The world’s first solar-powered wireless keyboard was born in recent days. The top of this keyboard is equipped with a row of solar photovoltaic panels that can be charged by sunlight or ordinary lights. When the battery is full, it can work continuously in the dark for up to 3 months. There is also a reminder of the amount of light on the keyboard, which can tell you the current lighting intensity at any time. In addition, this keyboard is made of recyclable plastic, which also demonstrates Logitech's energy saving and environmental protection concept while ensuring product quality and longevity.

Angular Contact Ball Bearings

There are raceways on the inner and outer rings of angular contact ball bearings, and the inner and outer rings can be displaced relative along the axial direction of the bearing. These bearings are particularly suitable for combined loads, i.e. loads that act in both the radial and axial directions. The axial load bearing capacity of angular contact ball bearings increases with the increase of contact angle α. The contact angle is the angle between the contact point connection between the ball and the raceway in the radial plane and the perpendicular line of the bearing axis.
The types of angular contact ball bearings are divided into: α=15° angular contact ball bearings (70000C type); α=25° angular contact ball bearings (70000AC type); α=40° angular contact ball bearings (70000B type); Back-to-back paired double angular contact ball bearings [70000C(AC, B)/DB type]; Face-to-face paired double angle contact ball bearings [70000C(AC, B)/DF type]; Tandem Paired Double Angular Contact Ball Bearings [70000C (AC, B)/DT Type]; Double row angular contact ball bearings with ball notch (00000 type); Double row angular contact ball bearings without ball notch (type 00000A); Double row angular contact ball bearing without ball notch, one side with dust cap (00000A-Z type); Double row angular contact ball bearings without ball notch, with dust caps on both sides (00000A-2Z type); Double row angular contact ball bearing with sealing ring on one side without ball notching (00000ARS type); Double row angular contact ball bearings with sealing rings on both sides without ball notching (00000A-2RS type); Four-point angular contact ball bearings (QJ0000 type), a total of 13 types

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