Combining two rows with a controlled preload creates a rigid, highly customisable bearing arrangement
Products
DOUBLE ROW TAPERED ROLLER BEARINGS
Double row tapered roller bearings accommodate heavy radial loads as well as axial loads in both directions. This makes them ideal for applications requiring a high degree of stiffness, such web printing machines, gearboxes, hoisting equipment, rolling mills, and tunnelling machines used in the mining industry.
Series TQO and TQIT — straight bore and taper bore, in TDI and TDO arrangements
- Two rows of tapered rollers in a compact back-to-back unit
- Bidirectional axial load capacity alongside high radial loads
- Preferred for heavy-duty gearboxes where housing length must be minimised
- Custom configurations available on request
Features
When double row tapered roller bearings are arranged face-to-face:
An intermediate spacer is positioned between the two cups
Load lines converge toward the bearing axis
Axial loads in both directions are accommodated by each bearing
Preset assemblies that are ready to mount and easy to dismount
When arranged back-to-back:
An intermediate spacer is positioned between the two cones
Load lines diverge toward the bearing axis, providing a rigid bearing arrangement capable of handling tilting moments
Advantages
Improves performance and increases power density while reducing friction
Optimised contact surfaces support hydrodynamic lubricant film formation for smooth, low-friction running
Ensures balanced load distribution with minimal noise and vibration
Manages axial loads in both directions with specific clearance or preload
Long service life with low maintenance requirements
Frequently Asked Questions
Tapered roller bearings are used wherever a shaft carries both radial load and axial thrust at the same time. Common applications include industrial gearboxes, wheel hubs, mining crushers, agricultural machinery, cement plant equipment, and machine tool spindles.
Four components: the outer ring (cup), the inner ring (cone), the tapered rollers, and the cage. The cup and cone are separable, so each can be mounted independently onto the shaft and into the housing.
The separable design allows the cup to be fitted into the housing and the cone assembly onto the shaft independently. This simplifies installation, makes alignment easier, and allows precise preload to be set during assembly.
Preload is the controlled axial force applied to a bearing during installation to eliminate internal play. In tapered roller bearings, preload can be precisely adjusted because the cup and cone mount separately. Correct preload directly affects shaft positioning accuracy and bearing service life.
Both radial load (perpendicular to the shaft) and axial load (along the shaft) simultaneously. The ratio of radial to axial capacity depends on the contact angle of the bearing — a larger contact angle handles more axial load.
The angle between the bearing axis and the line of contact between roller and raceway. A larger contact angle means higher axial load capacity. The contact angle is selected based on the load conditions of the specific application.
SAE 52100 high-carbon chromium bearing steel for the rings and rollers. This grade provides the hardness, toughness, and fatigue resistance needed for long service life under high combined loads. At V-CUBE, all rings and rollers are manufactured from SAE 52100 steel with no substitution on raw material.
Service life depends on correct specification, proper installation, and appropriate lubrication. When all three are right, tapered roller bearings are among the longest-lasting bearing types in heavy industrial use. Crowned roller profiles and optimised flange finish at V-CUBE contribute further to extended service intervals.
The most common causes are incorrect preload at installation, contaminated or insufficient lubrication, shaft misalignment, and operating beyond the bearing's rated load. Most failures are preventable with correct specification and installation practice.
Yes. V-CUBE bearings are manufactured to ISO dimensional standards and are direct replacements for equivalent series from established premium import brands. No changes to shaft dimensions, housing dimensions, or maintenance procedures are required.