Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2013年7月26日星期五
SQGTC increase the variety of glass bearing inspection project
National security glass and quartz glass Product Quality Supervision and Inspection Center (SQGTC), recently by the relevant national authority, after re-evaluation, an increase of more glass products bearing inspection items.
National security glass and quartz glass products belonging to the State Quality Supervision and Inspection Center of Quality Supervision, Inspection and Quarantine authorized China National Testing Center National Accreditation tapered bearing accredited national testing center. The re-evaluation, the center for the seizure of the glass product range includes: coated glass, hollow glass, float glass, sheet glass, tinted glass, patterned glass, laminated glass, tempered and semi-tempered glass, fire-proof glass, automotive safety glass , aircraft glazing, ship glass, quartz glass, and cast stone products.
National security glass and quartz glass product quality supervision and inspection center dedicated to glass, quartz glass and other products, testing, testing technology research and related standards revision work. Center in 1990, passed the U.S. official agencies AAMVA (American Association of Motor Vehicle Administration) review, as its foreign inspection AIs can be carried out to the American National Standards-based automotive safety glass DOT certification testing.
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