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Ningbo Precision Bearing Manufacturer: Deep Groove and Angular Contact Bearings to P5/P6

We are a precision rolling bearing manufacturer based in Ningbo, specializing in deep groove ball bearings and angular contact ball bearings for OEM and Tier-1 customers in Germany, Austria and Switzerland. As a precision angular contact bearing manufacturer, we organize production around ISO 492 dimensions and P5/P6 tolerance grades: inner ring radial runout is held in the 2–5 μm range, and matched angular contact ball bearings are supplied as DB/DF preloaded sets for gearboxes, motor spindles and industrial pump stations to compare and select from. On the production side we run centerless grinding, superfinishing and turning; on the inspection side we use profilometers, roundness testers, hardness testers and vibration meters to sample full dimensions and rotational flexibility for every batch. Standard order lead time is 25–35 days, with rush replenishment confirmed against the production schedule. Monthly capacity is planned at 2 million sets of deep groove ball bearings and 600,000 sets of angular contact ball bearings, and we can reserve capacity and inspection frequency against your annual volume reduction plan.

  • Origin and scope: Ningbo plant dedicated to deep groove and angular contact ball bearings, with no mixed production of tapered roller or other categories
  • Tolerance grades: P5/P6 are our regular delivery grades, key dimensions marked per ISO 492, matched sets noted with preload and contact angle (15°/25°/40°)
  • System certifications: quality system operated to ISO 9001; automotive and industrial supply lines managed to IATF 16949 principles, with traceable material and heat treatment batch records
  • Delivery rhythm: 25–35 day lead time for standard bulk orders, with dimensional reports and material certificates (EN 10204 3.1) shipped with the batch or on request
  • Inspection capability: profilometer measurement of inner ring radial runout, batch sampling of rotational flexibility and noise after superfinishing, hardness sampled per heat treatment batch

Send us your models and drawings, we reply with a selection and a quote

Tell us the duty (speed, load, accuracy class, mounting space) and your target delivery date; we return a mountable model and lead time within our P5/P6 capability.

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