6902-2RS Thin Section Radial Ball Bearing 15*28*7mm SUNBEARINGProduct Specification

Bore diameter:	15 mm	Basic dynamic load rating	4,321 N
Outside diameter:	28 mm	Basic static load rating	2,259 N
Overall width:	7 mm	Max Speed (Grease)	26,000 rpm
Rows of Balls	Single	Ball Qty	10
Outer ring type:	Unsplit	Ball Dia (Dw)	3.969 mm
Radial clearance class	C0 Standard Clearance	Mass	9.00 g
Closure type:	2RS	Max. Shaft Shoulder Dia. Inner (Ui)	19 mm
Material	Chrome Steel	Min. Housing Shoulder Dia., Outer (Uo)	24 mm
Cage Material	Sheet Steel	Precision	A1
Radius (min) (rs)	0.3 mm	Max Speed (Oil)	30,000

6902 Bearing Short Description

The 6902 bearing is a 15mm ball bearing that is found in many applications. The 6902-2RS ball bearing has two contact rubber seals one on each side of the ball bearing. The 6902-ZZ ball bearing has two non-contact metal shields one on each side of the ball bearing. If your application requires a 6902 ball bearing with only one seal or shield you can get this ball bearing and take one of the shields or seals off. This 15mm inch ball bearing is high quality and can take electric motor demands if needed.

6902 Bearing Features

ABEC 3 bearings come with high precision balls that are within 10/1,000,000" round, twice as round as the industry standard, at its highest level. Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough, and very durable. Polished to a mirror finish for ABEC-3 precision and noiseless movement.

These bearings have 35-40 % more load capacity than standard radial bearings. This is accomplished with a special design where the maximum number of balls is inserted into the bearing. The race grooves are deeper on these bearings for more lateral support for the twisting and multiple forces associated with mountain bike pivots.

Radial Ball Bearing has moderate load-carrying capacity in both radial and axial directions and is good for high speed and high accuracy. Rubber seal or metal shield on one or both sides of the bearing helps keep out dirt and contaminants. In case two seals or two shields are used, the bearing is lubricated by grease for its life when manufactured. The bearing with 10 to 75 mm bore (6000 to 6300 series) & 10 to 50 (6800 & 6900 series) improves reliability with newly designed seal and shield, and suitable grease. Quiet rotation is expected by improved accuracy of components, and saving cost and energy is also expected by lower power loss provided by low and stable running torque.