LYDL Thin Section Angular Contact Ball Bearings Technical Parameters

Note: Kaydon® and Silverthin® part numbers are used for interchange reference only. LYDL manufactures compatible thin section angular contact ball bearings according to customer drawings, dimensions, load requirements and application conditions. Kaydon® and Silverthin® are registered trademarks of their respective owners.

Equal Section Thin Section Angular Contact Ball Bearings

Product Overview

LYDL Equal Section Thin Section Angular Contact Ball Bearings are precision thin section bearings designed for compact, lightweight, and high-accuracy rotary applications. This bearing series features a constant cross-section structure, which allows the bearing to maintain a compact radial section even when the bore diameter increases.

Compared with standard ball bearings, equal section thin section angular contact ball bearings can help reduce equipment weight, save installation space, and improve design flexibility. The angular contact raceway structure allows the bearing to support radial loads and axial loads in one direction. When used as a matched pair, it can support axial loads in both directions and provide higher rigidity for precision rotary systems.

This series is widely used in robotics, precision rotary tables, optical instruments, medical equipment, radar antennas, aerospace mechanisms, semiconductor equipment, measuring systems, and automation machinery.

LYDL manufactures compatible thin section angular contact ball bearings according to customer drawings, samples, application requirements, and interchange part numbers. Custom options are available for material, precision grade, clearance, preload, lubrication, packaging, and special working conditions.

Product Brief

1. Equal Section Thin Section Angular Contact Ball Bearings feature a constant cross-section angular contact ball bearing structure designed for compact, lightweight, and high-precision rotary applications.
2. Sizes: Bore Diameter: 25.4–1016 mm / 1–40 inch, suitable for precision rotary systems, lightweight mechanisms, robotic joints, optical equipment, and automation machinery.
3. Performance Advantages: Space-saving design; low weight; high axial stiffness; smooth rotation; low friction torque; high running accuracy; suitable for paired mounting arrangements.
4. Material: 52100, SUJ2, 100Cr6, 100CrMn6, GCr15SiMn, GCr15 Bearing Steel.
5. Applications: Robotics, precision rotary tables, optical instruments, medical equipment, radar antennas, aerospace mechanisms, semiconductor equipment, rotary encoders, measuring systems, and automation equipment.
6. Accuracy: P0, P6, P5, P4; customized precision, clearance, and preload are available according to drawings and application requirements.

Structural Features

Constant Cross-Section Design

The main feature of this series is the equal section structure. Within the same bearing series, the cross section remains nearly constant while the bore diameter increases. This helps engineers design larger shaft diameters without significantly increasing the bearing weight or installation space.

Angular Contact Raceway Structure

The angular contact raceway design enables the bearing to support radial load and axial load in one direction. Compared with radial contact thin section bearings, angular contact thin section bearings are more suitable for applications requiring axial stiffness and controlled preload.

Suitable for Matched Pair Arrangement

A single angular contact thin section bearing mainly supports axial load in one direction. For bidirectional axial loads, higher rigidity, or improved moment load resistance, two angular contact bearings can be used as a matched pair. Common mounting arrangements include back-to-back, face-to-face, and tandem configurations.

Lightweight and Space-Saving

Thin section angular contact ball bearings are ideal for compact rotary structures where weight reduction and space saving are important. They are suitable for lightweight equipment, precision mechanisms, robot joints, optical systems, and aerospace applications.

Low Friction and Smooth Rotation

With optimized raceway geometry, precision balls, and controlled internal clearance or preload, LYDL thin section angular contact bearings can provide smooth rotation, low friction torque, and stable running performance.

Custom Manufacturing Options

LYDL can customize thin section angular contact ball bearings according to application requirements, including dimensions, material, cage type, lubrication, precision grade, clearance, preload, packaging, and special marking.

Technical Parameters Table

The following table lists common LYDL equal section thin section angular contact ball bearing models, including bore diameter, outside diameter, width, weight, radial load rating, thrust load rating, limiting speed, and interchange references.

Recommended Table Title:
LYDL Equal Section Thin Section Angular Contact Ball Bearings Technical Parameters

Recommended Table Columns:
Model | d in | d mm | D in | D mm | B in | B mm | Weight kg | Radial Static Co N | Radial Dynamic Cr N | Thrust Static Co N | Thrust Dynamic Cr N | Limiting Speed RPM | Kaydon Equivalent | Silverthin Equivalent

Please insert the full technical parameter table here.

Typical Applications

LYDL equal section thin section angular contact ball bearings are used in precision equipment where compact structure, low weight, smooth rotation, and axial rigidity are required.

Typical applications include:

Robotics and robot joints
Precision rotary tables
Optical instruments
Medical imaging equipment
Radar and antenna systems
Aerospace mechanisms
Semiconductor equipment
Rotary encoders
Measuring instruments
Precision gimbals
Automation machinery
Lightweight rotary platforms
Inspection systems
Positioning systems

For equipment requiring higher stiffness, bidirectional axial load support, or improved moment load resistance, matched pair angular contact thin section bearings are usually recommended.

Selection Guide

Selecting the correct thin section angular contact ball bearing depends on load direction, installation space, rigidity requirement, speed, precision grade, lubrication method, and working environment.

Load Direction

Angular contact thin section bearings are suitable for applications that require radial load support and axial load capacity in one direction. If axial load exists in both directions, a matched pair should be considered.

Rigidity Requirement

For high-rigidity rotary systems, matched pair angular contact bearings are recommended. Back-to-back mounting usually provides higher moment stiffness, while face-to-face mounting can improve alignment tolerance in some applications.

Cross-Section Series

The same bore diameter may be available in different cross sections, such as A, B, C, D, F, and G series. Smaller cross sections are better for lightweight and compact designs, while larger cross sections usually provide higher load capacity and stiffness.

Precision Grade

For general industrial applications, standard precision may be sufficient. For robot joints, optical systems, measuring equipment, and precision rotary tables, P5 or P4 accuracy can be selected according to the required running accuracy and rotational stability.

Clearance and Preload

Clearance and preload directly affect bearing stiffness, friction torque, temperature rise, and service life. Excessive preload may increase torque and heat generation, while insufficient preload may reduce rigidity and positioning accuracy. LYDL can supply customized clearance or preload according to customer requirements.

Speed and Lubrication

For high-speed applications, lubrication, cage design, preload, installation accuracy, and heat dissipation should be carefully considered. Grease lubrication is commonly used for general precision equipment, while special lubrication solutions can be discussed for specific working conditions.

Required Information for Model Selection

To recommend the most suitable model, please provide the bearing model or drawing, bore diameter, outside diameter, width, load conditions, speed, precision grade, clearance or preload requirement, lubrication method, and application environment.

Interchange Reference

LYDL manufactures compatible thin section angular contact ball bearings according to drawings, samples, or interchange part numbers. The models in this series can be used as replacement reference for common thin section angular contact bearing series.

Common interchange references include:

KA Series Angular Contact Thin Section Bearings
KB Series Angular Contact Thin Section Bearings
KC Series Angular Contact Thin Section Bearings
KD Series Angular Contact Thin Section Bearings
KF Series Angular Contact Thin Section Bearings
KG Series Angular Contact Thin Section Bearings

Common model references include:

KA020AR0
KB040AR0
KC080AR0
KD120AR0
KD160AR0
KF200AR0
KG250AR0
KF300AR0
KG400AR0

Note: Kaydon® and Silverthin® part numbers are used for interchange reference only. LYDL manufactures compatible thin section angular contact ball bearings according to customer drawings, dimensions, load requirements, and application conditions. Kaydon® and Silverthin® are registered trademarks of their respective owners.

Quality Assurance

LYDL controls the quality of equal section thin section angular contact ball bearings through material inspection, precision machining, heat treatment, raceway grinding, dimensional measurement, clearance or preload control, assembly inspection, and final running tests.

Key inspection items can include:

Material inspection
Hardness inspection
Dimensional accuracy inspection
Raceway surface quality inspection
Roundness and runout inspection
Clearance or preload verification
Rotational torque inspection
Noise and vibration inspection
Appearance inspection
Anti-rust and packaging inspection

For precision applications, LYDL can provide P5 and P4 grade bearings with stricter dimensional control and improved running accuracy. Inspection reports can be provided according to customer requirements.

Manufacturing Process

LYDL follows a controlled manufacturing process to ensure stable quality and reliable bearing performance.

Typical manufacturing process:

Raw material inspection
Forging or ring blank preparation
Precision turning
Heat treatment and stabilization
Precision grinding
Raceway grinding
Raceway superfinishing
Cleaning and demagnetization
Ball and cage preparation
Bearing assembly
Clearance or preload adjustment
Lubrication
Running test
Final inspection
Anti-rust treatment
Packaging and shipment

Each process is controlled to help ensure smooth rotation, stable load performance, accurate dimensions, and reliable service life.

Installation & Maintenance

Correct installation is important for the performance and service life of thin section angular contact ball bearings. Improper installation, excessive fitting force, contamination, misalignment, or incorrect preload may affect bearing accuracy and cause abnormal torque, noise, or early failure.

Installation Recommendations

Keep the bearing, shaft, housing, and installation tools clean.
Check shaft and housing accuracy before installation.
Avoid direct impact on the bearing rings.
Apply force only to the ring being fitted.
Confirm mounting direction for angular contact bearings.
For matched pairs, confirm the arrangement before installation.
Avoid excessive preload during installation.
Tighten mounting components evenly when required.
Rotate the bearing slowly after installation to check smooth running.

Maintenance Recommendations

Use suitable lubrication according to speed, temperature, and working environment.
Avoid dust, metal chips, moisture, and other contamination.
Check bearing running condition regularly in precision equipment.
Avoid overloading and excessive impact load.
For long-term storage, keep the bearing sealed, dry, and protected from corrosion.

For precision rotary applications, installation accuracy and preload control are especially important. If the bearing is used in a matched pair or high-precision mechanism, please confirm the mounting method with LYDL before installation.

Packaging & Shipping

LYDL provides protective packaging suitable for domestic and export shipment. Bearings are treated with anti-rust protection and packed according to size, precision grade, shipping method, and customer requirements.

Packaging options include:

Anti-rust oil or anti-rust film
Plastic bag or vacuum packaging
Individual box packaging
Foam or shockproof protection
Export carton
Wooden case for large-size bearings
Neutral packaging
LYDL brand packaging
Customized label and marking

Shipping methods include:

Express delivery
Air freight
Sea freight
Railway shipment
Customer-designated forwarder

Customized packaging, private label, barcode label, model marking, and customer-required shipping marks are available.

FAQ

What is an equal section thin section angular contact ball bearing?

It is a precision thin section bearing with a constant cross-section design and angular contact raceway structure. It is used to save space, reduce weight, and support radial load together with axial load in one direction.

What is the difference between angular contact and radial contact thin section bearings?

Angular contact thin section bearings can support axial load in one direction in addition to radial load. Radial contact thin section bearings are mainly used for radial loads. For higher axial stiffness, angular contact type is usually preferred.

Can a single angular contact thin section bearing support axial load in both directions?

A single angular contact bearing mainly supports axial load in one direction. For axial loads in both directions, two bearings should be used as a matched pair.

Can LYDL provide matched pair thin section angular contact bearings?

Yes. LYDL can supply matched pair angular contact thin section bearings according to preload, mounting arrangement, precision grade, and application requirements.

What materials are available?

LYDL can manufacture this series using 52100, SUJ2, 100Cr6, 100CrMn6, GCr15SiMn, and GCr15 bearing steel according to customer requirements.

What precision grades are available?

Available precision grades include P0, P6, P5, and P4. Customized precision and running accuracy requirements can be discussed according to the application.

Can LYDL manufacture bearings according to Kaydon or Silverthin interchange part numbers?

Yes. LYDL can manufacture compatible thin section angular contact ball bearings according to drawings, samples, or interchange part numbers. These part numbers are used only as reference for dimensions and replacement selection.

What information is needed for quotation?

Please provide the bearing model, interchange part number, drawing, quantity, precision grade, clearance or preload requirement, material, lubrication requirement, and application conditions.

Request a Quote

Looking for equal section thin section angular contact ball bearings for robotics, precision rotary tables, optical equipment, medical devices, aerospace mechanisms, radar antennas, or automation machinery?

LYDL can provide standard and customized thin section angular contact ball bearings according to your drawings, samples, or interchange part numbers.

Please send us the following information for a fast quotation:

Bearing model or interchange part number
Required quantity
Drawing or installation dimensions
Precision grade
Material requirement
Clearance or preload requirement
Speed and load conditions
Lubrication requirement
Application environment
Packaging and marking requirements

Contact LYDL today to get technical support, model selection assistance, and a competitive quotation for equal section thin section angular contact ball bearings.