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Silver aluminium straight pencil grinder with twist throttle and rear exhaust, 51703

Dynabrade Products

Dynabrade Products 51703 Straight Pencil Grinder 1/8 in collet

SKU CH-YGXC-C63TZ

A straight pneumatic pencil grinder with a 1/8 in collet running at 50,000 rpm free speed and 0.1 hp power

  • Product typeAngle, Pitch & Slope Locators
  • Free-speed 50,000 rpm for fast material removal
  • 1 hp motor delivers consistent grinding power
  • Rear exhaust directs air away from the workpiece
  • Twist throttle gives precise speed control
  • Light 0.7 lb aluminium housing reduces operator fatigue

Straight Pencil Grinder for precision finishing

The Dynabrade 51703 is a straight pneumatic pencil grinder built for detail work such as deburring, polishing and light grinding. Its 1/8 inch collet accepts small accessories for intricate metal, composite or wood applications. The tool suits technicians and hobbyists who need controlled material removal in tight spaces.

50,000 RPM free speed with 0.1 hp output

At 90 psi the grinder delivers 50,000 RPM free speed and 0.1 hp, providing enough headroom for fine finishing and light stock removal. Average air consumption is 2.0 CFM over a 15 second run, rising to 8.0 CFM at full load with a minimum 1/4 inch hose. The rear exhaust directs airflow away from the workpiece while the twist throttle offers simple on-off control.

Replaces larger die grinders for confined access

This pencil grinder upgrades from bulkier die grinders when access is limited or when a lighter 0.7 lb tool reduces fatigue during extended use. The 5 1/4 inch overall length and 60 inch whip hose improve reach inside cavities. Buyers needing higher torque, larger collet capacities or variable speed regulation will not find those features here.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $498.99
Pricier than about 92% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameDynabrade
Product typeAngle, Pitch & Slope Locators

Questions about this item

Will the 1/4 in NPT air inlet connect to my existing 1/4 in hose without an adapter?

Yes, the tool has a 1/4 in NPT female air inlet and a 60 in whip hose with 1/4 in I.D., so it fits standard 1/4 in supply lines directly.

How can I verify the grinder is running at the rated 50,000 RPM free speed after installation?

Use a contact tachometer on the collet shaft while the tool runs unloaded at 90 psi; the reading should approach 50,000 RPM.

Does the package include the 1/8 in collet or must I purchase it separately?

The 1/8 in collet is fitted as standard; the box also contains the 60 in whip hose and twist-throttle assembly, so no extra collet purchase is needed.

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