XL Group Manufacturers

Spherical Roller Bearing

A spherical roller bearing has two rows of rollers, a common spherical outer ring raceway, and two inner ring raceways at an angle to the bearing axis. The center point of the sphere in the outer ring raceway is on the bearing axis. Therefore, spherical roller bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which may be caused, for example, by shaft deflection.

Types

Types of Spherical Roller Bearings

Spherical roller bearings are designed to withstand heavy radial loads as well as heavy axial loads in both directions. Spherical roller bearings can be divided into the following types according to design and characteristics: sealed spherical roller bearings, CA type spherical roller bearings, E type spherical roller bearings, CC type spherical roller bearings, MB type spherical roller bearings, MA type spherical roller bearings.

Spherical Roller Bearing

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Each Types

Features

A spherical roller bearing is a self-aligning bearing and consequently insensitive to errors of alignment of the shaft relative to the housing, and to the deflection of the shaft. It automatically compensates for the angular errors caused by shaft flexing and misalignments. In addition to radial load, the bearing can also carry bidirectional axial loads and combined loads, featuring a large bearing capacity, and good vibration and impact resistance.

CC Type

It consists of two pressed steel cages, a ribless inner ring, and a guide ring centered on the inner ring. With symmetrical spherical rollers, the bearing capacity is higher than that of CA, and the service life is longer.

CA Type

It consists of a one-piece machined brass cage, an inner ring with a flange on both sides, and a guide ring centered on the inner ring. It features a higher limit speed and a relatively low noise.

MB Type

It consists of a two-piece machined brass cage, an inner ring with flanges on both sides, and a guide ring centered on the inner ring. Its performance is similar to CA, but the load rating is lower.

E Type

The latest design features symmetrical spherical rollers, two extruded steel cages, a ribless inner ring, and a cage-centered guide ring. The outer ring guide ring improves the lubrication conditions of the face rollers by reducing friction.

Application of Spherical Roller Bearing

Industry Gearboxes

The gearbox bearing design is typically driven by shaft speed. Low-speed shafts usually use fixed profile journal bearings, often with simple cylindrical bores.

Wind Energy

We design and develop bearings, seals, condition monitoring systems, and lubrication systems that can enable more cost-effective wind energy generation and lower lubricant consumption.

Paper Industry

From the debarking drums to the reeler at the end of a paper machine, the pulp and paper industry relies on process-critical machinery, often operating in demanding conditions that can shorten the service life of bearings.

Mining Industry

Bearings are part of mining and cement machines. The harsh working environment of mining and cement machinery requires bearings to work continuously under high load and dusty conditions. Our bearings suits for mining crushing and screening machine, mineral ore processing machine, and cement making machines.

Construction Machinery

All types of machinery, from wheel loaders to road rollers, must continue to work effectively under harsh operating conditions.We can supply a broad range of bearings and seals, with enhanced features to protect against excessive wear. In addition, our expertise in lubrication can help extend bearing service life and maintenance intervals.

About

How do Spherical Roller Bearings Work?

All high speed precision spherical roller bearings have the same working principle. They all have outer rings with concave (spherical) inner raceways. The inner rings similarly have convex outer raceways (or rolling elements that create a matching convex sliding surface). The design of their sliding surface separates the various types of spherical bearings. Some are ring-to-ring (such as spherical plain bearings and rod ends), and others use rolling elements, such as balls or rollers between the inner and outer rings.

How

How to Install the Spherical Roller Bearing?

Cleaning the Bearings and Related Spherical Roller Bearing Parts

Bearings should not be unpacked until immediately before mounting. When using ordinary grease lubrication, the grease should be packed in the bearings without first cleaning them. Even in the case of ordinary oil lubrication, cleaning the bearings is not required. However, bearings for instruments or for high speed operation must first be cleaned with clean filtered oil in order to remove the anti-corrosion agent.

Bearing Mounting Methods

After the bearings are cleaned with filtered oil, they should be protected to prevent corrosion. Prelubricated bearings must be used without cleaning. Bearing mounting methods depend on the bearing type and type of fit. As bearings are usually used on rotating shafts, the inner rings require a tight fit. Bearings with cylindrical bores are usually mounted by pressing them on the shafts (press fit) or heating them to expand their diameter (shrink fit). Bearings with tapered bores can be mounted directly on tapered shafts or cylindrical shafts using tapered sleeves.

Inspection After Mounting

After the mounting has been completed, a running test should be conducted to determine if the bearing has been mounted correctly. Small machines may be manually operated to assure that they rotate smoothly. Items to be checked include sticking due to foreign matter or visible flaws, uneven torque caused by improper mounting or an improper mounting surface, and excessive torque caused by an inadequate clearance, mounting error, or seal friction. If there are no abnormalities, powered operation may be started.

Advantages and Disadvantages of Spherical Roller Bearings

Spherical roller bearings are used in various applications, including mechanical fans, conveyors, mining equipment, off-road vehicles, and wind turbines. They reduce vibration and friction, making machines more durable and efficient. In addition, they can withstand heavy loads and misalignment.
Spherical roller bearings are manufactured in several different ways. Some are made by grinding the machine and then cleaning the bearing with an abrasive material. Others are divisive. Split variants are especially useful in hard-to-access areas.
Spherical roller bearings are available in single row and double row versions. The single-row version is suitable for low radial loads. Double row spherical roller bearing designs are more expensive, but have greater carrying capacity.
On the other hand, ball bearings consist of a row of balls. They are fixed between the cage and the outer ring. Each sphere of the ball is about the size of a golf ball.

Design

Spherical Roller Bearing Design

Bearing

Material

These Bearings are manufactured with several kinds of material based on the spherical roller bearing application and working environment. Chrome steel is one of the most popular materials used in producing these Bearings because of its durability, yet sheet steel, polyamide, and brass are also used for some applications. One of the essential parts of Spherical Bearings is the cage that holds bearings in their place. That cage is usually manufactured with pressed steel or brass because both materials offer strength and temperature resistance.

Bearing

Lubrication

Lubrication is absolutely essential to the proper operation of the spherical roller bearing. A proper lubricant will reduce friction between the internal sliding surfaces of the bearings components and reduce or prevent metal-to-metal contact of the rolling elements with their raceways. Proper lubrication reduces wear and prevents corrosion, ensuring long service lives for bearings. Lubrication, especially circulating oil will also remove heat from the bearing. There are two basic types of bearing lubricants readily available: Oil and Grease.

What Our Customers are Saying

★★★★★

"Quite satisfied, Compared with other companies the quality is not lost at all, and it is much cheaper. The logistics is good, the seller is very good, and the purchase is very pleasant."

★★★★★

"Fast delivery, good service attitude! The effect is very good. The quality of the small spherical roller bearing is very good and, as expected, it has a high load carrying capacity and performs well in harsh environments."

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