7205‑ADB Duplex Angular Contact Ball Bearing 25x52x30mm for Machine Tool Spindle

• 7205‑ADB is a factory pre‑matched back‑to‑back duplex angular contact ball bearing set with 30‑degree contact angle. Two single bearings are paired in DB arrangement and pre‑loaded at factory, ready for direct installation. This open‑type unit can support both radial load and bidirectional axial load. It delivers high rigidity and good running accuracy, widely used on medium‑high speed precision rotating assemblies.

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• Factory pre‑matched DB back‑to‑back pairing, no extra adjustment required during assembly
• 30° contact angle, balances radial load capacity and high‑speed performance
• Pre‑loaded structure improves system rigidity and reduces shaft deflection
• Able to bear radial load together with bidirectional axial force
• Open construction supports oil or grease lubrication for high‑speed operation
• Good interchangeability, stable precision for continuous running

• Fit for precision machinery requiring high rigidity and dual‑direction axial support:

  • Machine tool spindles and precision processing equipment
  • High‑speed motor and blower rotating shafts
  • Packaging machinery and automation transmission units
  • General‑purpose precision equipment with complex combined loads

*Ready stock. Short lead time. Fast delivery. Send us your bearing list and let’s get started!

• 30 years professional bearing industry experience
• ISO certified strict quality inspection
• Flexible OEM & private label customization
• 3-5 days fast delivery for stocked bearings
• Full bearing series, universal interchangeable size
• Factory direct price & reliable after-sales service

*Need custom bearings? Share your drawings, specifications or requirements — we’ll find the right solution for you.