Products
Single-Row Tapered Roller Bearings
Product Overview
Single-Row Tapered Roller Bearings use tapered raceways and rollers with a common apex, allowing one compact bearing to carry substantial radial load together with axial load in one direction. The separable cone and cup simplify mounting, inspection, and adjustment of internal clearance or preload.
They are widely selected for wheel hubs, gearboxes, transmissions, machine tool spindles, and agricultural equipment. For bidirectional axial support, two bearings can be arranged back-to-back, face-to-face, or in tandem according to shaft rigidity, load direction, and available mounting space.
Technical Specifications
| Product Type | Single-row tapered roller bearings |
| Design | Separable cone assembly and outer ring cup with tapered raceways |
| Common Series | 302, 303, 313, 320, 322, 323, 329, 330 and inch-series options |
| Load Direction | Combined radial load and axial load in one direction |
| Arrangement Options | Single, back-to-back, face-to-face, or tandem paired arrangements |
| Precision Grades | P0, P6, P5 and application-specific precision options |
| Clearance / Preload | Adjustable endplay or preload according to operating conditions |
| Material Options | Chrome steel rings and rollers with pressed steel or engineered cage options |
| Lubrication | Grease or oil lubrication selected for speed, load, temperature, and service interval |
| OEM Support | Metric or inch dimensions, clearance, preload, cage, lubrication, marking, packaging, and inspection documentation |
Key Features
Combined-load capability – supports high radial loads together with axial load in one direction.
Adjustable operating clearance – separable cup and cone design allows endplay or preload to be set during assembly.
High rigidity – tapered contact geometry provides stable shaft guidance under changing loads.
Flexible bearing arrangements – bearings can be used individually or paired for bidirectional axial support.
Service-friendly construction – separable components simplify mounting, inspection, and replacement.
OEM configuration support – ETM can match dimensions, precision, cage, preload, lubrication, marking, and packaging to project requirements.
Applications
Single-Row Tapered Roller Bearings are used where radial and axial loads act together and the assembly requires accurate clearance adjustment, stable guidance, and reliable operation. Typical sectors include vehicle drivetrains, agricultural equipment, machine tools, mining machinery, and railway drive systems.
Technical Resources
Whether you are an engineer, procurement manager, or equipment maintenance professional, here you will find in-depth content covering bearing operating principles, technical parameter interpretation, industry application guidance, selection methods, installation and maintenance practices, and purchasing considerations.
FAQs
What loads can single-row tapered roller bearings support?
They support substantial radial load together with axial load in one direction. The permissible load depends on bearing size, contact angle, speed, fit, lubrication, and the stiffness of the surrounding shaft and housing.
How should single-row tapered roller bearings be arranged?
A single bearing supports axial load in one direction. For bidirectional axial support, two bearings are commonly mounted back-to-back, face-to-face, or in tandem. The correct arrangement depends on moment load, shaft rigidity, thermal expansion, and installation space.
How is clearance or preload adjusted?
Because the cup and cone are separable, operating clearance or preload can be controlled during assembly using the shaft nut, spacer, shim, or matched bearing arrangement. The final setting should account for fits, temperature rise, and housing stiffness.
When should metric or inch-series bearings be selected?
Metric series are common in standardized industrial and automotive designs, while inch-series bearings are often selected for equipment built around imperial dimensions or established replacement standards. Boundary dimensions and load requirements should guide the choice.
Which industries commonly use single-row tapered roller bearings?
Common applications include automotive wheel hubs and transmissions, agricultural machinery, machine tool spindles, mining gearboxes and conveyors, and railway drive or axle systems.
Can ETM customize single-row tapered roller bearings?
Yes. ETM can support OEM requirements for metric or inch dimensions, precision, clearance, preload, cage design, lubrication, heat treatment, marking, packaging, and inspection documentation.
What lubrication is suitable for single-row tapered roller bearings?
Grease is common in sealed or moderate-speed applications, while oil lubrication is often preferred for higher speed, temperature control, or continuously lubricated gearboxes. Viscosity, base oil, additives, relubrication interval, load, and operating temperature should be evaluated together.
What causes premature failure in single-row tapered roller bearings?
Common causes include incorrect preload or excessive clearance, misalignment, contamination, inadequate lubrication, improper fits, impact damage during mounting, and insufficient shaft or housing rigidity. Installation and operating temperature should be checked when diagnosing abnormal noise or wear.
What information is required to select or quote a single-row tapered roller bearing?
Provide the bearing designation or boundary dimensions, radial and axial loads, speed, load direction, arrangement, desired clearance or preload, shaft and housing fits, lubrication method, operating temperature, required life, quantity, and any marking or packaging requirements.
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