This is a Boca 17x38x8mm Radial Bearing. This bearing is intended for use in a Nitro Engine with compatible dimensions. This bearing is open to allow oil to lubricate it during use.
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.
Lube: Shell AF2 Oil
Inner Diameter: 17mm
Outer Diameter: 35mm
Radial Play: C0
ABEC/ISO Rating: ABEC #1, ISO P0
Retainer Material: Chrome Steel
Enclosure #: Open
Ball Material: Chrome Steel 52100
Bearing Material: Chrome Steel 52100
Working Temperature: 121° C