Timken 22208 EM W33 C3 - Spherical Roller Bearing 40x80x23

Applications & Load Handling | Design Features & Lubrication | Technical Specifications & Installation Tips

The Timken 22208 EM W33 C3 is a spherical roller bearing engineered for heavy industrial applications, combining robust load capacity with self-aligning capabilities. With dimensions 40 mm (inner diameter) x 80 mm (outer diameter) x 23 mm (width), it is designed for demanding operating conditions.

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This description incorporates these key phrases (such as “Timken 22208 EM W33 C3”, “spherical roller bearing 40x80x23”, “bearing W33 groove”) and relevant synonyms (roller bearing, self-aligning bearing) to boost search relevance.

Applications & Load Handling

This bearing is ideally suited for:

• Heavy machinery and industrial equipment subject to high radial loads

• Applications where shaft misalignment or deflection may occur — thanks to its self-aligning spherical raceway

• Rolling mills, conveyors, pumps, gearboxes, and other systems with rigorous load demands

• Environments requiring periodic relubrication — the W33 groove and holes in the outer ring facilitate internal grease distribution

• Use cases where moderate axial loads are expected in either direction

The C3 internal clearance (greater than normal) allows for thermal expansion and safe operation under elevated temperatures or speeds.

Design Features & Lubrication

Key design aspects include:

1. W33 lubrication feature: groove and lubrication holes in the outer ring enable efficient grease distribution without removing the bearing

2. EM brass cage: one-piece machined brass cage ensures stability, reduced friction, and precise roller guidance

3. Open design: the bearing is open (without seals), making it suitable for clean or protected environments

4. Robust load ratings: For the 22208 EM W33 C3, the dynamic radial load rating is approx. 93,400 N and static radial load rating ~99,600 N.

5. Speed capabilities: Reference thermal speed ~6100 rpm (grease), up to ~7600 rpm in oil. 

Technical Specifications & Installation Tips

Installation & use recommendations:

• Ensure shafts and housings are clean, straight, and properly dimensioned

• Apply grease before assembly and use lubrication through W33 holes periodically

• Avoid misalignment beyond design limits; one of the strengths is self-alignment, but excessive angles reduce life

• Monitor temperature, vibration, and lubricant conditions during operation

• Allow clearance for thermal expansion given the C3 internal play

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This listing is branded differently from local versions on simmering.pl to avoid internal cannibalization while targeting international B2B audiences.

FAQ (Frequently Asked Questions)

Q: What does W33 signify?
A: W33 indicates that a lubrication groove and holes are built into the outer ring, enabling periodic greasing without disassembly.

Q: Why choose internal clearance C3?
A: C3 is larger than normal clearance—this helps accommodate thermal expansion and ensures adequate lubricant flow under high temperature or speed.

Q: Is this bearing sealed?
A: No — the Timken 22208 EM W33 C3 is an open type (no seals), intended for use in controlled or clean environments.

Q: What loads can it take?
A: This model is rated for high radial loads (94 kN dynamic) and can handle some axial loads, thanks to its two-row spherical geometry.

Q: Can it compensate for shaft misalignment?
A: Yes — spherical roller bearings are designed to tolerate slight misalignment between shaft and housing without excessive stress.