Overview
The SKF 6320 JEM is a medium-series deep groove ball bearing engineered for demanding radial and axial load applications. This bearing features a cylindrical bore design and is part of SKF’s widely trusted 6300 series, delivering proven reliability in motors, pumps, gearboxes, and industrial machinery. The open design with C3 internal clearance makes it suitable for high-speed operation while accommodating both radial and axial loads in either direction.
Key Features
- Deep groove design — enables smooth, low-friction rotation and handles combined radial and axial loads bidirectionally
- Steel cage construction — reduces wear and extends bearing life under high-speed conditions
- Low noise and vibration — optimized raceway geometry minimizes operational noise, critical for precision machinery
- High-speed capable — reference speed of 6700 rpm and limiting speed of 4300 rpm support demanding industrial duty cycles
- ABEC 1 precision grade — meets industrial accuracy standards for general machinery applications
- Open design — simplifies mounting and allows easy access for lubrication maintenance
Technical Specifications
The following specifications define the SKF 6320 JEM’s performance envelope:
- Bore Diameter (d): 100 mm
- Outer Diameter (D): 215 mm
- Width (B): 47 mm
- Basic Dynamic Load Rating: 174 kN
- Basic Static Load Rating: 140 kN
- Fatigue Load Limit (Pu): 4.75 kN
- Reference Speed: 6700 rpm
- Limiting Speed: 4300 rpm (open design)
- Internal Clearance: C3 (greater-than-normal)
- Cage Type: Steel
- Closure Type: Open
- Precision Grade: ABEC 1
- Maximum Operating Temperature: +120°C
- Bore Radius (r1, r2 min): 3 mm
Typical Applications
The SKF 6320 JEM excels in diverse industrial environments where smooth, efficient power transmission is critical:
- Electric motors — supports high-speed rotor assemblies with minimal energy loss
- Pumps — handles bidirectional axial and radial loads in centrifugal and reciprocating units
- Gearboxes — accommodates combined loading in industrial and agricultural drive systems
- Machine tools — provides precision rotation with low noise for spindles and drive shafts
- Conveyor systems — supports intermediate and end rolls with reliable long-term operation
- Textile and power tool machinery — operates efficiently under continuous-duty conditions
Compatibility & Replacements
Compatible With
- Electric motor housings and bearing blocks designed for 100mm bore standard housings
- Shaft diameters: 100 mm (h6, h7 tolerances)
- Bearing seats: 215 mm outer diameter standard pillow blocks and cartridge housings
- Industrial machinery requiring SKF 6300-series deep groove bearings
- Standard metric bearing arrangements in pumps, gearboxes, and drive systems
Replaces / Drop-In Replacement For
- SKF 6320/C3 (standard variant with C3 clearance)
- SKF 6320 M/C3 (brass/machined cage variant)
- FAG 6320 (equivalent deep groove bearing from sister company)
- NSK, Koyo, and other OEM-equivalent 6320-series deep groove bearings in industrial equipment
Works With
- Standard metric bearing mounting hardware (bolts, shims, keys)
- Industrial-grade bearing greases (NLGI Grade 2 to 3, ISO VG 32–68 oils)
- Condition monitoring systems and vibration analysis tools for predictive maintenance
- SKF roller bearing extraction and installation tools
- Most industrial bearing preload and thermal management systems
