Crossed Tapered Roller Bearing

LYJW crossed roller bearing is an excellent choice for applications with high rotation accuracy. Its divided structure makes it easy to operate when installing the inner and outer ring.

Crossed tapered roller bearings are suitable for moment load, axial load or thrust load in all directions. Their steep-angle tapered geometry increases rigidity.

High Load Capacity

Crossed Tapered Roller Bearing contain double sets of raceways and rollers brought together at a high angle with alternate rollers facing in opposite directions. This enables the bearing to withstand high overturning moments. In addition, the steep-angle tapered geometry makes the effective bearing spread much greater than the width of the bearing itself. This design saves space and reduces the size of the housing, allowing one bearing to replace multiple single-row bearings.

IKO crossed roller bearings are designed to offer the highest levels of rotational accuracy and rigidity while conserving space and saving material costs. The bearing’s compact structure features rollers that are crossed at right angles between the inner and outer rings with nylon separators. This allows one bearing to support radial loads, axial forces, tilting moment loads and any combination of these loads.

This design can also handle a higher level of rotational speed than other friction-reducing linear motion components like ball bearings. However, crossed rollers are less forgiving of mounting surface inaccuracies than recirculating ball bearings, and require surfaces with accuracy that is closer to five to ten microns for optimal performance.

High Precision

Precision crossed roller bearings have cylindrical rollers arranged in a cross arrangement. They can support radial, axial and moment loads simultaneously. They also have high rotation accuracy and rigidity, suited to applications where the lowest center of gravity is required such as precision machining centers, industrial robots and ultra-precision rotary tables.

LYJW offers a wide range of precision crossed roller bearings, designed to meet your specific application requirements. They can be supplied with normal clearance, low clearance or preload, and are available in a wide variety of sizes to suit your machine and application.

The large cone angle and tapered geometry of these bearings result in an effective bearing spread that is many times larger than the width of the bearing itself. This design improves the rotation speed and reduces friction during operation. It is ideal for applications where space is limited and high rotational speeds are required, such as precision machining centers, rotary indexing tables for machine tools, large gear hobbing machines, welding manipulators, large radio or optical telescopes and rod center pivots.

Low Friction

The alternating rollers of a Crossed Tapered Roller Bearing provide a full line of contact rather than the point-contact that ball bearings offer. This results in a lower friction torque and greater stability, while also protecting against wear to the races and rollers.

The bearings are held inside a cage that prevents roller-to-roller contact, further lowering friction. The cages can be made from plastic or metal. Metal cages are used in applications requiring washdown or that operate in vacuum environments where plastic can outgas.

The use of a cage also lets designers increase the load capacity by up to 250% by positioning the rollers closer together. This can be helpful in a variety of applications, including precision rotary indexing tables for machine tools, large gear hobbing machines, gun or radar turrets, welding manipulators and industrial robots. This configuration also helps ensure a more stable linear bearing, which is important in high-precision applications. It can also reduce axial loads and improve tilting stiffness for smoother movement.

Compact Design

The cross-roller design distributes the load along a line, as opposed to a point, which reduces friction and power loss. It also eliminates the asymmetry of ball/race contact. This asymmetry produces opposing forces and sliding motions between the deformed balls and raceway, causing excessive wear.

The crossed roller bearings have a 90deg V groove on the outer and inner rings with multiple cylindrical rollers & separators arranged in a cross to handle complex loads simultaneously from all directions. This allows one bearing to replace two conventional rear-mounted angular contact ball bearings or double row axial roller bearings.

The cross-roller slewing bearing achieves high rigidity, rotational accuracy and compactness due to its design. This makes it suitable for industrial robots, machine tools, precision rotary tables and medical equipment. It is easy to mount and install. The bearing has low rotational inertia and small running torque. It is also characterized by its stability and reliability. It can support radial, axial and tilting moment loads.