DYNABRADE Cone Or Plug 6" (152 mm) Extension Wheel Grinder - 52722

DYNABRADE Cone Or Plug 6" (152 mm) Extension Wheel Grinder - 52722

•  1 hp, Straight-Line, 20,000 RPM, Rear Exhaust, 3/8"-24 Spindle Thread.
• Cone or Plug Wheel Grinder, for cleaning metal, grinding and smoothing weld seams, removing imperfections before painting.
• Straight Line, 1 hp, Rear Exhaust, 6" Extension, 20,000 RPM.
• Accepts optional Abrasive Cone or Plug Wheel, 1-1/4" diameter. Governor-controlled motor maintains RPM under heavy load.
• Safety-lock lever is included on all models. Standard cushioned grip enhances operator comfort and offers additional control.
• Industrial applications in fabrication plants, welding shops, foundries, steel mills and shipyards.

Specifications    

What our Experts Think  

• Extended reach design for grinding and finishing inside tight or recessed work areas.
• Powerful 1 HP air motor delivers consistent performance for demanding industrial applications.
• 20,000 RPM free speed supports fast material removal and efficient surface preparation.
• Governor-controlled motor helps maintain speed under load for more uniform results.
• Rear exhaust system directs air away from the workpiece, improving visibility and finish quality.
• Safety-lock lever and cushioned grip enhance operator control and reduce fatigue during extended use.
• Compatible with cone and plug wheels up to 1-1/4"–1-1/2" diameter, making it versatile for weld blending, deburring, and metal finishing.

 
Q&A    

Q: What is the DYNABRADE 52722 used for?
A: A heavy-duty pneumatic extension wheel grinder designed for cleaning metal, smoothing weld seams, deburring, and removing surface imperfections in hard-to-reach areas.

Q: What makes the 6-inch extension useful?
A: The 6" extended shaft provides access to deep recesses, narrow openings, and confined work areas where standard grinders cannot reach.

Q: How much power does it deliver?
A: It features a 1 HP air motor for demanding industrial grinding applications.

Q: What is the maximum operating speed?
A: The grinder operates at up to 20,000 RPM for fast material removal and efficient surface preparation.

Q: What wheel sizes does it accept?
A: It is designed for cone or plug wheels up to 1-1/4" to 1-1/2" diameter, depending on accessory selection.

Q: Does it maintain speed under load?
A: Yes, the governor-controlled motor helps maintain consistent RPM during demanding grinding operations.

Maintenance Tips    

• Use clean, dry compressed air: Install a filter/regulator and keep moisture out of the air supply to protect internal motor components.
• Lubricate daily: Add a few drops of pneumatic tool oil to the air inlet before use to reduce vane and bearing wear.
• Maintain proper air pressure: Operate at the manufacturer's recommended pressure to ensure consistent RPM and prevent premature motor wear.
• Inspect extension shaft regularly: Check for bending, vibration, or excessive runout, especially after heavy grinding applications.
• Verify wheel condition before use: Replace cracked, chipped, or worn cone and plug wheels immediately. Never use damaged abrasives.
• Match wheel RPM ratings: Always ensure the abrasive wheel's maximum RPM rating meets or exceeds the grinder's 20,000 RPM capability.