The RB15013 cross roller bearing is a thin-section precision bearing with a 150 mm bore, 180 mm outside diameter and 13 mm width. Its large bore and 15 mm radial cross-section make it suitable for compact robot joints, direct-drive axes, optical equipment and precision inspection systems.
RB15013 uses an integrated inner ring and split outer ring. Cylindrical rollers arranged alternately at 90 degrees allow one bearing to support radial loads, axial loads in both directions and overturning moments.
The bearing has a basic dynamic radial load rating of 27 kN, a basic static radial load rating of 53.5 kN and an approximate mass of 0.68 kg. LYDL can provide open or sealed versions, different clearance or preload conditions and P5, P4, P2 or customized accuracy.
Common configurations include RB15013, RB15013UU, RB15013UUCC0 and RB15013UUCC0P2. Complete suffixes, mounting dimensions, accuracy and running-torque requirements must be confirmed before replacement or production.
RB15013 Cross Roller Bearing Overview
The RB15013 cross roller bearing is a thin-section precision bearing with a 150 mm bore, 180 mm outside diameter and 13 mm width. Its approximate mass is only 0.68 kg.
The bearing combines an integrated inner ring with a circumferentially split outer ring. Cylindrical rollers are arranged alternately at 90 degrees between the precision-ground raceways.
This crossed arrangement allows one bearing to support radial loads, axial loads in both directions and overturning moments. The integrated inner ring makes RB15013 particularly suitable for applications requiring accurate inner-ring rotation.
With a radial cross-section of only 15 mm, RB15013 provides a large through-bore without requiring a bulky surrounding structure. Other dimensions and configurations are available through the LYDL RB series cross roller bearing range.LYDL RB15013 thin-section cross roller bearing with a 150 mm bore, 180 mm outside diameter and 13 mm width.
Mounting dimensions are catalogue references. Final shaft, housing, shoulder and chamfer dimensions must follow the approved LYDL drawing.
The load ratings are used for bearing selection and life calculations. They are not the maximum permissible radial, axial or moment loads of the complete machine.
Final selection should consider the actual load spectrum, moment arm, rotational speed, oscillation angle, shock, duty cycle, mounting rigidity, lubricant and required service life.
RB15013 Structure and Load Capability
Adjacent cylindrical rollers inside the RB15013 are arranged with their axes crossing at right angles. Spacer retainers separate the rollers and help reduce roller-to-roller friction.
Line contact between the rollers and raceways provides higher rigidity than a similarly sized ball-bearing arrangement. The crossed geometry enables RB15013 to carry:
Radial loads
Axial loads in both directions
Overturning moments
Combined radial, axial and moment loads
The outer ring is split to facilitate assembly of the rollers and spacer retainers. Its retaining screws or joining elements are normally intended to prevent ring separation during transport and installation.
These retaining elements should not be treated as structural mounting bolts. The housing and clamping flange must support the operating loads.
Why Choose the RB15013?
Large Bore with a 13 mm Width
RB15013 provides a 150 mm central opening while maintaining a bearing width of only 13 mm.
This is valuable when cables, optical components, pneumatic lines or a hollow drive shaft must pass through a compact rotary mechanism.
Low Mass for Dynamic Motion
The bearing weighs approximately 0.68 kg. Its low mass helps reduce rotating inertia in applications requiring frequent acceleration, deceleration or direction reversal.
High Rigidity in a Thin Section
The crossed roller arrangement provides radial, axial and moment-load support within one compact bearing.
This can reduce the number of bearings and the axial installation length of the complete mechanism.
Suitable for Precision Inner-Ring Rotation
The integrated inner ring provides a continuous raceway and stable rotating reference. RB15013 is commonly selected where the inner ring rotates and the outer ring remains clamped in the housing.
Flexible Sealing and Preload Options
Customers can select open or sealed configurations, positive clearance or controlled preload and different accuracy classes.
The final configuration should be based on contamination, rigidity, starting torque and positioning requirements.
Typical RB15013 Applications
Compact Robot Joints
RB15013 can support robot joints requiring a large cable passage and low rotating mass.
Reducer forces, arm extension, payload, acceleration and emergency-stop loads must be included in the bearing calculation.
Direct-Drive Rotary Axes
The 150 mm bore can accommodate motor components, encoders, slip rings or service lines.
Motor heat, rotor imbalance and available starting torque should be evaluated together with bearing preload.
Optical Inspection Equipment
The bearing can support camera, laser and optical inspection stages requiring smooth, repeatable rotation.
For these systems, bearing runout, mounting accuracy, encoder performance and fixture rigidity should be evaluated as one error budget.
Semiconductor and Electronics Automation
RB15013 can be used in wafer-handling, electronic inspection and automated positioning systems with limited installation space.
Clean-compatible lubricant and controlled packaging should be requested when particle generation or contamination is restricted.
Need an RB15013 Drawing or Quotation?
Bearing configuration can materially affect running torque, rigidity and installed accuracy. Contact LYDL for an RB15013 technical review if you need a drawing, P2 accuracy, controlled preload, replacement confirmation or an inspection report.
Please provide the complete designation, quantity, application and operating conditions. For replacement inquiries, include a photograph of the original marking or its drawing.
RB15013 is appropriate when a 150 mm bore, low mass and minimum axial width are more important than maximum load capacity.
The RB12025 cross roller bearing retains a 180 mm outside diameter but uses a smaller 120 mm bore and thicker 25 mm section. It provides significantly higher radial ratings.
The RB15025 cross roller bearing retains the 150 mm bore but increases the outside diameter to 210 mm and width to 25 mm. It should be considered when greater capacity and moment rigidity are required.
Common RB15013 Configurations and Suffixes
Suffix meanings vary between manufacturers. The complete designation should be included in every inquiry and purchase order.
DD: may indicate seals on both sides in another manufacturer’s system
E: may identify an open configuration in another brand system
Seal type and contact condition should be confirmed. Different seals can produce different starting torque and temperature.
Clearance and Preload Suffixes
CC0: commonly identifies controlled negative clearance or preload in the THK system
C0: a defined clearance category; it does not always mean zero clearance
C1: a manufacturer-specific positive-clearance category
C8: may identify negative clearance in an NSK designation
T1, C1 and C2: may be used in IKO clearance classifications
Clearance and preload affect moment rigidity, rotational accuracy, starting torque, running torque and heat generation.
Accuracy Suffixes
P6: accuracy class 6
P5: accuracy class 5
P4: accuracy class 4
P2: accuracy class 2
PE5, PE4 and PE2: THK-style accuracy combinations that require catalogue confirmation
A P2 designation should define the controlled surfaces, runout limits and inspection method. The suffix alone may be insufficient for a precision order.
Cross-Brand Reference and Interchangeability
RB15013 may appear under different brand-specific names and suffix systems.
Manufacturer or reference system
Possible designation
Important confirmation
LYDL
RB15013 / RB15013UUCC0P2
Approved LYDL drawing and inspection limits
THK
RB15013 / RB15013UU
Clearance, preload and accuracy suffixes
NSK reference
NRX15013DD or applicable NRXT reference
Exact catalogue generation, seals and clearance
Alternative manufacturers
CRB or proprietary 150×180×13 reference
Ring structure and performance data
Cross-brand references are provided for preliminary identification. They are not an unconditional guarantee of interchangeability.
Before approving a replacement, compare:
Complete designation and suffix
Inner- and outer-ring structure
Bore, outside diameter and width
Roller pitch circle and shoulder dimensions
Chamfer and lubrication-hole position
Dynamic and static load ratings
Internal clearance or preload
Accuracy class
Seal arrangement
Lubricant
Starting and running torque
Mounting and clamping method
For NRX15013DD replacement, the original drawing or product label should be reviewed before confirming that RB15013UUCC0P2 is functionally equivalent.
Accuracy and Installed Performance
LYDL can supply P5, P4, P2 or customized accuracy. The appropriate class should be selected from the actual system requirements.
Final installed accuracy also depends on:
Shaft roundness
Housing-seat geometry
Shoulder perpendicularity
Mounting-face flatness
Clamping-force uniformity
Drive eccentricity
Encoder accuracy
Thermal expansion
Fixture rigidity
A P2 bearing installed in an inaccurate or flexible housing will not automatically provide P2 system performance.
For high-precision orders, specify permissible radial runout, axial runout, starting torque and running torque.
Mounting Recommendations
The split outer ring requires continuous and uniform clamping. Use a rigid housing and cover flange.
Both mounting faces should be flat, parallel, clean and free from burrs. Local high points can distort the thin rings and increase rotational torque.
Tighten flange screws gradually in a diagonal sequence. Rotate the bearing during tightening and investigate any sudden torque increase.
Do not loosen or remove the outer-ring joining screws before the bearing has been positioned and retained according to the approved installation procedure.
Apply installation force to the appropriate ring. Do not transmit mounting force through the rollers.
Lubrication and Sealing
An open RB15013 requires suitable lubrication and external protection. RB15013UU includes seals on both sides, subject to the confirmed specification.
Sealed configurations offer additional protection against dust and grease leakage. They may also generate more starting and running torque than open versions.
Lubricant selection should consider:
Rotational speed
Oscillation angle
Combined load
Duty cycle
Operating temperature
Required running torque
Environmental contamination
Relubrication interval
Do not mix greases unless their base oils and thickeners are confirmed to be compatible.
LYDL Manufacturing and Quality Control
LYDL can manufacture RB15013 using GCr15, GCr15SiMn or equivalent 100Cr6 bearing steel. Accuracy, clearance, preload, sealing, grease and marking can be configured according to the order.
Production and inspection may include:
Raw-material and forging inspection
Precision turning
Heat treatment and cryogenic stabilization
Raceway grinding and superfinishing
Roller optical sorting
Precision dimensional measurement
Deep cleaning and demagnetization
Controlled preload assembly
Starting and running-torque testing
Radial and axial runout inspection
Final appearance and marking inspection
Anti-rust protection
Required measurements and acceptance limits should be agreed before production.
Inspection Documents and Packaging
Available documentation may include:
Material certificate
Hardness report
Dimensional inspection report
Radial and axial runout report
Clearance or preload record
Starting and running-torque record
Product traceability information
Packaging photographs
Individual anti-rust protection, vacuum packaging, shock-resistant foam, cartons and export wooden cases can be provided.
NSK – Bearing Cross-Reference Tool Reference for preliminary cross-brand identification. NSK states that cross-reference results do not guarantee complete compatibility.
Third-party trademarks and designations are used only for technical identification and comparison. Their use does not imply authorization, affiliation or original-brand manufacture.
Information Required for an Accurate Quotation
Please provide:
Required quantity
Complete model and suffix
Original manufacturer, if replacing another bearing
Open, U or UU sealing requirement
Clearance or preload requirement
Accuracy class
Radial and axial loads
Overturning moment or load offset
Rotational speed or oscillation cycle
Operating temperature
Required lubricant
Starting or running-torque limit
Inspection-document requirements
Delivery destination and required date
Frequently Asked Questions
1. Why does RB15013 have a large bore but weigh only 0.68 kg?
Its 150 mm bore is combined with a 180 mm outside diameter and only 13 mm width. This creates a thin 15 mm radial cross-section and relatively low ring mass.
2. Is RB15013 intended for heavy-load rotary tables?
It is better suited to compact, lightweight precision axes. RB15025 should be considered when substantially higher load capacity and moment rigidity are required.
3. What does RB15013UUCC0P2 mean?
It commonly describes an RB15013 with seals on both sides, controlled preload and P2 accuracy. Numerical preload, seal type and inspection limits must still be confirmed.
4. Can NRX15013DD be replaced by RB15013?
Potentially, because the reference may share the 150 × 180 × 13 mm envelope. The original drawing, suffix, seals, clearance, accuracy and load ratings must be checked before confirmation.
5. Should the inner ring or outer ring rotate?
The integrated inner ring is normally preferred for precision rotation. Outer-ring rotation requires a separate review of the split-ring clamping and housing structure.
6. Why can running torque increase after installation?
Common causes include excessive preload, tight fits, uneven outer-ring clamping, mounting-face error, unsuitable grease or seal resistance.
7. Does UU always mean a contact seal?
No. UU generally identifies seals on both sides, but contact type and material can vary between manufacturers. Confirm the actual sealing specification.
8. Which inspections are important for an RB15013 P2 order?
Critical checks include bore and outside diameter, bearing width, radial and axial runout, preload, starting and running torque, marking and traceability.
Request an RB15013 Quotation
Send LYDL your complete RB15013 designation, quantity, accuracy, preload or clearance and operating conditions.
LYDL can review drawings, suffix compatibility, P2 inspection requirements, manufacturing feasibility and export delivery before quotation.
