Cross Roller Bearing

Cross Roller Bearing – High-Precision Rotary Solution by Heng Guan Bearing

At Luoyang Heng Guan Bearing Technology Co., Ltd., our cross roller bearing solutions represent over 20 years of engineering excellence in precision motion control. Featuring an optimized V-shaped raceway design with cylindrical rollers arranged orthogonally at 90°, these bearings simultaneously handle radial, axial, and moment loads in a single compact unit. Our product range covers bore diameters from 50 mm to 2000 mm, with cross-sectional heights ranging from 20 mm to 150 mm. Manufactured from high-strength 50Mn/42CrMo alloy steel rings and GCr15 bearing steel rollers, they offer precision grades from P0 to P4. ISO 9001 certified and RoHS compliant, we serve customers in more than 50 countries with reliable rotational bearing solutions.

Cross Roller Bearing Details

Our product utilizes a unique crossed-roller arrangement that distributes loads equally over all contact points. The inverted V-groove raceway—refined through scientific modeling—ensures optimal stress distribution under multi-directional forces.

Unlike conventional bearings requiring stacked configurations, this single-unit design eliminates housing complexity. You get exceptional tilting stiffness and near-zero backlash, critical for applications requiring sub-micron repeatability. The integrated structure reduces overall machine footprint by up to 40% compared to double-bearing assemblies.

Each bearing undergoes vacuum heat treatment for uniform hardness (58-62 HRC) and precision grinding to achieve surface roughness below Ra 0.2 μm. Oil-resistant nitrile rubber (NBR) seals protect against contaminants in harsh mechanical environments.

Why Choose Us

20+ Years of Specialized Experience

Our engineering team focuses solely on high-precision rotary bearings. We've unraveled complex motion challenges in robotics, aviation, and medical equipment where others failed to deliver.

Proven Production Capabilities

CNC vertical machines, heat treatment machines, and Gear hobbing machines enable us to maintain tolerances within ±0.005 mm. Our 50+ member R&D team continuously optimizes raceway geometry for your specific load profiles.

Flexible Customization

We handle non-standard designs without requiring your 3D drawings. Send us legacy bearing samples or performance requirements—our reverse engineering service develops optimized solutions within 2 weeks.

Global Supply Reliability

With clients in Germany, the USA, and 48 other countries, we understand cross-border quality requirements. Standard products ship within 5 business days from our Luoyang facility.

Technical Specifications

Features and Benefits

Space-Saving Integration

By combining radial, axial, and moment load capacity in one bearing, you eliminate dual-bearing setups. This cuts assembly time by 60% and reduces housing weight significantly.

Superior Rotational Accuracy

Crossed rollers maintain consistent contact over the V-groove, preventing micro-movements. You achieve repeatable positioning within ±3 arc-seconds—essential for robotic arm joints and indexing tables.

Enhanced Rigidity Under Moment Loads

The 90° roller arrangement creates a triangulated load path. When external torque tries to tilt the inner ring, opposing rollers prevent distortion quickly. Your equipment maintains alignment even during rapid direction changes.

Low Friction and Heat Generation

Precision-ground contact surfaces minimize rolling resistance. Operating temperatures remain 15-20°C cooler than ball-bearing options, extending lubrication intervals and component lifespan.

Simplified Maintenance

Sealed designs keep contaminants out for 5,000+ hours in dusty environments. When relubrication is required, easily accessible oil fittings reduce downtime to below 10 minutes per unit.

Applications

Industrial Robotics

In 6-axis articulated robots, our bearings handle the complex forces at each joint. They maintain positional accuracy during 24/7 operation in car welding lines and component assembly.

Medical Imaging Equipment

CT scanner gantries rotate at high speeds while supporting heavy X-ray tubes. The bearing's vibration-damping properties ensure image sharpness by eliminating mechanical noise below 45 dB.

Precision Machine Tools

CNC rotary tables depend on our P5-grade cross roller bearings to keep workpieces stable during multi-axis processing. Thermal stability avoids precision drift when machining aviation turbine blades.

Optical Instruments

Telescope mounts and servo tracking systems utilize ultra-thin RA-series bearings. Their low starting torque enables smooth tracking of celestial objects without motor strain.

Defense and Aerospace

Radar antenna positioners and rocket guidance systems require zero-backlash bearings. Our products meet MIL-STD vibration and shock requirements in extreme temperature ranges.

Installation Guide

1.Clean Mounting Surfaces: Expel burrs and flotsam and jetsam from lodging and Shaft. Wipe with lint-free cloths.

2.Verify Fit Resistances: Utilize go/no-go gages to affirm shaft and lodging measurements coordinate plan specs (regularly h6/H7).

3.Apply Pre-Load: Fix mounting jolts in a star design to indicated torque (counsel datasheet). Degree hub play with a dial indicator—target 0.02-0.05 mm.

4.Lubricate Legitimately: Infuse lithium-based oil (NLGI Review 2) through fittings until slight flood shows up at seals.

5.Conduct Run-In: Work at 30% appraised speed for 2 hours. Screen temperature—should stabilize underneath 50°C over ambient.

Exhibition

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

Partners

Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Testing & Certification

Every production batch undergoes:

· Coordinate Measuring Machine (CMM) inspection for raceway geometry

· Vibration analysis to detect imbalance or defects

· Load cycle testing simulating 10,000+ hours of operation

Our facility holds ISO 9001:2015 certification. Products comply with RoHS directives for global market access. Test reports accompany each shipment for your quality records.

Packaging & shipping

Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution, such as: wooden crate packaging, sturdy frame packaging, or composite reinforced packaging (wooden crate + iron frame).

Maintenance and Care

Relubrication Interim: Each 2,000 working hours or 6 months (whichever comes first)

• Inspection Focuses: Check for abnormal commotion, expanded contact, or temperature rise over baseline
• Seal Substitution: Supplant NBR seals every year in high-contamination environments
• Bolt Retorquing: Confirm mounting jolt pressure each 5,000 hours to anticipate loosening

Avoid utilizing compressed discuss straightforwardly on seals—this powers contaminants past obstructions. Instep, wipe outside surfaces with moist cloths amid planned upkeep windows.

FAQ

Q: Can you supply bearings with inch-based dimensions?

A: Yes. Provide target dimensions, and we'll manufacture to ANSI/ABMA tolerances.

Q: What's the lead time for custom sizes not in your catalog?

A: Standard customization takes 3-4 weeks after drawing approval. Rush orders available with 50% surcharge.

Q: Do you provide installation training for our technicians?

A: We offer on-site guidance (travel costs apply) or detailed video tutorials for common mounting scenarios.

Q: How do I select between P5 and P4 precision grades?

A: Choose P4 when rotational accuracy requirements are below ±5 arc-seconds. P5 suits most industrial applications at lower cost.

Q: Can these bearings operate in vacuum environments?

A: Standard seals aren't suitable. Request our dry-lubricated version with solid lubricant coatings for aerospace vacuum applications.

Contact Us

Ready to solve your precision motion challenges? Our engineers are standing by to recommend the optimal bearing configuration for your application. Reach us directly at mia@hgb-bearing.com for technical consultations, custom quotes, or sample requestsof cross roller bearing .