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Silver metal straight pencil grinder with rear exhaust and non-slip grip

Dynabrade Products

Dynabrade Products 51700 Straight Pencil Grinder hand tool

SKU CH-9DHQ-J8NNR

A heavy-duty pneumatic pencil grinder delivering 0.1 hp at 60,000 RPM with a 1/8 in collet and rear exhaust

  • Product typeAngle, Pitch & Slope Locators
  • 1 hp motor delivers high-speed precision
  • 60,000 RPM maximum speed for fine detail work
  • 1/8 inch collet accepts standard accessories
  • Rear exhaust directs air away from workpiece
  • Non-slip grip improves control during extended use

Dynabrade 51700 Straight Pencil Grinder

The Dynabrade 51700 is a straight pencil grinder built for precision material removal in tight spaces. It suits metalworkers and fabricators who need controlled high-speed performance for detail grinding, deburring or finishing tasks.

Check air supply and collet compatibility

Verify your compressed-air system delivers sufficient flow at the required pressure for a 0.1 hp motor running up to 60 000 RPM. Confirm the 1/4 in NPT female inlet matches your hose fittings and that the 1/8 in collet accepts the accessories you intend to use.

Upgrades from basic rotary tools

This grinder replaces lower-speed rotary tools when finer finish quality and faster stock removal are needed. The jump is worth it for operators who work long shifts and value the non-slip grip, though it lacks a lock-off switch or brake for applications requiring those safety features.

How it compares

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

Price $445.99
Pricier than about 91% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameDynabrade
Product typeAngle, Pitch & Slope Locators

Questions about this item

What comes in the box with the 51700 Straight Pencil Grinder and what else do I need to run it?

The kit contains the bare tool and a 1/4 in I.D. whip hose; you must supply a compressed-air source with a 1/4 in NPT female fitting and 1/8 in collet accessories.

Which collet size and air inlet version should I choose for the 51700 pencil grinder?

This model is built with a fixed 1/8 in collet and a 1/4 in NPT female air inlet; no alternative sizes or versions are offered.

How does the 0.1 hp and 60,000 RPM rating translate to actual grinding performance?

The 0.1 hp motor spins the 1/8 in collet at up to 60,000 RPM, delivering high-speed material removal for light deburring, polishing and detail finishing when adequate air pressure is supplied.

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