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Black rubber banded V-belt, three joined bands, wrapped edges, 73.8 in outside length

Dayton

Dayton 3HEY5 3/B70 Banded V-Belt 73.8 in 3 Band

SKU CH-XMA9-DT89D

A 73.8 in banded V-belt with three B-section bands, polyester cord reinforcement and a 194 °F temperature rating for heavy industrial drives

  • Three-band design distributes load evenly across pulleys
  • 8 in outside length fits B70 drive specifications
  • Wrapped rubber compound resists abrasion in heavy industry
  • Polyester reinforcing cords maintain tension at 194 °F
  • 4 in minimum pulley diameter suits compact drives

Industrial Banded V-Belt 3/B70

The Dayton 3HEY5 is a wrapped rubber-compound banded V-belt built for heavy-industry and HVAC drives. Three B-section bands run together on a single loop measuring 73.8 inches outside length. Polyester reinforcing cords and a rubber coating handle continuous loads up to 194 degrees Fahrenheit. The belt fits pulleys with a minimum pitch diameter of 5.4 inches.

Replaces Three Separate B-Section Belts

A single 3-band belt eliminates the alignment drift and uneven stretch that occur when three individual belts are tensioned independently. The upgrade is worth it when vibration or shock loads cause standard belts to roll or jump off the pulley. Banded construction keeps each rib in its groove so the drive stays synchronised under sudden torque changes.

Suits Maintenance Teams on High-Vibration Drives

The 2-inch top width and half-inch thickness match the 3/B70 trade size for existing sheaves in heavy-industry and HVAC installations. Buyers who need a different band count, a narrower top width, or a longer outside length should look at other belt series because this part is fixed at three bands and 73.8 inches.

Highlights

  • Three-band design distributes load evenly across pulleys
  • 8 in outside length fits B70 drive specifications
  • Wrapped rubber compound resists abrasion in heavy industry
  • Polyester reinforcing cords maintain tension at 194 °F
  • 4 in minimum pulley diameter suits compact drives

Specifications

No published specifications for this item yet.

Questions about this item

What minimum pulley pitch diameter does the 3/B70 banded V-belt require?

The belt is rated for a minimum pulley pitch diameter of 5.4 in. Using smaller pulleys can reduce belt life and cause premature wear.

How do I correctly install the three-band belt so all bands share the load evenly?

Mount all three bands on the pulleys simultaneously, then tension the drive as a single unit. Tensioning bands individually creates uneven stretch and shortens service life.

When should I replace the belt based on its maximum operating temperature limit?

If the drive regularly exceeds 194 °F, the rubber compound will degrade faster. Inspect for cracking or hardening and replace the belt if those signs appear.

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