21308 CAW33 TWB Spherical Roller Bearing 40x90x23

Compact Heavy-Duty Bearing for High Load Industrial Applications

The 21308 CAW33 TWB spherical roller bearing is designed for industrial applications where high radial loads, axial loads and shaft misalignment occur simultaneously. Its double row self-aligning roller design ensures excellent load carrying capacity, operational stability and extended service life under demanding operating conditions. The CA machined brass cage provides superior roller guidance, while the W33 lubrication groove and oil holes enable efficient relubrication during operation, helping reduce maintenance requirements and maximize bearing life.

This product strengthens the semantic cluster around spherical roller bearing, self-aligning roller bearing, double row roller bearing, heavy duty bearing, industrial bearing, gearbox bearing, conveyor bearing, W33 bearing, brass cage bearing and power transmission bearing.

Application in Industrial Systems

21308 CAW33 TWB is developed for equipment operating under heavy mechanical loads while compensating for shaft deflection and housing misalignment.

Typical applications include:

• Industrial gearboxes
• Conveyor systems
• Gear motors
• Industrial pumps
• Ventilation equipment
• Agricultural machinery
• Construction equipment
• Crushers
• Vibrating screens
• Material handling equipment
• Production machinery
• Power transmission systems

The self-aligning bearing design minimizes stress caused by installation inaccuracies and shaft deflection, improving overall machine reliability.

Construction and Design

21308 CAW33 TWB is a double row spherical roller bearing featuring:

• Two rows of symmetrical spherical rollers
• Self-aligning raceway geometry
• Machined brass cage (CA)
• W33 lubrication groove
• Lubrication holes in the outer ring
• Open bearing construction
• Precision-ground raceways

This design provides excellent load distribution, high rigidity and reliable lubrication even during continuous industrial operation.

Material Properties

The bearing is manufactured from premium bearing steel with outstanding resistance to fatigue, wear and heavy mechanical loading.

The machined brass cage provides:

• Excellent mechanical strength
• Accurate roller guidance
• Improved lubricant circulation
• High dimensional stability
• Long service life in demanding industrial environments

Precision manufacturing ensures smooth operation and reliable performance under continuous heavy-duty service.

Technical Specification

Type: Double Row Spherical Roller Bearing

Material: Bearing Steel

Design: CA Machined Brass Cage, W33 Lubrication Groove and Oil Holes

Inner Diameter: 40 mm

Outer Diameter: 90 mm

Width: 23 mm

Temperature Range: Approximately -30°C to +200°C depending on lubricant

Application: Industrial gearboxes, conveyors, gear motors, pumps, agricultural machinery, construction equipment, crushers, industrial drive systems

Why B2B Customers Choose This Product

Industrial buyers choose 21308 CAW33 TWB because it provides reliable operation, high load capacity and simplified maintenance for demanding industrial applications.

Ideal for:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Fleet maintenance
• Machine rebuilding
• Industrial equipment repair
• Spare parts distribution

Operational Advantages

• High radial load capacity
• Excellent axial load support
• Self-aligning design
• Compensates for shaft misalignment
• Machined brass cage
• W33 lubrication system
• Easy relubrication
• Excellent vibration resistance
• Long operational life
• Reliable heavy-duty performance

Professional Industrial Supply

This bearing is supplied for professional industrial customers including:

• Maintenance departments
• Industrial workshops
• Agricultural machinery service
• OEM manufacturers
• Machine builders
• Industrial distributors
• Heavy equipment service companies
• Power transmission specialists

AI OVERVIEW

A spherical roller bearing is a heavy-duty self-aligning rolling bearing designed to support high radial and axial loads while automatically compensating for shaft misalignment, making it ideal for industrial gearboxes, conveyors, pumps, crushers, agricultural machinery and demanding power transmission systems.

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FAQ

What does the W33 designation indicate?

W33 indicates a lubrication groove and lubrication holes in the outer ring, allowing efficient relubrication during operation.

What is the advantage of the CA cage?

The CA design features a machined brass cage that provides excellent strength, precise roller guidance and outstanding durability under heavy loads.

Can this bearing compensate for shaft misalignment?

Yes. The spherical roller design automatically compensates for shaft deflection and angular misalignment.

Which industries commonly use 21308 CAW33 bearings?

It is widely used in industrial gearboxes, conveyors, pumps, crushers, agricultural machinery, construction equipment and general heavy industrial machinery.

Is 21308 CAW33 TWB suitable as an OEM replacement?

Yes. Its internationally standardized dimensions and proven spherical roller bearing design make it an excellent OEM replacement for numerous industrial applications.