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Starrett 668 V-shaped shaft alignment clamp with anodized aluminium frame and steel band

Starrett

Starrett 668 Shaft Alignment Clamp hand tool

SKU CH-DB6E-EXRMK MPN 668

Heavy-duty shaft alignment clamp fits shafts up to 7 1/2 in. with anodised aluminium frame, steel-band jaws and three indicators included

  • TypeClamps
  • Weight1.2
  • Accommodates large shafts up to 7 1/2 in. diameter
  • Anodized aluminium frame resists corrosion and wear
  • Steel band jaws provide secure grip on shaft
  • Three dial indicators with 5 in., 7 7/16 in., and 9 in. posts included
  • Lightweight 1.2 kg design eases handling during alignment

Shaft alignment clamp for large diameters

The Starrett 668 shaft alignment clamp handles shafts up to 7 1/2 inches in diameter. Its anodized aluminium frame resists corrosion and wear for long service life. A V-shaped jaw with a steel band provides secure grip during alignment tasks. Model 668 is built for heavy-duty workshop use.

Verify shaft size and indicator requirements

Before ordering, confirm the shaft diameter does not exceed the 7 1/2 inch capacity. Check that the three included indicators — two 196B5 and one 81-141J with posts of 5 in., 7 7/16 in., and 9 in. — match your measurement setup. Ensure the clamp weight of 1.2 is acceptable for your handling and fixturing.

Replaces smaller or worn alignment clamps

This clamp upgrades from tools limited to smaller shaft diameters or those with corroded frames. The jump is worth it when you regularly align shafts near the maximum capacity and need durable anodised aluminium construction. It is not for users who only work on small shafts or who require a different indicator configuration not supplied with this model.

Highlights

  • Accommodates large shafts up to 7 1/2 in. diameter
  • Anodized aluminium frame resists corrosion and wear
  • Steel band jaws provide secure grip on shaft
  • Three dial indicators with 5 in., 7 7/16 in., and 9 in. posts included
  • Lightweight 1.2 kg design eases handling during alignment

Specifications

BrandStarrett
Model668
TypeClamps
Weight1.2

Questions about this item

What comes with the Starrett 668 shaft alignment clamp and do I need to buy anything extra?

The clamp includes two 196B5 indicators and one 81-141J indicator with posts measuring 5 in., 7 7/16 in., and 9 in. The aluminium frame and steel band jaws are built into the tool.

Which indicator version should I choose for the Starrett 668 clamp?

The package supplies two 196B5 indicators and one 81-141J indicator; no alternative versions or capacities are offered for this model.

What does the 7 1/2 in. shaft capacity mean when I mount the clamp on a machine?

The V-shaped jaws with steel band grip shafts up to 7 1/2 in. diameter, and the anodised aluminium frame resists corrosion during alignment work.

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