DYNABRADE
DYNABRADE 52855 Straight Pencil Grinder 3 mm collet
Straight pencil grinder with 3 mm collet runs at 60,000 RPM free speed and 0.1 hp for precision finishing work
- Variable-speed control with 60,000 RPM free speed
- Lightweight 0.7 lb design for extended use
- Rear exhaust directs air away from workpiece
- 3 mm collet capacity for precision accessories
- Low 0.86 CFM average air consumption at 15 seconds
Compact Pencil Grinder for Precision Work
The Dynabrade 52855 is a straight pneumatic pencil grinder built for detailed finishing and deburring tasks. It accepts a 3 mm collet for small accessories and runs on compressed air through a 1/4 in NPT female inlet. A 5 in whip hose is included for immediate connection.
Upgrade from Basic Rotary Tools
This grinder replaces lower-speed rotary tools when precision and consistent power are required. The jump is justified for operators who need 60,000 RPM free speed and 0.1 hp output in a lightweight 0.7 lb body. Variable speed control allows fine adjustment for delicate materials.
Air Supply Limits Define Performance
Operation requires 90 psig at the tool with a minimum 1/4 in hose diameter. Average consumption is 0.86 CFM during a 15 second run and 0.9 CFM under full load. Rear exhaust directs airflow away from the work surface. Inadequate compressor capacity will reduce speed and torque.
Highlights
- Variable-speed control with 60,000 RPM free speed
- Lightweight 0.7 lb design for extended use
- Rear exhaust directs air away from workpiece
- 3 mm collet capacity for precision accessories
- Low 0.86 CFM average air consumption at 15 seconds
Specifications
| Brand | DYNABRADE |
|---|
Questions about this item
What size air hose and inlet does the 52855 pencil grinder require?
The tool needs a minimum 1/4 in hose and connects via a 1/4 in NPT female air inlet.
How is the variable speed controlled during installation and what step is often missed?
Speed is regulated by the air supply; the step often missed is setting the regulator to 90 psig before use.
When should the 3 mm collet or bearings be inspected or replaced?
Inspect the collet grip and precision bearings if run-out appears or after extended high-speed use at 60,000 RPM.
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