Overview
The SKF 6220/C3 is a single-row deep groove ball bearing designed for industrial applications requiring reliable radial and axial load support. With a bore diameter of 100 mm, outside diameter of 180 mm, and width of 34 mm, this bearing delivers consistent performance across machinery, electric motors, pumps, and automation systems. The C3 clearance specification indicates increased internal radial clearance, making it suitable for higher operating temperatures and higher rotational speeds.
Key Features
- High Load Capacity: 127 kN dynamic load rating and 93 kN static load rating for demanding industrial duty
- Low Friction Design: Hardened steel balls and precision raceways minimize friction and vibration, enabling high-speed operation at up to 7,500 r/min reference speed
- Dual Load Handling: Accommodates radial and axial loads simultaneously in both directions, simplifying equipment design
- C3 Clearance: Increased internal clearance for high-temperature and high-speed applications up to 120°C
- Standard Steel Cage: Durable steel cage construction for consistent ball retention and guidance
- Open Design: No seals or shields; ideal for clean, dry environments with scheduled lubrication
Technical Specifications
- Bore Diameter (d): 100 mm
- Outside Diameter (D): 180 mm
- Width (B): 34 mm
- Dynamic Load Rating: 127 kN
- Static Load Rating: 93 kN
- Fatigue Load Limit: 3.35 kN
- Reference Speed: 7,500 r/min
- Limiting Speed: 4,800 r/min
- Internal Clearance: C3 (Greater than normal)
- Maximum Operating Temperature: +120°C
- Weight: 3.3 kg
- Cage Type: Steel (Standard)
- Seal Type: Open (No seal)
Typical Applications
- Industrial electric motors and gearboxes
- Centrifugal pumps and compressors
- Machine tool spindles
- Conveyor systems
- Fans and blowers
- Automotive and agricultural machinery
- Automation equipment requiring high-speed operation
Compatibility & Replacements
Compatible With
- ISO 286 metric bearing housings designed for 100 mm bore diameter
- Standard industrial motor shafts (100 mm diameter)
- OEM equipment requiring 6220-series deep groove bearings
- Machinery with shaft-mounted and housing-mounted configurations
Replaces / Drop-In Replacement For
- SKF 6220 (standard clearance) – verify load and temperature requirements before substitution
- SKF 6220/C2 – upgrade for higher-speed, higher-temperature applications
- FAG/Schaeffler 6220/C3 – equivalent metric deep groove bearing
Works With
- Standard mineral and synthetic bearing greases (SKF LGMT 2, Shell Alvania, Kluber Isoflex, etc.)
- ISO VG 32-68 mineral oils for oil-lubricated systems
- Sealed and shielded variants available (6220-2RS1/C3, 6220-2Z/C3) for contaminated environments
- Hybrid ceramic versions (6220/HC5C3) for extreme temperature and speed demands
