This 51207 bearing is a Single direction thrust bearing with a flat housing locating washer
The bearing's dimensions are Inside Diameter 1 11/16
This 6812 DD bearing is a Sealed Thin Section Radial Ball Bearing with a standard radial internal clearance
72 21 CD /P4A DG A Series - Light Bore Size - 105mm 15 Degree Contact Angle Precision Rating Duplex Universal Light Preload
LWL20 R360 B H S2 Standard Stainless Steel Miniature Linear Rail 360mm - Rail Length Ball Retained Type High Accuracy Class S2 Specification
NU2236-E-M1A - FAG Cylindrical Roller Bearing - 180x320x86mm IKO CRH26VBUU This 51207 bearing is aThis NU2236 E M1A bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, an increased capacity design, a two piece solid brass cage, rib guided on outer ring and a normal radial internal clearance. The bearing's dimensions are 180x320x86. NU 22 36 E M1A Two Flanges on Outer Ring and No Flanges on Inner Ring Light, Wide Series 180mm Bore Size Increased Capacity Design Solid Brass Cage, Two piece, Rib guided on Outer