6B QD Bushed Pulleys

6B QD Bushed Pulleys

6B 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 SD, SK, SF, or E QD bushings, which we also stock. The majority of our six-groove 6B 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.

6B 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)
6B34SD SD E 3.4" 3.0" 3.75" 3-31/32" 4-3/4" 1-13/16" 1-1/32" 6.7
6B36SD SD E 3.6" 3.2" 3.95" 3-31/32" 4-3/4" 1-13/16" 1-1/32" 7.4
6B38SD SD E 3.8" 3.4" 4.15" 3-31/32" 4-3/4" 1-13/16" 1-1/32" 8.0
6B40SD SD E 4.0" 3.6" 4.35" 3-19/32" 4-3/4" 1-13/16" 21/32" 8.4
6B42SD SD E 4.2" 3.8" 4.55" 3-19/32" 4-3/4" 1-13/16" 21/32" 9.0
6B44SD SD E 4.4" 4.0" 4.75" 3-19/32" 4-3/4" 1-13/16" 21/32" 9.7
6B46SD SD A 4.6" 4.2" 4.95" 21/32" 4-3/4" 1-13/16" 2-9/32" 10.1
6B48SD SD A 4.8" 4.4" 5.15" 21/32" 4-3/4" 1-13/16" 2-9/32" 10.6
6B50SD SD A 5.0" 4.6" 5.35" 21/32" 4-3/4" 1-13/16" 2-9/32" 11.0
6B52SD SD A 5.2" 4.8" 5.55" 21/32" 4-3/4" 1-13/16" 2-9/32" 12.0
6B54SK SK A 5.4" 5.4" 5.75" 17/32" 4-3/4" 1-15/16" 2-9/32" 13.0
6B56SK SK A 5.6" 5.2" 5.95" 17/32" 4-3/4" 1-15/16" 2-9/32" 14.0
6B58SK SK A 5.8" 5.4" 6.15" 17/32" 4-3/4" 1-15/16" 2-9/32" 14.6
6B60SK SK A 6.0" 5.6" 6.35" 17/32" 4-3/4" 1-15/16" 2-9/32" 15.0
6B62SK SK A 6.2" 5.8" 6.55" 17/32" 4-3/4" 1-15/16" 2-9/32" 16.0
6B64SK SK A 6.4" 6.0" 6.75" 17/32" 4-3/4" 1-15/16" 2-9/32" 17.0
6B66SK SK A 6.6" 6.2" 6.95" 17/32" 4-3/4" 1-15/16" 2-9/32" 18.0
6B68SK SK A 6.8" 6.4" 7.15" 17/32" 4-3/4" 1-15/16" 2-9/32" 19.0
6B70SF SF A 7.0" 6.6" 7.35" 27/32" 4-3/4" 2-1/16" 1-27/32" 20.0
6B74SF SF A 7.4" 7.4" 7.75" 27/32" 4-3/4" 2-1/16" 1-27/32" 22.0
6B80SF SF A 8.0" 7.6" 8.35" 27/32" 4-3/4" 1-15/16" 1-27/32" 24.0
6B86SF SF A 8.6" 8.2" 8.95" 27/32" 4-3/4" 1-15/16" 1-27/32" 26.0
6B94SF SF A 9.4" 9.0" 9.75" 27/32" 4-3/4" 1-15/16" 1-27/32" 27.0
6B110SF SF A 11.0" 10.6" 11.35" 27/32" 4-3/4" 1-15/16" 1-27/32" 32.0
6B124SF SF A 12.4" 12.0" 12.75" 27/32" 4-3/4" 1-15/16" 1-27/32" 29.0
6B136SF SF A 13.6" 13.2" 13.95" 27/32" 4-3/4" 2-1/16" 1-27/32" 44.0
6B154SF SF A 15.4" 15.0" 15.75" 27/32" 4-3/4" 2-1/16" 1-27/32" 50.0
6B160SF SF A 16.0" 15.6" 16.35" 27/32" 4-3/4" 2-1/16" 1-27/32" 54.0
6B184SF SF A 18.4" 18.0" 18.75" 27/32" 4-3/4" 2-1/16" 1-27/32" 62.0
6B200E E A 20.0" 19.6" 20.35" 7/32" 4-3/4" 2-3/4" 1-25/32" 74.0
6B250E E A 25.0" 24.6" 25.35" 7/32" 4-3/4" 2-3/4" 1-25/32" 96.0
6B300E E A 30.0" 29.6" 30.35" 7/32" 4-3/4" 2-3/4" 1-25/32" 119.0
6B380E E A 38.0" 37.6" 38.35" 7/32" 4-3/4" 2-3/4" 1-25/32" 134.0