Metric Thin Section Angular Contact Ball Bearings | A-Type 8mm, 13mm, 20mm Series

Metric Thin Section Angular Contact Ball Bearings, also known as A-Type thin section ball bearings, are designed with an angular contact raceway structure to support radial loads and axial loads in one direction. Compared with C-Type radial contact thin section bearings, the A-Type structure provides better axial stiffness and more stable performance under combined radial and axial loading conditions. LYDL PA series metric thin section angular contact ball bearings are available in 8mm, 13mm, and 20mm cross-section series. They are suitable for compact mechanical systems where installation space, weight, rotational accuracy, load capacity, and rigidity must be carefully balanced. Luoyang Deeplink Technology Co.,Ltd. manufactures precision thin section bearings for industrial robots, medical equipment, optical inspection systems, semiconductor machinery, aerospace mechanisms, precision automation systems, rotary indexing mechanisms, and compact motion control equipment. Metric Thin Section Angular Contact Ball Bearings | A-Type 8mm, 13mm, 20mm Series

Product Overview

A-Type metric thin section angular contact ball bearings are designed for applications requiring compact structure and one-direction axial load support. Their thin section design helps reduce equipment weight and save installation space, while the angular contact structure improves axial rigidity and running stability. The PA series listed below includes 8mm, 13mm, and 20mm cross-section options. Each series provides different load capacity and rigidity levels, allowing engineers to select the most suitable bearing according to installation space, load direction, working speed, precision requirement, and application environment.

Main Structure Features

• A-Type angular contact raceway design: Suitable for radial loads and axial loads in one direction.
• Thin section structure: Helps reduce equipment weight and save radial installation space.
• Compact and lightweight design: Ideal for precision equipment with limited mounting space.
• High axial stiffness: More suitable than radial contact bearings when axial load exists in the working direction.
• Smooth rotation: Precision raceway geometry helps reduce friction and improve running stability.
• Multiple cross-section options: 8mm, 13mm, and 20mm series are available for different load and rigidity requirements.
• Equivalent model reference: LYDL PA series can be used as replacement references for selected KAYDON K-Series AR0 metric thin section angular contact ball bearings.
• Customization available: Precision grade, preload, clearance, lubrication, marking, packaging, and special application requirements can be customized.

Difference Between 8mm, 13mm and 20mm Series

Series	Structure Feature	Load & Rigidity Level	Recommended Application
8mm Series	Ultra-thin and lightweight structure	Lower load capacity, best space saving	Optical equipment, lightweight automation, compact instruments, robot end-effectors
13mm Series	Balanced cross-section design	Medium load capacity and better rigidity	Precision machinery, medical equipment, automation systems, rotary mechanisms
20mm Series	Stronger section and higher rigidity	Higher load capacity and stronger stiffness	Industrial robots, rotary platforms, aerospace mechanisms, heavy-duty precision assemblies

Metric Thin Section Angular Contact Ball Bearings Structural Features – 8mm Series

Metric Thin Section Angular Contact Ball Bearings Structural Features The 8mm A-Type series is designed for ultra-compact applications requiring reduced weight, thin cross section, smooth rotation, and angular contact load support. This series is suitable for equipment with limited radial space while still requiring radial load and one-direction axial load capability. It is commonly used in optical instruments, compact automation equipment, lightweight rotary mechanisms, medical devices, and robot end-effectors.

LYDL Type	Inner Diameter d (mm)	Outer Diameter D (mm)	Weight (kg)	Radial Static Co (kg)	Radial Dynamic Cr (kg)	Thrust Static Co (kg)	Thrust Dynamic Cr (kg)	KAYDON Equivalent
PA2508	25	41	0.06	372	272	1073	561	K02508AR0
PA5008	50	66	0.08	656	367	1894	819	K05008AR0
PA6008	60	76	0.09	787	408	2273	925	K06008AR0
PA7008	70	86	0.10	896	440	2588	1009	K07008AR0
PA8008	80	96	0.12	1006	470	2903	1090	K08008AR0
PA9008	90	106	0.13	1137	505	3282	1182	K09008AR0
PA10008	100	116	0.14	1246	533	3598	1257	K10008AR0
PA11008	110	126	0.15	1356	561	3914	1329	K11008AR0
PA12008	120	136	0.16	1465	587	4229	1400	K12008AR0
PA13008	130	146	0.17	1596	618	4608	1482	K13008AR0
PA14008	140	156	0.18	1706	643	4923	1549	K14008AR0
PA15008	150	166	0.20	1815	667	5239	1615	K15008AR0
PA16008	160	176	0.20	1946	696	5618	1691	K16008AR0
PA17008	170	186	0.21	2055	720	5933	1754	K17008AR0
PA18008	180	196	0.22	2165	742	6249	1816	K18008AR0
PA19008	190	206	0.23	2296	769	6628	1889	K19008AR0
PA20008	200	216	0.23	2405	791	6944	1948	K20008AR0
PA25008	250	266	0.28	2974	897	8585	2244	K25008AR0
PA30008	300	316	0.33	3564	999	10289	2532	K30008AR0
PA32008	320	336	0.36	3805	1039	10983	2645	K32008AR0
PA34008	340	356	0.38	4023	1073	11614	2745	K34008AR0
PA36008	360	376	0.40	4264	1110	12309	2854	K36008AR0

Metric Thin Section Angular Contact Ball Bearings Structural Features – 13mm Series

Metric Thin Section Angular Contact Ball Bearings Structural Features The 13mm A-Type series provides a balanced solution between compact design, load capacity, and rigidity. Compared with the 8mm series, it offers higher load ratings and stronger stiffness while still maintaining the advantages of a thin section bearing structure. It is recommended for precision automation equipment, rotary mechanisms, medical devices, measuring instruments, and compact machinery requiring stable rotation and moderate axial load support.

LYDL Type	Inner Diameter d (mm)	Outer Diameter D (mm)	Weight (kg)	Radial Static Co (kg)	Radial Dynamic Cr (kg)	Thrust Static Co (kg)	Thrust Dynamic Cr (kg)	KAYDON Equivalent
PA2513	25	51	0.13	616	554	1778	1075	K02513AR0
PA5013	50	76	0.20	1064	725	3070	1547	K05013AR0
PA6013	60	86	0.22	1232	782	3555	1706	K06013AR0
PA7013	70	96	0.25	1456	860	4201	1906	K07013AR0
PA8013	80	106	0.28	1623	913	4686	2050	K08013AR0
PA9013	90	116	0.31	1791	964	5171	2190	K09013AR0
PA10013	100	126	0.34	1959	1013	5656	2324	K10013AR0
PA11013	110	136	0.37	2127	1061	6141	2455	K11013AR0
PA12013	120	146	0.39	2295	1108	6625	2583	K12013AR0
PA13013	130	156	0.42	2519	1171	7272	2748	K13013AR0
PA14013	140	166	0.45	2687	1215	7757	2869	K14013AR0
PA15013	150	176	0.48	2855	1258	8241	2987	K15013AR0
PA16013	160	186	0.51	3023	1301	8726	3104	K16013AR0
PA17013	170	196	0.54	3191	1342	9211	3217	K17013AR0
PA18013	180	206	0.56	3359	1382	9696	3329	K18013AR0
PA19013	190	216	0.59	3527	1422	10181	3439	K19013AR0
PA20013	200	226	0.62	3750	1476	10827	3583	K20013AR0
PA25013	250	276	0.76	4590	1659	13251	4100	K25013AR0
PA30013	300	326	0.90	5486	1840	15837	4618	K30013AR0
PA32013	320	346	0.96	5822	1904	16806	4804	K32013AR0
PA34013	340	366	1.02	6213	1978	17937	5017	K34013AR0
PA36013	360	386	1.07	6550	2038	18907	5196	K36013AR0

Metric Thin Section Angular Contact Ball Bearings Structural Features – 20mm Series

Metric Thin Section Angular Contact Ball Bearings Structural Features The 20mm A-Type series is suitable for applications requiring higher stiffness, stronger load capacity, and improved support for combined radial and axial loads. Compared with the 8mm and 13mm series, the 20mm series provides a stronger cross section and better rigidity. It is recommended for precision rotary structures, industrial robots, heavy-duty automation, aerospace mechanisms, rotary platforms, and compact equipment where stronger bearing support is required.

LYDL Type	Inner Diameter d (mm)	Outer Diameter D (mm)	Weight (kg)	Radial Static Co (kg)	Radial Dynamic Cr (kg)	Thrust Static Co (kg)	Thrust Dynamic Cr (kg)	KAYDON Equivalent
PA2520	25	65	0.31	1134	1155	3272	2115	K02520AR0
PA5020	50	90	0.49	1889	1460	5454	2973	K05020AR0
PA6020	60	100	0.56	2141	1547	6181	3231	K06020AR0
PA7020	70	110	0.62	2393	1633	6908	3480	K07020AR0
PA8020	80	120	0.69	2645	1717	7635	3720	K08020AR0
PA9020	90	130	0.77	3023	1851	8726	4067	K09020AR0
PA10020	100	140	0.84	3275	1929	9453	4290	K10020AR0
PA11020	110	150	0.91	3527	2005	10181	4507	K11020AR0
PA12020	120	160	0.97	3778	2080	10908	4719	K12020AR0
PA13020	130	170	1.04	4030	2154	11635	4927	K13020AR0
PA14020	140	180	1.11	4282	2226	12362	5130	K14020AR0
PA15020	150	190	1.19	4660	2339	13453	5427	K15020AR0
PA16020	160	200	1.26	4912	2407	14180	5621	K16020AR0
PA17020	170	210	1.32	5146	2474	14907	5811	K17020AR0
PA18020	180	220	1.39	5416	2540	15634	5999	K18020AR0
PA19020	190	230	1.46	5668	2605	16361	6183	K19020AR0
PA20020	200	240	1.54	6045	2706	17452	6455	K20020AR0
PA25020	250	290	1.89	7431	3041	21452	7408	K25020AR0
PA30020	300	340	2.23	8691	3317	25088	8222	K30020AR0
PA32020	320	360	2.37	9321	3454	26906	8615	K32020AR0
PA34020	340	380	2.51	9824	3556	28360	8923	K34020AR0
PA36020	360	400	2.66	10454	3685	30178	9300	K36020AR0

Applications

LYDL Metric Thin Section Angular Contact Ball Bearings are widely used in precision equipment where compact size, low weight, stable rotation, and axial-radial load support are required. Typical applications include:

• Industrial robot joints and robot end-effectors
• Precision rotary tables and indexing mechanisms
• Medical imaging equipment and surgical devices
• Optical inspection systems and measuring instruments
• Semiconductor manufacturing equipment
• Aerospace and defense mechanisms
• Packaging machinery and automation systems
• Camera gimbals and compact rotary assemblies
• Radar systems and precision tracking devices
• Lightweight mechanical transmission systems

Selection Guide

Choose the 8mm Series when the design requires the lightest structure and the smallest radial section. It is suitable for compact equipment, light-duty precision mechanisms, optical systems, medical devices, and robot end tools. Choose the 13mm Series when the equipment requires a balanced solution between compact size, load capacity, and rigidity. It is suitable for most precision automation, measuring instruments, medical equipment, and rotary transmission applications. Choose the 20mm Series when higher load capacity and stronger rigidity are required. It is suitable for industrial robots, aerospace mechanisms, heavier rotary structures, precision platforms, and equipment with higher stiffness requirements.

A-Type vs C-Type vs X-Type Thin Section Bearings

Type	Bearing Structure	Load Direction	Recommended Use
A-Type Angular Contact	Angular contact raceway design	Radial load + one-direction axial load	Applications requiring axial stiffness and combined load support
C-Type Radial Contact	Radial contact raceway design	Mainly radial load and light axial load	General rotary applications and low axial load mechanisms
X-Type Four-Point Contact	Four-point contact raceway design	Radial load + axial load in both directions + moment load	Compact rotary systems requiring multi-direction load support

Why Choose LYDL Metric Thin Section Angular Contact Ball Bearings?

Luoyang Deeplink Technology Co.,Ltd. focuses on precision bearing manufacturing and customized bearing solutions. LYDL can provide metric thin section angular contact ball bearings for customers who need compact structure, stable rotation, equivalent model replacement, and reliable technical support. Our advantages include:

• Wide metric thin section bearing model range
• 8mm, 13mm, and 20mm cross-section options
• Equivalent replacement support for selected international models
• Custom precision, preload, clearance, lubrication, marking, and packaging
• Technical support for model selection and application matching
• Suitable for robot, medical, semiconductor, aerospace, and precision automation applications

Manufacturing and Customization

LYDL can provide metric thin section angular contact ball bearings with customized precision grade, clearance, preload, lubrication, sealing, surface treatment, marking, and packaging. For special applications, customers may provide drawings, working conditions, load requirements, speed, installation dimensions, accuracy grade, and equivalent model numbers for selection support. Available customization options include:

• Precision grade selection
• Customized preload and clearance
• Grease or oil lubrication options
• Low-noise and low-friction performance requirements
• Special marking and private label packaging
• Equivalent replacement for selected international bearing models
• Drawing-based non-standard bearing production
• Sample supply and batch production support

FAQ

What is a Metric Thin Section Angular Contact Ball Bearing?

A Metric Thin Section Angular Contact Ball Bearing is a precision thin section ball bearing with angular contact raceway geometry. It is used when the bearing must support radial load and axial load in one direction while maintaining a compact and lightweight structure.

What does A-Type mean in thin section bearings?

A-Type refers to angular contact thin section ball bearings. This structure is suitable for applications with combined radial load and one-direction axial load requirements.

What is the difference between 8mm, 13mm and 20mm series?

The 8mm series is thinner and lighter, the 13mm series provides a balanced design between compact size and load capacity, and the 20mm series offers higher rigidity and stronger load performance.

Can LYDL provide bearings equivalent to KAYDON K-Series AR0 models?

Yes. The PA series listed above includes equivalent references to selected KAYDON K-Series AR0 models for cross-reference and replacement selection. These equivalent model references are used to help customers compare dimensions and select suitable replacement bearings.

How should I choose the right A-Type thin section bearing?

Please provide the required bore diameter, outer diameter, installation space, load direction, axial load, radial load, speed, accuracy requirement, and working environment. LYDL can help recommend a suitable A-Type, C-Type, or X-Type thin section bearing solution.

Can the bearings be customized?

Yes. LYDL can customize precision grade, clearance, preload, lubrication, marking, packaging, and special technical requirements according to customer drawings and application conditions.

Contact LYDL

For Metric Thin Section Angular Contact Ball Bearings, A-Type thin section bearings, KAYDON equivalent thin section bearing replacement, or customized precision bearing solutions, please contact Luoyang Deeplink Technology Co.,Ltd. for technical selection support, drawings, quotation, and sample availability. Sales Manager: Galen Email: sales@luoyangdeeplink.com Phone / WhatsApp / WeChat: +86-18037003779 Address: No.6, Gang ‘a Road, Yiyang County, Luoyang City, Henan Province Company: Luoyang Deeplink Technology Co.,Ltd. Website: www.lydl-bearing.com