LYDL Equal Section Thin Section Radial Contact Ball Bearings Technical Parameters

Model	d (in)	d (mm)	D (in)	D (mm)	B (in)	B (mm)	Weight (kg)	Radial Static Co (N)	Radial Dynamic Cr (N)	Limiting Speed (RPM)	Kaydon Equivalent	Silverthin Equivalent
LYDL-AA10	1.00	25.400	1.3750	34.925	0.1875	4.763	0.014	1,290	836	16,840	KAA10CL0	SAA10CL0
LYDL-AA15	1.50	38.100	1.8750	47.625	0.1875	4.763	0.018	1,779	1,001	11,850	KAA15CL0	SAA15CL0
LYDL-A020	2.00	50.800	2.5000	63.500	0.2500	6.350	0.045	3,025	1,748	8,890	KA020CP0	SA020CP0
LYDL-B020	2.00	50.800	2.6250	66.675	0.3125	7.938	0.073	4,137	2,567	8,650	KB020CP0	SB020CP0
LYDL-A025	2.50	63.500	3.0000	76.200	0.2500	6.350	0.059	3,692	1,966	7,270	KA025CP0	SA025CP0
LYDL-B025	2.50	63.500	3.1250	79.375	0.3125	7.938	0.091	5,071	2,865	7,110	KB025CP0	SB025CP0
LYDL-A030	3.00	76.200	3.5000	88.900	0.2500	6.350	0.068	4,404	2,166	6,150	KA030CP0	SA030CP0
LYDL-B030	3.00	76.200	3.6250	92.075	0.3125	7.938	0.109	5,961	3,145	6,040	KB030CP0	SB030CP0
LYDL-A035	3.50	88.900	4.0000	101.600	0.2500	6.350	0.082	5,071	2,358	5,330	KA035CP0	SA035CP0
LYDL-B035	3.50	88.900	4.1250	104.775	0.3125	7.938	0.122	6,850	3,412	5,250	KB035CP0	SB035CP0
LYDL-A040	4.00	101.600	4.5000	114.300	0.2500	6.350	0.086	5,738	2,540	4,710	KA040CP0	SA040CP0
LYDL-B040	4.00	101.600	4.6250	117.475	0.3125	7.938	0.136	7,784	3,670	4,640	KB040CP0	SB040CP0
LYDL-C040	4.00	101.600	4.7500	120.650	0.3750	9.525	0.204	9,341	4,773	4,570	KC040CP0	SC040CP0
LYDL-D040	4.00	101.600	5.0000	127.000	0.5000	12.700	0.354	13,701	7,807	4,440	KD040CP0	SD040CP0
LYDL-F040	4.00	101.600	5.5000	139.700	0.7500	19.050	0.862	23,842	15,831	4,210	KF040CP0	SF040CP0
LYDL-G040	4.00	101.600	6.0000	152.400	1.0000	25.400	1.633	36,520	27,201	4,000	KG040CP0	SG040CP0
LYDL-A042	4.25	107.950	4.7500	120.650	0.2500	6.350	0.091	6,094	2,629	4,440	KA042CP0	SA042CP0
LYDL-B042	4.25	107.950	4.8750	123.825	0.3125	7.938	0.141	8,140	3,763	4,380	KB042CP0	SB042CP0
LYDL-C042	4.25	107.950	5.0000	127.000	0.3750	9.525	0.213	9,875	4,929	4,320	KC042CP0	SC042CP0
LYDL-D042	4.25	107.950	5.2500	133.350	0.5000	12.700	0.376	14,190	7,949	4,210	KD042CP0	SD042CP0
LYDL-F042	4.25	107.950	5.7500	146.050	0.7500	19.050	0.907	25,088	16,258	4,000	KF042CP0	SF042CP0
LYDL-G042	4.25	107.950	6.2500	158.750	1.0000	25.400	1.724	36,520	26,961	3,810	KG042CP0	SG042CP0
LYDL-A045	4.50	114.300	5.0000	127.000	0.2500	6.350	0.100	6,405	2,713	4,210	KA045CP0	SA045CP0
LYDL-B045	4.50	114.300	5.1250	130.175	0.3125	7.938	0.150	8,674	3,914	4,160	KB045CP0	SB045CP0
LYDL-C045	4.50	114.300	5.2500	133.350	0.3750	9.525	0.218	10,409	5,084	4,100	KC045CP0	SC045CP0
LYDL-D045	4.50	114.300	5.5000	139.700	0.5000	12.700	0.399	15,213	8,278	4,000	KD045CP0	SD045CP0
LYDL-F045	4.50	114.300	6.0000	152.400	0.7500	19.050	0.953	26,378	16,681	3,810	KF045CP0	SF045CP0
LYDL-G045	4.50	114.300	6.5000	165.100	1.0000	25.400	1.814	38,966	27,921	3,640	KG045CP0	SG045CP0
LYDL-A047	4.75	120.650	5.2500	133.350	0.2500	6.350	0.104	6,761	2,798	4,000	KA047CP0	SA047CP0
LYDL-B047	4.75	120.650	5.3750	136.525	0.3125	7.938	0.154	9,030	4,008	3,950	KB047CP0	SB047CP0
LYDL-C047	4.75	120.650	5.5000	139.700	0.3750	9.525	0.227	10,943	5,231	3,900	KC047CP0	SC047CP0
LYDL-D047	4.75	120.650	5.7500	146.050	0.5000	12.700	0.426	15,702	8,416	3,810	KD047CP0	SD047CP0
LYDL-F047	4.75	120.650	6.2500	158.750	0.7500	19.050	0.998	27,623	17,095	3,640	KF047CP0	SF047CP0
LYDL-G047	4.75	120.650	6.7500	171.450	1.0000	25.400	1.860	41,368	28,856	3,480	KG047CP0	SG047CP0
LYDL-A050	5.00	127.000	5.5000	139.700	0.2500	6.350	0.109	7,073	2,882	3,810	KA050CP0	SA050CP0
LYDL-B050	5.00	127.000	5.6250	142.875	0.3125	7.938	0.172	9,564	4,150	3,760	KB050CP0	SB050CP0
LYDL-C050	5.00	127.000	5.7500	146.050	0.3750	9.525	0.263	11,521	5,378	3,720	KC050CP0	SC050CP0
LYDL-D050	5.00	127.000	6.0000	152.400	0.5000	12.700	0.454	16,725	8,736	3,640	KD050CP0	SD050CP0
LYDL-F050	5.00	127.000	6.5000	165.100	0.7500	19.050	1.043	28,869	17,508	3,480	KF050CP0	SF050CP0
LYDL-G050	5.00	127.000	7.0000	177.800	1.0000	25.400	1.950	43,815	29,763	3,330	KG050CP0	SG050CP0
LYDL-A055	5.50	139.700	6.0000	152.400	0.2500	6.350	0.113	7,784	3,047	3,480	KA055CP0	SA055CP0
LYDL-B055	5.50	139.700	6.1250	155.575	0.3125	7.938	0.186	10,498	4,377	3,440	KB055CP0	SB055CP0
LYDL-C055	5.50	139.700	6.2500	158.750	0.3750	9.525	0.268	12,588	5,667	3,400	KC055CP0	SC055CP0
LYDL-D055	5.50	139.700	6.5000	165.100	0.5000	12.700	0.481	18,238	9,177	3,330	KD055CP0	SD055CP0
LYDL-F055	5.50	139.700	7.0000	177.800	0.7500	19.050	1.134	31,360	18,309	3,200	KF055CP0	SF055CP0
LYDL-G055	5.50	139.700	7.5000	190.500	1.0000	25.400	2.132	46,262	30,470	3,080	KG055CP0	SG055CP0
LYDL-A060	6.00	152.400	6.5000	165.100	0.2500	6.350	0.127	8,452	3,203	3,200	KA060CP0	SA060CP0
LYDL-B060	6.00	152.400	6.6250	168.275	0.3125	7.938	0.200	11,387	4,599	3,170	KB060CP0	SB060CP0
LYDL-C060	6.00	152.400	6.7500	171.450	0.3750	9.525	0.286	13,656	5,947	3,140	KC060CP0	SC060CP0
LYDL-D060	6.00	152.400	7.0000	177.800	0.5000	12.700	0.526	19,795	9,608	3,080	KD060CP0	SD060CP0
LYDL-F060	6.00	152.400	7.5000	190.500	0.7500	19.050	1.225	33,895	19,087	2,960	KF060CP0	SF060CP0
LYDL-G060	6.00	152.400	8.0000	203.200	1.0000	25.400	2.313	51,110	32,210	2,860	KG060CP0	SG060CP0
LYDL-A065	6.50	165.100	7.0000	177.800	0.2500	6.350	0.136	9,119	3,354	2,960	KA065CP0	SA065CP0
LYDL-B065	6.50	165.100	7.1250	180.975	0.3125	7.938	0.213	12,277	4,813	2,940	KB065CP0	SB065CP0
LYDL-C065	6.50	165.100	7.2500	184.150	0.3750	9.525	0.308	14,724	6,214	2,910	KC065CP0	SC065CP0
LYDL-D065	6.50	165.100	7.5000	190.500	0.5000	12.700	0.553	21,307	10,026	2,860	KD065CP0	SD065CP0
LYDL-F065	6.50	165.100	8.0000	203.200	0.7500	19.050	1.315	36,386	19,844	2,760	KF065CP0	SF065CP0
LYDL-G065	6.50	165.100	8.5000	215.900	1.0000	25.400	2.449	53,557	32,886	2,670	KG065CP0	SG065CP0
LYDL-A070	7.00	177.800	7.5000	190.500	0.2500	6.350	0.141	9,786	3,501	2,760	KA070CP0	SA070CP0
LYDL-B070	7.00	177.800	7.6250	193.675	0.3125	7.938	0.227	13,211	5,022	2,740	KB070CP0	SB070CP0
LYDL-C070	7.00	177.800	7.7500	196.850	0.3750	9.525	0.331	15,791	6,481	2,710	KC070CP0	SC070CP0
LYDL-D070	7.00	177.800	8.0000	203.200	0.5000	12.700	0.594	22,819	10,431	2,670	KD070CP0	SD070CP0
LYDL-F070	7.00	177.800	8.5000	215.900	0.7500	19.050	1.451	38,922	20,586	2,580	KF070CP0	SF070CP0
LYDL-G070	7.00	177.800	9.0000	228.600	1.0000	25.400	2.631	58,405	34,536	2,500	KG070CP0	SG070CP0
LYDL-A075	7.50	190.500	8.0000	203.200	0.2500	6.350	0.154	10,453	3,648	2,580	KA075CP0	SA075CP0
LYDL-B075	7.50	190.500	8.1250	206.375	0.3125	7.938	0.240	14,101	5,227	2,560	KB075CP0	SB075CP0
LYDL-C075	7.50	190.500	8.2500	209.550	0.3750	9.525	0.354	16,859	6,685	2,540	KC075CP0	SC075CP0
LYDL-D075	7.50	190.500	8.5000	215.900	0.5000	12.700	0.640	24,332	10,827	2,500	KD075CP0	SD075CP0
LYDL-F075	7.50	190.500	9.0000	228.600	0.7500	19.050	1.542	41,413	21,311	2,420	KF075CP0	SF075CP0
LYDL-G075	7.50	190.500	9.5000	241.300	1.0000	25.400	2.767	60,852	35,190	2,350	KG075CP0	SG075CP0
LYDL-A080	8.00	203.200	8.5000	215.900	0.2500	6.350	0.172	11,121	3,878	2,420	KA080CP0	SA080CP0
LYDL-B080	8.00	203.200	8.6250	219.075	0.3125	7.938	0.259	14,991	5,422	2,410	KB080CP0	SB080CP0
LYDL-C080	8.00	203.200	8.7500	222.250	0.3750	9.525	0.381	17,926	6,984	2,390	KC080CP0	SC080CP0
LYDL-D080	8.00	203.200	9.0000	228.600	0.5000	12.700	0.694	25,844	11,210	2,350	KD080CP0	SD080CP0
LYDL-F080	8.00	203.200	9.5000	241.300	0.7500	19.050	1.588	43,948	22,014	2,290	KF080CP0	SF080CP0
LYDL-G080	8.00	203.200	10.0000	254.000	1.0000	25.400	2.948	65,700	36,765	2,220	KG080CP0	SG080CP0
LYDL-A090	9.00	228.600	9.5000	241.300	0.2500	6.350	0.200	12,500	4,057	2,160	KA090CP0	SA090CP0
LYDL-B090	9.00	228.600	9.6250	244.475	0.3125	7.938	0.299	16,814	5,800	2,150	KB090CP0	SB090CP0
LYDL-C090	9.00	228.600	9.7500	247.650	0.3750	9.525	0.426	20,061	7,464	2,130	KC090CP0	SC090CP0
LYDL-D090	9.00	228.600	10.0000	254.000	0.5000	12.700	0.780	28,913	11,957	2,110	KD090CP0	SD090CP0
LYDL-F090	9.00	228.600	10.5000	266.700	0.7500	19.050	1.769	48,930	23,380	2,050	KF090CP0	SF090CP0
LYDL-G090	9.00	228.600	11.0000	279.400	1.0000	25.400	3.266	73,040	38,891	2,000	KG090CP0	SG090CP0
LYDL-A100	10.00	254.000	10.5000	266.700	0.2500	6.350	0.227	13,834	4,310	1,950	KA100CP0	SA100CP0
LYDL-B100	10.00	254.000	10.6250	269.875	0.3125	7.938	0.331	18,638	6,165	1,940	KB100CP0	SB100CP0
LYDL-C100	10.00	254.000	10.7500	273.050	0.3750	9.525	0.481	22,197	7,922	1,930	KC100CP0	SC100CP0
LYDL-D100	10.00	254.000	11.0000	279.400	0.5000	12.700	0.853	31,938	12,664	1,900	KD100CP0	SD100CP0
LYDL-F100	10.00	254.000	11.5000	292.100	0.7500	19.050	1.950	53,957	24,688	1,860	KF100CP0	SF100CP0
LYDL-G100	10.00	254.000	12.0000	304.800	1.0000	25.400	3.583	80,335	40,941	1,820	KG100CP0	SG100CP0
LYDL-A110	11.00	279.400	11.5000	292.100	0.2500	6.350	0.236	15,168	4,559	1,780	KA110CP0	SA110CP0
LYDL-B110	11.00	279.400	11.6250	295.275	0.3125	7.938	0.340	20,417	6,512	1,770	KB110CP0	SB110CP0
LYDL-C110	11.00	279.400	11.7500	298.450	0.3750	9.525	0.526	24,332	8,358	1,760	KC110CP0	SC110CP0
LYDL-D110	11.00	279.400	12.0000	304.800	0.5000	12.700	0.934	35,008	13,345	1,740	KD110CP0	SD110CP0
LYDL-F110	11.00	279.400	12.5000	317.500	0.7500	19.050	2.177	58,983	25,946	1,700	KF110CP0	SF110CP0
LYDL-G110	11.00	279.400	13.0000	330.200	1.0000	25.400	3.901	87,630	42,916	1,670	KG110CP0	SG110CP0
LYDL-A120	12.00	304.800	12.5000	317.500	0.2500	6.350	0.254	16,547	4,795	1,630	KA120CP0	SA120CP0
LYDL-B120	12.00	304.800	12.6250	320.675	0.3125	7.938	0.376	22,241	6,846	1,620	KB120CP0	SB120CP0
LYDL-C120	12.00	304.800	12.7500	323.850	0.3750	9.525	0.567	26,467	8,781	1,620	KC120CP0	SC120CP0
LYDL-D120	12.00	304.800	13.0000	330.200	0.5000	12.700	1.021	38,032	14,003	1,600	KD120CP0	SD120CP0
LYDL-F120	12.00	304.800	13.5000	342.900	0.7500	19.050	2.359	64,010	27,156	1,570	KF120CP0	SF120CP0
LYDL-G120	12.00	304.800	14.0000	355.600	1.0000	25.400	4.218	94,925	44,811	1,540	KG120CP0	SG120CP0
LYDL-B140	14.00	355.600	14.6250	371.475	0.3125	7.938	0.476	25,844	7,473	1,400	KB140CP0	SB140CP0
LYDL-C140	14.00	355.600	14.7500	374.650	0.3750	9.525	0.689	30,737	9,581	1,390	KC140CP0	SC140CP0
LYDL-D140	14.00	355.600	15.0000	381.000	0.5000	12.700	1.238	44,126	15,244	1,380	KD140CP0	SD140CP0
LYDL-F140	14.00	355.600	15.5000	393.700	0.7500	19.050	2.722	74,063	29,447	1,360	KF140CP0	SF140CP0
LYDL-G140	14.00	355.600	16.0000	406.400	1.0000	25.400	4.899	109,515	48,423	1,330	KG140CP0	SG140CP0
LYDL-B160	16.00	406.400	16.6250	422.275	0.3125	7.938	0.544	29,447	8,060	1,230	KB160CP0	SB160CP0
LYDL-C160	16.00	406.400	16.7500	425.450	0.3750	9.525	0.785	35,052	10,324	1,220	KC160CP0	SC160CP0
LYDL-D160	16.00	406.400	17.0000	431.800	0.5000	12.700	1.406	50,220	16,405	1,210	KD160CP0	SD160CP0
LYDL-F160	16.00	406.400	17.5000	444.500	0.7500	19.050	3.221	84,071	31,600	1,190	KF160CP0	SF160CP0
LYDL-G160	16.00	406.400	18.0000	457.200	1.0000	25.400	5.579	124,150	51,813	1,180	KG160CP0	SG160CP0
LYDL-B180	18.00	457.200	18.6250	473.075	0.3125	7.938	0.612	33,095	8,612	1,090	KB180CP0	SB180CP0
LYDL-C180	18.00	457.200	18.7500	476.250	0.3750	9.525	0.880	39,322	11,023	1,090	KC180CP0	SC180CP0
LYDL-D180	18.00	457.200	19.0000	482.600	0.5000	12.700	1.579	56,270	17,495	1,080	KD180CP0	SD180CP0
LYDL-F180	18.00	457.200	19.5000	495.300	0.7500	19.050	3.583	94,124	33,615	1,070	KF180CP0	SF180CP0
LYDL-G180	18.00	457.200	20.0000	508.000	1.0000	25.400	6.214	138,740	55,011	1,050	KG180CP0	SG180CP0
LYDL-B200	20.00	508.000	20.6250	523.875	0.3125	7.938	0.680	36,698	9,132	980	KB200CP0	SB200CP0
LYDL-C200	20.00	508.000	20.7500	527.050	0.3750	9.525	0.980	43,593	11,681	980	KC200CP0	SC200CP0
LYDL-D200	20.00	508.000	21.0000	533.400	0.5000	12.700	1.746	62,364	18,522	980	KD200CP0	SD200CP0
LYDL-F200	20.00	508.000	21.5000	546.100	0.7500	19.050	4.037	104,177	35,524	960	KF200CP0	SF200CP0
LYDL-G200	20.00	508.000	22.0000	558.800	1.0000	25.400	7.167	153,330	58,023	950	KG200CP0	SG200CP0
LYDL-C250	25.00	635.000	25.7500	654.050	0.3750	9.525	1.220	54,268	13,176	790	KC250CP0	SC250CP0
LYDL-D250	25.00	635.000	26.0000	660.400	0.5000	12.700	2.173	77,577	20,858	780	KD250CP0	SD250CP0
LYDL-F250	25.00	635.000	26.5000	673.100	0.7500	19.050	4.944	129,265	39,869	780	KF250CP0	SF250CP0
LYDL-G250	25.00	635.000	27.0000	685.800	1.0000	25.400	8.845	189,850	64,904	770	KG250CP0	SG250CP0
LYDL-C300	30.00	762.000	30.7500	781.050	0.3750	9.525	1.456	64,989	14,501	660	KC300CP0	SC300CP0
LYDL-D300	30.00	762.000	31.0000	787.400	0.5000	12.700	2.599	92,790	22,922	660	KD300CP0	SD300CP0
LYDL-F300	30.00	762.000	31.5000	800.100	0.7500	19.050	5.897	154,353	43,717	650	KF300CP0	SF300CP0
LYDL-G300	30.00	762.000	32.0000	812.800	1.0000	25.400	10.569	226,370	71,007	650	KG300CP0	SG300CP0
LYDL-F350	35.00	889.000	36.5000	927.100	0.7500	19.050	6.849	179,486	47,164	560	KF350CP0	SF350CP0
LYDL-G350	35.00	889.000	37.0000	939.800	1.0000	25.400	12.292	262,890	76,487	560	KG350CP0	SG350CP0
LYDL-F400	40.00	1016.000	41.5000	1054.100	0.7500	19.050	7.802	204,574	50,274	490	KF400CP0	SF400CP0
LYDL-G400	40.00	1016.000	42.0000	1066.800	1.0000	25.400	13.971	299,410	81,434	490	KG400CP0	SG400CP0

Note: Kaydon® and Silverthin® part numbers are used for interchange reference only. LYDL manufactures compatible equal section thin section radial 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 Radial Contact Ball Bearings

Product Overview

LYDL Equal Section Thin Section Radial Contact Ball Bearings are precision thin section bearings designed for compact, lightweight, and smooth rotary applications. This bearing series features a constant cross-section structure, which allows the bearing to maintain a compact radial section while the bore diameter increases. Compared with standard ball bearings, equal section thin section radial contact ball bearings help reduce equipment weight, save installation space, and simplify compact mechanical designs. The radial contact raceway structure is mainly designed to support radial loads and is suitable for applications requiring smooth rotation, low friction torque, moderate axial load capacity, and stable running performance. This series is widely used in automation equipment, measuring instruments, optical systems, medical equipment, rotary encoders, semiconductor equipment, light-duty robotic mechanisms, and precision mechanical assemblies. Unlike angular contact thin section bearings, radial contact thin section bearings are generally not used as the first choice for high axial stiffness or heavy axial preload applications. For applications requiring higher axial rigidity or matched pair preload, angular contact thin section bearings are recommended. For combined radial, axial, and moment loads in a single bearing position, four-point contact thin section bearings may be considered. LYDL manufactures compatible equal section thin section radial contact ball bearings according to customer drawings, samples, application requirements, and interchange part numbers. Custom options are available for material, precision grade, clearance, lubrication, cage type, packaging, and special working conditions.

Product Brief

1. Equal Section Thin Section Radial Contact Ball Bearings feature a constant cross-section radial contact ball bearing structure designed for compact, lightweight, and smooth rotary applications.
2. Sizes: Bore Diameter: 25.4–1016 mm / 1–40 inch, suitable for compact shafts, lightweight rotary systems, automation equipment, measuring instruments, and precision mechanical structures.
3. Performance Advantages: Space-saving design; low weight; low friction torque; smooth rotation; good radial load capacity; higher speed capability compared with heavily preloaded bearing arrangements.
4. Material: 52100, SUJ2, 100Cr6, 100CrMn6, GCr15SiMn, GCr15 Bearing Steel.
5. Applications: Automation machinery, measuring equipment, optical instruments, rotary encoders, light-duty robot joints, medical equipment, semiconductor equipment, precision instruments, and compact rotary mechanisms.
6. Accuracy: P0, P6, P5, P4; customized clearance, lubrication, cage type, material, and precision grade 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 shafts or hollow rotary structures without significantly increasing bearing weight or installation space.

Radial Contact Raceway Structure

The radial contact raceway structure is mainly designed to carry radial loads. It can also support limited axial loads under suitable operating conditions, but it is not intended for applications requiring high axial stiffness or heavy axial preload.

Smooth Rotation and Low Friction Torque

Compared with heavily preloaded angular contact arrangements, radial contact thin section bearings usually provide lower friction torque and smooth running performance. This makes them suitable for light-load rotary systems, measuring equipment, encoders, optical instruments, and automation mechanisms.

Compact and Lightweight Design

Thin section radial contact ball bearings are ideal for equipment where space saving and weight reduction are important. They are commonly selected for compact rotary modules, lightweight mechanical structures, and applications with limited radial installation space.

Suitable for Moderate Speed Applications

With proper clearance, lubrication, cage design, and installation accuracy, radial contact thin section bearings can provide stable performance in moderate to relatively high-speed rotary applications.

Custom Manufacturing Options

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

Difference Between Radial Contact and Angular Contact Thin Section Bearings

Radial contact and angular contact thin section bearings are both used in compact rotary systems, but their internal structures and application focuses are different.

Item	Radial Contact Thin Section Bearings	Angular Contact Thin Section Bearings
Main Load Direction	Mainly radial load	Radial load + axial load in one direction
Axial Load Capacity	Limited axial load under suitable conditions	Better axial load capacity
Preload Suitability	Usually used with clearance or light preload	Suitable for controlled preload and matched pairs
Rigidity	Suitable for smooth rotation and moderate stiffness	Better for high axial stiffness and paired mounting
Friction Torque	Usually lower	May be higher when preloaded
Typical Use	Encoders, instruments, automation, light rotary mechanisms	Precision rotary tables, robotic joints, optical systems, high-rigidity mechanisms
Selection Priority	Choose when radial load and low torque are more important	Choose when axial stiffness and preload control are more important

Technical Parameters Table

The technical parameter table should be placed below this section. The table can include common LYDL equal section thin section radial contact ball bearing models, bore diameter, outside diameter, width, weight, load ratings, limiting speed, and interchange references.

Typical Applications

LYDL equal section thin section radial contact ball bearings are suitable for equipment requiring compact structure, smooth rotation, low friction torque, and good radial load performance. Typical applications include: Automation machinery Measuring instruments Optical instruments Rotary encoders Medical equipment Semiconductor equipment Light-duty robotic mechanisms Inspection systems Precision instruments Compact rotary modules Lightweight mechanical structures Positioning devices Aerospace auxiliary mechanisms Packaging machinery Laboratory equipment For applications requiring high axial rigidity, bidirectional axial load support, or higher moment stiffness, angular contact or four-point contact thin section bearings should be considered.

Selection Guide

Selecting the correct thin section radial contact ball bearing depends on load direction, available installation space, speed, accuracy requirement, lubrication method, and working environment.

Choose Radial Contact Type for Mainly Radial Loads

Radial contact thin section bearings are recommended when the primary load is radial and the application requires smooth rotation, low friction torque, and compact installation.

Choose Angular Contact Type for Higher Axial Stiffness

If the application has significant axial load, requires controlled preload, or needs higher axial rigidity, angular contact thin section bearings are usually more suitable than radial contact bearings.

Choose Four-Point Contact Type for Combined Loads

If one bearing position must support radial load, axial load in both directions, and moment load, four-point contact thin section bearings may be more suitable.

Choose the Correct Cross Section

The same bore diameter may be available in different cross sections. Smaller cross sections are better for compact and lightweight designs, while larger cross sections generally provide higher load capacity and stiffness.

Consider Clearance and Running Torque

Radial contact thin section bearings are often selected for smooth running and low torque. Bearing clearance should be selected according to speed, temperature, fitting conditions, and load requirements.

Confirm Precision Grade

For general mechanical systems, standard precision may be sufficient. For measuring instruments, optical systems, encoders, medical equipment, and precision automation, P5 or P4 accuracy can be selected according to the required running accuracy.

Provide Application Data for Accurate Selection

To recommend the correct model, please provide the bearing model or drawing, bore diameter, outside diameter, width, radial load, axial load, speed, precision grade, clearance requirement, lubrication method, and working environment.

Interchange Reference

LYDL manufactures compatible equal section thin section radial contact ball bearings according to customer drawings, samples, or interchange part numbers. The models in this series can be used as replacement reference for common radial contact thin section bearing series. Common interchange reference series include: KA Series Radial Contact Thin Section Bearings KB Series Radial Contact Thin Section Bearings KC Series Radial Contact Thin Section Bearings KD Series Radial Contact Thin Section Bearings KF Series Radial Contact Thin Section Bearings KG Series Radial Contact Thin Section Bearings Note: Kaydon® and Silverthin® part numbers are used for interchange reference only. LYDL manufactures compatible thin section radial 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 radial contact ball bearings through material inspection, precision machining, heat treatment, raceway grinding, dimensional measurement, clearance 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 Radial clearance inspection 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 inspection Lubrication Running test Final inspection Anti-rust treatment Packaging and shipment Each process is controlled to help ensure smooth rotation, stable dimensions, low friction torque, and reliable service life.

Installation & Maintenance

Correct installation is important for the performance and service life of thin section radial contact ball bearings. Improper installation, excessive fitting force, contamination, misalignment, or incorrect clearance 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. Avoid misalignment during installation. Do not apply excessive preload unless confirmed by the design. 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 instruments and encoder applications, clean installation conditions and proper clearance control are especially important.

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 radial contact ball bearing?

It is a precision thin section bearing with a constant cross-section design and radial contact raceway structure. It is mainly used to support radial loads while saving space and reducing equipment weight.

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

Radial contact thin section bearings are mainly designed for radial loads and smooth rotation. Angular contact thin section bearings are better for axial load, preload control, and higher axial stiffness.

Can radial contact thin section bearings support axial load?

Radial contact thin section bearings can support limited axial load under suitable conditions, but they are not the best choice for heavy axial load or high axial stiffness applications.

When should I choose radial contact thin section bearings?

Radial contact type is recommended when the application mainly has radial load, requires low friction torque, smooth rotation, compact installation, and moderate speed performance.

When should I choose angular contact thin section bearings instead?

Angular contact type is recommended when the application requires higher axial stiffness, controlled preload, matched pair mounting, or significant axial load capacity.

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, clearance, 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 radial 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 requirement, material, lubrication requirement, and application conditions.

Request a Quote

Looking for equal section thin section radial contact ball bearings for automation equipment, measuring instruments, encoders, optical systems, medical devices, or compact rotary mechanisms? LYDL can provide standard and customized thin section radial 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 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 radial contact ball bearings.