6808 Thin Section Deep Groove Ball Bearing 40*52*7mm Single Row SUNBEARINGProduct Specification

Bore diameter:	40 mm	Basic dynamic load rating	4,923 N
Outside diameter:	52 mm	Basic static load rating	4,178 N
Overall width:	7 mm	Max Speed (Grease)	12,000 rpm
Rows of Balls	Single	Ball Qty	21
Outer ring type:	Unsplit	Ball Dia (Dw)	3.5 mm
Radial clearance class	C0 Standard Clearance	Mass	0.035 kg
Closure type:	2RS	Max. Shaft Shoulder Dia. Inner (Ui)	43.2 mm
Material	Chrome Steel	Min. Housing Shoulder Dia., Outer (Uo)	48.99 mm
Cage Material	Sheet Steel	Precision	A1
Radius (min) (rs)	0.3 mm	factor f0	16.3

6808 Bearing Short DescriptionThe main features:

- Lubricant cannot be washed out
- Reduced risk of corrosion
- Larger lubricant reservoir
- Longer lubricant service life

Technical specifications:

Material: steel
Bearing Type: deep groove ball bearing 61808/6808
Material: 100Cr6 bearing steel
Dimension AØxIØxB: 40x52x7 mm
Seal: 2RS - double-sided grinding seal
Execution: Solid Oil technology
Silver

6808 Deep Groove Ball Bearing Material

6808 ball-bearing uses the polymer material. The polymer material is pressed into the free space of the bearing. This leaves a very small gap between the polymer and the rolling elements or the raceways, which allows the bearing parts to circulate freely. The polymer material has a sponge-like structure with millions of microscopic pores, which retain the lubricating oil due to the surface tension. In operation, the polymer matrix releases the lubricating oil into the small gap and thus ensures effective lubrication.

Note: When pressing in ball bearings, always make sure that the bearing is always pressed in via the outer ring, which is also the seat of the bearing.
Example hub: The hub body bearings are pressed in there via the outer ring. The bearing may therefore only be pressed in via the outer ring. Never over the inner ring.