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Thin Section Tapered Roller Bearing

Thin section tapered roller bearings are a specialized type of bearing that combines the space/weight-saving benefits of thin section designs with the high load-carrying capacity (especially for combined radial and axial/thrust loads) of traditional tapered roller bearings.

ZMS is a professional supplier of tapered roller bearings in China. We can custom made by customer requirements.

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Characteristics

∙ Primarily designed for radial loads, with a contact angle of approximately 10–15° (lower than many standard tapered rollers).
∙ Can accommodate some axial loads due to the tapered geometry.
∙ Higher load capacity than thin section ball bearings of similar size.
∙ Materials typically through-hardened AISI 52100 steel rings and rollers.
∙ Often open design (no seals standard, though variants may exist).

Advantages

Space and weight savings — Up to 85% lighter and smaller envelope than conventional bearings for similar bore sizes.
Higher load/stiffness — Better for applications needing more capacity than thin section ball bearings provide.
Design flexibility — Large bore-to-cross-section ratios enable compact, lightweight systems.
Low friction and good running accuracy in suitable conditions.
Combined load handling — Superior to most thin section ball types for radial + axial/moment loads.

Maximum Load Capacity in a Miniaturized Envelope

Unlike standard thin section ball bearings, ZMS tapered roller design features line contact between the rollers and raceways. This allows them to support exceptionally high combined loads (heavy radial forces and unidirectional axial thrust) within a remarkably small radial cross-section.

Unmatched Stiffness for Precision Engineering

For applications like robotic arm joints, radar tracking systems, and rotary tables, precise positioning is mandatory. Thin section tapered roller bearings are designed to be mounted in pairs and adjusted to a specific preload (negative clearance). This preloading eliminates all internal play and drastically increases the overall stiffness of the shaft assembly, ensuring flawless rotational accuracy even under shifting dynamic loads.

Drastic Weight Reduction for Aerospace and Robotics

By utilizing a cross-section that is significantly smaller than standard ISO metric tapered bearings, ZMS thin section bearings allow designers to hollow out shafts and downsize surrounding housing components. This cascading effect can lead to up to an 80% reduction in overall system weight. They are the preferred choice for weight-critical applications including:

Aerospace targeting and navigation systems
Harmonic drives and robotic wrist joints
Medical imaging equipment (CT scanners)
Optical and microwave radar mounts