The Timken 240 Series is a wide cross-section, double-row, self-aligning spherical roller bearing — wider than the standard 230/231/232 profiles but narrower than the heavy-thrust 241 Series. Optimized for heavy continuous radial load with moderate axial thrust, the 240 is common on large vibrating screens, heavy conveyor pulleys, continuous casting machinery, rolling-mill backup rolls, centrifugal fans, and large gearbox input/output shafts where cross-sectional envelope can accommodate a heavy-duty bearing.

• Construction: Double-row self-aligning, wide section — compensates for shaft misalignment up to 1º while carrying heavy sustained radial load.
• Cage options: Both steel stamped window (“EJ” suffix) and brass machined finger (“EM” suffix) variants — EM standard on heavier sizes and shock-intensive service.
• Bore types: Both cylindrical (straight) and tapered (“K” suffix) bore variants.
• Relubrication: W33 feature (oil groove + three holes in the outer ring) standard on most variants.
• Clearance classes: C0, C2, C3, C4, and C5 available across the range — C3 or C4 for elevated-temperature and interference-fit mounts.
• Bore range: 75 mm – 480 mm (2.95 in – 18.90 in) — the broadest bore coverage of any heavy-section spherical roller series.
• Width range: 40 mm – 269 mm.
• Typical applications: Vibrating screens, heavy conveyor pulleys, centrifugal fans and blowers, rolling-mill backup rolls, continuous casting rollers, large gearbox shafts, crusher drives.

Why 240 vs. 241: The 240 has a narrower cross-section than the 241 — choose 240 for pure heavy radial duty where axial thrust is moderate; step up to 241 when combined radial plus sustained axial load or severe shock is present.