B4 Air-Hydraulic Booster

Miller Boosters are built-up from standard Miller Air and Hydraulic Cylinder parts and are manufactured to the same high standards of quality and precision construction for which Miller Cylinders are so widely recognized. 

Heads, caps, and mountings are machined from solid steel bar stock; Hydraulic rams are case-hardened and hard chrome plated. 

Cushioning available at cap end without dimension change.

Miller B4 Air-Hydraulic Boosters are for double or singe acting use and are available in model 50 series, 62 64, 72, 74 and 77 mounting styles (some restrictions in certain bore sizes).