This is a Boca 0.375x0.875x0.281" Radial Bearing. This bearing is intended for use in a Nitro Engine with compatible dimensions.
The purpose of a radial bearing is to reduce rotational friction and support loads. This is achieved by using two races to hold the balls and to spread the load through the balls. As the bearing race rotates it causes the balls to rotate. The ball provides for substantially less rolling resistance and coefficient of friction than if two flat surfaces were rotating.
Inner Diameter: 0.375 in.
Outer Diameter: 0.875 in.
Width: 0.281 in.
Radial Play: C3
ABEC/ISO Rating: ABEC #1, ISO P0
Retainer Material: Phenolic
Enclosure #: One Shield
Ball Material: Chrome Steel 52100
Bearing Material: Chrome Steel 52100
Working Temperature: 121° C