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Micro 100 TBB-500 boring bar, 7 inch steel, silver finish

Micro 100

Micro 100 TBB-500 Boring Bar 7 in Steel

SKU CH-3MRZ-W1175

A 7-inch steel boring bar with a .3750 inch Micro-Quik tool holder for precision machining

  • TypeTarps
  • Micro 100 brand trusted by machinists
  • 7 in length reaches deep bores
  • Steel construction resists deflection under load
  • .3750 in shank fits Micro-Quik holders
  • New condition ensures full tool life

Micro 100 Boring Bar

The Micro 100 TBB-500 boring bar measures seven inches long and is made from steel. It accepts a Micro-Quik tool holder with a .3750 inch bore. This cutting tool suits machinists who need a rigid shank for internal turning operations.

Steel Shank Under Load

The solid steel body resists deflection when cutting forces build during deep boring passes. Vibration stays lower than with thinner shanks so surface finish remains consistent through the cut. Heat dissipates through the mass of the bar without a dedicated coolant channel.

Micro-Quik Holder Interface

The .3750 inch bore locks Micro-Quik tooling in place with a single setscrew. No other holder system fits this bore diameter so tooling choices are limited to that standard. Changing inserts requires only a hex key and takes seconds at the machine.

Highlights

  • Micro 100 brand trusted by machinists
  • 7 in length reaches deep bores
  • Steel construction resists deflection under load
  • .3750 in shank fits Micro-Quik holders
  • New condition ensures full tool life

Specifications

BrandMicro 100
TypeTarps

Questions about this item

How much vibration or heat does the 7 in steel boring bar generate during extended cuts?

The solid steel body dampens vibration and conducts heat away from the cutting zone, so the bar runs quietly and stays cool enough for long sessions.

What holder or machine setup is required to use the 0.3750 in Micro-Quik boring bar?

A Micro-Quik tool holder with a matching 0.3750 in bore is needed; the bar drops straight into that holder on any compatible lathe.

Will the 7 in Micro 100 boring bar fit the tool posts on my older lathe?

The 0.3750 in shank matches the standard size used on many legacy machines, so it seats directly in existing Micro-Quik or equivalent holders.

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