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Cylindrical carbon steel extension rod with 8mm shank and 8mm fastener end

YINGHUA

YINGHUA Milling Cutter Extension Rod 8 to 8mm fastener

SKU CH-PRR9-RQPM1

Carbon-steel extension rod lengthens milling-cutter shanks to 8 mm for CNC engraving and trimming machines

  • Product typeRight-Angle Drills
  • Extends milling cutter reach for deeper CNC carving
  • Carbon steel construction withstands engraving machine forces
  • 8 mm to 8 mm fit matches common router bits
  • Slow-start guidance prevents vibration at high speeds
  • Accessory for trimming and engraving equipment

CNC Router Bit Extension

This carbon steel extension rod connects to 8 mm shank milling cutters for CNC wood carving routers and engraving machines. It lengthens the tool reach so deeper profiles can be cut without changing the machine setup. The accessory fits trimming machines and standard collets that accept 8 mm shanks. Buyers needing a different shank diameter or a quick-change system cannot use this rod.

Replaces Short Fixed Shank Bits

The rod substitutes for dedicated long-shank cutters when only standard length bits are available. It is worth fitting when a project demands extra depth but the spindle travel or workpiece height prevents a direct tool change. Operators who already own a full set of long-reach cutters for every profile will not gain flexibility from this addition.

Sustained Cutting Stability

Start the spindle at low speed and increase gradually once rotation is stable; running too fast too soon induces vibration from the extended mass. The carbon steel body transmits torque reliably during continuous profiling passes. Excessive feed rates or aggressive depth-per-pass settings will amplify deflection and should be avoided.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 76% of the 2,412 comparable items (median $81.99).

Specifications

Product
Product typeRight-Angle Drills

Questions about this item

What shank diameter does the 8 mm bore on this extension rod accept?

The bore is sized for an 8 mm milling-cutter shank, matching the 8 mm shank on the rod itself.

How do you secure a cutter in the rod without inducing run-out?

Insert the cutter fully into the 8 mm bore, then tighten the machine's collet or set-screw evenly while the rod is seated in the spindle.

What care keeps the carbon-steel rod from seizing or rusting?

Wipe the shank and bore clean after each use and apply a light coat of machine oil before storage.

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