The RB8016 cross roller bearing features an 80 mm bore, 120 mm outside diameter and 16 mm width. Its crossed cylindrical roller arrangement supports radial loads, axial loads in both directions and overturning moments within a compact bearing envelope.
With a split outer ring and integrated inner ring, RB8016 is suitable for precision rotary applications requiring high rigidity, stable running accuracy and increased load capacity compared with thinner 80 mm bore models. Typical applications include industrial robot joints, CNC rotary tables, indexing mechanisms, inspection equipment and automated positioning systems.
Available precision, clearance, preload, sealing and lubrication configurations can be confirmed according to the operating conditions and installation drawing.
RB8016 Cross Roller Bearing Overview
The RB8016 cross roller bearing is a precision rotary bearing with an 80 mm bore, 120 mm outside diameter and 16 mm width. It combines a relatively large through-bore with higher rigidity and load capacity than narrower 80 mm bore alternatives.
Its cylindrical rollers are arranged alternately at 90 degrees between the inner and outer raceways. This crossed arrangement enables one compact bearing to support radial loads, axial loads in both directions and overturning moment loads.
The RB structure uses an integrated inner ring and a split outer ring. It is commonly selected where accurate inner-ring rotation, compact installation and stable moment rigidity are required.
Explore additional sizes in our RB Series Cross Roller Bearings range.
GCr15, GCr15SiMn or 100Cr6, subject to specification
*The shoulder dimensions above follow the current LYDL RB-series catalogue reference. Final housing and shaft geometry must follow the approved LYDL drawing supplied with the quotation or order. Do not use another manufacturer’s shoulder dimensions without dimensional verification.
The basic load ratings are reference values used for bearing selection and life calculations. They are not maximum permissible application loads. Combined radial, axial and moment loads must be converted into the appropriate equivalent load, with suitable life and static safety factors.
Design and Operating Principle
The raceways and cylindrical rollers of the RB8016 are arranged so that adjacent rollers cross at right angles. The line contact between the rollers and raceways provides high stiffness with relatively small elastic deformation under load.
This internal geometry enables the bearing to carry:
Radial loads
Axial loads in both directions
Overturning moment loads
Combined radial, axial and moment loads
The split outer ring facilitates bearing assembly, while the integrated inner ring supports accurate inner-ring rotation. Retaining screws or fasteners fitted to the split outer ring are generally intended to prevent separation during handling and installation. They must not be treated as structural mounting bolts unless specifically stated in the approved drawing.
Key Advantages of RB8016
Higher Load Capacity Than RB8013
Although RB8013 and RB8016 both have an 80 mm bore, RB8016 has a larger 120 mm outside diameter and 16 mm width. Its 30.1 kN dynamic radial rating and 42.1 kN static radial rating provide substantially greater load capacity than the thinner RB8013.
High Moment Rigidity
The crossed roller arrangement provides resistance to tilting moments, making the bearing suitable for precision mechanisms where angular deflection must be controlled.
Compact Combined-Load Support
One RB8016 bearing can perform functions that might otherwise require multiple conventional bearings, helping reduce the axial space and complexity of the surrounding assembly.
Large Through-Bore
The 80 mm bore provides space for cables, drive shafts, pneumatic lines, optical components or other machine elements passing through the rotating axis.
Configurable Precision
Accuracy, clearance, preload, sealing and lubrication can be specified according to the positioning requirement, running torque, speed and working environment.
Typical RB8016 Applications
RB8016 is commonly considered for:
Industrial robot joints and rotary axes
Robot positioners and welding manipulators
CNC rotary tables
Machine-tool indexing mechanisms
Precision inspection equipment
Optical measuring systems
Semiconductor handling equipment
Medical and laboratory equipment
Automated assembly systems
Compact rotary actuators
Direct-drive positioning mechanisms
Final selection should consider the complete load spectrum, overturning moment, duty cycle, speed, required life, mounting rigidity, temperature, lubrication and allowable running torque.
Adding a suffix guide is useful for international buyers, but suffixes are not universally standardized. THK, IKO, NSK and other manufacturers use different codes for seals, clearance, preload and accuracy.
The following descriptions are procurement and enquiry references. The final LYDL order designation must be confirmed in the quotation.
Both-side seals with controlled negative clearance or preload
Preload range and running torque
RB8016UUC1
Both-side seals with specified C1 clearance
Manufacturer-specific clearance value
RB8016UUP5
Both-side seals with P5 accuracy requirement
Inspection standard and controlled surfaces
RB8016UUP4
Both-side seals with P4 accuracy requirement
Runout and dimensional tolerances
RB8016UUCC0P4
Both-side seals, controlled preload and P4 accuracy
Complete approved specification
RB8016UUCC0P2
Both-side seals, controlled preload and P2 accuracy
Application review and manufacturing availability
Seal Suffixes
No suffix: Normally indicates an open configuration, but this must be confirmed.
U: Commonly indicates one-side sealing. The required side should be stated on the drawing or purchase order.
UU: Commonly indicates seals fitted on both sides.
DD: Used in the NSK NRXT system for seals on both sides.
E: Used in the NSK NRXT system for an open bearing without seals.
Clearance and Preload Suffixes
CC0: Used in the THK designation system for a controlled negative-clearance or preload condition.
C0: A defined clearance class. In the THK system, C0 is described as a positive-clearance category; it should not automatically be interpreted as “zero clearance.”
C1: A manufacturer-specific positive-clearance class.
C8: Used in the NSK NRXT system for negative clearance.
T1, C1 and C2: Clearance classifications found in the IKO crossed roller bearing system. Numerical limits depend on the applicable series and catalogue.
Clearance and preload have a direct influence on rigidity, running torque, heat generation and rotational behaviour. The suffix alone is not sufficient for precision procurement; the required numerical range should be included in the technical agreement.
Accuracy Suffixes
P6: Accuracy class 6
P5: Accuracy class 5
P4: Accuracy class 4
P2: Accuracy class 2
PE5, PE4 or PE2: THK designations combining rotational and dimensional accuracy requirements
Higher accuracy does not automatically improve every application. The selected grade should correspond to the actual runout, positioning and mounting requirements.
Cross-Brand Model Reference
The following model numbers may have similar nominal boundary dimensions and can be used for preliminary identification:
Manufacturer System
Reference Designation
Notes
THK
RB8016 / RB8016UU
RB type with split outer ring
IKO
CRB8016 / CRB8016UU
Full-complement standard type
IKO
CRBC8016 / CRBC8016UU
Cage-type standard configuration
NSK
NRXT 08016DD
Seals on both sides
NSK
NRXT 08016E
Open configuration without seals
These references do not guarantee interchangeability. Internal structure, roller complement, shoulder dimensions, load ratings, accuracy, preload, seal arrangement and lubrication may differ even when the nominal 80 × 120 × 16 mm boundary dimensions are the same.
Before replacing another brand, please provide the complete model number, suffixes, drawing, operating conditions and required inspection standard.
Material, Sealing and Lubrication
Depending on the confirmed specification, LYDL can discuss bearing-steel options including GCr15, GCr15SiMn and 100Cr6.
Open bearings require an effective external sealing system and suitable lubrication. Sealed configurations provide additional protection against dust ingress and grease leakage but may produce higher running torque.
Lubricant selection should consider:
Rotational speed
Applied load
Duty cycle
Operating temperature
Cleanroom or vacuum requirements
Starting and running torque
Relubrication interval
Compatibility with surrounding materials
Do not mix greases with unknown base oils or thickener compatibility.
Inspection and Quality Documentation
Inspection requirements should be agreed before production. Depending on the order specification, the inspection scope may include:
Bore and outside-diameter measurement
Bearing width inspection
Dimensional and rotational runout
Radial clearance or preload verification
Running torque inspection
Rotation smoothness
Raceway and surface-condition inspection
Hardness verification
Appearance and cleanliness inspection
Final packaging inspection
Additional documentation or inspection records should be requested at the quotation stage.
Installation Recommendations
To preserve the accuracy and service life of RB8016:
Clean the bearing, shaft, housing, flange and mounting surfaces before installation.
Remove burrs, contamination and raised edges from all contact surfaces.
Confirm shaft and housing tolerances against the approved drawing.
Support the inner and outer rings correctly during assembly.
Never transmit installation force through the rollers.
Do not strike the bearing directly with a hammer.
Tighten flange bolts gradually in a diagonal sequence.
Apply uniform clamping force around the ring.
Check running torque and rotational smoothness after mounting.
Protect open bearings from contamination and lubricant loss.
Avoid separating the split outer ring unless the approved procedure specifically requires it.
Recheck runout after the complete rotating assembly has been installed.
Housing rigidity and flange deformation can influence the final moment rigidity and running accuracy. Bearing performance must therefore be evaluated as part of the complete assembly rather than as an isolated component.
Why Source RB8016 From LYDL?
LYDL supplies precision bearings for robotics, machine tools, automation systems, measuring equipment and other industrial applications. Luoyang Deeplink Technology Co., Ltd. supports standard and customized bearing requirements with production, assembly, inspection, packaging and export services.
Customers can submit the following information for technical review:
Required model and quantity
Complete suffix or existing bearing designation
Shaft and housing drawing
Radial, axial and moment loads
Speed and duty cycle
Required accuracy
Clearance or preload requirement
Sealing and lubrication requirements
Operating temperature and environment
Inspection or documentation requirements
RB8016 Frequently Asked Questions
What are the dimensions of RB8016?
RB8016 has an 80 mm bore, 120 mm outside diameter and 16 mm width.
What are the RB8016 load ratings?
Its basic dynamic radial load rating is 30.1 kN, and its basic static radial load rating is 42.1 kN. These ratings are reference values for bearing calculations, not direct maximum allowable application loads.
What is the difference between RB8013 and RB8016?
Both models have an 80 mm bore. RB8013 measures 80 × 110 × 13 mm, while RB8016 measures 80 × 120 × 16 mm. RB8016 provides greater dynamic and static load capacity but requires more installation space and has a higher mass.
What does RB8016UU mean?
UU commonly indicates seals fitted on both sides. Because suffix systems vary between suppliers, the sealing specification should be confirmed in the quotation.
What does RB8016UUCC0P4 mean?
It is commonly interpreted as an RB8016 bearing with seals on both sides, controlled negative clearance or preload, and P4 rotational accuracy. The actual preload, torque and inspection limits must be agreed before ordering.
Is RB8016 interchangeable with CRB8016?
The models may share the same nominal boundary dimensions, but the internal structure, roller complement, load ratings, clearance and mounting dimensions may differ. A drawing and complete suffix comparison are required.
Is RB8016 interchangeable with NRXT08016DD?
NRXT 08016DD is an NSK designation for a bearing with an 80 mm bore, 16 mm width and seals on both sides. Nominal dimensions alone do not guarantee interchangeability. Verify the complete drawing, ratings, preload, accuracy and mounting arrangement.
How can I request an RB8016 price?
Send the quantity, precision grade, clearance or preload, seal arrangement, lubrication requirement, destination and required documentation. These factors can affect pricing and delivery time.
THK, IKO, NSK and their respective product designations are trademarks or identifiers of their respective owners. They are mentioned only for technical identification and preliminary dimensional comparison. LYDL and Luoyang Deeplink Technology Co., Ltd. are independent and are not affiliated with, authorized by or endorsed by these manufacturers.
Final product specifications, interchangeability, load calculations and mounting dimensions must be confirmed using the approved LYDL drawing and the customer’s actual operating conditions.
