Koyo KOYO6206-ZZC3 Deep Groove Ball Bearing 30mm

Product Description

The KOYO KOYO6206-ZZC3 is a single-row, deep groove radial ball bearing designed for applications requiring reliable rotational support under both radial and moderate axial loads. Built to the 62 series standard, it features a 30 mm bore (inner diameter) and dual metal shields (ZZ designation) that retain grease and block moderate contamination from reaching the rolling elements. The C3 internal clearance designation indicates a looser-than-standard fit, making this bearing well-suited for applications where thermal expansion or shaft interference may be a factor. Licensed HVAC, mechanical, and industrial service technicians regularly specify this bearing as a direct replacement in motor and blower assemblies.

This bearing is commonly installed in fractional and integral horsepower electric motors, blower wheel shafts, pump assemblies, and fan drive assemblies found in commercial and residential HVAC equipment, pool pump motors, and light industrial machinery. The shielded configuration makes it appropriate for environments where dust, debris, or moderate moisture is present during operation, eliminating the need for frequent relubrication in most service intervals.

Key Features

• 30 mm bore (I.D.) conforms to 62 series dimensional standards for broad cross-reference compatibility
• Dual metal shields (ZZ) protect rolling elements from contamination and retain factory grease fill
• C3 internal clearance provides extra radial play, reducing risk of binding under elevated operating temperatures or press-fit mounting
• Deep groove raceway geometry supports radial loads and moderate bidirectional axial loads
• Single-row construction suits high-speed motor and blower shaft applications

Compatibility

Designed as an OEM-style replacement bearing for electric motors, blower assemblies, and pump shafts requiring a 62 series deep groove ball bearing with a 30 mm bore, dual metal shields, and C3 internal clearance.

Installation Notes

Bearing installation should be performed by a qualified technician using proper bearing press tooling or a bearing driver kit — never strike the bearing directly with a hammer, as this can damage the shields and raceway. De-energize and lock out all power to the motor or assembly before beginning work, following NFPA 70E lockout/tagout procedures. Press force should be applied only to the bearing ring being seated against the mating surface; applying force through the rolling elements will cause premature failure. Inspect the shaft and housing bore for scoring or out-of-round conditions before installation.

Technical Specifications

• Series: 62
• Bore (I.D.): 30 mm
• Row Configuration: Single Row
• Bearing Type: Deep Groove Radial Ball Bearing
• Shield Type: Dual Metal Shields (ZZ)
• Internal Clearance: C3 (greater than standard)
• Lubrication: Grease (factory filled, shielded)

Standard Information

• Brand: KOYO
• Manufacturer Part Number: KOYO6206-ZZC3