XRB Series

XRB series crossed roller bearings, with their superior performance and compact design, are key components for achieving high-precision rotational motion. Combining the functions of two independent bearings into one, they not only save space but also improve the rigidity and rotational accuracy of the equipment.

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Introduction

XRB Series Crossed Roller Bearing Overview

The ultra-thin design of XRB series crossed roller bearings allows for a high degree of accuracy and rigidity in rotary motion, even in applications where space is limited. The rollers in these bearings are arranged in a 90-degree crossing pattern, which provides high rigidity and load capacity in both the radial and axial directions.

Parameter

XRB series crossed roller bearings
Nominal type	External dimension						Basic rated load		Weight	Corresponding type
	External dimension						（kN）
	Internal diameter	Outside diameter	Width	Pitch Circle diameter of roller	Shoulder dimension		Radial direction
	d	D	B	Dpw	ds	Dh	C	Co	Kg	THK	IKO	NSK
XRB 2008	20	36	8	27	23.5	30.5	3.23	3.1	0.04	RB2008
XRB 2508	25	41	8	32	28.5	35.5	3.63	3.83	0.05	RB2508		NRXT2508
XRB 3010	30	55	10	41.5	37	47	7.35	8.36	0.12	RB3010	CRB3010
XRB 3510	35	60	10	46.5	41	51.5	7.64	9.12	0.13	RB3510
XRB 4010	40	65	10	51.5	47.5	57.5	8.33	10.6	0.16	RB4010	CRB34010	NRXT4010
XRB 4510	45	70	10	56.5	51	61.5	8.62	11.3	0.17	RB4510
XRB 5013	50	80	13	64	57.4	72	16.7	20.9	0.27	RB5013	CRB5013	NRXT5013
XRB 6013	60	90	13	74	68	82	18	24.3	0.3	RB6013	CRB6013	NRXT6013
XRB 7013	70	100	13	84	78	92	19.4	27.7	0.35	RB7013	CRB7013	NRXT7013
XRB 8013	80	110	13	94	87	101	20.5	32	0.38			NRXT8013
XRB 8016	80	120	16	98	91	111	30.1	42.1	0.7	RB8016	CRB8016	NRXT8016
XRB 9016	90	130	16	108	98	118	31.4	45.3	0.75	RB9016	CRB9016	NRXT9016
XRB 9020	90	140	20	115	107	123	32	49	1.27			NRXT9020
XRB 10016	100	140	16	119.3	109	129	31.7	48.6	0.83	RB10016
XRB 10020	100	150	20	123	113	133	33.1	50.9	1.45	RB10020	CRB10020	NRXT10020
XRB 11012	110	135	12	121.8	117	127	12.5	24.1	0.4	RB11012
XRB 11015	110	145	15	126.5	122	136	27.3	41.5	0.75	RB11015
XRB 11020	110	160	20	133	120	143	34	54	1.56	RB11020	CRB11020	NRXT11020
XRB 12016	120	150	16	134.2	127	141	24.42	43.2	0.72	RB12016
XRB 12020	120	170	20	145	137	153	36	62	1.6			NRXT12020
XRB 12025	120	180	25	148.7	133	164	66.9	100	2.62	RB12025	CRB12025	NRXT12025
XRB 13015	130	160	15	144.5	137	152	25	46.7	0.72	RB13015
XRB 13025	130	190	25	158	143	174	69.5	107	2.82	RB13025	CRB13025	NRXT13025
XRB 14016	140	175	16	154.8	147	162	25.9	50.1	1	RB14016
XRB 14025	140	200	25	168	154	185	74.8	121	2.96	RB14025	CRB14025	NRXT14025
XRB 15013	150	180	13	164	157	172	27	53.5	0.68	RB15013
XRB 15025	150	210	25	178	164	194	76.8	128	3.16	RB15025	CRB15025	NRXT15025
XRB 15030	150	230	30	188	173	211	100	156	5.3	RB15030	CRB15030	NRXT15030
XRB 16025	160	220	25	188.6	173	204	81.7	135	3.14	RB16025
XRB 17020	170	220	20	191	184	198	29	62.1	2.21	RB17020
XRB 18025	180	240	25	210	195	225	84	143	3.44	RB18025
XRB 19025	190	240	25	211.9	202	222	41.7	82.9	2.99	RB19025
XRB 20025	200	260	25	230	215	245	84.2	157	4	RB20025	CRB20025
XRB 20030	200	280	30	240	221	258	114	200	6.7	RB20030	CRB20030	NRXT20030
XRB 20035	200	295	35	247.7	225	270	151	252	9.6	RB20035	CRB20035
XRB 22025	220	280	25	250.1	235	265	92.3	171	4.1	RB22025
XRB 24025	240	300	25	269	256	281	68.3	145	4.5	RB24025
XRB 25025	250	310	25	277.5	265	290	69.3	150	5	RB25025	CRB25025	NRXT25025
XRB 25030	250	330	30	287.5	269	306	126	244	8.1	RB25030	CRB25030	NRXT25030
XRB 25040	250	355	40	300.7	275	326	195	348	14.8	RB25040	CRB25040
XRB 26035	260	330	35	293	280	305	62	306	8.7
XRB 30025	300	360	25	328	315	340	76.3	178	5.9	RB30025	CRB30025	NRXT30025
XRB 30035	300	395	35	345	322	368	183	367	13.4	RB30035	CRB30035	NRXT30035
XRB 30040	300	405	40	351.6	326	377	212	409	17.2	RB30040	CRB30040	NRXT30040
XRB 35020	350	400	20	373.4	363	383	54.1	143	3.9	RB35020
XRB 40035	400	480	35	440.3	422	459	156	370	14.5	RB40035	CRB40035	NRXT40035
XRB 40040	400	510	40	453.4	428	479	241	531	23.5	RB40040	CRB40040	NRXT40040
XRB 40070	400	580	70	481	430	532	470	811	72.4
XRB 45025	450	500	25	474	464	484	61.7	182	6.6	RB45025
XRB 50025	500	550	25	524.2	514	534	65.5	201	7.3	RB50025
XRB 50040	500	600	40	548.8	526	572	239	607	26	RB50040	CRB50040	NRXT50040
XRB 50050	500	625	50	561.6	536	587	267	653	41.7	RB50050	CRB50050	NRXT50050
XRB 50070	500	680	70	581.5	530	633	653	1330	86.1		CRB50070
XRB 60040	600	700	40	650	627	673	264	721	29	RB60040	CRB60040	NRXT60040
XRB 60070	600	780	70	682	630	734	700	1540	102		CRB60070
XRB 600120	600	870	120	730	643	817	1490	2800	274		CRB600120
XRB 70045	700	815	45	753.5	731	777	281	836	46	RB70045	CRB70045
XRB 70070	700	880	70	782.5	731	834	766	1810	115		CRB70070
XRB 700150	700	1020	150	852	751	953	1980	3820	478		CRB700150
XRB 80070	800	950	70	868.1	836	900	468	1330	105	RB80070	CRB80070
XRB 800100	800	1030	100	906	840	972	1140	2640	247		CRB800100
XRB 90070	900	1050	70	969	937	1001	494	1490	120	RB90070
XRB 1000110	1000	1250	110	1114	1057	1171	1220	3220	360	RB1000110
XRB 1250110	1250	1500	110	1365.5	1308	1423	1350	3970	440	RB1250110

Core Advantages: Why Choose the XRB Series?

High Rigidity and Ultra-High Rotational Precision: The XRB series features a unique cross-roller arrangement. The rollers are arranged at 90 degrees to each other within a V-shaped raceway. This structure can simultaneously withstand loads from all directions, including radial, axial, and tilting moments. This design significantly improves bearing rigidity and maintains rotational precision to the micron level, ensuring stable and accurate equipment operation.

Compact Design, Space Savings: Compared to traditional dual-bearing configurations, XRB series cross-roller bearings integrate the inner and outer rings and rollers into a single, compact structure. This simplifies installation and significantly reduces installation space, allowing for greater flexibility in equipment design, making it particularly suitable for space-constrained applications.

Excellent Load Capacity: Due to the line contact between the rollers and raceways, XRB bearings can withstand greater loads than traditional point-contact bearings. Whether heavy machinery or precision machine tools, the XRB series provides reliable support.

Easy Installation and Maintenance: XRB series bearings feature a simple design, typically with through-holes or flanged holes, for direct mounting to equipment. Its preload design also ensures optimal performance after installation, reducing the need for additional adjustments.

XRB series cross roller bearings offer a stable and reliable solution for a wide range of applications, from the joints of industrial robots to the rotary tables of CNC machine tools; from precision rotary platforms in medical equipment to core components in aerospace equipment.

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