Spherical Roller Bearings for Quarry Crushers and Stone Processing Equipment

Is your quarry crusher constantly breaking down due to bearing failures? Unplanned downtime costs you money and delays deliveries. Choosing the right spherical roller bearings can keep your machines running smoothly.

Spherical roller bearings are designed to handle heavy loads and misalignment, making them essential for quarry crushers and stone processing equipment. They offer high durability and reliability in harsh conditions.

You might think all bearings are similar, but in demanding applications like crushers, the details matter. Let’s look at some specific bearing types and their roles in your equipment.

What is a Spherical Roller Bearing 22222 E¹?

When your crusher starts vibrating and making unusual noise, a worn-out bearing is often the cause. The 22222 E model is a common replacement part. Understanding its features helps you make the right choice.

The 22222 E is a spherical roller bearing with a 110mm bore, a 200mm outer diameter, and a 53mm width. It is designed for high radial and axial loads and features symmetrical rollers and a pressed steel cage², which makes it ideal for heavy machinery like crushers.

Understanding the 22222 E Bearing Design

The 22222 E belongs to the 222 series of spherical roller bearings. The number "22" indicates the series, which is a standard light series. The "222" stands for spherical roller bearing type, and "22" in the middle is the width or diameter series code. The last two digits "22" refer to the bore size, which is 110mm (multiply 22 by 5).

The "E" suffix is very important. It means the bearing has an optimized internal design. This usually includes more rollers or larger rollers compared to the standard version. As a result, the "E" type can carry higher loads. It also has improved geometry for better stress distribution.

Key Features of the 22222 E Bearing:

• Self-aligning capability: The outer ring has a spherical raceway, which allows the inner ring and rollers to tilt slightly. This compensates for shaft deflection or housing misalignment.
• High load capacity: It handles heavy radial loads and moderate axial loads in both directions.
• Symmetrical rollers: These provide even load distribution and reduce friction.
• Robust cage: Usually made of pressed steel, it guides the rollers precisely and allows for high-speed operation.

Typical Applications in Quarry Equipment:

In a crusher plant, the 22222 E is often used in:

Machine Type	Typical Location	Reason for Use
Jaw Crusher	Eccentric shaft bearings	Handles high impact loads and shaft deflection
Cone Crusher	Main shaft support	Accommodates heavy radial and axial forces
Vibrating Screen	Screen box bearings	Withstands vibration and misalignment

From my experience at FYTZ Bearing, customers like Rajesh from India often order the 22222 E for their jaw crusher repairs. They need a reliable bearing that can survive the harsh conditions of stone crushing. We supply these bearings with P6 precision class to ensure a perfect fit and long life.

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What is a 6203 bearing¹ used for?

You might wonder why a small bearing like 6203 appears in a discussion about crushers. Actually, it plays a supporting role in many machines within the plant. Ignoring these small parts can also lead to problems.

A 6203 bearing is a deep groove ball bearing² with a 17mm bore, a 40mm outer diameter, and a 12mm width. It is used for light to moderate loads in applications like conveyor rollers³, fans, and small electric motors in stone processing plants.

The Role of 6203 Bearings in Stone Processing

The 6203 bearing is part of the 6000 series deep groove ball bearings. These are the most common type of rolling bearings. They are simple, versatile, and can handle both radial and axial loads, although their load capacity is much lower than spherical roller bearings⁴.

In a quarry or stone processing plant, you can find 6203 bearings in:

• Conveyor belt rollers: Many small conveyor rollers use 6203 bearings to support the belt and material. They allow the rollers to spin freely with low friction.
• Electric motors: Small motors that drive fans, pumps, or even some conveyors often use 6203 bearings on their shafts.
• Vibrating feeder motors: Some smaller vibratory feeders use deep groove ball bearings, but for larger ones, spherical bearings are preferred.
• Pumps: Water pumps or lubrication pumps in the plant may use 6203 bearings.

Why not use a 6203 in the main crusher?

The 6203 bearing is simply not strong enough for the main crusher shaft. Crushers generate enormous impact forces and heavy loads. The small balls in a 6203 would crack or deform quickly. Also, deep groove ball bearings have very limited self-aligning ability. Shaft deflection in a crusher would destroy them.

Comparison: 6203 vs. Spherical Roller Bearing

Feature	6203 (Deep Groove)	Spherical Roller Bearing
Load Capacity	Light to moderate	Very high
Self-alignment	None	Excellent
Speed Capability	High	Moderate
Typical Use	Conveyor rollers, motors	Crusher main shafts, screens

At our factory, we produce both deep groove ball bearings and spherical roller bearings. Many of our clients, like bearing distributors in Indonesia, order 6203 bearings along with larger spherical bearings. They need a complete inventory for all their customers’ maintenance needs. I always advise them to stock both types.

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What is spherical roller bearing 22220 e?

Another common question from our clients is about the 22220 E bearing. This model is also widely used in quarry equipment, and it’s often confused with the 22222 E. Let’s explore its specifics to avoid mistakes.

The 22220 E is a spherical roller bearing with a 100mm bore, a 180mm outer diameter, and a 46mm width. The "E" denotes an optimized internal design¹ for higher load capacity. It is frequently found in smaller crushers and vibrating screens².

Diving Deeper into the 22220 E Bearing

The 22220 E shares the same design principles as the 22222 E, but with different dimensions. The bore size is 100mm (20 x 5), so it is smaller. This bearing is also a light series spherical roller bearing, meaning it has a relatively high load capacity for its size, but is more compact.

Why the "E" Design Matters:

The "E" internal design is a significant upgrade. In standard spherical roller bearings, the rollers are usually symmetrical, but the internal geometry might be older. The "E" version typically includes:

• Optimized roller profile: This reduces edge stresses and improves fatigue life.
• More rollers or larger rollers: Increases the load rating.
• Improved cage design: Allows for better lubrication flow and higher speed limits.

For quarry applications, the "E" design means the bearing can handle more impact and survive longer between maintenance intervals.

Comparing 22220 E and 22222 E:

It’s easy to mix up these two numbers. Here’s a table to clarify:

Parameter	22220 E	22222 E
Bore Diameter (d)	100 mm	110 mm
Outer Diameter (D)	180 mm	200 mm
Width (B)	46 mm	53 mm
Dynamic Load Rating (approx.)	Higher than standard	Even higher due to size
Common Application	Smaller jaw crushers, screens	Larger jaw crushers, main shafts

When to Choose 22220 E:

If you have a smaller crusher or a secondary crusher with a shaft diameter of 100mm, the 22220 E is likely the right fit. It is also common in vibrating screens where the bearing housing is sized for this outer diameter.

In our work with clients in Brazil and Turkey, we see the 22220 E used in many medium-sized crushing plants. One time, a maintenance manager from Egypt called us because he mistakenly ordered 22222 E for his 100mm shaft. We quickly corrected the order and explained the difference. That’s why knowing the exact dimensions is crucial.

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Which bearing is used in crusher plant?

This is a common question from plant managers. But the answer is not simple, because different machines need different bearings. Let’s break it down by equipment type so you can understand what to look for.

In a crusher plant, spherical roller bearings¹ are mainly used in the crusher itself for the main shaft and eccentric locations. Additionally, deep groove ball bearings² and cylindrical roller bearings³ are used in conveyors, motors, and screens. The exact type depends on the machine design and load conditions.

A Complete Guide to Crusher Plant Bearings

A typical stone crushing plant includes several types of machinery. Each machine has specific bearing requirements. Let’s go through the main ones.

1. Jaw Crusher Bearings

Jaw crushers have a stationary jaw and a moving jaw (pitman). The eccentric shaft that moves the pitman is supported by bearings on both ends. These bearings experience extreme shock loads every time the crusher breaks a rock.

• Typical bearing type: Spherical roller bearings.
• Common series: 222, 223, 230, 231, 232 (depending on size).
• Why: Spherical bearings can handle the heavy radial loads and the axial loads that occur during crushing. Their self-aligning feature compensates for shaft bending.
• Example models: 22220 E, 22222 E, 22324, etc.

2. Cone Crusher Bearings

Cone crushers have a rotating mantle that gyrates inside a fixed bowl. The main shaft is supported by bearings at the top and bottom. These bearings must handle both radial and axial forces.

• Typical bearing type: Spherical roller bearings and sometimes tapered roller bearings or cylindrical roller bearings for specific positions.
• Common series: 222, 223, 230.
• Why: Spherical bearings accommodate the oscillating motion and heavy loads. Some cone crushers use a combination of thrust bearings and radial bearings.

3. Impact Crusher Bearings

Impact crushers use high-speed rotors to throw rocks against impact plates. The rotor is supported by bearings that must withstand high speeds and moderate loads.

• Typical bearing type: Cylindrical roller bearings or spherical roller bearings.
• Common series: NU series cylindrical bearings, or 222 series spherical.
• Why: Cylindrical bearings allow for thermal expansion of the rotor shaft and handle high speeds. Spherical bearings are used if misalignment is expected.

4. Vibrating Screen Bearings

Vibrating screens use unbalanced motors or eccentric shafts to create vibration. The bearings in a screen experience rapid oscillation and high acceleration.

• Typical bearing type: Spherical roller bearings.
• Common series: 222, 223 (often with special clearances).
• Why: Spherical bearings can handle the vibration and misalignment. They also have special internal clearances (C4) to allow for thermal expansion.

5. Conveyor Bearings

Conveyors move material from one point to another. The idler rollers use simple bearings.

• Typical bearing type: Deep groove ball bearings (often 6200 series) or mounted units (pillow block bearings).
• Common models: 6203, 6204, 6305, etc.
• Why: These bearings are cheap, easy to replace, and suitable for the moderate loads of a conveyor.

6. Electric Motor Bearings

Motors drive crushers, screens, and conveyors. Motor bearings must handle high speeds and moderate loads.

• Typical bearing type: Deep groove ball bearings or cylindrical roller bearings (on the drive end of large motors).
• Common models: 6200, 6300 series for small motors; NU series for larger motors.
• Why: Deep groove ball bearings are ideal for high speeds. Cylindrical bearings allow axial movement due to thermal expansion.

Summary Table of Crusher Plant Bearings:

Equipment	Bearing Type	Common Series/Models	Key Requirement
Jaw Crusher	Spherical Roller	222, 223	High shock load, misalignment
Cone Crusher	Spherical Roller	222, 223, 230	High radial/axial load
Impact Crusher	Cylindrical / Spherical	NU, 222	High speed, thermal expansion
Vibrating Screen	Spherical Roller	222 (C4 clearance)	Vibration, misalignment
Conveyor	Deep Groove	6203, 6204, 6305	Low friction, easy replacement
Electric Motor	Deep Groove / Cylindrical	6200, 6300, NU	High speed, reliability

At FYTZ Bearing, we often work with plant managers to supply all these bearings from a single source. For example, a client in Pakistan needed bearings for a complete crushing line. We provided spherical bearings for the crushers and screens, plus deep groove bearings for the conveyors and motors. This simplified his procurement and ensured compatibility.

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Conclusion

Choosing the right bearings for your quarry crusher and stone processing equipment is vital for reducing downtime and increasing productivity. Understanding models like 22222 E and 22220 E, and knowing where each bearing type fits, helps you make smarter maintenance decisions.