Koyo KOYO6320-ZZC3 Deep Groove Ball Bearing

Product Description

The KOYO KOYO6320-ZZC3 is a single-row, deep groove ball bearing designed for general industrial and mechanical power transmission applications. The double-shield (ZZ) configuration keeps contaminants out and retains lubrication without requiring a separate seal housing. The C3 internal clearance designation provides a looser-than-standard radial play, making this bearing well suited for applications where operating temperatures cause thermal expansion or where shaft and housing fits demand greater internal clearance. Licensed mechanics, millwrights, and HVAC technicians routinely specify C3-clearance bearings in high-cycle rotating equipment.

Deep groove ball bearings in this size class are used across a broad range of rotating equipment including electric motors, fans, blowers, pumps, compressors, and conveyor drives. The single-row design handles both radial loads and moderate axial (thrust) loads in either direction. This bearing is appropriate for residential and light commercial HVAC equipment as well as general industrial machinery where a shielded, internally clear bearing is required by the equipment manufacturer or field conditions.

Key Features

• Double-shield (ZZ) design excludes dust and debris while retaining factory-applied grease
• C3 internal clearance provides greater-than-normal radial play for thermally loaded or interference-fit applications
• Single-row deep groove geometry supports combined radial and axial loads
• Conforms to JIS and ISO standard dimension plans for broad interchangeability
• Suitable for high-cycle rotating equipment including motors, fans, blowers, and pumps

Compatibility

Designed as an OEM-style replacement deep groove ball bearing for industrial rotating equipment requiring a double-shielded, C3-clearance single-row bearing in the 6320 dimensional series.

Installation Notes

Installation should be performed by a qualified mechanic or technician. Always de-energize and lock out the equipment before removing or installing any bearing. Press or drive force must be applied only to the bearing ring being press-fitted — never apply force through the rolling elements. Verify shaft and housing tolerances against the bearing seat requirements before installation to ensure the C3 clearance is preserved in service.

Technical Specifications

• Bearing Type: Single-Row Deep Groove Ball Bearing
• Shield Configuration: Double-Shielded (ZZ)
• Internal Clearance: C3 (Greater Than Normal)
• Dimensional Series: 6320 (JIS/ISO Standard)

Standard Information

• Brand: KOYO
• Manufacturer Part Number: KOYO6320-ZZC3