7005UCDB DB Duplex Angular Contact Bearing 25×47×24mm Nylon Cage High Speed Spindle Bearing GQZ

• 7005UCDB is a factory pre-matched DB back-to-back duplex angular contact ball bearing set, combined with two 7005UC single bearings with 15° small contact angle, overall dimension 25×47×24mm. Equipped with lightweight UC polyamide ball-guided cage, it features ultra-low friction and low temperature rise under continuous high-speed operation. DB back-to-back layout expands load center distance, greatly improving structural rigidity and anti-overturning capacity, stably bearing combined radial load and bidirectional axial load. Open structure adapts circulating oil lubrication to reach ultra-high limiting speed. All bearing pairs are inspected for consistent light preload without secondary adjustment, superfinished raceways and steel balls deliver quiet vibration-free rotation, widely used for miniature high-precision high-speed rotary equipment.

*Send inquiry to get full technical datasheet and factory price of 7005UCDB bearing.

• 15° small contact angle, excellent ultra-high speed rotation performance
• UC nylon ball-guided cage, light weight, low friction and low heat generation
• DB back-to-back duplex pair, outstanding rigidity and anti-tilting performance
• Factory pre-adjusted light preload, uniform preload for direct installation
• Open design compatible with circulating oil lubrication for high-speed working conditions
• Multiple precision grades from P0 to P4 to meet different precision equipment demands

• Mini high-speed CNC spindles and small engraving machine rotary core parts
• Precision optical measuring instruments and laboratory testing equipment
• Micro high-speed motors and portable precision rotary devices
• Medical precision treatment equipment and beauty high-speed rotary machinery
• Semiconductor automation light-duty transmission modules
• Mini robot joint bearings and small precision gearboxes

• High-purity GCr15 bearing steel with complete heat treatment for stable hardness and wear resistance.
• Superfinished inner/outer raceways and steel balls ensure smooth, low-noise long-life running.
• Strict DB pairing inspection to guarantee uniform preload and consistent matching precision.
• Sufficient stock of 7005UCDB duplex bearing sets, support sample orders and fast bulk shipment.
• OEM laser marking, customized packaging and professional technical installation guidance available.

*Contact our technical team to select proper contact angle and duplex arrangement for your equipment.

*Stable stock for single row angular contact bearings, support fast bulk order shipment.