RB3010 cross roller bearing is a compact precision bearing with a 30 mm bore, 55 mm outer diameter and 10 mm width. It is designed for rotary mechanisms requiring high rigidity, accurate positioning and stable rotational performance.
LYDL manufactures RB3010 bearings for robot joints, precision rotary tables, measuring instruments, optical inspection systems, semiconductor equipment and industrial automation. P5, P4 and P2 accuracy grades, clearance or preload control, sealing options and customized laser marking are available.
RB3010 cross roller bearing is a compact, high-rigidity bearing designed for precision rotary applications where installation space is limited. Its principal dimensions are 30 mm bore, 55 mm outer diameter and 10 mm width.
The bearing uses an integrated inner ring and a separable outer ring. Cylindrical rollers are arranged alternately at 90 degrees between precision-ground V-shaped raceways. This internal structure allows a single RB3010 bearing to support radial loads, axial loads in both directions and overturning moments simultaneously.
RB3010 is particularly suitable for mechanisms in which the inner ring rotates and high rotational accuracy is required. Typical applications include robot joints, precision rotary tables, measuring instruments, optical inspection systems, semiconductor equipment and compact automation modules.
Note: Load ratings may vary slightly according to internal design, accuracy grade and production specification. Please request the latest LYDL drawing and technical data before final equipment design.
Request a Quote or Technical Review
Need a quotation or help selecting a cross roller bearing? Send LYDL your model number, required quantity and drawing, if available.
For a technical review, please include your loads, speed, accuracy grade, and clearance or preload requirements. Our team can help confirm the suitable configuration, pricing and lead time. Request a Quote by Email | Chat with LYDL on WhatsApp
RB3010 Structure and Operating Principle
The RB series is the basic outer-ring-separable type of cross roller bearing. The integrated inner ring provides stable support for applications requiring accurate inner-ring rotation, while the divided outer ring enables the assembly of crossed rollers and spacers.
Each cylindrical roller is positioned perpendicular to the adjacent roller. This crossed arrangement distributes loads in multiple directions and provides substantially higher rigidity than many conventional single-row radial bearings of a comparable size.
Individual separators reduce direct contact between adjacent rollers, helping maintain smooth rotation, consistent roller spacing and stable friction torque. Because one RB3010 can support combined loads, it can replace a more complicated arrangement of separate radial and thrust bearings in many compact rotary mechanisms. [Insert Image 2: RB3010 dimensional drawing or cross-sectional structure diagram]
Key Features of the RB3010 Bearing
Compact 30×55×10 mm Dimensions
With a 30 mm bore and only 10 mm width, RB3010 is suitable for compact machinery where installation space and total assembly weight must be controlled.
High Rigidity and Moment Load Capacity
The crossed roller arrangement creates a large effective contact span. This improves resistance to deformation under radial, axial and overturning moment loads, making the bearing suitable for precision positioning systems.
Accurate Inner-Ring Rotation
The one-piece inner ring supports stable rotational accuracy and is particularly suitable when the inner ring is the rotating component and the outer ring is fixed in the housing.
Stable Rotational Torque
Precision-ground raceways, controlled roller sorting and properly selected internal clearance help the bearing maintain smooth and repeatable rotational performance.
Multiple Accuracy and Preload Options
LYDL can manufacture RB3010 bearings in P5, P4 and P2 accuracy grades. Internal clearance, preload, grease, sealing and marking can be selected according to operating speed, rigidity, positioning accuracy and environmental requirements.
Typical RB3010 Applications
RB3010 is widely used in compact precision rotary mechanisms, including:
Small industrial robot joints and rotary axes
Collaborative robot and manipulator components
Precision indexing tables and compact rotary stages
Coordinate measuring and inspection equipment
Optical instruments and camera positioning systems
Semiconductor manufacturing and inspection equipment
Medical diagnostic and laboratory equipment
Electronic assembly and automation machinery
Compact antenna and sensor positioning mechanisms
Suitability for a specific application should be confirmed according to the actual load spectrum, rotational speed, required service life, mounting rigidity, lubrication condition and operating environment. [Insert Image 3: Robot joint, precision rotary stage or inspection equipment application]
RB3010 Accuracy, Clearance and Sealing Options
Option
Recommended Use
P5 accuracy
General industrial automation and positioning mechanisms
P4 accuracy
Precision robots, rotary stages and measuring equipment
P2 accuracy
Applications requiring very high running accuracy and strict quality control
High-rigidity positioning systems requiring reduced internal play
UU double seals
Equipment requiring improved protection against dust and contamination
Excessive preload can increase friction torque and operating temperature. The appropriate clearance or preload should therefore be selected according to the required rigidity, rotational speed and housing accuracy.
Equivalent Designations and Ordering Information
Depending on clearance, sealing and accuracy requirements, common ordering references may include:
RB3010 – basic open type
RB3010U – sealed on one side
RB3010UU – sealed on both sides
RB3010UUC0 – double-sealed type with C0 clearance
RB3010UUCC0 – double-sealed type with controlled negative clearance or preload
RB3010UUCC0P4 – double-sealed, preloaded and P4 precision version
Suffix definitions can vary between manufacturers. When requesting a quotation, please provide the complete existing bearing designation, equipment application, required accuracy, clearance or preload, sealing configuration and quantity.
Installation Recommendations
Because the RB3010 outer ring is separable, both halves must be securely supported by the housing and clamping cover. Uneven clamping force, insufficient shoulder accuracy or excessive interference may deform the bearing rings and reduce rotational accuracy.
Inspect the shaft, housing and mounting shoulders before installation.
Keep all mating surfaces clean and free from burrs or impact damage.
Apply clamping force evenly around the circumference.
Do not strike the bearing directly during assembly.
Avoid applying installation force through the rollers.
Check rotational torque and runout after final tightening.
Use the recommended tightening sequence for the housing cover.
For P4 or P2 applications, shaft and housing tolerances, shoulder perpendicularity, clamping deformation and assembly cleanliness must be controlled carefully. High bearing accuracy alone cannot compensate for an inaccurate mounting structure.
LYDL Manufacturing and Quality Control
LYDL manufactures precision cross roller bearings through controlled machining, heat treatment, cryogenic stabilization, raceway grinding, superfinishing, roller sorting and clean assembly processes.
For RB3010 precision bearings, key inspection items can include dimensional accuracy, raceway geometry, radial runout, axial runout, internal clearance, preload, rotational torque and surface condition. Inspection documentation and serial-number traceability can be provided according to confirmed order requirements.
Available customized options include:
P5, P4 or P2 accuracy grades
Specified clearance or preload range
Open, single-sealed or double-sealed construction
Application-specific grease selection
Low-friction or controlled-torque configurations
Customized laser marking and packaging
Dimensional inspection and accuracy reports
OEM and small-batch production support
[Insert Image 4: Actual RB3010 inspection, clean assembly or packaging photo]
Why Choose LYDL RB3010 Cross Roller Bearings?
LYDL supplies RB3010 bearings for customers who require a practical balance of accuracy, rigidity, delivery time and manufacturing flexibility. Rather than supplying only a standard catalogue configuration, we can match the bearing specification to the equipment’s load, speed, mounting and positioning requirements.
Precision manufacturing for demanding rotary applications
P5, P4 and P2 accuracy options
Controlled clearance and preload capability
Flexible quantities for prototypes and production orders
OEM marking, grease and packaging options
Technical support for model selection and installation
Direct communication with the bearing manufacturer
RB3010 Frequently Asked Questions
What are the dimensions of the RB3010 bearing?
The RB3010 has a 30 mm bore diameter, 55 mm outer diameter and 10 mm width. Its compact section is suitable for precision mechanisms with restricted installation space.
What loads can an RB3010 cross roller bearing support?
RB3010 can support radial loads, axial loads in both directions and overturning moments simultaneously. The allowable operating load depends on the load combination, mounting rigidity, preload, speed and required service life.
Is RB3010 suitable for robot joints?
Yes. RB3010 is suitable for small robot joints, manipulators and precision rotary axes that require compact dimensions, high rigidity and accurate positioning. Final selection should be verified using the actual load and moment conditions.
Can LYDL supply RB3010UUCC0P4?
Yes. LYDL can manufacture double-sealed RB3010 bearings with controlled clearance or preload and P4 accuracy. P2 precision and other customized configurations are also available subject to technical confirmation.
Can RB3010 replace a THK cross roller ring?
LYDL can provide an RB3010 bearing with corresponding principal dimensions and specified performance requirements. Before replacement, the complete suffix, accuracy grade, clearance, sealing arrangement, mounting dimensions and operating conditions should be confirmed.
What information is required for an RB3010 quotation?
Please provide the complete model designation, quantity, required accuracy grade, clearance or preload, sealing requirement, rotational speed and application. A drawing or photograph of the existing bearing is helpful when confirming an interchangeable replacement.
Request an RB3010 Quotation
Contact LYDL for an RB3010 cross roller bearing quotation, technical drawing or application review. Please include your required quantity, accuracy grade, clearance or preload, sealing option and delivery destination so that we can recommend the appropriate configuration.
