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Silver straight pneumatic die grinder with safety-lock throttle lever and multiple collet inserts

DYNABRADE

DYNABRADE 52677 Straight Die Grinder 1 hp 20000 RPM

SKU CH-CBCF-8NDH6

Heavy-duty straight die grinder delivers 1 hp at 20,000 RPM with safety-lock throttle and includes 1/4 in, 3/8 in, 6 mm and 8 mm collet inserts

  • 1 hp motor delivers high torque for heavy-duty grinding
  • 20000 RPM maximum speed enables fast material removal
  • Safety-lock throttle lever prevents accidental start-up
  • Includes 1/4 in, 3/8 in, 6 mm and 8 mm collet inserts
  • 3/8 in NPT female air inlet connects to standard shop supply

DYNABRADE 52677 Straight Die Grinder

The DYNABRADE 52677 is a heavy-duty pneumatic straight die grinder rated at 1 hp with a maximum speed of 20000 RPM. It features a 3/8 in NPT female air inlet and ships as a bare tool with four collet inserts covering 1/4 in, 3/8 in, 6 mm and 8 mm sizes. A safety-lock throttle lever is included for operator protection.

Who this suits and who should look elsewhere

This grinder suits metalworkers and fabricators who need a high-speed straight tool for deburring, porting or finishing with a choice of collet sizes. It is not for users without access to a compressed-air system capable of delivering the required flow. Buyers needing an angled head, electric drive or built-in speed control should consider other tool styles.

Deciding specification: 20000 RPM maximum speed

The 20000 RPM no-load speed determines whether the grinder can meet the surface-speed demands of carbide burrs and mounted points in hard materials. Verify that your air supply and accessory ratings align with this figure before purchase.

How it compares

Measured against everything we stock in Air & Hydraulic Power Tools, at today’s prices. Recalculated every night.

Price $690.99
Pricier than about 91% of the 243 comparable items (median $61.99).

Specifications

Product
Brand nameDYNABRADE

Questions about this item

Will the 3/8 in NPT female air inlet connect to my existing compressor hose without an adapter?

The grinder has a 3/8 in NPT female air inlet; match it to your hose fitting or use the correct NPT adapter for your supply line.

How can I confirm the 1 hp motor reaches 20000 RPM under load after installation?

Verify air pressure at the tool meets spec, then listen for steady high-speed operation without bogging when the collet engages the workpiece.

Which collet inserts are included in the box and what must I purchase separately for other shank sizes?

The kit ships with 1/4 in (50013), 3/8 in (50014), 6 mm (50016) and 8 mm (50039) collet inserts; any other shank size requires a separate insert.

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