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Linear Joint – Paired Four-Point Contact Ball Bearing

Features: Designed for the front end of planetary roller screws, where installation space is limited; capable of handling large bidirectional axial loads while maintaining tight tolerances for axial displacement and angular misalignment. It employs a lightweight, slim‑profile paired four‑point contact bearing, which offers higher load capacity than deep‑groove ball bearings and significantly improved space efficiency compared to angular contact ball bearings. It is also suitable for applications such as security systems and automotive steering systems.

Product Description

Features: Applied to the front end of planetary roller screws, where design space is limited and the component must withstand substantial bidirectional axial loads while maintaining tight tolerances for axial displacement and angular runout; a lightweight, thin‑section paired four‑point contact bearing is employed, offering higher load capacity than deep‑groove ball bearings and significantly improved installation envelope compared with angular contact ball bearings. It can also be used in security systems, automotive steering systems, and other applications.

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Single-row deep groove ball bearing

It is the most typical structural form among rolling bearings and finds wide application. In addition to supporting radial loads, it can also accommodate axial loads in both directions. With a low friction torque, it is ideally suited for applications requiring high-speed rotation, low noise, and minimal vibration.

Angular contact ball bearing

They are primarily used in high-speed rotating applications with relatively light loads and can withstand combined radial and axial loads. When installed in pairs, angular contact ball bearings can handle combined radial and axial loads, with the radial component being dominant, and they can also accommodate purely radial loads. In a tandem arrangement, they can only support axial loads in one direction, whereas the other two arrangements can accommodate axial loads in either direction.

Cylindrical roller bearing

Cylindrical roller bearings are line-contact bearings. They offer high load-carrying capacity and primarily support radial loads. The rolling elements experience low friction against the raceway shoulders, making them well suited for high-speed operation. Depending on whether the rings are equipped with shoulders, they can be classified into single-row cylindrical roller bearings—such as NU, NJ, NUP, N, and NF—and double-row cylindrical roller bearings—such as NNU and NN.

Hangzhou Chichuang Shaft Research Technology Co., Ltd.

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Chichuang·Hangzhou

Phone: 0571-89010675

Address: Floor 4, Unit 2, Building 10, No. 505 Xingguo Road, Linping District, Hangzhou City

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Address: Room 2405, Building 111, Phase I, Vanke City, Nanbu Bay, Humen Town, Dongguan City

Chichuang·Chongqing

Phone: 0571-89010675

Address: Building 4, No. 5 Huoju Avenue, Jiulongpo District, Chongqing City

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