DYNABRADE 4" (102 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52379
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1 hp, 12,000 RPM, Rear Exhaust, 3/8"-24 Spindle Thread.
- Type 1 Wheel Grinder, for cleaning metal, grinding and smoothing weld seams, removing imperfections before painting.
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4" Diameter, Straight Line, 1 hp, 6" Extension, 12,000 RPM.
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Accepts optional 4" diameter Type 1 Wheel, with 3/8" center hole (maximum wheel width of 1/4").
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Governor-controlled motor maintains RPM under heavy load; rear exhaust. Safety-lock lever is included on all models.
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Standard cushioned grip enhances operator comfort and allows additional control.
Specifications
| Air Consumption (SCFM) |
38.0 |
| Power (hp) |
1.0 |
| Max. RPM |
12,000 |
| Tool Spindle Thread |
3/8" - 24 Male |
| Air Inlet Thread |
3/8" NPT |
| Exhaust Type |
Rear |
| GL_Country Of Origin |
US |
| Hose I.D. in. (mm) |
3/8" |
| Vacuum Type |
Non-Vacuum |
| Height in. (mm) |
4.5 |
| Length in. (mm) |
11.25 |
| Weight lb. (kg) |
4.41 |
| Width in. (mm) |
9.5 |
| Pkg. Height in. (mm) |
4.5 |
| Pkg. Length in. (mm) |
14.5 |
| Pkg. Weight lb. (kg) |
5.73 |
| Pkg. Width in. (mm) |
9.5 |
| CE Certified |
Yes |
| EAN (UPC) |
0616026523791 |
| EAC Certified |
Yes |
| Tool Style |
Straight Line |
What our Experts Think
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Powerful Compact Grinding: 4" extension wheel grinder provides strong material removal in confined or hard-to-reach areas.
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Type 1 Wheel Design: Perfect for cutting, grinding, and deburring across a variety of materials.
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Extended Reach: Straight-line extension improves access to recessed or tight spaces.
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Industrial Durability: Built with Dynabrade’s renowned quality for long-lasting professional use.
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Ergonomic Control: Designed for operator comfort, reducing fatigue during extended jobs.
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Versatile Applications: Excellent for metal fabrication, welding prep, maintenance, and finishing work.
Q&A
Q: What is the Dynabrade 52379?
A: A 4" (102 mm) extension wheel grinder built for Type 1 wheels, designed to deliver extended reach and precision grinding in challenging spaces.
Q: What applications is it best for?
A: Excellent for grinding, cutting, deburring, and weld cleanup where access is limited.
Q: What makes this grinder unique?
A: The extended straight-line design allows operators to reach tight spots with improved control and consistent performance.
Q: Who uses this tool?
A: Ideal for metalworkers, welders, auto body repair, and industrial maintenance crews requiring a reliable extension grinder.
Maintenance Tips
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Inspect grinding wheels often; replace if cracked, worn, or damaged.
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Confirm wheel guards, flanges, and fasteners are properly secured before use.
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Lubricate tool per manufacturer’s recommendations to maintain smooth operation.
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Check air hose and fittings regularly for leaks, cracks, or wear.
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Apply steady, moderate pressure while grinding to extend wheel and tool life.
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Clean tool surfaces and air passages with compressed air after use.
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Store grinder in a clean, dry environment to prevent rust and damage.
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Schedule routine professional servicing to ensure safe, reliable performance.
