CRBH-High Rigidity Type

High Rigidity Type Crossed Roller Bearings CRBH Series 

Series CRBH （High rigidity type, Both inner ring and outer ring are integrated）

LYNBC High rigidity type crossed roller bearings CRBH series (IKO corresponding to CRBH series) , both inner and outer rings have a solid one-piece construction. Therefore, high accuracy and high rigidity are achieved, and mounting errors can be minimized. As separators are incorporated between the cylindrical rollers for smooth rotation, these bearings are suitable for applications where rotational speed is comparatively high. CRBH series include two types: CRBH···A (open type, with separator) and CRBH···AUU (sealed type, with separator).

▲ The design’s of all these crossed roller bearings CRBH series are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC technical center if you need any assistance in this area.  

What are IKO CRBH Series High Rigidity Type Crossed Roller Bearings?

The IKO CRBH series are a specialized type of rolling element bearing designed for high precision rotary applications. They are known for their exceptional rigidity and load-carrying capacity, especially in situations involving moment loads. They are called "crossed roller" bearings because the cylindrical rollers are arranged alternately at right angles to each other, separated by spacers. This configuration is crucial for their performance characteristics.

Key Features and Design

Crossed Roller Arrangement: This is the defining feature. Rollers are arranged perpendicularly to each other between inner and outer rings, separated by spacers. This arrangement allows the bearing to handle radial loads, axial loads, and moment loads in any direction simultaneously.

High Rigidity: The crossed roller arrangement significantly increases the bearing's rigidity compared to conventional radial or thrust bearings. This minimizes elastic deformation under load, contributing to higher precision and stability.

High Load Capacity: The design allows for a greater number of rollers within a given footprint, maximizing the contact area and distributing the load effectively. This results in a high static and dynamic load capacity.

Compact Design: Despite their high performance, CRBH bearings are relatively compact, allowing for space-saving designs in machinery and equipment.

Inner and Outer Ring Integrated Design (In Many Models): Many CRBH models feature integrated inner and outer rings. This simplifies mounting and reduces the number of components required. Some models are split rings.

Preload: CRBH bearings are often preloaded during manufacturing. This preload eliminates clearance within the bearing, further enhancing rigidity and improving rotational accuracy. The preload also minimizes wear and reduces noise.

Material: Typically made from high-quality alloy steel, which is hardened and precision-ground to achieve the required dimensional accuracy and surface finish.

Lubrication: These bearings require lubrication (grease or oil) to minimize friction and wear. Lubrication is crucial for their long-term performance. Some models may come pre-lubricated.

Benefits of Using IKO CRBH Bearings

Superior Rigidity: Minimizes deflection and vibration, leading to improved accuracy and performance of the machinery.

High Load Capacity: Handles heavy loads and demanding operating conditions, increasing the lifespan of the bearing and the overall system.

Accurate Rotation: Preload and precise manufacturing contribute to smooth and accurate rotation, essential for applications requiring high precision.

Space-Saving Design: Allows for more compact and efficient machine designs.

Reduced Maintenance: High load capacity and robust design lead to longer service intervals and reduced maintenance requirements.

Versatility: Handles complex load combinations, simplifying the bearing selection process.

Easy Installation (Depending on Model): Integrated rings (in some models) simplify installation and alignment.

Applications

IKO CRBH series bearings are used in a wide range of demanding rotary applications where precision, rigidity, and load capacity are paramount. Some common examples include:

Robotics: Robot joints, rotary tables, and end effectors benefit from the high rigidity and accuracy.

Machine Tools: Rotary tables, indexing heads, and spindle supports in CNC machines.

Medical Equipment: CT scanners, MRI machines, and surgical robots where smooth and precise movement is critical.

Semiconductor Manufacturing Equipment: Wafer handling robots and precision positioning stages.

Inspection and Measurement Equipment: Coordinate measuring machines (CMMs) and other high-precision measurement systems.

Radar and Antenna Systems: Supporting and rotating radar and antenna assemblies.

Optical Instruments: Telescopes, cameras, and other optical systems requiring precise rotational positioning.

Aerospace: Aircraft landing gear and control surfaces.

Industrial Turntables and Rotary Stages: For automated assembly lines and material handling systems.

Why Choose IKO CRBH Series?

IKO (Nippon Thompson Co., Ltd.) is a reputable manufacturer known for producing high-quality linear motion products and bearings. Choosing IKO CRBH series bearings offers several advantages:

Proven Reliability: IKO is a trusted brand with a long history of producing reliable and high-performance bearings.

Wide Range of Sizes and Types: The CRBH series is available in a variety of sizes and configurations to meet specific application requirements.

Technical Support: IKO provides comprehensive technical support to assist with bearing selection, installation, and maintenance.

Consistent Quality: IKO adheres to strict quality control standards to ensure consistent performance.

Availability: IKO has a global network of distributors, making CRBH bearings readily available.