Dynabrade Products
Dynabrade Products 52204 7 Degree Offset Die Grinder 0.4 hp 35000 RPM
Heavy-duty pneumatic die grinder with 7-degree offset, 0.4 hp motor and 35,000 RPM maximum speed
- TypeGrinders
- 7-degree offset reaches tight corners for precise grinding
- 4 hp motor delivers 35000 RPM for fast material removal
- Safety-lock throttle lever prevents accidental start-up during handling
- Includes three collet inserts for 1/4 in, 3 mm and 6 mm shanks
- 1/4 in NPT female air inlet connects to standard shop airlines
Target Application
The Dynabrade 52204 is a 7-degree offset die grinder built for heavy-duty material removal in tight quarters. Its compact angle lets operators reach confined areas on metal fabrications, welds or castings where a straight tool cannot fit. The 0.4 hp motor delivers 35000 RPM for fast stock removal and fine finishing. It suits professional technicians who need precise control in restricted workspaces.
Air Consumption and Handling
The grinder connects via a 1/4 in NPT female air inlet, accepting standard shop supply hoses without adapters. A safety-lock throttle lever prevents accidental start-up and gives the user immediate speed control. The offset geometry balances the tool in the hand, reducing wrist strain during extended sessions. No anti-kickback clutch is fitted, so operators must maintain a firm grip at all times.
Sustained Operation Behaviour
Under continuous load the 0.4 hp motor maintains consistent torque for grinding, deburring and polishing cycles. The three supplied collet inserts — 1/4 in, 3 mm and 6 mm — allow quick changes between carbide burrs, mounted points and sanding accessories without downtime. The straight-style body with offset head keeps the spindle aligned to the work surface, preserving cut quality during long production runs.
Highlights
- 7-degree offset reaches tight corners for precise grinding
- 4 hp motor delivers 35000 RPM for fast material removal
- Safety-lock throttle lever prevents accidental start-up during handling
- Includes three collet inserts for 1/4 in, 3 mm and 6 mm shanks
- 1/4 in NPT female air inlet connects to standard shop airlines
Specifications
| Type | Grinders |
|---|---|
| Brand | Dynabrade |
| Model | 52204 |
Questions about this item
How do I connect the air supply to the 1/4 in NPT female inlet on the 52204 and what step is often missed?
Thread a 1/4 in NPT male fitting into the female inlet, use thread sealant, then attach the air hose; the step often missed is installing an in-line filter-regulator-lubricator before the tool to prevent contamination and ensure proper pressure.
Which consumable parts on the 52204 will need replacement over time?
The 1/4 in collet insert (Mfr. No. 01485), 3 mm collet insert (Mfr. No. 01496) and 6 mm collet insert (Mfr. No. 01497) wear with use and should be replaced when they no longer grip accessories securely; the safety-lock throttle lever may also require service if it sticks.
What limits continuous operation of the 52204 at 35 000 RPM?
Heat buildup in the 0.4 hp motor and the supply of clean, lubricated air at the required pressure are the first limits; without adequate airflow and oil mist the bearings overheat and the throttle lever can become sluggish during extended runs.
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