Preferred Choice for Intelligent Precision Instruments: NKA-Series Constant-Section Thin-Section Bearings Enable High-Precision Rotational Positioning
In intelligent precision measuring instruments, rotary stages place extremely high demands on bearing positioning accuracy, rigidity, and space efficiency. Constant-section thin-section bearings are particularly well-suited for such applications due to their uniform structure and consistent wall thickness, which enable stable support within limited envelope dimensions.
The NKA020CP0 is a deep-groove ball thin-section bearing designed specifically for rotating components in precision instruments, such as indexing tables. The series features a constant cross-sectional height and includes multiple variants: NKA025CP0, NKA030CP0, NKA035CP0, NKA040CP0, NKA042CP0, NKA045CP0, NKA047CP0, NKA050CP0, and others. Among these, the NKA020CP0 is one of the representative models of Luoyang Thin-Walled Precision Bearing Co., Ltd.’s KA-series deep-groove ball constant-section thin-section bearings and serves as a direct replacement for INA’s CSCA020 bearing.
Adopting a deep-groove ball configuration, the NKA020CP0 has the following dimensions: bore 50.8 mm, outside diameter 63.5 mm, and height 6.35 mm. Its lightweight and compact design make it especially suitable for rotating mechanisms requiring high positioning accuracy, such as articulated robots and optical metrology equipment.
For reference, dimensional drawings and a table of the NKA series are provided below.
LuoyangBOBIPrecision Bearing Co., Ltd. (registered trademark NERT®, also referred to as “Luoyang Thin-Walled Bearings” or “NERT® Bearings”) was established in February 2010 and is located in Luoyang, a major industrial city in central China. The company specializes in the R&D and manufacture of constant-section thin-section bearings. Its product range includes: inch/metric open and sealed constant-section thin-section bearings, standard precision ball bearings, precision crossed roller bearings, slewing bearings, as well as custom-engineered bearings and bearing assemblies. Accuracy grades available include P0, P6, P5, and P4 per customer requirements. The inner diameter coverage for thin-section bearings spans from 1 inch (25.4 mm) to 40 inches (1016 mm), with sealed versions available up to 20 inches (508 mm) bore.
