ZDG-376AL – 12-Inch Low-Speed Air Extension Die Grinder
The ZDG-376AL Air Extension Die Grinder is a precision low-speed pneumatic die grinder equipped with a 12-inch (305 mm) extension shaft, ideal for deep-access grinding tasks. Designed for industrial-grade applications, this tool strikes a balance between reach, control, and comfort—perfect for professionals working in confined or recessed environments.
Key Specifications
| Feature | Specification |
|---|---|
| Motor Power | 0.5 HP |
| Free Speed | 3,600 RPM |
| Collet Sizes | ¼″ (6 mm) and ⅜″ (8 mm) double-angle |
| Extended Shaft Length | 12 in (305 mm) |
| Net Weight | 2.2 lbs (1 kg) |
| Air Inlet Size | ¼″ NPT / PT |
| Minimum Hose Size | ⅜″ (10 mm) |
| Air Consumption | ~3.5 CFM |
| Exhaust | Rear exhaust for a cleaner workspace |
| Ergonomics & Safety | Cushion grip, power/speed regulator, twin-bearing spindle (<0.05 mm concentricity), low vibration |
Advantages & Benefits
Extended Reach with Control
The 12-inch extension allows you to work deeply into confined machinery, fixtures, or molds while maintaining accuracy and operator comfort.Torque-Focused Low-Speed Performance
With a modest 3,600 RPM output, the grinder delivers better control and torque—ideal for delicate operations using flap sanders or softer materials.Versatile Accessory Options
Dual-angle collet compatibility (6 mm and 8 mm) makes the tool adaptable to a wide range of grinding and polishing attachments.Comfort by Design
Equipped with an ergonomic cushion grip, speed regulator, and rear exhaust, this model enhances operator comfort and reduces fatigue during extended use.Precision Touch
The twin-bearing spindle reduces vibration and ensures concentricity under 0.05 mm for ultra-smooth operation.
Ideal Applications
Automotive Interiors – Detailing brake mounting areas, inner engine components, and tight chassis spaces.
Mold & Die Maintenance – Polishing and cleaning intricate internal features in complex tooling.
Industrial Fabrication & Maintenance – Reaching complex internal assemblies without disassembly.
Quick Comparison Table
| Model | RPM | Shaft Length | Weight | Best For |
|---|---|---|---|---|
| ZDG-376AL | 3,600 | 12″ (305 mm) | 2.2 lbs | Low-speed, torque-rich finishing in deep areas |
| ZDG-301L300 | 22,000 | 17.5″ | 2.9 lbs | Rapid finishing with moderate reach |
| ZDG-3076L300 | 3,500 | 18.7″ | 3.5 lbs | Controlled grinding with longer access |
Why Choose the ZDG-376AL?
The ZDG-376AL is an excellent pick for professionals needing tough, precise grinding deep within assemblies—where careful torque, clean airflow, and ergonomic design matter most. It brings low-speed finesse and extended reach without compromising on durability or comfort.
- Ergonomic cushion-grip handle-Insulates against cold temperature in the hand, helps ease user fatigue, and insulates against vibration.
- Power/Speed Regulator-Allows for easy rpm adjustment.
- Rear exhaust-Directs the exhaust away from the user and the working areas.
- Twin-Bearing Spindle – This high-quality design results in super-precise spindle concentricity, with less than 0.05mm deviation, and minimal vibration.
- The die grinder comes with 1/4″(6mm) or 3/8″(8mm) double-angle collets for industrial applications.
 |
| ZST-200E-29 6mm COLLET ZST-200E-29-1 1/4″ COLLET |
| Model | Collet Size inch(mm) | Net Weight lbs(kgs) | Length inch(mm) | rpm | Air Inlet Size inch-NPT/PT | Minch Hose Size inch(mm) | Avg. Air Consumption cfm |
| ZDG-231 | 1/4(6) | 0.9(0.4) | 6.1(155) | 25000 | 1/4 | 3/8(10) | 3 |
| ZDG-2319 | 1/4(6) | 1.3(0.6) | 7.3(185) | 7600 | 1/4 | 3/8(10) | 3 |
| ZDG-231AL | 1/4(6) | 1.3(0.5) | 8.6(220) | 25000 | 1/4 | 3/8(10) | 2.6 |
| ZDG-231L | 1/4(6) | 1.5(0.7) | 10.1(259) | 25000 | 1/4 | 3/8(10) | 2.6 |
| ZP313 | 1/4(6) | 1.3(0.6) | 7(178) | 22000 | 1/4 | 3/8(10) | 3.7 |
| ZDG-356A | 1/4(6) | 1.5(0.7) | 7.8(200) | 2600 | 1/4 | 3/8(10) | 3.7 |
| ZDG-376A | 1/4(6) | 1.5(0.7) | 7.8(200) | 3600 | 1/4 | 3/8(10) | 3.7 |
| ZDG-376AL | 1/4(6) | 2.2(1) | 12(305) | 3600 | 1/4 | 3/8(10) | 3.5 |
| ZP314 | 1/4(6) | 1.5(0.7) | 9.4(240) | 22000 | 1/4 | 3/8(10) | 3.7 |
| ZP315 | 1/4(6) | 1.8(0.8) | 11(280) | 22000 | 1/4 | 3/8(10) | 3.7 |
