21307CC W33 Spherical Roller Bearing 35×80×21mm for Heavy Duty Industrial Machinery

The 21307CC W33 Spherical Roller Bearing is designed for heavy-duty industrial applications requiring high radial load capacity, self-aligning performance, and efficient lubrication. Featuring a double-row spherical roller structure, CC-type pressed steel cage, and W33 lubrication groove with oil holes on the outer ring, it ensures reliable operation under demanding working conditions.

It is widely used in mining machinery, industrial gearboxes, conveyor systems, vibrating screens, and other heavy-duty equipment where durability and stable performance are essential.

• Model: 21307CC W33

• Bearing Type: Spherical Roller Bearing

• Inner Diameter (ID): 35 mm

• Outer Diameter (OD): 80 mm

• Width: 21 mm

• Structure: Double Row Spherical Roller Bearing

• Cage Type: CC Pressed Steel Cage

• Material: Bearing Steel (GCr15)

• Lubrication Design: W33 Outer Ring Lubrication Groove with Three Lubrication Holes

• Load Direction: High Radial Load and Axial Load in Both Directions

• Alignment: Self-Aligning Design

• Clearance: Standard CN; C3 and other options available upon request

• Lubrication: Grease or Oil Lubrication

• High Load Capacity: Double-row spherical roller design provides excellent radial load-bearing capability.

• Self-Aligning Performance: Accommodates shaft deflection and angular misalignment between the shaft and housing.

• CC-Type Cage Design: Pressed steel cage helps guide the rollers and maintain stable internal operation.

• W33 Lubrication System: Outer ring lubrication groove and three lubrication holes facilitate grease distribution and relubrication.

• Excellent Durability: High-quality bearing steel and precision manufacturing improve wear resistance and operational reliability.

• Reduced Maintenance: Efficient lubrication and robust construction help extend bearing service life.

• OEM & Custom Support: Different clearance grades, cage configurations, and lubrication options are available upon request.

• 25+ years of experience in industrial bearing manufacturing

• Products exported to 50+ countries worldwide

• Rich experience in OEM and customized bearing projects

• Strict quality inspection before shipment

• Professional technical support and fast response within 24 hours

  

  

  

Q1: Is GQZ Bearing a bearing manufacturer?

GQZ Bearing specializes in industrial bearing manufacturing and provides OEM, customized, and wholesale bearing solutions for global customers.

Q2: What are the dimensions of a 21307CC W33 bearing?

The standard dimensions are 35 mm inner diameter, 80 mm outer diameter, and 21 mm width.

Q3: What does CC mean in a 21307CC bearing?

CC generally identifies a spherical roller bearing design with two pressed steel cages and a floating guide ring between the roller rows. The specific internal design should be confirmed against the manufacturer's catalog.

Q4: What does W33 mean in a spherical roller bearing?

W33 indicates an outer ring with a lubrication groove and three lubrication holes, allowing grease or oil to be supplied more conveniently to the bearing.

Q5: What is the delivery time for 21307CC W33 bearings?

Standard models generally require 7–15 days, depending on stock availability and order quantity. International shipping time depends on the destination and shipping method.