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Double Row Spherical Roller Bearing

Q: What makes a double row spherical roller bearing superior to a single row version?

The key difference is the load capacity. A double row roller bearing has two rows of rollers, which significantly increases its ability to handle very heavy radial and axial loads. While a single row spherical roller bearing is useful for applications with limited space and moderate loads, the double row design is the preferred choice for heavy-duty applications that experience high stress, vibration, and shock.

Q: How does the self-aligning feature benefit my machinery?

The self-aligning feature is crucial for preventing premature bearing failure. It allows the bearing to compensate for shaft misalignment, whether from manufacturing imperfections, mounting errors, or shaft deflection under load. Without this feature, misalignment would cause uneven stress on the bearing, leading to increased friction, heat, and a shorter service life. This makes self aligning bearings an incredibly valuable component for complex machinery.

Q: What bore types are available for double row bearings?

TFL provides both straight bore and tapered bore options. Tapered bores are often used with adapter sleeves for easier mounting and dismounting.

TFL’s double row spherical roller bearings are engineered to manage high mechanical stress, with enhanced bearing geometry and cage design. The twin-row structure ensures uniform load distribution, while the self-aligning feature allows for installation tolerance and shaft deflection.

Part Number

Bore Dia

Outer Dia

Width

Shoulder Dia Of Inner Ring

Shoulder/Recess Dia Of Outer Ring

Radial run-out

Bore Type

Seal Type

Cage Material

Radial Clearance

Weight

Price （US$）

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Ultimate Load Handling for Industrial Applications

Double row spherical roller bearings are the optimal solution for heavy-duty equipment operating under severe radial loads and misalignment conditions. With two symmetrical rows of barrel-shaped rollers, these bearings offer significantly higher load capacity than their single row counterparts. This makes them ideal for industries like mining, crushing, cement, and vibrating screen machinery, where continuous high loads and shock forces are the norm.

The robust inner and outer raceway geometry ensures uniform stress distribution across both roller rows. This helps prevent premature failure due to localized wear or fatigue. Furthermore, the design minimizes vibration, enhances stability, and maintains operational smoothness, even when machines are subjected to shaft bending, housing deflection, or improper mounting.

In applications such as wind turbines, crushers, and gearboxes, these bearings ensure consistent performance and long service life. TFL offers multiple configurations and size ranges to meet the specific requirements of each application.

Enhanced Alignment and Extended Life

One of the standout features of double row spherical roller bearings is their self-aligning capability, which allows the bearing to correct misalignment during installation and operation. This means it can tolerate shaft bending, housing deformation, and thermal expansion without causing excessive stress on the bearing.

TFL’s design incorporates advanced roller geometry and cage construction that reduce friction and prevent slippage between components. This results in lower operating temperatures, less wear, and extended grease life. These advantages are critical in continuous operation machinery such as steel mills, paper production lines, and conveyor systems, where reliability and low maintenance are crucial.

TFL bearings are manufactured using heat-treated, high-carbon chromium steel, which improves hardness and fatigue resistance. Combined with optimized internal clearance and tight dimensional tolerances, our products consistently deliver longer service life and superior operating stability, even in harsh industrial environments.

Wide Range of Sizes and Configurations

TFL provides a comprehensive catalog of double row spherical roller bearings, covering a broad range of bore sizes (from 25 mm to over 500 mm), outer diameters, and widths. We support both straight bore and tapered bore designs, which allows compatibility with adapter sleeves and direct shaft mounting.

Our products are available in different internal clearance levels (C2, C3, C4, C5), allowing customers to fine-tune performance based on speed, load, and temperature conditions. For high-speed applications, tighter clearance ensures smoother rotation, while for high-temperature environments, larger clearances prevent thermal expansion-induced seizure.

Whether you’re replacing existing parts or engineering new machines, TFL’s full spectrum of sizes and custom tolerances ensures you’ll find the right fit. We also provide technical support to assist with selection and installation.

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FREQUENTLY ASKED QUESTIONS

What makes a double row spherical roller bearing superior to a single row version?

The key difference is the load capacity. A double row roller bearing has two rows of rollers, which significantly increases its ability to handle very heavy radial and axial loads. While a single row spherical roller bearing is useful for applications with limited space and moderate loads, the double row design is the preferred choice for heavy-duty applications that experience high stress, vibration, and shock.

How does the self-aligning feature benefit my machinery?

The self-aligning feature is crucial for preventing premature bearing failure. It allows the bearing to compensate for shaft misalignment, whether from manufacturing imperfections, mounting errors, or shaft deflection under load. Without this feature, misalignment would cause uneven stress on the bearing, leading to increased friction, heat, and a shorter service life. This makes self aligning bearings an incredibly valuable component for complex machinery.

Do double row spherical roller bearings require frequent lubrication?

The lubrication frequency depends on the bearing's design and operating conditions. We offer sealed spherical roller bearings that are pre-lubricated for life and require no maintenance. For bearings that are not sealed, the required lubrication schedule is based on factors like speed, load, and temperature. Regular and proper lubrication is essential to ensure the bearing's longevity and prevent premature wear, especially in heavy-duty applications.

What bore types are available for double row bearings?

TFL provides both straight bore and tapered bore options. Tapered bores are often used with adapter sleeves for easier mounting and dismounting.