Dimensional and Precision Parameters
Core specifications: Nominal dimensions (such as inner diameter, outer diameter, and width/stroke), as well as dimensional tolerances, geometric tolerances, and surface roughness.
Motion-related components: Additional requirements include rotational accuracy, repeatability, and fit clearance class; some high-precision applications require tolerance control within ±0.005 mm.
Mechanical Property Parameters
Load-bearing metrics: Rated dynamic load, rated static load, limiting speed, and maximum permissible impact load.
Operational suitability metrics: Surface hardness and core toughness to prevent brittle fracture under heavy or alternating loads; some heavy-duty components require a surface hardness exceeding HRC60.
Environmental Adaptability Parameters
Temperature tolerance: Standard operating temperature ranges from -40°C to +130°C, with extended ranges available for specialized applications.
Weather resistance:Salt spray test duration, tolerance to hot and humid environments, and corrosion resistance ratings; suitable for harsh environments such as outdoor areas with high humidity and salinity, or exposure to acidic chemical gases.
