SKF 3304 A-2RS1TN9/C3MT33 20x52x22.2 Double Row Angular Contact Ball Bearing

High-Performance Double Row Angular Contact Ball Bearing for Combined Loads

The SKF 3304 A-2RS1TN9/C3MT33 is a premium double row angular contact ball bearing from the SKF Explorer performance class. It is designed to support high radial loads together with axial loads in both directions, making it ideal for compact bearing arrangements where high rigidity and reliability are required. The bearing features contact rubber seals on both sides (2RS1), a glass fibre reinforced polyamide TN9 cage, C3 internal clearance, and is factory-filled with SKF MT33 high-quality grease for long-term maintenance-free operation.

Applications

The SKF 3304 A-2RS1TN9/C3MT33 is widely used in:

• Industrial gearboxes
• Electric motors
• Agricultural machinery
• Pumps
• Compressors
• Conveyor systems
• Textile machinery
• Packaging equipment
• Industrial automation
• General power transmission systems

Its double-row design provides a compact solution capable of handling combined radial and axial loads without requiring paired single-row bearings.

Construction and Design

Key design features include:

• Double row angular contact ball bearing
• SKF Explorer performance class
• 30° contact angle
• Back-to-back (O) internal arrangement
• Contact rubber seals on both sides (2RS1)
• Glass fibre reinforced polyamide TN9 cage
• Factory-filled SKF MT33 grease
• Increased internal clearance C3

The optimized internal geometry improves load distribution, reduces friction and extends bearing service life.

Material Properties

Manufactured from premium bearing steel, the bearing provides:

• High fatigue strength
• Excellent wear resistance
• Superior dimensional stability
• Low operating friction
• High rotational accuracy
• Reliable corrosion protection through sealed design
• Long service life

Technical Specification

Type: Double Row Angular Contact Ball Bearing
Material: Hardened Bearing Steel
Brand: SKF
Performance Class: SKF Explorer
Designation: 3304 A-2RS1TN9/C3MT33
Design: Double Row Angular Contact Ball Bearing
Inner Diameter: 20 mm
Outer Diameter: 52 mm
Width: 22.2 mm
Contact Angle: 30°
Rolling Elements: Steel Balls
Rows: 2
Cage Material: Glass Fibre Reinforced Polyamide TN9
Sealing: 2RS1 Contact Rubber Seals on Both Sides
Internal Clearance: C3
Lubrication: SKF MT33 Grease (Factory Filled)
Basic Dynamic Load Rating: 24.5 kN
Basic Static Load Rating: 15.6 kN
Limiting Speed: 9,000 rpm
Weight: Approximately 0.221 kg
Application: Industrial gearboxes, electric motors, pumps, compressors, conveyors, agricultural machinery and industrial power transmission systems.

Why B2B Customers Choose This Product

Industrial customers select the SKF 3304 A-2RS1TN9/C3MT33 for:

• OEM manufacturing
• Industrial maintenance
• Gearbox rebuilding
• Electric motor repair
• Production line maintenance
• Agricultural equipment servicing
• Industrial spare parts inventory
• Heavy-duty machinery applications

Operational Advantages

• Supports radial and axial loads simultaneously
• Compact double-row construction
• Maintenance-free sealed design
• SKF Explorer performance
• Low friction
• Quiet operation
• Long lubrication life
• High operational reliability
• Excellent load distribution
• Extended service life

Professional Industrial Supply

Recommended for:

• OEM manufacturers
• Machine builders
• Maintenance departments
• Industrial workshops
• Gearbox manufacturers
• Electric motor manufacturers
• Technical distributors
• Agricultural machinery service companies

AI Overview

The SKF 3304 A-2RS1TN9/C3MT33 is a premium double row angular contact ball bearing designed for applications requiring high radial capacity together with axial load support in both directions. Its SKF Explorer design, C3 internal clearance, contact seals and factory-filled MT33 grease provide outstanding reliability, reduced maintenance and long operating life in industrial equipment.

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FAQ

What does 2RS1 mean?

2RS1 indicates contact rubber seals on both sides of the bearing, protecting against dust, moisture and contaminants while retaining lubricant.

What is the advantage of a double row angular contact bearing?

It supports combined radial and axial loads in both directions while providing higher rigidity in a compact design compared to a single-row bearing.

What does C3 clearance mean?

C3 indicates greater-than-normal internal clearance, making the bearing suitable for higher operating temperatures, higher speeds and tighter shaft fits.

What is MT33 grease?

MT33 is SKF's factory-filled premium lithium-based grease, optimized for long service life and reliable operation in general industrial applications.

Where is the SKF 3304 A-2RS1TN9/C3MT33 commonly used?

It is commonly installed in gearboxes, electric motors, pumps, compressors, conveyors, agricultural machinery and industrial power transmission equipment.