KOYO 7028DF Bearing_KOYO 7028DF Size and Details

KOYO 7028DF bearing

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KOYO 7028DF Bearing Details：

Bearing Name	7028DF
New Model	7028DF
Old Model	346128 bearing
product Model	7028DF
Category	Angular Contact Ball Bearings
Brand	KOYO Bearing
Inner Diameter d ( mm )	140
Outer Diameter D ( mm )	210
Thickness B ( mm )	66

KOYO 7028DF Bearing Bearing Size and Drawing：

KOYO 7028DF Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
KOYO 7028DT Bearing	140	210	66	KOYO	Angular Contact Ball Bearings
TBS 7028AC/DB Bearing	140	210	66	TBS	Angular Contact Ball Bearings
NTN 7028AC/DT Bearing	140	210	66	NTN	Angular Contact Ball Bearings
BARDEN 7028 C/ DT Bearing	140	210	66	BARDEN	Angular Contact Ball Bearings
FAG 7028 AC/ DB Bearing	140	210	66	FAG	Angular Contact Ball Bearings
FAG 7028 C/ DB Bearing	140	210	66	FAG	Angular Contact Ball Bearings
NTN 7028 AC/ DF Bearing	140	210	66	NTN	Angular Contact Ball Bearings
NSK 7028C/DF Bearing	140	210	66	NSK	Angular Contact Ball Bearings
BARDEN 7028C/DF Bearing	140	210	66	BARDEN	Angular Contact Ball Bearings
KOYO 7028C/DB Bearing	140	210	66	KOYO	Angular Contact Ball Bearings

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What are the structural components and design advantages of angular contact ball bearings?

Angular contact ball bearings consist of an inner ring, outer ring, steel balls, and a cage. The raceways of the raceways are designed with a contact angle (typically 15°, 25°, or 40°) between the bearing rings and the steel balls. They offer advantages such as the ability to simultaneously withstand radial and unidirectional axial loads, high limiting speed, high precision, good rigidity, and the ability to withstand bidirectional axial loads when installed in pairs.

What are the advantages of angular contact ball bearings compared to other similar bearings?

Compared to deep groove ball bearings, angular contact ball bearings have a higher axial load capacity and higher rigidity, making them suitable for precision positioning applications. Compared to tapered roller bearings, they have a higher limiting speed and lower friction, making them more suitable for high-speed operation. Compared to thrust ball bearings, they can simultaneously withstand combined radial and axial loads, and when used in pairs, they maintain high rigidity under bidirectional axial loads without the need for additional radial bearings.

What are the applicable applications and typical uses of angular contact ball bearings?

These bearings are suitable for high-speed, high-rigidity mechanical applications requiring precise positioning and subjected to combined loads. Typical applications include machine tool spindles, automobile wheel hubs, centrifugal pumps, high-speed electric spindles, industrial robot joints, aero-engine spindles, and precision instrument turntables.

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