Axial Spherical Roller Bearing

What Is an Axial Spherical Roller Bearing?

An axial spherical roller bearing is a heavy-duty thrust bearing built with barrel-shaped rollers running on a curved, sphere-shaped raceway inside the housing washer. This curved shape lets the whole bearing tilt slightly around its own centre, which means it can keep working smoothly even if the shaft and housing are not perfectly lined up with each other.

Because the rollers are large and barrel-shaped, this bearing can carry very high axial load, often much higher than a standard cylindrical roller thrust bearing of a similar size. It can also take a moderate amount of side load at the same time, which is unusual for a bearing built mainly for thrust duty.

These features make the axial spherical roller bearing a common choice in large, heavy machines where perfect shaft alignment is difficult to guarantee, such as tall vertical gear reducers, large fans, and marine propulsion systems.

Axial Spherical Roller Bearing vs Axial Cylindrical Roller Bearing: What Is the Difference?

An axial cylindrical roller bearing uses straight rollers on a flat raceway, giving strong thrust support but almost no tolerance for shaft misalignment, and very little side load capacity. An axial spherical roller bearing uses a curved raceway that allows the bearing to self-align and also accept some side load along with heavy thrust. Where a machine is rigid and well-aligned, the cylindrical roller type is simpler and more cost-effective; where alignment is harder to control or side load is present, the spherical roller type is the safer and longer-lasting option.

Types of Axial Spherical Roller Bearings

• Cylindrical Bore Type: This standard version mounts directly on a plain cylindrical shaft and is the most common choice for general heavy-duty gearbox and pump applications.
• Tapered Bore Type (Sleeve Fit): Fitted using an adapter or withdrawal sleeve, this version allows quick mounting and removal on shafts without a shoulder, useful for large equipment.
• Machined Brass Cage Design: A solid brass cage guides the rollers precisely at higher speed and heavier load, chosen for demanding, continuous-duty machinery.
• Pressed Steel Cage Design: A lighter, more economical cage option suited to moderate speed and load, commonly used in general industrial gear drives.

Axial Spherical Roller Bearing: Part Numbers, Sizes & Applications

The table below shows common series of axial spherical roller bearings, their general size range, and typical heavy industrial use. Share your shaft size, load, and alignment concerns with our technical team for an exact recommendation.

Benefits of Choosing the Right Axial Spherical Roller Bearing

• Self-Aligning Under Load: The curved raceway lets the bearing cope with shaft or housing misalignment automatically.
• Very High Thrust Capacity: Barrel-shaped rollers carry heavier axial load than most other thrust bearing types.
• Accepts Some Side Load: Unlike most thrust bearings, it can handle a moderate amount of radial load as well.
• Fewer Alignment-Related Failures: Reduces the risk of early bearing damage caused by foundation settling or installation error.
• Available in Multiple Mounting Styles: Cylindrical and tapered bore options suit different shaft and maintenance needs.
• Built for Long, Heavy Duty: Designed to keep running reliably in large, continuously loaded industrial machines.

Country-Wise Use of Axial Spherical Roller Bearings in Our Export Network

Large, heavy machinery in each of our export markets calls on the self-aligning strength of axial spherical roller bearings in different ways. Here is a short country-by-country look:

How to Select the Right Axial Spherical Roller Bearing

• Check Alignment Conditions: If perfect shaft alignment is hard to guarantee, this bearing type is usually the safer choice.
• Calculate Combined Load: Confirm both the axial and any expected side load before finalising bearing size.
• Choose Bore and Mounting Style: Decide between a plain cylindrical bore or a tapered bore with sleeve fitting.
• Consider Cage Material: A brass cage suits higher speed and heavier duty, while a steel cage suits standard use.

Common Mistakes to Avoid When Choosing an Axial Spherical Roller Bearing

• Ignoring the Actual Alignment Risk: Choosing a rigid cylindrical roller bearing where real misalignment exists shortens bearing life fast.
• Overlooking Side Load Limits: Even though it accepts some radial load, exceeding its rated limit still causes early failure.
• Poor Sleeve Fitting on Tapered Bore Types: Incorrect sleeve tightening can distort the bearing bore and damage the rollers.
• Under-Greasing a Heavy-Duty Unit: Large, heavily loaded bearings need a stricter lubrication schedule than smaller thrust types.

Simple Maintenance Tips for Longer Life

Listen for a deep rumbling sound under load, which often signals roller or raceway wear developing inside the bearing. Check housing temperature at regular intervals, since a steady rise can point to insufficient grease or early misalignment beyond the bearing's self-aligning limit. Inspect the sleeve and locknut tightness on tapered bore types during scheduled maintenance, as a loose fit can let the bearing shift and wear unevenly.

Request a fast export quote for axial spherical roller bearings from Shree Balaji Export — trusted delivery to Sri Lanka, South Africa, UAE, Nigeria, Egypt, Indonesia, Thailand, Kuwait and worldwide.