Some self-aligning ball bearings have balls that protrude from the side face as shown below
0 16 30 140 2 06 TANK-POWEREP933180 18 R9
6299 in 16
The 1/4in (6mm) diameter shackle is 15/16in (24mm) long and made of hardened steel
SMC CQ2B25-5DC Compact Cylinder With Through-Hole, Standard Mounting, Bore Size 25 mm Chicago Grip Some self-aligning ball bearings haveOVERVIEW Double acting, single rod, compact cylinder Bore sizes (mm): 12, 16, 20, 25, 32, 40, 50, 63, 80, 100 Standard stroke range (mm): 5 to 100 Port threads: M (12 to 25 bore); Rc, NPT or G (32 to 100 bore) Auto switch capable SPECIFICATIONS Compact Cylinder Type Standard Bore Diameter 25 mm Stroke 5 mm Piston Action Double Acting Mounting Type Through Hole Rod Type Single Rod Cushion Type Rubber Bumper Cylinder Series CQ2 Port Thread Standard ISO