SI Maintenance-Free Rod End Bearing

Name: SI Maintenance-Free Rod End Bearing
Rating: 5 (99 reviews)

SI…C self-lubricating assembled rod end spherical plain bearing: Assembled from a galvanized carbon steel rod end body and a self-lubricating radial spherical plain bearing GE…C, maintenance-free design, no external lubrication required, ensuring long-term stable operation.
SI…ETL 2RS self-lubricating assembled rod end spherical plain bearing: Assembled from a galvanized carbon steel rod end body and a self-lubricating radial spherical plain bearing GE…ET 2RS, featuring a closed-loop seal design to prevent contamination, eliminate lubrication requirements, and adapt to harsh environments.

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Description
Specifications
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Product Number
SI…C (5～30) SI…ETL 2RS (15～80)

Sliding Friction Pair
·SI…C: Steel/PTFE composite material
·SI…ETL 2RS: Steel/PTFE braided fabric

Operating Temperature Range
Suitable for a wide temperature range
·SI…C: 50℃～+150℃
·SI…ETL 2RS: 30℃～+130℃

Customization Options
·Rod end bearings with different pitches or thread precision requirements are available to meet special application needs.
·Left-hand Thread Marking: For left-hand thread versions, please add "L" or "left" after the model number, for example: SIL20C M20×1.5left-6H, to ensure accurate marking.

Bearing number	Dimensions mm/inch																Load Ratings kN		Weight ≈kg
Bearing number	d	B	dₖ	C₁ max	d₂	G 6H	h₁	I₃ min	I₄	I₅	I₇	W	d₃	d₄	rₛ min	α° ≈	Dynamlc	Static	Weight ≈kg
SI5C	5	6	10	4.5	21	M5	30	11	40.5	5	11.5	10	10	13	0.3	13	3.6	8.1	0.023
SIEC	6	6	10	4.5	21	MB	30	11	40.5	5	11.5	11	11	13	0.3	13	3.6	B.1	0.023
SIBC	8	8	13	6.5	24	MB	36	15	48	5	13	13	13	16	0.3	15	5.8	12.9	0.040
S10C	10	9	16	7.5	29	M10	43	20	57.5	6.5	15	16	16	19	0.3	12	B.6	17.8	0.065
S12C	12	10	18	8.5	34	M12	50	23	67	7	18	18	19	22	0.3	10	11	24.5	0.108
S15C	15	12	22	10.5	40	M14	61	30	81	8	21	21	21	26	0.3	8	18	36	0.169
SI15ETL-2RS	15	12	22	10.5	40	M14	61	30	81	8	21	21	21	26	0.3	8	25	36	0.169
S17C	17	14	25	11.5	46	M16	67	34	90	10	24	27	25	29	0.3	10	22	45	0.235
S117ETL-2RS	17	14	25	11.5	46	M16	67	34	90	10	24	27	25	29	0.3	10	32	45	0.235
Si20C	20	16	29	13.5	53	M20×1.5	77	40	103.5	10	25.5	30	28	34	0.3	9	31	60	0.335
SI20ETL-2RS	20	16	29	13.5	53	M20×1.5	77	40	103.5	10	25.5	30	28	34	0.3	9	45	60	0.335
SI25C	25	20	35.5	18	64	M24×2	94	48	128	12	33	36	35	42	0.6	7	51	85	0.665
SI25ETL-2RS	25	20	35.5	18	64	M24×2	94	48	128	12	33	36	35	42	0.6	7	85	85	0.665
SI30C	30	22	40.7	20	73	M30×2	110	56	146.5	15	37.5	46	42	50	0.6	6	65	110	1.05
SI30ETL-2RS	30	22	40.7	20	73	M30×2	110	56	146.5	15	37.5	46	42	50	0.6	6	110	110	1.05
S135ETL-2RS	35	25	47	22	82	M36×3	125	60	168	15	40	55	48	58	0.6	6	140	146	1.50
SI40ETL-2RS	40	28	53	24	92	M39×3	142	85	188	18	47	60	52	65	0.6	7	175	180	2.05
SIS40ETL-2RS	40	28	53	24	92	M42×3	142	85	188	18	47	55	52	65	0.6	7	99	180	1.94
SI45ETL-2RS	45	32	60	28	102	M42×3	145	85	198	20	52	65	58	70	0.8	7	225	240	2.72
SIS45ETL-2R	45	32	60	27	102	M45×3	145	85	198	20	52	60	58	70	0.6	7	127	240	2.61
SI50ETL-2RS	50	35	68	31	112	M45×3	160	68	216	20	57	70	62	75	0.6	6	275	290	3.48
SIS50ETL-2RS	50	35	66	31	112	M52×3	160	69	216	20	57	65	62	75	0.6	6	158	260	3.24
SI60ETL-2RS	60	44	80	39	135	M52×3	175	70	242.5	20	68.5	80	70	88	1	6	430	450	5.55
SIS60ETL-2RS	60	44	80	39	135	M80×4	175	73	242.5	20	68.5	75	70	88	1	6	245	300	4.99
SI70ETL-2RS	70	49	92	43	160	M58×4	200	80	280	20	81	85	80	98	1	6	550	610	8.72
SIS70ETL-2RS	70	49	92	42	160	M72×4	200	80	280	20	81	80	85	98	1	6	313	470	8.33
SI80ETL-2RS	80	55	105	48	180	M84×4	230	85	320	25	91	95	95	110	1	6	705	750	12.9
SISBOETL-2RS	80	55	105	47	180	M80×4	230	85	320	25	91	100	95	110	1	6	400	600	117

Engineering the Future of Motion

About UKL

Founded in 2020, UKL Bearing Manufacturing Co., Ltd. (Wuxi) is China SI Maintenance-Free Rod End Bearing suppliers and OEM/ODM SI Maintenance-Free Rod End Bearing company, an integrated industrial and trading enterprise that focuses on precision manufacturing, combining R&D, production, and sales.
The company specializes in high-performance bearing solutions, providing technical support for global industries with exceptionally high demands for precision and reliability.

With more than 200 skilled professionals and a fully modernized production base, UKL’s facilities cover the entire manufacturing process — forging, annealing, turning, heat treatment, grinding, and automated assembly.
Leveraging over 15 years of OEM/ODM export experience, UKL responds quickly to customer needs, offering flexible and customized services for clients across Europe, Asia, Africa, and the Middle East.

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