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Unibor ArborR8 Bridgeport Arbor 1855-R8-2.75 fluid bottle

Unibor

Unibor ArborR8 Bridgeport Arbor 1855-R8-2.75 fluid

SKU CH-RJHB-1CES1

Bridgeport arbor with R8 taper and 2.75 inch dimension for milling machine tooling

  • Unibor brand trusted by machinists worldwide
  • Model 1855-R8-2.75 fits Bridgeport R8 spindles
  • New condition ensures clean uncontaminated fluid
  • Precision arbor design reduces runout vibration
  • Ready for immediate workshop use

Precision Bridgeport Arbor

The Unibor ArborR8 Bridgeport Arbor 1855-R8-2.75 is a new cutting-tool adapter built for machinists who run Bridgeport-style milling machines. It connects standard R-8 tooling to the machine spindle so operators can hold cutters securely during metal-removal work.

Direct manufacturer delivery

The unit ships free directly from Unibor, so the arbor arrives without intermediate handling that can introduce nicks or contamination. That single-source path keeps the taper surfaces clean and ready for immediate use in the shop.

Taper-fit limitations

The R-8 taper relies on a self-holding friction fit rather than a positive locking mechanism, so heavy side loads or vibration can loosen the tool over time. Users must verify drawbar torque and run-out before each critical cut.

How it compares

Measured against everything we stock in Oils, Greases & Fluids, at today’s prices. Recalculated every night.

Price $135.99
Pricier than about 85% of the 337 comparable items (median $22.99).

Specifications

Product
Brand nameUNIBOR

Questions about this item

How often will the 1855-R8-2.75 arbor need lubrication replacement under normal machining conditions?

The 1855-R8-2.75 arbor requires standard lubrication intervals based on your machine's maintenance schedule and coolant type used during operation.

What dimensional tolerance limit appears first when the 1855-R8-2.75 arbor runs continuously at full capacity?

The 2.75 inch diameter specification defines the primary fit tolerance that governs performance limits during sustained high-load machining cycles.

Does the 1855-R8-2.75 arbor generate noticeable heat or vibration during all-day production runs?

The 1855-R8-2.75 arbor maintains stable thermal characteristics when properly lubricated, with vibration dependent on workpiece balance and spindle condition.

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