDG-301L800 is the high-speed counterpart—offering much faster grinding (22,000 RPM), while the ZDG-3076L800 prioritizes control and precision in extended-reach scenarios.
Why Choose the ZDG-3076L800?
Suppose your work demands precision grinding at depth—whether inside machinery, mold cavities, or large assemblies—the ZDG-3076L800 delivers reach, power, and flexibility in one tool. Its thoughtful features ensure you meet high standards of finish and accuracy in challenging workspaces.
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: 5.5(2.5) Ibs(kg)
- Length: 38.3(974) 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 |
