Crossed Roller Bearings
Cross Roller Bearings for Harmonic Reducers
BOM manufactures cross roller bearings engineered for harmonic drive reducer output sections. Available in CSG(CSF) split-outer-ring, CSD integral high-rigidity, and SHG(SHF) bolt-mounting configurations, these bearings carry combined radial, axial, and overturning moment loads through 90° alternating cylindrical rollers. Full-specification custom manufacturing and integrated output assemblies are available.
Key Features
-
Combined Radial, Axial, and Moment Load Capacity
-
Three Series: CSG(CSF), CSD, SHG(SHF)
-
High Rotational Precision (P5 / P4 / P2)
-
Reducer-Matched Model Designations
-
Compact Thin-Section Design
-
Full-Specification Custom Manufacturing Available
Product Inquiry
Product Category
Speak To One of Our Experts
Name can't be empty
Email error!
Message can't be empty
Send message
*We respect your confidentiality and all information are protected.
Description
Reviews
Cross Roller Bearings for Harmonic Reducers
Zero Backlash Customizable
Thin-section cross roller bearing design specifically engineered as the main output bearing for harmonic drive (strain wave) units. These precision components feature orthogonal rolling elements for exceptional moment rigidity and zero play in compact envelopes.
- High Precision Output: Smooth output rotation with exceptional rotational accuracy for demanding automation applications
- Exceptional Moment Rigidity: Orthogonal rolling elements deliver maximum stiffness in minimal envelope for robot joint integration
- Zero-Backlash Design: Low backlash output bearing design ensures rigid torque transmission and repeatable positioning
- Standard Sizes: Available in sizes 14 through 65 frame sizes, matching common harmonic drive reducer configurations
- Long Service Life: Precision-ground raceways and high-purity bearing steel deliver sustained accuracy and load capacity over extended operating cycles
- Full Customization: Non-standard dimensions, sealed/unsealed configurations, and optimized raceway geometry available
Custom Harmonic Reducer Bearing Manufacturing
Integrated Assemblies Engineering Support
Beyond our standard harmonic reducer bearing catalog, BOM engineers and manufactures full-specification custom bearings tailored to your exact application requirements with complete bearing architecture redesign capability.
- Non-Standard Dimensions: Custom bore/OD configurations and inch dimensions outside catalog ranges engineered to your specifications
- Alternative Materials: Stainless steel, ceramic hybrid, and specialty alloy options for extended service life in demanding environments
- Specialized Coatings: DLC, TiN, CrN coatings available to extend bearing life and reduce friction in critical applications
- Custom Preload Methods: Optimized preload specifications and adjustment mechanisms tailored to your exact application
- Bearing Architecture Redesign: Complete structural redesign for unique applications requiring integrated assemblies or consolidated components
- Full Engineering Support: Direct collaboration with your engineering team from concept through production validation and delivery
Output Bearings for RV Reducers
Heavy Payload Customizable
Crossed roller bearings for RV (cycloidal) reducers used in heavy-payload industrial robots. These larger cross-section bearings deliver exceptional tilting moment capacity and load-carrying performance for high-duty robotic applications.
- Large Cross-Section Design: Engineered for heavy payloads with exceptional tilting moment capacity in compact envelope
- Zero-Backlash Output Performance: Rigid bearing geometry ensures repeatable positioning and torque transmission under load
- High Moment Capacity: Optimized roller geometry and raceway design provide exceptional tilting moment stiffness for heavy-duty robot joint applications
- Precision Preload Adjustment: Custom preload specifications and adjustment methods for optimized performance
- Sealed Bearing Options: Contaminant protection variants available for harsh industrial environments
- Direct-Fit Compatibility: Dimensional interchange with standard RV reducer output flanges for straightforward integration and field replacement
Looking for Flexible Bearings (Wave Generator Bearings) for your harmonic drive system? BOM also manufactures specialized elliptical thin-section bearings designed for wave generator cams.
View Flexible Bearings →Harmonic Reducer Bearings: Dimensions
Cross Roller Output Bearings | Sizes 14 through 65 | All dimensions in millimeters | Contact us for custom sizes
| Reducer Size |
OD mm |
ID mm |
Width mm |
|---|
Applications
Industrial Robotics & Collaborative Robots
Harmonic reducer bearings power the precision joints of collaborative and industrial robots, delivering smooth, repeatable motion for assembly, material handling, welding, and machine tending applications.
Semiconductor & Wafer Handling
Precision harmonic drive systems with BOM bearings handle delicate semiconductor wafers and components in fabrication, inspection, and test equipment with zero backlash and exceptional repeatability.
Precision CNC Machine Tools
High-accuracy harmonic reducer bearings support precision spindle drive systems, tool changers, and multi-axis positioning in CNC machining centers with exceptional rotational accuracy and thermal stability.
Medical & Surgical Robotics
Sterile-compatible harmonic bearings enable precise motion in robotic surgery systems, diagnostic equipment, and medical device manufacturing with strict cleanliness and biocompatibility compliance.
About BOM Bearing
BOM manufactures specialized harmonic reducer bearings for precision robotics and automation, delivering exceptional performance in strain wave gear systems worldwide.
- Quality Assurance: ISO 9001, IATF 16949, and ISO 14001 certified; quality and environmental standards validated at every production stage
- Manufacturing Expertise: Complete bearing assemblies for harmonic drive and RV reducer systems, from raw material through final dimensional verification and performance testing
- Precision Engineering: Tight manufacturing tolerances ensure smooth rotation, low noise, and repeatable positioning for robotics and automation applications
- Custom Solutions: Full-specification customization from non-standard dimensions and alternative materials to specialized coatings and complete bearing architecture redesign
- Technical Support: Decades of precision bearing manufacturing experience with engineering team support for application analysis and optimization
_1770101839_WNo_400d600.webp)
Frequently Asked Questions (FAQ)
Why are crossed roller bearings used as the output bearing in harmonic reducers?
Crossed roller bearings arrange cylindrical rollers at alternating 90-degree angles between inner and outer rings. This orthogonal configuration allows a single bearing to carry radial, axial, and moment loads simultaneously with exceptional rigidity in a very thin cross-section. For harmonic reducer output shafts, this means zero-backlash torque transmission and repeatable positioning accuracy in a compact envelope that fits the thin-profile design of strain wave gear systems. BOM also manufactures flexible bearings (wave generator bearings) for the input side of harmonic drive units.
What quality standards does BOM apply to harmonic reducer bearings?
BOM manufactures harmonic reducer bearings under ISO 9001, IATF 16949, and ISO 14001 certified quality systems. Every bearing undergoes full-range dimensional inspection and performance testing to ensure smooth rotation, low noise, and repeatable positioning accuracy required by collaborative robots, SCARA systems, and high-precision automation equipment.
Can BOM customize harmonic reducer bearings for non-standard applications?
Yes. BOM manufactures full-specification custom bearings including non-standard dimensions, alternative materials (stainless steel, ceramic hybrid), specialized coatings (DLC, TiN, CrN), custom preload specifications, and complete bearing architecture redesign. Our engineering team works directly with your application requirements to develop optimized solutions.
What materials are harmonic reducer bearings manufactured from?
Standard harmonic reducer bearings use high-grade bearing steel (100Cr6 / SUJ2) selected for exceptional precision and fatigue resistance. For specialized applications, BOM manufactures custom bearings in stainless steel, ceramic hybrid configurations, and other advanced materials. Specialized coatings including DLC, TiN, and CrN are available to extend bearing life in demanding environments.
How do I select the correct size harmonic reducer bearing for my application?
Harmonic reducer bearing sizes are matched to harmonic drive reducer frame sizes (14 through 65). Consult the harmonic drive reducer specification sheet to identify your frame size, then reference BOM's dimensions table above for the corresponding crossed roller output bearing dimensions. For non-standard or specialized applications, contact BOM engineering for application review and custom bearing recommendation.
0 Comments
Share your thoughts
Showing 6
of 0
reviews
Your rating
Your review *
Your Name *
Enter your Name
Your Email *
Enter your Email
Submit
Contact Us
Get in Touch with Us
Name can't be empty
Email error!
Message can't be empty
error
Send Your Message