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Grey cast-iron V-belt pulley with single groove and 1 inch fixed bore

Tb Wood'S

Tb Wood'S AK1241 1" Bore 12.25 in OD V-Belt Pulley

SKU CH-CKYV-B90AA

A cast-iron V-belt pulley with a 1 in fixed bore and 12.25 in outside diameter for 3L, 4L, A and AX belt profiles

  • TypeSheaves & Pulleys
  • Fixed 1 in bore fits shafts directly
  • 25 in outside diameter handles high torque
  • Cast iron construction resists wear and corrosion
  • ISO 9001:2015 certified manufacturing quality
  • A/AX and 4L pitch diameters of 12 in match common V-belts

Fixed-Bore V-Belt Pulley for Industrial Drives

The Tb Wood'S AK1241 is a cast-iron sheave designed for fixed-bore mounting on a one-inch shaft. Its single groove accepts standard V-belts in A, AX, 3L and 4L sections for power-transmission applications.

Verify Shaft Size and Belt Section Before Ordering

Confirm that the driven shaft measures exactly one inch and that the keyway matches a fixed-bore hub. Check that the belt in use corresponds to one of the listed pitch diameters: 11.66 in for 3L or 12 in for A, AX and 4L sections.

Steady Heat Dissipation from Cast-Iron Construction

The grey cast-iron body absorbs and radiates heat evenly during continuous operation, reducing thermal expansion that can alter belt tension. ISO 9001:2015 certification indicates consistent manufacturing control for sustained load reliability.

Highlights

  • Fixed 1 in bore fits shafts directly
  • 25 in outside diameter handles high torque
  • Cast iron construction resists wear and corrosion
  • ISO 9001:2015 certified manufacturing quality
  • A/AX and 4L pitch diameters of 12 in match common V-belts

Specifications

TypeSheaves & Pulleys

Questions about this item

Does the Tb Wood's AK1241 pulley include the V-belt or mounting hardware, or must those be purchased separately?

The listing covers the cast-iron pulley only; V-belts and any mounting hardware are sold separately.

Which belt sections match the 12 in and 11.66 in pitch diameters shown for the AK1241?

The 12 in pitch diameter suits A and AX belts, while the 11.66 in pitch diameter suits 3L and 4L belts.

What does the 12.25 in outside diameter mean when the pulley is mounted on a 1 in shaft?

It is the overall diameter of the cast-iron sheave that will rotate on the fixed 1 in bore.

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