Cross Roller Slewing Bearing

Cross Roller Slewing Bearing – High Rigidity Solution for Heavy-Duty Rotary Applications

When your application demands superior rotational accuracy and structural stiffness, the Cross Roller Slewing Bearing from Luoyang Heng Guan Bearing Technology delivers proven performance. Designed for diameters from 500 to 3500mm and available in five configurations (110/111/112/113/114 series, equivalent to international HJ designation), these bearings provide up to 3–4 times the rigidity of single-row ball slewing bearings of equivalent size. With raceway hardness ranging from 55 to 62 HRC and precision grades from P0 to P4, our products ensure smooth operation under combined axial, radial, and moment loads. ISO9001-certified manufacturing and RoHS compliance guarantee consistent quality for global customers across cranes, excavators, military platforms, and precision test rigs.

Understanding Cross Roller Slewing Bearing Technology

A product uses cylindrical rollers arranged in a 90° crossed pattern between two raceways. This configuration allows adjacent rollers to alternate their load-bearing direction, creating high rigidity in all axes within a compact envelope. The crossed arrangement eliminates the ball skidding phenomenon common in four-point contact ball bearings during partial-load operation, ensuring precise rotation control throughout the duty cycle.

Important Product Distinction:

The term "crossed cylindrical roller bearing" refers to two distinct product categories in the market. Our focus is on heavy-duty product without gear and geared variants (11 series / HJ series), covering 500-3500mm+ diameters for cranes, excavators, and military equipment. This differs from precision cross roller bearings (RB/RA/RU/SX series) used in robotics and CNC machines, which range from 40-800mm and serve different applications. If your application requires compact precision bearings under 800mm, please specify so we can recommend the appropriate solution.

Product Series and Configurations

Our product line covers five distinct series, each optimized for specific drive configurations:

Note: Types A and B differ in gear module selection for the same bearing diameter, allowing optimization for specific motor/reducer combinations. Our 11 series bearings are dimensionally interchangeable with international HJ series bearings.

Certification

Industry-Specific Applications

Crane Cross Roller Slewing Bearing

Boom rotation precision and structural rigidity make our products ideal for truck, tower, and marine cranes. The crossing roller design minimizes "ball skidding" in four-point contact ball bearings during partial-load operation, guaranteeing smooth boom control at all extension lengths. This advantage is crucial for micro-speed positioning and asymmetric boom loading.

Excavator Cross Roller Slewing Ring

Cross Roller Slewing Bearings provide high stiffness, small envelope, and accurate rotation control for digging and loading cycles in medium to large hydraulic excavators (20-50 ton class). The 113/114 series internal gear layout is the most prevalent, as it protects gear teeth from environmental contamination and has a lower overall diameter than external gear designs.

Army Turntable Cross Roller Bearing

Missile launcher platforms, radar antenna turntables, and armored vehicle turrets require maximum rotational precision and zero-clearance. The industry standard for military applications is the products with precision-ground raceways (P4 grade). Crossed rollers give uniform stiffness in all load directions, essential for dynamic tracking accuracy.

High-Precision Rotary Table Bearing with Test Platform Slewing Ring

Industrial test rigs, welding positioners, and large precision rotary tables use goods for their high load capacity and sub-millimeter rotational accuracy. High precision rotary table bearing configurations with P4 grade achieve positioning repeatability greater than 0.05mm at multi-meter diameters, whereas test platform slewing rings with 110 series (without gear) are common for passive rotation applications.

Performance Advantages Over Alternative Designs

Compared to Single-Row Ball Slewing Bearings:

· 30-50% higher moment stiffness at equivalent diameter

· Smoother rotation with reduced stick-slip behavior

· Better resistance to raceway deformation under eccentric loading

· Lower rotational friction due to line contact versus point contact

Compared to Double-Row Ball Slewing Bearings:

· More compact axial height (typically 20-30% reduction)

· Simpler assembly with fewer components

· Lower noise during low-speed rotation

Trade-off Consideration: Cross roller designs generally cost more than ball-type bearings of the same size. Four-point contact ball designs remain a cost-effective choice for general-duty applications; specify cross roller when rigidity and positioning accuracy are system priorities.

Manufacturing Capabilities and Quality Standards

Heng Guan Bearing is ISO9001-certified and controls manufacturing from raw material to assembly. We have CNC vertical lathes for raceway machining, CNC quenching equipment for controlled heat treatment (55-62 HRC raceway hardness), CNC gear shapers for tooth profile precision, and coordinate measuring devices for dimensional verification. Our precision grades range from P0 (standard) to P4 (precise) for your application.

Delivery Schedule:

The In Stock product ship within 7-15 days from stock. Custom setups take 4-6 weeks, depending on intricacy.

Exhibition

We attend many famous international exhibitions such as Shanghai International Maritime Exhibition,Mining World Russia, bauma China, CTT Russia, etc

Partners

We deeply value your trust and will repay that trust with consistently exceptional quality.

Packaging & shipping

Your products are one of a kind, and subsequently their transportation prepare ought to be immaculate. For this reason, we offer proficient and customized bundling administrations. Our experienced group will evaluate the characteristics of your merchandise, transportation course, and natural necessities to suggest the most secure arrangement, such as wooden case bundling, durable outline bundling, or composite fortified bundling (wooden carton + press frame).

Positive customer reviews

Our product quality and service have won widespread praise from our customers.

FAQ

Q: What is the difference between the product and single row ball slewing bearing?

A: The key difference is the rolling element: cross roller uses cylindrical rollers in 90° crossed arrangement, while single row ball uses steel balls in four-point contact. Cross roller provides significantly higher rigidity and better rotational accuracy than single-row ball; specify it where stiffness and precision are critical.

Q: What do the series numbers 110, 111, 112, 113, 114 mean?

A: These are Chinese standard designations: 110 = without gear, 111 = external gear (type A), 112 = external gear (type B), 113 = internal gear (type A), 114 = internal gear (type B). Types A and B differ in gear module selection.

Q: What is the HJ series cross roller slewing ring?

A: The HJ series is the international designation for single row products, equivalent to China's 11 series. Our 11 series bearings are dimensionally interchangeable with HJ series bearings.

Contact Us

Need assistance selecting the right cross roller slewing bearing configuration for your equipment? Our engineering team is ready to review your specifications and provide technical recommendations. Send your inquiries to mia@hgb-bearing.com for prompt support on product selection, custom design options, or sample availability.