3D CAD and 2D Drawings

Find and download 3D CAD and 2D drawings for key Timken products.

Batch CAD Cart (0)
  • Cart is empty
Two-Side Moveable
1/3 through 1-1/2 HP
“A” and “B” Belts
      Aluminoline variable speed pulleys are designed for the best possible belt alignment with the least amount of overhung load. Flanges are made of a lightweight, corrosion-resistant aluminum, which is hard-coat anodized for long life. The aluminum flanges provide quiet operation with minimum vibration. These pulleys are used with classical “A” and “B” drive belts. Aluminoline pulleys offer maximum service when lubricated through a convenient grease fitting located on the end of the pulley shaft.

    Belt Selection
      Aluminoline variable speed pulleys are designed to drive standard “A” and “B” section belts. Due to the intermeshing flange design, it is best to use a wrapped belt or one without cogs.

    Adjustable Center Drives
      The typical adjustable center drive consists of the Aluminoline pulley mounted on the motor shaft, a companion sheave on the driven shaft, an adjustable motor base and a belt. Standard “A” and “B” fixed diameter sheaves should be used as driven companion sheaves. Belt alignment will be maintained throughout the speed range because the Aluminoline pulleys are two-side moveable. Due to the minimal bottom contact area of “A” and “B” belts, flat driven sheaves are NOT recommended.
Unit of Measure



N/A 145 1/2 PULLEY

Drive Type

N/A Adjustable Center - Driver

Belt Size



N/A 2:1


N/A 2.25 lb

UPC Number

N/A 18523

Dimensional Data

Bore Diameter 

N/A 1/2 in

Keyway Size 

N/A 1/8 x 1/4 in


N/A 1.380 in35.05 mm

Outside Diameter

N/A 4.50 in

Max. Pitch Diameter (Dimension PD)

N/A 4.250 in

Min. Pitch Diameter (Dimension PD)

N/A 2.100 in

Overall Length

N/A 4.810 in122.17 mm

Cubic inches

N/A 97.40250 in³

Performance Data

Torque Capacity

N/A 18.00 in·lb

Motor Power at 1,150 rpm

N/A 0.30 hp

Motor Power at 1,750 rpm

N/A 0.50 hp



  • Ratings for 1/3 through 1-1/2 HP motors
  • Unique “intermeshing” flange design
  • Greater speed ratios (up to 2.75 to 1) with a narrow-belt adjustable center drive than any other pulley
By clicking Submit, you consent to the personal information you provide being accessible by Timken personnel, who may be located outside your home country, as described in our Privacy Notice.