Boca Bearings 12x21x5mm Ceramic Rear Bearing (TRX 2.5, 2.5R and 3.3)

Boca Bearings
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
This is a Boca 12x21x5mm Ceramic 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: 12mm
Outer Diameter: 21mm
Width: 5mm
Radial Play: C3
ABEC/ISO Rating: ABEC #3, ISO P6
Retainer Material: Polymite Plastic
Enclosure #: Open
Ball Material: Ceramic SI3N4
Bearing Material: Chrome Steel 52100
Working Temperature: 121 C

This product was added to our catalog on May 20, 2008.