CYR3-1/2S Cam Yoke has a 3-1/2" roller diameter and is also referred to as a CYR3-1/2S track roller. CYR3-1/2S, by design, can withstand high load carrying capacities with minimal distorting or bending. To maximize efficiency and load capacity, a cam yoke roller bearing utilizes premium precision needle rollers in a full complement configuration (no cage). Our CYR3-1/2S bearings are supplied fully lubricated from the factory with superior multipurpose grease with a convenient relubricate-able hole found in the inner race. Additionally, this cam yoke is supplied with internal thrust washers that act like seals for dusty environments or applications where infrequent lubrication occurs (open style/ non-sealed rollers are also available).