High Precision Deep Groove Ball Bearing 6403 6804 6904 16004 6004 6204 for CNC Machine Tools

Product Specifications

Application Industries

Reduce CNC Downtime with Precision Deep Groove Ball Bearings 6403-6204

CNC machine operators know the cost of unexpected spindle failure—lost production hours, missed deadlines, and costly repairs. Many face challenges sourcing genuine high-precision bearings like 6403, 6804, and 6204, with long lead times for cross-brand orders and inconsistent quality from unreliable suppliers.

Genuine P4/P2 Grade Bearings in Stock for Immediate Delivery

As an officially authorized distributor, we maintain ready stock of High Precision Deep Groove Ball Bearings including 6904, 16004, and 6004 models, ensuring same-day processing for urgent CNC maintenance needs. Our inventory covers precision grades P4 and P2, critical for maintaining the tight tolerances required in CNC spindle applications where even micron-level deviations affect machining accuracy.

Engineered for High-Speed CNC Operations

These Deep Groove Bearings for CNC machines excel in high-rotation scenarios typical of machining centers and lathes. Designed to handle radial and axial loads simultaneously, they provide stable performance at continuous operating speeds up to 15,000 RPM—ideal for precision cutting, milling, and drilling operations. The bearings' optimized internal geometry reduces friction and heat buildup, extending spindle life in 24/7 production environments.

Technical Precision That Drives CNC Performance

Our Precision Ball Bearings meet DIN standards for dimensional accuracy, with bore tolerance (d) controlled to ±0.002mm and radial runout limited to 3μm for P4 grade. The 17*62*17mm specification (ID*OD*width) ensures proper fit in standard CNC spindle assemblies, while grease lubrication options balance friction reduction with contamination resistance. The steel cage design enhances rigidity, critical for maintaining cutting tool stability during heavy machining passes.

Why Authentic Bearings Matter for CNC Reliability

Counterfeit bearings often fail prematurely due to substandard materials and poor manufacturing tolerances, leading to unexpected spindle lockups that can cost $5,000+ in downtime per hour for high-volume production lines. Our Germany Sweden Japan Bearings come with full certification documentation, traceable to original manufacturing batches, ensuring compliance with ISO 9001 quality standards. The investment in genuine precision bearings reduces total cost of ownership by minimizing unplanned maintenance and extending mean time between failures.

Trusted by 800+ CNC Facilities Worldwide

Packaging & Shipping

• Professional shockproof packaging with dustproof barriers to preserve bearing accuracy during transit
• Standard package size: 8.20cm × 8.20cm × 3.70cm with gross weight of 2.270kg per unit
• Global logistics options including DHL, FedEx, and UPS for 3-7 day delivery to major industrial hubs
• Real-time shipment tracking and consolidated documentation for customs clearance
• Minimum order quantity: 1 unit, supporting emergency repair needs and small-batch replacements

Get Your CNC Bearings Shipped Today

Don’t let bearing shortages halt your production schedule. Send us your required model numbers (6403, 6804, 6904, 16004, 6004, or 6204), CNC machine details, and quantity for a same-day quote. Our ready stock ensures your bearings ship within 24 hours, minimizing spindle downtime and keeping your production on track.

Frequently Asked Questions