The SX011860 crossed roller bearing is a large, high-capacity precision bearing with a 300 mm bore, 380 mm outside diameter and 38 mm width. Its wide central passage supports large rotary tables, scanners, antenna systems, optical platforms and heavy positioning fixtures.
The bearing provides a dynamic axial load rating of 245 kN, a static axial rating of 1,027 kN, a dynamic radial rating of 156 kN and a static radial rating of 504 kN. Its approximate mass is 12 kg.
An integrated inner ring and circumferentially split outer ring enable the SX011860 to support radial, axial and tilting-moment loads in one bearing position. LYDL can supply P5, P4, P2 or customized accuracy, with clearance or preload selected according to system rigidity and running torque.
For replacement orders, provide the complete original designation, suffix, drawing and operating conditions. Matching the 300 × 380 × 38 mm dimensions alone does not confirm equivalent preload, accuracy, coating or service performance.
SX011860 Crossed Roller Bearing Overview
The SX011860 crossed roller bearing is a large-aperture, high-capacity precision bearing with dimensions of 300 × 380 × 38 mm. Its approximate mass is 12 kg.
The bearing uses an integrated inner ring and a circumferentially split outer ring. Cylindrical rollers are arranged alternately at 90 degrees, enabling one bearing position to support radial loads, axial loads and substantial overturning moments.
Its 300 mm through-bore provides space for large hollow shafts, optical paths, scanner components, cable groups and rotary service connections. This makes it suitable for large equipment requiring both precision rotation and an unobstructed central passage.
Among the selected SX0118 series models, SX011860 provides the highest axial and radial load ratings. It is intended for applications where the capacity or 240 mm bore of SX011848 is no longer sufficient.
For other bore sizes and load capacities, view the complete LYDL SX crossed roller bearing series. Use a clear product photograph showing the integrated inner ring, split outer ring and large 300 mm bore. The product marking should display LYDL SX011860.
The listed ratings are catalogue reference values and should not be interpreted as the maximum permissible machine payload.
Final selection must consider radial and axial forces, load offset, overturning moment, acceleration, shock, speed, operating cycle, lubrication and required service life.
Load ratings from different manufacturers should not be combined in one calculation. Internal geometry, roller number, materials and calculation methods may differ even when the external dimensions are identical.
For additional guidance on bearing structures and combined-load selection, refer to the LYDL crossed roller bearing selection guide.
Why Choose the SX011860?
Large 300 mm Central Passage
The 300 mm through-bore can accommodate large hollow shafts, scanner openings, cable groups, optical paths, torque-motor components or rotary connections.
This allows functional components to pass through the center of rotation without requiring an additional external routing structure.
High Static Load Capacity
SX011860 provides a static axial rating of 1,027 kN and a static radial rating of 504 kN. These values provide substantial capacity for heavy fixtures and slowly rotating platforms.
Static ratings must still be evaluated together with contact safety, overturning moment and mounting-structure deformation.
Combined-Load Support
The crossed roller arrangement supports radial, axial and moment loads in one bearing position. This can reduce the axial length and complexity of the overall rotary assembly.
Precision Rotary Performance
Compared with many general-purpose structural bearings, SX011860 focuses on compact section, controlled running accuracy and positioning rigidity.
P5, P4, P2 and customized accuracy options allow the bearing to be matched to different machine-performance requirements.
Main Applications
Large Precision Rotary Tables
SX011860 can support heavy workholding, assembly and inspection platforms. The large bore provides space for drive shafts, cables, hydraulic lines or measuring equipment.
Selection should include the table, fixture, workpiece, acceleration and distance between the payload center of gravity and bearing center.
Radar and Antenna Positioning Systems
The bearing can support antenna and radar-positioning platforms requiring a large cable or rotary-union passage.
Wind loads, rapid direction changes, cable resistance, rain, moisture and temperature variation require additional engineering review.
Large Optical and Medical Scanners
The 300 mm aperture can accommodate scanning paths, lenses, detectors and other components positioned around the rotating axis.
Low-noise grease, controlled torque, cleanliness and traceability should be specified for optical or medical equipment.
Heavy Assembly and Test Fixtures
SX011860 can support indexing fixtures used for large-component assembly, transmission testing and industrial inspection.
Shock, reversing torque and emergency-stop loads should be included in addition to the normal operating load. Combine four realistic industrial application scenes with short English labels:
Precision Rotary Table
Radar Positioning
Medical Scanner
Heavy Test Fixture
Use consistent lighting and restrained industrial colors. Avoid unrealistic equipment structures or exaggerated futuristic details.
SX011860 should be selected when the 300 mm passage or its higher capacity is genuinely required.
SX011848 can reduce housing diameter, rotating mass and handling requirements when a 240 mm bore and 612 kN static axial rating are sufficient.
For applications requiring a different ring arrangement or a wider range of smaller bore sizes, compare the LYDL RB series crossed roller bearings.
SX011860 or a Slewing Bearing?
SX011860 and a slewing bearing can both support radial, axial and moment loads, but they are not automatically interchangeable.
SX011860 should be considered when rotational accuracy, compact cross-section and controlled running performance are priorities.
A slewing bearing may be more appropriate when the equipment requires integral mounting holes, gearing, seals or very large structural dimensions.
The selection should consider:
Required rotational accuracy
Radial, axial and moment loads
Need for integral mounting holes
Need for internal or external gearing
Sealing environment
Speed and operating cycle
Housing construction
Installation and maintenance method
The standard SX011860 does not contain integral mounting holes, seals or gear teeth.
Accuracy and System Performance
LYDL can supply SX011860 in P5, P4, P2 or customized accuracy classes.
Bearing accuracy should be selected according to the allowable runout and positioning error of the complete equipment.
Final system accuracy also depends on:
Shaft and housing geometry
Mounting-face flatness
Flange parallelism
Clamping deformation
Platform rigidity
Drive eccentricity
Encoder installation
Payload deflection
Thermal expansion
A P2 bearing installed in a flexible or inaccurate structure will not automatically produce P2 system rotation.
Internal Clearance and Preload
Internal clearance can reduce friction torque and sensitivity to mounting variation. It may be suitable for applications that do not require maximum angular rigidity.
Controlled preload can improve rigidity, reversal accuracy and settling time. It may be preferred for large inspection tables, scanners and precision antenna systems.
Excessive preload may increase starting torque, operating temperature and sensitivity to flange deformation. The drive system must provide sufficient torque under the selected preload and lubricant conditions.
For large platforms, specify permissible starting torque, running torque and torque variation when requesting a preloaded bearing.
Suffix and Designation Explanation
Suffixes may identify clearance, preload, coating, accuracy or design generation. Their meanings are manufacturer-specific.
Examples used in Schaeffler technical documentation include:
RL0: reduced internal clearance
VSP: defined preload
RR: Corrotect-coated configuration
A: may identify a particular design generation
The exact suffix must be confirmed using the original manufacturer’s catalogue or drawing.
An SX011860-A-VSP should not automatically be replaced by an unsuffixed SX011860. Removing the suffix may change rigidity, torque or operating performance.
Replacement and Interchangeability
SX011860 and LRC 30038 may be used as dimensional interchange references. Functional interchangeability requires further verification.
Compare:
Complete original designation and suffix
Bore, outside diameter and width
Dimensional tolerances
Accuracy and runout limits
Internal clearance or preload
Starting and running torque
Load-rating basis
Material and heat treatment
Lubricant
Coating or corrosion protection
Inspection and traceability requirements
LYDL can review the original label, product drawing, catalogue data or inspection report before confirming replacement feasibility.
Third-party trademarks are used only for technical identification and comparison. Their use does not imply authorization, affiliation or original-brand manufacture.
Mounting and Structural Design
The circumferentially split outer ring requires continuous and uniform retention. It should be clamped by a rigid housing cover or flange.
A reference mounting arrangement may use 24 × M16 flange screws. This does not mean the bearing itself contains 24 mounting holes.
The final screw quantity, size, strength class and tightening torque must be calculated for the actual structure and operating loads.
Mounting faces should be flat, parallel, clean and free from burrs. Uneven clamping or insufficient flange stiffness can distort the raceways.
Tighten screws gradually in a diagonal sequence. Rotate the bearing during tightening and monitor any change in starting or running torque.
Housing and flange deformation should be calculated using the same maximum-load cases applied during bearing selection.
Handling the 12 kg Bearing
SX011860 weighs approximately 12 kg and requires controlled handling.
Support the bearing evenly during lifting and installation. Do not lift it by only one section of the split outer ring.
Protect the bearing from impact, contamination and ring separation. Keep the bearing in its original protective packaging until the installation area is ready.
Do not strike the ring directly during fitting. Installation force should be applied uniformly to the appropriate ring.
Lubrication, Sealing and Corrosion Protection
The standard SX011860 is open and does not contain integral seals. External sealing is required where dust, coolant, water or outdoor contamination may reach the raceways.
Select grease according to speed, load, oscillation angle, temperature and maintenance interval. Excessive grease can increase running torque and heat.
Outdoor antenna systems may require enhanced moisture sealing and corrosion protection. Specify the environment, temperature range and expected exposure before ordering.
For optical or medical systems, state any low-noise, low-particle or lubricant-compatibility requirements.
LYDL Manufacturing and Quality Control
LYDL can manufacture SX011860 using GCr15 or GCr15SiMn bearing steel. Accuracy, preload, internal clearance, lubricant and marking can be configured according to customer requirements.
Manufacturing and inspection may include:
Raw-material verification
Precision turning
Heat treatment and cryogenic stabilization
Raceway grinding and superfinishing
Roller manufacturing and optical sorting
Precision dimensional measurement
Deep cleaning and demagnetization
Controlled preload assembly
Starting and running-torque testing
Radial and axial runout inspection
Final visual inspection
Laser marking
Rust prevention
Inspection items and acceptance limits should be agreed before production.
Inspection Documents and Export Packaging
Available documentation may include:
Material certificate
Hardness report
Dimensional inspection report
Radial and axial runout report
Starting or running-torque record
Clearance or preload record
Individual traceability information
Packaging photographs
Individual anti-rust protection, protective wrapping, shock-resistant material and reinforced export packaging can be supplied.
Additional moisture protection and lifting markings should be specified for sea freight, outdoor delivery or long-term storage. Use real inspection and packaging photographs. The bearing marking, individual box label and wooden-case information should consistently display SX011860.
These sources provide general engineering and comparison information. Final SX011860 selection should be based on the confirmed LYDL specification, operating conditions and approved drawing.
Information Required for an Accurate Quotation
Please provide:
Required quantity
Complete bearing designation and suffix
Required accuracy class
Clearance or preload requirement
Radial and axial loads
Tilting moment or payload offset
Maximum and continuous speed
Operating cycle
Operating temperature
Housing and shaft materials
Lubrication and sealing requirements
Corrosion-protection requirements
Inspection-document requirements
Delivery destination and required date
Frequently Asked Questions
1. What is the 300 mm bore mainly used for?
It can accommodate a large hollow shaft, scanner opening, optical path, cable bundle, rotary union or torque-motor components.
2. Can SX011860 directly replace a slewing bearing?
Not automatically. SX011860 emphasizes precision and compact cross-section, while many slewing bearings provide integral mounting holes, seals or gears.
3. Is the 1,027 kN static axial rating the permissible machine payload?
No. Permissible payload depends on load direction, center-of-gravity offset, overturning moment, shock, contact safety and mounting-structure deformation.
4. Why is flange stiffness especially important for SX011860?
Large forces and moments can deform an insufficiently rigid flange. This may cause uneven roller loading, increased torque, reduced accuracy and shorter bearing life.
5. Does the 24 × M16 reference mean the bearing has mounting holes?
No. It refers to a possible surrounding flange arrangement. The standard SX011860 does not have integrated mounting holes.
6. How should the 12 kg bearing be handled?
Support it evenly with clean lifting equipment or appropriate two-person handling. Do not lift or carry it by only one section of the split outer ring.
7. What additional protection is needed for an outdoor antenna system?
External sealing, moisture protection, suitable grease and corrosion control may be required. The expected temperature range and environmental exposure should be stated.
8. Which inspection records are recommended for a large precision rotary table?
Common requirements include dimensional inspection, radial and axial runout, rotational torque, preload condition, material certification and individual traceability.
Request an SX011860 Quotation
Send LYDL your complete SX011860 designation, quantity, accuracy class, preload or clearance and operating conditions.
You can contact LYDL for SX011860 pricing and technical support to request drawings, inspection documents, application review and export-delivery information.
Combine four realistic industrial application scenes with short English labels:
Use real inspection and packaging photographs. The bearing marking, individual box label and wooden-case information should consistently display SX011860.