TSF Single Row Tapered Roller Bearings with Flange (Imperial)

What Are TSF (Single Row Tapered Roller Bearings with Flange) (Imperial)?

TSF (Single Row Tapered Roller Bearings with Flange) (Imperial) consist of a tapered inner ring assembly and a flanged outer ring. The flange enables precise alignment in through-bored housings, minimizing machining complexity. These bearings are capable of handling both radial and axial loads simultaneously, even under extreme operating conditions, while ensuring smooth, low-friction performance.

Design Characteristics

TSF bearings are built to support combined loads with minimal friction. The raceways of the inner and outer rings are designed so their projections meet at a common point on the bearing axis, facilitating true rolling contact and reducing torque. As the contact angle increases (typically between 10° and 30°), the axial load capacity also increases. The coefficient ‘e’ directly correlates with this contact angle.

Material Options

• Chrome Steel: Offers high load capacity and low noise, ideal for most general-purpose applications.
• 440C Stainless Steel: Recommended for applications needing corrosion resistance, combined with high load and speed tolerance.

Precision Grades (ABEC)

Available in ABEC-1 to ABEC-5. For standard applications, ABEC-3 is common. For high-precision needs requiring minimal noise, low runout, and extended service life, ABEC-5 is ideal.

Size Range

Bore diameters range from 7.937 mm to 1270.000 mm, covering a wide spectrum of use cases.

Sealing Types

• Open Type: Most common and readily available.
• Rubber Sealed: For environments with high dust or moisture.
• Metal Shielded: Offers basic protection and is customizable based on specific needs.

Key Features & Advantages

1. Low Friction & Noise Reduction

Optimized roller and flange designs promote lubricant film formation, reducing wear and operational noise while maintaining preload stability.

2. Long Service Life

Logarithmic raceway profiles ensure better load distribution and reduce stress concentrations, enhancing bearing life and misalignment tolerance.

3. Enhanced Reliability

Precision surface treatments improve fluid dynamic lubrication, resulting in more reliable operation even in challenging conditions.

4. Consistent Roller Geometry

Rollers are manufactured with tight tolerances, ensuring even load distribution, low vibration, and better preload control.

5. Rigid Configuration

When paired with another tapered roller bearing, TSF units can be preloaded for rigid bearing applications.

6. Smooth Run-in Period

Our TSF bearings are engineered to minimize friction and heat during the initial run-in period, reducing wear and extending service life when properly mounted and lubricated.

7. Separability & Interchangeability

TSF bearings are separable: the inner ring with rollers and cage can be mounted separately from the outer ring. Standardized dimensions allow full interchangeability with similar products.

Operating Conditions

System of Measurement

Inch-based (Imperial system).

Lubrication Options

We offer factory lubrication using over 100 types of lubricants or customer-specified greases. With decades of experience, we ensure optimal lubrication matching each application.

Temperature Resistance

Standard chrome steel TSF bearings operate reliably up to 120°C continuously and up to 150°C intermittently. High-temperature versions are available upon request using specialized materials and greases.

Applications

TSF (Single Row Tapered Roller Bearings with Flange) (Imperial) are widely used in:

• Gearboxes and transmissions
• Thermal power coal transporters
• Port and construction equipment
• Machine tool spindles
• Gear reducers and automotive drive axles
• Agricultural machinery and raking equipment
• Aircraft and railway wheel systems
• Rubber and other industrial machines

Why Choose Us?

With extensive experience in TSF bearings, we help customers overcome technical challenges with tailored solutions. We offer:

• Thousands of bearings in stock, including hard-to-find sizes
• Fast global shipping—most orders ship the same day
• Strong presence in the U.S. market, with 60% of clients from North America
• Applications in high-end products like the Mercedes-Benz S-series console

We’re not just bearing suppliers—we are solution providers. Our team of expert engineers delivers client-specific advice, ensuring the best bearing performance for your unique working conditions.

Interchangeability

Our TSF (Single Row Tapered Roller Bearings with Flange) (Imperial) are fully interchangeable with equivalent products from major brands like Timken, offering easy replacement and integration into existing systems.