HCB7008-C-T-P4S Spindle Angular Contact Ball Bearings HCB7008.C.T.P4S NSK 40 x

Product Specification

High-temperature materials precision NSK spindle bearings HCB7008-C-2RSD-T-P4S heavier twin hydraulic oil seal

Detail of NSK spindle bearings HCB7008-C-2RSD-T-P4S

1)Brand: NSK
2)Model: HCB7008-C-2RSD-T-P4S-UL
3)Series: HCB7008-C-2RSD-T-P4S
4)Inner diameter: 40 (mm)
5)Outside diameter: 68 (mm)
6)Thickness: 15 (mm)
7)Basic static load rating (KN): 11
8)The basic dynamic load rating (KN): 14.3
9)Weight: 0.17 (kg)
10)Greased speed limit: 30000r/min
11)Oil lubrication speed limit: 45000r/min
12)Note: ceramic balls, 15 degrees, resin cage, P4 level, sealed on all sides, universal pairing

Introduction of angular contact ball bearings

Angular contact ball bearings can support radial and axial loads. Able to work at higher speeds. The contact angle, the higher the axial load carrying capacity. High-precision and high-speed bearings usually take 15-degree angular contact ball bearingsAngular contact ball bearingsIn the axial force, the contact angle will increase. Single row angular contact ball bearings can withstand axial load in one direction, while the radial load, will cause additional axial force. And the only limit axial displacement in one direction, the shaft or housing. If paired installation, so that one pair of bearing outer ring relative to that wide side face of wide and narrow side facing the narrow end. This can avoid additional axial force, and the shaft or housing to limit the axial clearance range in both directions.Angular contact ball bearing raceway for its inner and outer rings relative displacement on the horizontal axis, so it can bear radial load and axial load - combined load (single row angular contact ball bearings can withstand axial load in one direction, So often adopted installed in pairs).Cage made of brass, synthetic resins, etc., depending on the bearing forms, and application conditions.Angular contact ball bearings: 7000C type (α = 15 °), 7000AC type (α = 25 °) and 7000B (α = 40 °) types. bearing outer ring locking in the general inner and outer rings can not be separated, can withstand radial and axial joint load and axial load in one direction. Axial load capacity of a decision by the contact angle, the contact angle is large, the ability to withstand high axial loads. This kind of bearing can limit the axial displacement in a direction of shaft or housing.
The main purpose
 

Single row angular contact ball bearings: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft
 

Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery

Other types of NSK spindle bearings

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FAQ

What is preload, and why is it important in the context of Angular Contact Ball Bearings?

Preload in Angular Contact Ball Bearings refers to intentionally introducing a slight axial load during assembly to remove play between the balls and races, enhancing rigidity and precision. This is particularly important in high-precision machinery like CNC machines, where minimal backlash and high stability are required. By carefully adjusting the preload, the bearing's running accuracy and stiffness can be optimized. However, excessive preload can lead to increased friction, heat generation, and reduced bearing life. Therefore, a balanced preload setting is vital to exploit the full potential of Angular Contact Ball Bearings without compromising their longevity.

How should Angular Contact Ball Bearings be mounted and maintained to ensure longevity?

Proper mounting and maintenance are key to maximizing the service life of Angular Contact Ball Bearings. These bearings are often used in pairs (back-to-back, face-to-face, or tandem arrangements) to manage bidirectional thrust loads. During installation, ensure they are mounted with the correct orientation and preload, following the manufacturer's guidelines. Lubrication with a high-quality grease or oil, compatible with the operating temperature and speed, is essential. Regular inspection for signs of wear, noise, or vibration, along with timely lubrication replenishment, helps prevent premature failure. Remember, maintaining clean and controlled operating environments also significantly contributes to the longevity of Angular Contact Ball Bearings.