Outer spherical bearing accuracy grade
From: XingMao DATE: 2025/8/8 Hits: 1348
Outer spherical bearing accuracy grade
The precision grades of spherical outer ring bearings typically follow ISO standards, categorised into P0 (general grade), P6, P5, P4, and P2 grades, with higher grades indicating higher precision.
Overview of Precision Grades for Spherical roller bearings
As a variant of Deep Groove Ball Bearings, spherical roller bearings share the same...
The precision grades of spherical outer ring bearings typically follow ISO standards, categorised into P0 (general grade), P6, P5, P4, and P2 grades, with higher grades indicating higher precision.
Overview of Precision Grades for Spherical roller bearings
As a variant of Deep Groove Ball Bearings, spherical roller bearings share the same precision grade classification as standard rolling bearings, primarily based on ISO standards, which are divided into five grades: P0, P6, P5, P4, and P2. Among these, P0 represents standard precision, while P2 denotes the highest precision.
Characteristics and Applications of Each Grade
1. P0 Grade: Suitable for general machinery with rotational precision exceeding 10 μm, such as ordinary machine tools and automotive transmission systems, offering the lowest cost.
2. P6 Grade: Higher precision than P0, suitable for medium-precision applications with rotational precision between 5 and 10 μm, such as the rear support of ordinary lathes.
3. P5 Grade: Precision grade, suitable for high-speed or high-precision requirements (5-10 μm) equipment, such as lathe front supports.
4. P4/P2 Grade: Ultra-precision grade, used in applications with rotational precision less than 5 μm or extremely high rotational speeds, such as precision grinding machine spindles and aerospace instruments, with significantly higher prices than other grades.
International standard comparison
Different countries may use different standard names, but the core grades correspond to ISO:
Chinese GB/T standard: P0-P2 align with ISO.
American ABEC standard: ABEC1-9 correspond to different precision levels, with ABEC9 approximating P2 grade.
German DIN standard: Uses the same naming as ISO (P0-P6).
