Excellent 4.9 | 18,452 reviews

DYNABRADE 3" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52376

DYNABRADE 3" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52376

$632.99
$632.99 $842.99
SAVE 24% Sold out
DYNABRADE 3" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52376

DYNABRADE 3" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52376

$632.99
$632.99 $842.99
SAVE 24% Sold out

DYNABRADE 3" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52376

  •  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.
  • 3" Diameter, Straight Line, 1 hp, 6" Extension, 12,000 RPM.
  • Accepts optional 3" diameter Type 1 Wheel, with 3/8" center hole (maximum wheel width of 1/2"). Governor-controlled motor maintains RPM under heavy load; rear exhaust.
  • Safety-lock lever is included on all models.
  • Standard cushioned grip enhances operator comfort and 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) 3.5
Length in. (mm) 11.25
Weight lb. (kg) 3.87
Width in. (mm) 5.75
Pkg. Height in. (mm) 3.25
Pkg. Length in. (mm) 16
Pkg. Weight lb. (kg) 5.16
Pkg. Width in. (mm) 5.75
CE Certified Yes
EAN (UPC) 0616026523760
EAC Certified Yes
Tool Style Straight Line
What our Experts Think  
  • The Dynabrade 52376 3" (76 mm) Straight-Line Type 1 Extension Wheel Grinder is a compact, high-speed industrial grinder designed for precise weld cleanup, internal grinding, and tight-access metal removal.
  • Powered by a 1 HP governor-controlled pneumatic motor, it delivers consistent torque and maintains performance under load for stable cutting in demanding fabrication work.
  • Runs at ~12,000 RPM, optimized for controlled use of 3" Type 1 abrasive wheels, enabling fast stock removal and weld seam blending in confined spaces.
  • The 6" extension shaft design allows deep access into recessed areas, internal structures, and hard-to-reach fabrication points where standard grinders cannot reach.
  • Built for straight-line precision control, improving alignment and stability when working inside channels, frames, and tight geometries.
  • Includes a rear exhaust system and safety-lock throttle, improving operator comfort, control, and safety during continuous-duty industrial use.
  • Designed for heavy fabrication environments such as steel workshops, shipbuilding, maintenance, and industrial repair—not light-duty grinding or finishing.
  • Best suited for: weld grinding, casting cleanup, deburring, and internal surface preparation where a small-diameter wheel + extended reach + stable straight-line control are required.
  • Key takeaway: a specialized reach grinder that prioritizes access and precision in confined spaces while still delivering strong industrial-level cutting power
 
Q&A    
Grinder - 52376

Q: What is the Dynabrade 52376 3" Straight-Line Type 1 Extension Wheel Grinder used for?
A: It is a pneumatic straight-line grinder designed for heavy-duty metal removal, weld cleanup, deburring, and fabrication grinding using Type 1 abrasive wheels.

Q: What does the extension feature do?
A: The extended shaft allows access into deep, narrow, or recessed areas, such as inside frames, channels, and hard-to-reach welds.

Q: What are its key specifications?
A: It features a 3" wheel capacity, 1 HP air motor, 15,000 RPM free speed, 3/8"-24 spindle thread, and rear exhaust design for industrial grinding performance.

Q: What materials can it grind?
A: It is commonly used on steel, stainless steel, cast iron, welds, and structural metal components.

Q: What industries use it most?
A: It is widely used in metal fabrication, welding, shipbuilding, foundries, and heavy industrial maintenance.

Q: Is it for finishing or rough work?
A: It is designed for aggressive grinding and rough material removal, not fine finishing.

Q: What are the main benefits?
A: It offers high grinding power, extended reach, stable straight-line control, and consistent speed under load.


Maintenance Tips    
  • Lubricate air motor daily with pneumatic tool oil to maintain smooth, high-speed operation.
  • Use clean, dry compressed air at recommended PSI to prevent corrosion and internal wear.
  • Inspect 3" Type 1 grinding wheels before use; replace any cracked, chipped, or unbalanced wheels immediately.
  • Check extension shaft, spindle, and wheel mounting for tightness and proper alignment.
  • Keep air inlet and exhaust ports clear of grinding dust for proper airflow and cooling.
  • Ensure hoses and fittings are leak-free to maintain consistent RPM and grinding performance.
  • Do not exceed rated wheel speed to prevent wheel failure and safety hazards.
  • Monitor vibration during operation; excessive vibration may indicate imbalance or bearing wear.
  • Clean tool body after each use to remove metal dust and debris buildup.
  • Store in a dry, clean environment to protect internal air motor components from moisture and corrosion.
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