Koyo KOYO6315-2RDC3 Deep Groove Ball Bearing C3

Product Description

The KOYO KOYO6315-2RDC3 is a deep groove ball bearing designed for rotating shaft and housing applications found in HVAC blower assemblies, pump motors, compressors, and general industrial equipment. This bearing features a 75mm bore, 160mm outer diameter, and 37mm width, placing it in the 6315 series of single-row deep groove bearings. It is fitted with low-torque light contact seals on both sides and carries a C3 internal clearance designation, making it suitable for applications with higher operating temperatures or press-fit installations where thermal expansion is a concern. Licensed technicians and equipment service professionals install this bearing class during motor and drivetrain rebuilds.

The C3 clearance rating provides greater than standard internal play between the balls and raceways, which reduces the risk of bearing preload buildup in elevated-temperature environments. The light contact rubber seals retain grease and exclude contaminants without generating significant drag, allowing this bearing to operate efficiently in motor-driven equipment. Typical applications include belt-drive blower motors, centrifugal pump shafts, fan assemblies, and industrial gearbox input shafts where moderate speeds and radial loads are present.

Key Features

• C3 internal clearance for thermally demanding or interference-fit installations
• Dual-sided light contact seals retain lubrication and resist contamination ingress
• Low-torque seal design minimizes frictional resistance during operation
• 75mm bore accommodates standard NEMA and IEC motor shaft sizes in this load class
• Single-row deep groove geometry handles combined radial and moderate axial loads

Compatibility

Designed as a direct OEM-style replacement for 6315-2RS C3 class deep groove ball bearings used in industrial motors, HVAC blower assemblies, and pump drive shafts requiring a 75mm bore and C3 clearance specification.

Installation Notes

Installation should be performed by a qualified technician. Always de-energize and lock out the equipment before removing the shaft assembly. Use a bearing press or appropriate driver tool to seat the bearing squarely against the housing shoulder — never strike the bearing directly with a hammer. Consult the equipment manufacturer's service documentation for housing fit tolerances before installation.

Technical Specifications

• Bearing Series: 6315
• Bore Diameter: 75mm
• Outer Diameter: 160mm
• Width: 37mm
• Internal Clearance: C3
• Seal Type: Light Contact Seal, Both Sides (2RD)
• Seal Torque: Low
• Bearing Type: Deep Groove Ball Bearing

Standard Information

• Brand: KOYO
• Manufacturer Part Number: KOYO6315-2RDC3