Home > Power Transmission > V-Belt Pulleys > B-Section Pulleys > 4B QD Bushed Pulleys

4B QD Bushed Pulleys

4B series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts and range from 3.75" to 38.35" in diameter. Depending on the pulley size they are made to use with SH, SD, SK, SF, or E QD bushings, which we also stock. The majority of our four-groove 4B QD bushed pulleys are manufactured from a high-strength grade 35 cast iron, are phosphate-coated and painted for anti-corrosion, and all of them are balanced at the factory for smooth machinery operation. The main benefit of using a QD (quick detachable) pulley is that if the bushing (hub) breaks you don't have to replace the whole assembly, or if just the pulley gets warn out you the same principle applies. The other big benefit is that there is a wider range of bore options with QD pulleys than "fixed-bore" style.

4B Style Pulley Size Chart


Size
Bushing Type
Pulley Type
Pitch Diameter (5L/B)
Pitch Diameter (4L/ A)
Outside Diameter
(E)
(F)
(L)
(M)
Pulley Weight (LBS)
4B34SD SD E 3.4" 3.0" 3.75" 2-15/32" 3-1/4" 1-13/16" 1-1/32" 5.5
4B36SD SD E 3.6" 3.2" 3.95" 2-15/32" 3-1/4" 1-13/16" 1-1/32" 5.8
4B38SD SD E 3.8" 3.4" 4.15" 2-15/32" 3-1/4" 1-13/16" 1-1/32" 6.2
4B40SD SD E 4.0" 3.6" 4.35" 2-15/32" 3-1/4" 1-13/16" 21/32" 6.6
4B42SD SD E 4.2" 3.8" 4.55" 2-15/32" 3-1/4" 1-13/16" 21/32" 6.9
4B44SD SD E 4.4" 4.0" 4.75" 2-15/32" 3-1/4" 1-13/16" 21/32" 7.2
4B46SD SD A 4.6" 4.2" 4.95" 21/32" 3-1/4" 1-13/16" 25/32" 7.6
4B48SD SD A 4.8" 4.4" 5.15" 21/32" 3-1/4" 1-13/16" 25/32" 8.0
4B50SD SD A 5.0" 4.6" 5.35" 21/32" 3-1/4" 1-13/16" 25/32" 8.4
4B52SD SD A 5.2" 4.8" 5.55" 21/32" 3-1/4" 1-13/16" 25/32" 8.8
4B54SD SD A 5.4" 5.4" 5.75" 21/32" 3-1/4" 1-13/16" 25/32" 9.2
4B56SD SD A 5.6" 5.2" 5.95" 21/32" 3-1/4" 1-13/16" 25/32" 9.6
4B58SDSD A 5.8" 5.4" 6.15" 21/32" 3-1/4" 1-13/16" 25/32" 10.0
4B60SD SD A 6.0" 5.6" 6.35" 21/32" 3-1/4" 1-13/16" 25/32" 10.4
4B62SD SD A 6.2" 5.8" 6.55" 21/32" 3-1/4" 1-13/16" 25/32" 10.8
4B64SD SD A 6.4" 6.0" 6.75" 21/32" 3-1/4" 1-13/16" 25/32" 12.0
4B66SD SD A 6.6" 6.2" 6.95" 21/32" 3-1/4" 1-13/16" 25/32" 12.4
4B68SD SD A 6.8" 6.4" 7.15" 21/32" 3-1/4" 1-13/16" 25/32" 13.0
4B70SK SK A 7.0" 6.6" 7.35" 7/32" 3-1/4" 1-15/16" 1-3/32" 13.5
4B74SK SK A 7.4" 7.0" 7.75" 7/32" 3-1/4" 1-15/16" 1-3/32" 14.0
4B80SK SK A 8.0" 7.6" 8.35" 7/32" 3-1/4" 1-15/16" 1-3/32" 15.5
4B86SK SK A 8.6" 8.2" 8.95" 7/32" 3-1/4" 1-15/16" 1-3/32" 17.0
4B94SK SK A 9.4" 9.0" 9.75" 7/32" 3-1/4" 1-15/16" 1-3/32" 19.0
4B110SK SK A 11.0" 10.6" 11.35" 7/32" 3-1/4" 1-15/16" 1-3/32" 22.0
4B124SK SK A 12.4" 12.0" 12.75" 7/32" 3-1/4" 1-15/16" 1-3/32" 29.0
4B136SK SK A 13.6" 13.2" 13.95" 7/32" 3-1/4" 1-15/16" 1-3/32" 34.0
4B154SF SF A 15.4" 15.0" 15.75" 5/32" 3-1/4" 2-1/16" 1-1/32" 39.0
4B160SF SF A 16.0" 15.6" 16.35" 5/32" 3-1/4" 2-1/16" 1-1/32" 42.0
4B184SF SF A 18.4" 18.0" 18.75" 5/32" 3-1/4" 2-1/16" 1-1/32" 47.0
4B200SF SF A 20.0" 19.6" 20.35" 5/32" 3-1/4" 2-1/16" 1-1/32" 51.0
4B250E E D 25.0" 24.6" 25.35" 5/32" 3-1/4" 2-3/4" 21/32" 73.0
4B300E E D 30.0" 29.6" 30.35" 5/32" 3-1/4" 2-3/4" 21/32" 86.0
4B380E E D 38.0" 37.6" 38.35" 5/32" 3-1/4" 2-3/4" 21/32" 109.0


Sort By:
1 2 3
4B34SD Sheave four-groove 4B36SD Sheave four-groove 4B38SD Sheave four-groove 4B40SD Sheave four-groove
4B42SD Sheave four-groove 4B44SD Sheave four-groove 4B46SD Sheave four-groove 4B48SD Sheave four-groove
4B50SD Sheave four-groove 4B52SD Sheave four-groove 4B54SD Sheave four-groove 4B56SD Sheave four-groove
4B58SD Sheave four-groove 4B60SD Sheave four-groove 4B62SD Sheave four-groove 4B64SD Sheave four-groove
   
 
1 2 3