DYNABRADE 6" (152 mm) Dia. Type 11 Vertical Cup Wheel Grinder - 53233
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2 hp, 6,000 RPM, Gearless, Rotational Exhaust, 5/8"-11 Spindle Thread.
- Ideal for heavy-duty applications in foundries and shipyards. Fast stock, rust and scale removal.
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Governor-controlled air motor maintains tool RPM under heavy load. Over-speed shut-off feature ensures maximum operator safety. Motor is gearless with less wearable parts, ensuring reduced maintenance and less down-time.
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Insulated tool handle minimizes cold air transmission to the hand. Handle position is adjustable for operator comfort. Includes safety-lock throttle lever. For peak performance, use of optional 95870 Air Hose-1/2" (13 mm) diameter is recommended.
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Model accepts optional Type 11 Cup Wheels, 6" (152 mm) diameter. Wheel NOT included with tool. Covers more area in less time!
Specifications
| Air Consumption (SCFM) |
80.0 |
| Power (hp) |
2.0 |
| Max. RPM |
6,000 |
| Tool Spindle Thread |
5/8-11 Male |
| Air Inlet Thread |
1/2" NPT |
| Exhaust Type |
Side |
| GL_Country Of Origin |
US |
| Hose I.D. in. (mm) |
1/2" |
| Vacuum Type |
Non-Vacuum |
| Height in. (mm) |
7.0 |
| Length in. (mm) |
9.5 |
| Weight lb. (kg) |
10.5 |
| Width in. (mm) |
10.0 |
| Pkg. Height in. (mm) |
8.5 |
| Pkg. Length in. (mm) |
14 |
| Pkg. Weight lb. (kg) |
11.5 |
| Pkg. Width in. (mm) |
10 |
| CE Certified |
Yes |
| EAN (UPC) |
0616026532335 |
| EAC Certified |
Yes |
| Tool Style |
Vertical |
What our Experts Think
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6" (152 mm) Type 11 vertical cup wheel design delivers aggressive, high-contact grinding for heavy-duty surface work
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Vertical configuration provides improved control and optimal wheel orientation for flat and edge grinding
- Built for high material removal rates in demanding industrial applications
- Ideal for weld cleanup, surface leveling, and stock removal on large metal surfaces
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Robust pneumatic motor ensures consistent power and performance under load
- Designed for industrial-grade durability in fabrication and maintenance environments
- Suitable for use on steel, castings, structural components, and weld seams
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Ergonomic handling design supports stability during extended grinding operations
- Optimized for production environments requiring fast, efficient grinding output
- A strong choice for professionals needing powerful vertical cup wheel performance for heavy stock
Q&A
Q: What is the DYNABRADE 53233 used for?
A: A heavy-duty pneumatic vertical cup wheel grinder designed for fast weld removal, rust and scale removal, and aggressive metal surface preparation in industrial environments.
Q: What type of wheel does it use?
A: It uses a 6" (152 mm) Type 11 cup wheel (not included), typically for grinding and surface leveling on metal structures.
Q: How powerful is it?
A: It features a high-output pneumatic motor (around 2 HP class) built for continuous heavy-duty grinding applications.
Q: What is the operating speed?
A: It runs at approximately 6,000 RPM, optimized for controlled but aggressive material removal.
Q: What makes the “vertical” design important?
A: The vertical configuration improves control, stability, and leverage when grinding large flat or curved metal surfaces.
Q: Does it maintain speed under load?
A: Yes, it uses a governor-controlled air motor that keeps RPM stable during heavy grinding pressure.
Maintenance Tips
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Use clean, dry compressed air only: Moisture or contamination reduces motor efficiency and increases wear on the air governor system.
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Maintain correct air pressure (~90 PSI): The governor-controlled motor holds RPM under load, but poor pressure stability still affects performance.
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Lubricate daily: Add a few drops of pneumatic tool oil into the air inlet before each use to protect internal vanes and seals.
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Inspect Type 11 cup wheels before every use: Never run cracked, chipped, or dropped wheels—failure at 6,000 RPM is extremely hazardous.
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Match wheel rating to tool speed: Ensure cup wheels are rated ≥6,000 RPM and correctly seated on the 5/8"-11 spindle.
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Check spindle and mounting threads: Keep threads clean and tight to prevent wobble, vibration, and imbalance under load.
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Watch for vibration at startup: Any abnormal shake usually indicates wheel imbalance or improper mounting—stop immediately.
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Keep exhaust and handle insulation clear: Air exhaust should not be blocked; insulated handle reduces operator fatigue and heat transfer.
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Inspect air hoses and fittings: Air leaks reduce torque and can cause inconsistent grinding performance.
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Clean after use: Remove grinding dust and metal particles from the spindle, guard area, and housing to prevent buildup.
Damage 
Loss 
Theft 
