Boston Gear 4L-3/4 Two-Bolt Pillow Block Bearing is a pillow block ball bearing unit with a 3/4 in bore mounted on a two-bolt base, featuring a cast-iron housing for standard-duty service. It uses an eccentric locking collar for shaft retention and preload, providing a secure fit on the 3/4 in shaft. The unit, listed by Boston Gear (RRX) as 4L 3/4 Pillow Block Ball Bearing Unit, is designed for fixed, non-expansion mounting. Typical applications include small conveyors and other general industrial automation that require a compact, rigid support for 3/4" shafts.
