Overview
The NTN 5U560 ball bearing, officially designated 628ZZ/1K, is a high-quality deep groove radial bearing manufactured by NTN Bearings Corp for industrial automation and motion control. This double-shielded precision bearing resists sustained high temperatures and is engineered for steel mills, thermal processing equipment, and other demanding industrial applications where temperature stability is critical.
Key Features
- Double metal shields provide superior contamination protection without contact friction
- Alloy steel construction for raceway and rolling elements ensures durability and long service life
- Pre-lubricated with long-life grease for immediate operation
- ISO Class 0 precision rating for smooth, balanced performance
- Pressed steel cage design optimized for high-speed operation
- Chrome-plated finish for corrosion resistance in harsh environments
Technical Specifications
Review the detailed specification table below to verify compatibility with your application before ordering.
Typical Applications
- Electric motor bearings and spindle systems
- Conveyor and material handling drives
- Industrial pump and compressor shafts
- Machine tool spindles and precision rotating equipment
- Thermal processing machinery in steel mills and foundries
- General industrial equipment operating at elevated temperatures
Compatibility & Replacements
Compatible With
- NTN deep groove ball bearing mounting applications
- Standard shaft and housing designs per ISO 492 tolerances
- High-temperature industrial motor and drive systems
- Equipment requiring ISO Class 0 precision bearings
Replaces / Drop-In Replacement For
- NTN 628 (standard designation)
- Direct replacement in applications previously using NTN 628 or equivalent deep groove radial bearings
- Verify shaft and housing dimensions match 8 mm bore and 24 mm outside diameter before installation
Works With
- Standard pillow block bearing units and mounted bearing assemblies
- Thermally rated motor frames operating up to 120°C continuous
- Lubricating systems using lithium or polyalphaolefin (PAO) grease
- Shaft diameters of 8 mm ±0.0015 mm per ISO 492 Class 0
