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Metal V-belt pulley with single groove and quick-detachable bushed bore

Tb Wood'S

Tb Wood'S 861B Quick Detachable Bushed Bore 1 Groove V-Belt

SKU CH-6A3Y-TY74X

Quick-detachable bushed bore V-belt pulley with one groove fits bores from 15/16 in to 1-15/16 in and handles A, B, 4L and 5L belt sections at 8.2 in and 8.6 in pitch diameters

  • Quick-detachable bushing speeds installation and removal
  • Single-groove design fits A, B, AX, BX belt sections
  • Precision-machined pitch diameters of 8.2 in and 8.6 in ensure accurate speed ratio
  • Durable construction handles industrial power-transmission loads
  • Compatible with 4L, 5L, A, AX, B, BX belt trade sizes

Quick Detachable Bushed Bore

The Tb Wood'S 861B is a single-groove V-belt pulley designed for power transmission systems. It uses a Quick Detachable bushing for straightforward installation and removal on machinery shafts. Maintenance teams and machine shops use it to drive compatible belt sections in industrial equipment.

Bore range 1/2 in to 1-15/16 in

The pulley accepts bushings with a bore range from 1/2 inch up to 1-15/16 inches. This single specification determines whether the part fits the shaft in your application. Verify the required bore size before ordering to ensure correct mating with the driven component.

Belt compatibility A, B, 4L, 5L, AX, BX

The pulley handles A, AX, B, BX, 4L and 5L belt sections with pitch diameters of 8.2 inches for A and 4L sizes and 8.6 inches for B and 5L sizes. It does not support C, CX, 3V, 3VX, 5V or 5VX sections, so drives requiring those profiles need a different pulley.

Highlights

  • Quick-detachable bushing speeds installation and removal
  • Single-groove design fits A, B, AX, BX belt sections
  • Precision-machined pitch diameters of 8.2 in and 8.6 in ensure accurate speed ratio
  • Durable construction handles industrial power-transmission loads
  • Compatible with 4L, 5L, A, AX, B, BX belt trade sizes

Specifications

No published specifications for this item yet.

Questions about this item

What does the 8.6 inch pitch diameter mean when the pulley is on a shaft?

The 8.6 inch pitch diameter for B and BX belts sets the effective drive radius, so the belt speed and torque ratio are calculated from that dimension when the pulley is mounted.

Which bushing standard does the quick-detachable hub follow, and what bore range does it allow?

The hub uses the standard Quick Detachable bushing system and accepts bores from 1/2 inch up to 1-15/16 inch, so you select the matching QD bushing for your shaft size.

What clearance and shaft size are needed to fit the 861B pulley?

The pulley requires a QD bushing bored for your shaft between 1/2 inch and 1-15/16 inch, plus enough radial space for the bushing flange and one V-belt groove.

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