Import Cross Roller Bearing — Buy in wholesale FOB from Supplier in China

The cross roller bearing offered by Luoyang Jcb Bearing Technology Co., Ltd. is manufactured to match the dimensional and performance profiles of NSK NRXT and THK RU/RB series bearings, with precise internal geometry and GCr15 high-carbon chromium steel races. These bearings feature integrated inner and outer rings with cylindrical rollers arranged at 90 degrees, enabling high rigidity and load capacity in both radial and axial directions. Exact sizes include NRXT2508DD, NRXT4010DD, RB20030, and RB50040, with bore diameters ranging from 25 mm to 500 mm and overall heights between 8 mm and 110 mm.

The material is GCr15 (equivalent to SUJ2), hardened to HRC 60 - 62, with synthetic oil lubrication for extended service life in continuous operation. Sealed variants such as NRXT2508DD and RB20030DD include double-lip contact seals to exclude dust and moisture, while open designs like NRXT2508E are suited for applications with external lubrication systems. Typical industry tolerances are P4 or ABEC-7 grade for precision motion control, with radial play under 5 microns and axial play under 3 microns. These specifications align with standard requirements for CNC machine tools and robotic joints where minimal deflection is critical.

These bearings are purchased by manufacturers of industrial automation systems, medical imaging devices, semiconductor handling equipment, and precision rotary tables. Buyers typically require batch sizes from 50 to 500 units, with packaging in vacuum-sealed plastic tubes inside cartons, each bearing individually labeled with part number and serial traceability. Trade terms are commonly FOB Qingdao or CIF destination port, with lead times of 2 - 4 weeks for standard sizes. Custom modifications such as USP-grade variants (RB10020USP) or special coatings are available upon request but require technical documentation review.

Luoyang Jcb Bearing Technology Co., Ltd. is a manufacturer based in Luoyang, Henan Province, China, specialising in precision cross roller bearings for industrial automation and machinery. The company's facility produces bearings to match international series such as NSK NRXT and THK RB, with quality control processes aligned to ISO 9001 standards. The supplier's trust tier is classified as harbor, indicating verified business registration and export experience, though response rate and average reply time are not currently tracked in the system.

The supplier does not claim certifications such as ISO 14001, IATF 16949, or third-party test reports for bearing life or fatigue resistance. No information is provided on annual production volume, workforce size, or past clients. The listing confirms only the ability to replicate standard cross roller bearing geometries and material grades. Buyers should request test certificates for hardness, runout, and load capacity prior to bulk orders.