News

What is an XR/JXR Cross Tapered Roller Bearing?

An XR/JXR Cross Tapered Roller Bearing is a high-precision, compact bearing using tapered rollers arranged perpendicularly (crossed at 90°) within inner and outer rings, allowing it to handle heavy radial, axial, and overturning moment loads simultaneously, offering superior rigidity, high accuracy, and space savings for demanding applications like rotary tables, robots, and machine tools. It's similar in concept to crossed cylindrical roller bearings (CRB) but uses tapered rollers for even higher load capacity and stability. 

Features of XR/JXR Cross Tapered Roller Bearing 

Ultra-high rigidity:The line-contact load-bearing design combined with the integral inner and outer ring structure increases rigidity by more than 50% compared with conventional crossed cylindrical roller bearings. It ensures no deformation under heavy-load working conditions.

Strong heavy-load capacity :The optimized cone angle of tapered rollers enhances load-bearing density by over 60%. The maximum axial bearing capacity reaches 800 KN and the maximum radial bearing capacity reaches 650 KN, adapting to ultra-heavy composite load scenarios.

Precise installation and positioning:The integrated shoulder structure with standard mounting holes reduces assembly steps and cumulative errors. The coaxiality error is ≤0.003 mm, ensuring stable operation of equipment under heavy loads.

Excellent import substitution advantage:Its technical indicators are fully aligned with imported brands such as SKF and INA. The procurement cost is reduced by 35%-50%, and it supports urgent production services to meet emergency project needs.

Strong environmental adaptability:Multiple sealing options are available, including open type, UU/U contact rubber seals, and ZZ labyrinth seals. It adapts to various harsh environments such as high temperature, dust, and humidity, and its service life is extended by 40% compared with ordinary bearings.

Flexible customization support:It supports non-standard customization of size, tapered roller angle (15°-25°), mounting hole and shoulder specifications. It also provides customized solutions such as corrosion-resistant SUS440C material and high-low temperature lubrication.

Applications of XR/JXR Cross Tapered Roller Bearing

Heavy-duty machine tools:It is widely used in CNC rotary tables, vertical and horizontal machining centers, and large indexing tables. It can withstand heavy cutting forces and tilting moments, ensuring machining accuracy of large workpieces.

Industrial turntables and indexing equipment:Applied to large precision rotary tables and automated indexing platforms. It maintains stable rotation and precise positioning even under eccentric and impact loads.

Construction and heavy industrial equipment:Used in the slewing mechanisms of excavators, cranes, and lifting platforms. It handles the combined weight of equipment structures and dynamic shock loads during operation.

Steel and metallurgical machinery:Integrated into rolling mills, continuous casting equipment, and coil handling systems. It performs reliably in extreme load and harsh working environments with high temperature and dust.

Wind power equipment:Applied to yaw and pitch systems of wind turbines. It supports the enormous weight of the nacelle and aerodynamic forces on the blades, ensuring long-term stable operation.

Aerospace and defense equipment:Used in radar antenna rotation systems, missile launch platforms, and heavy-duty gimbal assemblies. Its high rigidity ensures stable tracking and accurate positioning of mission-critical equipment.

Mining equipment:Applied to crushers, bucket wheel excavators, and stackers. It is designed to handle very high loads, shock, and vibration in harsh mining environments.

Large precision measuring and testing equipment:Used in heavy-load test rigs and large rotating measurement systems, meeting the high-precision positioning requirements of testing equipment.

Factors Affecting the Price of XR/JXR Cross Tapered Roller Bearing

Size and load rating:The larger the inner diameter (150–2463.8 mm) and outer diameter (230–2819.4 mm), the more raw materials are consumed, and the higher the processing difficulty, leading to higher prices. Bearings with ultra-high load ratings require special material treatment, further increasing costs.

Precision grade:Precision grades include P5, P4, and P2. High-precision bearings (P2/P4) need to undergo strict grinding and precision testing processes, and their prices are 40%-70% higher than those of P5 grade bearings.

Material selection:Bearings made of SUS440C stainless steel (corrosion-resistant) are 50%-80% more expensive than those made of conventional GCr15SiMn steel. Custom composite material cages will also increase costs accordingly.

Sealing structure type ZZ labyrinth seals with enhanced protection performance have higher processing costs than open-type bearings. UU/U contact rubber seals are priced between the two, depending on the material and manufacturing process.

Customization requirements Non-standard size customization, tapered roller angle optimization, and special lubrication solutions require additional R&D and testing, increasing production costs by 30%-60%.

Order quantity and delivery time Bulk orders (≥300 pieces) can enjoy a 15%-25% quantity discount. Small-batch orders (≤50 pieces) or urgent orders (delivery within 10 days) will incur additional scheduling and logistics costs.

What Factors Should Be Considered When Purchasing XR/JXR Cross Tapered Roller Bearing

Matching of working conditions:Clarify key parameters such as operating load, rotational speed, working temperature, and environmental cleanliness. For high-temperature environments, select GCr15SiMn material with high-temperature special grease; for strong corrosive environments, choose SUS440C stainless steel with ZZ labyrinth seals.

Confirmation of size and precision Determine the inner diameter, outer diameter, and cross-section height (30–114.3 mm) according to equipment design drawings. For precision equipment such as CNC machining centers, prioritize P2/P4 high-precision bearings; for general heavy-load equipment, P5 grade can balance performance and cost.

Selection of materials and sealing types For general heavy-load and clean environments, GCr15SiMn steel and open-type bearings are sufficient. For dusty and humid industrial environments, select UU/U contact rubber seals; for high-impact scenarios, ZZ labyrinth seals are the best choice.

Assessment of supplier qualifications Verify the supplier's production capacity, such as whether it has CNC precision grinding equipment and heavy-load performance testing instruments. Check quality certifications such as ISO9001 and after-sales service capabilities, prioritizing suppliers with professional experience in XR/JXR series bearings.

Balance of cost-effectiveness Compare technical parameters and prices of different suppliers. Domestic brands like NewBee Transmission can replace imported brands, with a cost advantage of 35%-50% and flexible customization services, suitable for both mass production and small-batch customization needs.

Supplier of XR/JXR Cross Tapered Roller Bearing

NewBee Transmission is a professional supplier of high-quality XR/JXR Cross Tapered Roller Bearings, committed to providing reliable heavy-load bearing solutions for global customers in fields such as heavy-duty machine tools, wind power, and aerospace.

Comprehensive product range The standard XR/JXR series covers inner diameters of 150–2463.8 mm, outer diameters of 230–2819.4 mm, and cross-section heights of 30–114.3 mm, with precision grades from P5 to P2. It provides three sealing options to meet the needs of different working environments.

Advanced manufacturing capabilities The company adopts international advanced CNC grinding machines and heavy-load performance testing equipment. It implements strict quality control throughout the production process, including roller sorting, raceway precision grinding, and fatigue life testing, ensuring product consistency and reliability.

Professional customization services It can provide one-stop customization solutions such as non-standard size design, tapered roller angle optimization, mounting hole and shoulder specification adjustment, and special lubrication scheme customization. It also provides technical support from product design to after-sales installation.

Reliable quality assurance All products comply with ISO9001 quality management system standards, with a product warranty period of 1.5 years. The company has a perfect after-sales service system, providing on-site installation guidance and maintenance training for customers.

High cost-effectiveness Relying on localized production and optimized supply chain management, the product price is 35%-50% lower than that of imported brands. The delivery cycle is short, with standard models delivered in 10–20 days and customized models supported for urgent production.

Precautions for Using XR/JXR Cross Tapered Roller Bearing

Standardized installation operation - Before installation, thoroughly clean the installation surface to ensure no burrs, oil stains, or impurities, and the flatness of the mounting surface should be ≤0.005 mm/m. - Use special pressing tools for assembly, apply force evenly on the bearing ring, and prohibit hammering to avoid damage to the raceway and rollers. - Calibrate the coaxiality after installation to ensure the error is ≤0.003 mm, and tighten the mounting bolts according to the specified torque.

Scientific lubrication maintenance - Open-type bearings need regular external lubrication, and the lubricating grease should be replaced every 1500–2500 working hours. Sealed bearings should be checked regularly for grease leakage. - Select the appropriate lubricating grease according to the working environment. High-temperature environments should use high-temperature resistant grease, and corrosive environments should use corrosion-resistant grease.

Operation status monitoring - During operation, monitor the bearing temperature in real time. The typical temperature rise should be ≤18°C. If the temperature is too high, check whether the lubrication is sufficient or whether the installation is misaligned. - Regularly check the vibration and noise of the bearing. Abnormal vibration or noise may indicate problems such as bearing wear or overload, and the equipment should be shut down for inspection in time.

Proper storage and handling - Store the bearing in a clean, dry, and ventilated environment with a humidity ≤60%. Avoid direct contact with corrosive substances such as acids and alkalis to prevent rust. - When transporting the bearing, use shockproof packaging, avoid collision and falling, and place the integral ring horizontally to prevent deformation.

Technical Specifications of XR/JXR Cross Tapered Roller Bearing

For technical specifications, pricing, or custom engineering solutions:

Email: paul@newbeetrans.com

Website: www.newbeetrans.com