Overview
The SKF 6318 JEM is a single-row deep groove radial ball bearing engineered for reliable power transmission in industrial machinery. This metric-sized bearing features a 90mm bore, 190mm outer diameter, and 43mm width with open (unshielded) design, making it suitable for high-speed radial and low axial load applications across textiles, motors, pumps, and gearboxes.
Key Features
- Deep, uninterrupted raceway for efficient radial load distribution
- Open closure design for direct lubrication access
- Steel cage for reliable ball retention and spacing
- ABEC 1 precision grade
- Capable of carrying axial loads in both directions
- High-speed radial load capacity
- C3 radial clearance specification
Technical Specifications
- Bore Diameter (ID): 90 mm
- Outer Diameter (OD): 190 mm
- Width: 43 mm
- Bore Type: Straight / Cylindrical
- Closure Type: Open
- Cage Material: Steel
- Radial Clearance: C3
- Precision Grade: ABEC 1
- Material: Bearing Steel (52100)
- Series: 6300 Series (Medium)
Typical Applications
The SKF 6318 JEM is ideal for machinery requiring high-speed radial loading with moderate axial loads, including:
- Electric motors and industrial motors
- Pumps and centrifugal equipment
- Gearboxes and power transmissions
- Textile machinery
- General industrial rotating equipment
Compatibility & Replacements
Compatible With
- Standard deep groove ball bearing mounting applications
- Industrial machinery with 90mm bore shaft requirements
- Equipment designed for metric bearing dimensions
- Oil and grease lubrication systems
Replaces / Drop-In Replacement For
- SKF 6318 (open variant)
- SKF 6318/C3 (with standard C3 clearance)
- Equivalent 6318 bearings from NTN, NSK, Koyo, FAG, and Timken manufacturers
Works With
- Standard bearing housings and mounting brackets designed for 190mm OD dimensions
- Oil-based and grease-based lubrication systems
- High-speed spindles and motor applications
- Direct-lubricated bearing assemblies (open design allows greasing without removal)
