Crossed roller bearing

Customizable

Standards：GOST/ASTM/GB
Inner dimension (ID)：50mm-1500mm
Outer dimension (OD)：80mm-2000mm
Weight：1.14kg-850kg
Structures：outer ring, inner ring, rollers and cage
Applications：precision rotary indexing tables for machine tools, vertical and horizontal boring machine, vertical grinders, rotary surface grinders

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QIBR Model Selection
QIBR Customized Bearing
QIBR Process Control
QIBR Sort and Grade

Type	Main dimensions					Basic load rating (radial）		weight
	inner ring	outer ring	Roller pitch circle diameter Dpw (mm)	width B /B1	Chamfer	C	C0	Kg
	d(mm)	D(mm)		(mm)	r(min)	kN	kN
QIBR-RA5008	50	66	57	8	0.5	5.1	7.19	0.08
QIBR-RA6008	60	76	67	8	0.5	5.68	8.68	0.09
QIBR-RA7008	70	86	77	8	0.5	5.98	9.8	0.1
QIBR-RA8008	80	96	87	8	0.5	6.37	11.3	0.11
QIBR-RA9008	90	106	97	8	0.5	6.76	12.4	0.12
QIBR-RA10008	100	116	107	8	0.5	7.15	13.9	0.14
QIBR-RA11008	110	126	117	8	0.5	7.45	15	0.15
QIBR-RA12008	120	136	127	8	0.5	7.84	16.5	0.17
QIBR-RA13008	130	146	137	8	0.5	7.94	17.6	0.18
QIBR-RA14008	140	156	147	8	0.5	8.33	19.1	0.19
QIBR-RA15008	150	166	157	8	0.5	8.82	20.6	0.2
QIBR-RA16013	160	186	172	13	0.5	23.3	44.9	0.59
QIBR-RA17013	170	196	182	13	0.8	23.5	46.5	0.64
QIBR-RA18013	180	206	192	13	0.8	24.5	49.8	0.68
QIBR-RA19013	190	216	202	13	0.8	24.9	51.5	0.69
QIBR-RA20013	200	226	212	13	0.8	25.8	54.7	0.71

QIBR-RB3010	30	55	41.5	10	0.6	7.35	8.36	0.12
QIBR-RB3510	35	60	46.5	10	0.6	7.64	9.12	0.13
QIBR-RB4010	40	65	51.5	10	0.6	8.33	10.6	0.16
QIBR-RB4510	45	70	56.5	10	0.6	8.62	11.3	0.17
QIBR-RB5013	50	80	64	13	0.6	16.7	20.9	0.27
QIBR-RB6013	60	90	74	13	0.6	18	24.3	0.3
QIBR-RB7013	70	100	84	13	0.6	19.4	27.7	0.35
QIBR-RB8016	80	120	98	16	0.6	30.1	42.1	0.7
QIBR-RB9016	90	130	108	16	1	31.4	45.3	0.75
QIBR-RB10016	100	140	119.3	16	1	31.7	48.6	0.83
QIBR-RB10020		150	123	20	1	33.1	50.9	1.45
QIBR-RB11012	110	135	121.8	12	0.6	12.5	24.1	0.4
QIBR-RB11015		145	126.5	15	0.6	23.7	41.5	0.75
QIBR-RB11020	110	160	133	20	1	34	54	1.56
QIBR-RB12016	120	150	134.2	16	1.6	24.2	43.2	0.72
QIBR-RB12025		180	148.7	25	1.5	66.9	100	2.62
QIBR-RB13015	130	160	144.5	15	0.6	25	46.7	0.72
QIBR-RB13025		190	158	15	1.5	69.5	107	2.82
QIBR-RB14016	140	175	154.8	16	1	25.9	50.1	1
QIBR-RB14025		200	168	25	1.5	74.8	121	2.96
QIBR-RB15013	150	180	164	13	0.6	27	53.5	0.68
QIBR-RB15025		210	178	25	1.5	76.8	128	3.16
QIBR-RB15030		230	188	30	1.5	100	156	5.3
QIBR-RB16025	160	220	188.6	25	1.5	81.7	135	3.14
QIBR-RB17020	170	220	191	20	1.5	29	62.1	2.21
QIBR-RB18025	180	240	210	25	1.5	84	143	3.44
QIBR-RB19025	190	2	211.9	25	1	41.7	82.9	2.99
QIBR-RB20025	200	2	230	25	2	84.2	157	4
QIBR-RB20030		2	240	30	2	114	200	6.7
QIBR-RB20035		2	247.7	35	2	151	252	9.6
QIBR-RB22025	220	280	250.1	25	2	92.3	171	4.1
QIBR-RB24025	240	300	269	25	2.5	68.3	145	4.5
QIBR-RB25025	250	310	277.5	25	2.5	69.3	150	5
QIBR-RB25030		330	287.5	30	2.5	126	244	8.1
QIBR-RB25040		355	300.7	40	2.5	195	348	14.8
QIBR-RB30025	300	360	328	25	2.5	76.3	178	5.9
QIBR-RB30035		395	345	35	2.5	183	367	13.4
QIBR-RB30040	300	405	351.6	40	2.5	212	409	17.2
QIBR-RB35020	350	400	373.4	20	2.5	54.1	143	3.9
QIBR-RB40035	400	480	440.3	35	2.5	156	370	14.5
QIBR-RB40040		510	453.4	40	2.5	241	531	23.5
QIBR-RB45025	450	500	474	25	1	61.7	182	6.6
QIBR-RB50025	500	550	524.2	25	1	65.5	201	7.3
QIBR-RB50040		600	548.8	40	2.5	239	607	26
QIBR-RB50050		625	561.6	50	2.5	267	653	41.7
QIBR-RB60040	600	700	650	40	3	264	721	29
QIBR-RB70045	700	815	753.5	45	3	281	836	46
QIBR-RB80070	800	950	868.1	70	4	468	1330	105
QIBR-RB90070	900	1050	969	70	4	494	1490	120
QIBR-RB1000110	1000	1250	1114	110	5	1220	3220	360
QIBR-RB1250110	1250	1500	1365.8	110	5	1350	1970	440

QIBR-RE2008	20	36	29	8	0.5	3.23	3.1	0.04
QIBR-RE2508	25	41	34	8	0.5	3.63	3.83	0.05
QIBR-RE3010	30	55	43.5	10	0.6	7.35	8.36	0.12
QIBR-RE3510	35	60	48.5	10	0.6	7.64	9.12	0.13
QIBR-RE4010	40	65	53.5	10	0.6	8.33	10.6	0.16
QIBR-RE4510	45	70	58.5	10	0.6	8.62	11.3	0.17
QIBR-RE5013	50	80	66	13	0.6	16.7	20.9	0.27
QIBR-RE6013	60	90	76	13	0.6	18	24.3	0.3
QIBR-RE7013	70	100	86	13	0.6	19.4	27.7	0.35
QIBR-RE8016	80	120	101.4	16	0.6	30.1	42.1	0.7
QIBR-RE9016	90	130	112	16	1	31.4	45.3	0.75
QIBR-RE10016	100	140	121.1	16	1	31.7	48.6	0.83
QIBR-RE10020		150	127	20	1	33.1	50.9	1.45
QIBR-RE11012	110	135	123.3	12	0.6	12.5	24.1	0.4
QIBR-RE11015		145	129	15	0.6	23.7	41.5	0.75
QIBR-RE11020		160	137	20	1	34	54	1.56
QIBR-RE12016	120	150	136	16	0.6	24.2	43.2	0.72
QIBR-RE12025		180	152	25	1.5	66.9	100	2.62
QIBR-RE13015	130	160	146	15	0.6	25	46.7	0.72
QIBR-RE13025		190	162	25	1.5	69.5	107	2.82
QIBR-RE14016	140	175	160	16	1	25.9	50.1	1
QIBR-RE14025		200	172	25	1.5	74.8	121	2.96
QIBR-RE15013	150	180	166	13	0.6	27	53.5	0.68
QIBR-RE15025		210	182	25	1.5	76.8	128	3.16
QIBR-RE15030		230	192	30	1.5	100	156	5.3
QIBR-RE16025	160	220	192	25	1.5	81.7	135	3.14
QIBR-RE17020	170	220	196.1	20	1.5	29	62.1	2.21
QIBR-RE18025	180	240	210	25	1.5	84	143	3.44
QIBR-RE19025	190	240	219	25	1	41.7	82.9	2.99
QIBR-RE20025	200	260	230	25	2	84.2	157	4
QIBR-RE20030		280	240	30	2	114	200	6.7
QIBR-RE20035		295	247.7	35	2	151	252	9.6
QIBR-RE22025	220	280	250.1	25	2	92.3	171	4.1
QIBR-RE24025	240	300	272.5	25	2.5	68.3	145	4.5
QIBR-RE25025	250	310	280.9	25	2.5	69.3	150	5
QIBR-RE25030		330	287.5	30	2.5	126	244	8.1
QIBR-RE25040		355	300.7	40	2.5	195	348	14.8
QIBR-RE30025	300	360	332	25	2.5	75.7	178	5.9
QIBR-RE30035		395	345	35	2.5	183	367	13.4
QIBR-RE30040		405	351.6	40	2.5	212	409	17.2
QIBR-RE35020	350	400	376.6	20	2.5	54.1	143	3.9
QIBR-RE40035	400	480	440.3	35	2.5	156	370	14.5
QIBR-RE40040		510	453.4	40	2.5	241	531	23.5
QIBR-RE45025	450	500	476.6	25	1	61.7	182	6.6
QIBR-RE50025	500	550	526.6	25	1	65.5	201	7.3
QIBR-RE50040		600	548.8	40	2.5	239	607	26
QIBR-RE50050		625	561.6	50	2.5	267	653	41.7
QIBR-RE60040	600	700	650	40	3	264	721	29
Size	Main dimensions					Basic load rating (radial）		weight
	d	D	dp	width B B1	Chamfer	C	C0	Kg
	(mm)	(mm)	(mm)	(mm)	(min)	KN	KN
QIBR-RU42	20	70	41.5	12	0.6	7.35	8.35	0.29
QIBR-RU66	35	95	66	15	0.6	17.5	22.3	0.62
QIBR-RU85	55	120	85	15	0.6	20.3	29.5	1
QIBR-RU 124(G)	80	165	124	22	1	33.1	50.9	2.6
QIBR-RU 124X
QIBR-RU148(G)	90	210	147.5	25	1.5	49.1	76.8	4.9
QIBR-RU 148X
QIBR-RU 178(G)	115	240	178	28	1.5	80.3	135	6.8
QIBR-RU 178X
QIBR-RU 228(G)	160	295	227.5	35	2	104	172	11.4
QIBR-RU 228X
QIBR-RU 297(G)	210	380	297.3	40	2.5	156	281	21.3
QIBR-RU 297X
QIBR-RU 445(G)	350	540	445.4	45	2.5	222	473	35.4


	QIBR-SX011814	70	90	80	10	0.6	15.4	51	0.3
	QIBR-SX011818	90	115	102	13	1	26	91	0.4
	QIBR-SX011820	100	125	112	13	1	28	102	0.5
QIBR-SX011824	120	150	135	16	1	41	146	0.8
QIBR-SX011828	140	175	157	18	1.1	64	240	1.1
QIBR-SX011832	160	200	180	20	1.1	69	275	1.7
QIBR-SX011836	180	225	202	22	1.1	96	381	2.3
QIBR-SX011840	200	250	225	24	1.5	102	425	3.1
QIBR-SX011848	240	300	270	28	2	148	640	5.3
QIBR-SX011860	300	380	340	38	2.1	243	1070	12
QIBR-SX011868	340	420	380	38	2.1	260	1220	13.5
QIBR-SX011880	400	500	450	46	2.5	385	1800	24
QIBR-SX0118/500	500	620	560	56	3	560	2750	44

QIBR-CRBC 4010	QIBR-CRB 4010	40	65	10	0.3	4.28	5.14	0.15
QIBR-CRBC 5013	QIBR-CRB 5013	50	80	13	0.6	10.7	12.6	0.29
QIBR-CRBC 6013	QIBR-CRB 6013	60	90	13	0.6	11.6	14.6	0.33
QIBR-CRBC 7013	QIBR-CRB 7013	70	100	13	0.6	12.3	16.7	0.38
QIBR-CRBC 8016	QIBR-CRB 8016	80	120	16	0.6	18.2	25.5	0.74
QIBR-CRBC 9016	QIBR-CRB 9016	90	130	16	1	19.4	28.6	0.81
QIBR-CRBC10020	QIBR-CRB 10020	100	150	20	1	31.5	45.1	1.45
QIBR-CRBC11020	QIBR-CRB 11020	110	160	20	1	33.5	50.7	1.56
QIBR-CRBC 12025	QIBR-CRB 12025	120	180	25	1.5	47.7	70.5	2.62
QIBR-CRBC13025	QIBR-CRB 13025	130	190	25	1.5	49.2	74.8	2.82
QIBR-CRBC 14025	QIBR-CRB 14025	140	200	25	1.5	50.7	79.2	2.96
QIBR-CRBC15025	QIBR-CRB 15025	150	210	25	1.5	53.8	87.7	3.16
QIBR-CRBC15030	QIBR-CRB 15030	150	230	30	1.5	69.2	108	5.3
QIBR-CRBC20025	QIBR-CRB 20025	200	260	25	2	60.2	110	4
QIBR-CRBC20030	QIBR-CRB 20030	200	280	30	2	108	178	6.7
QIBR-CRBC20035	QIBR-CRB 20035	200	295	35	2	137	215	9.58
Shaft diameter (mm)	Identification number		Main dimensions				Basic dynamic load rating	weight
			(mm)
			inner ring d	outer diameter D	width B	Chamfer r(min)	C	(Kg)
							（KN）
50	QIBR-CRBH 5013 A	QIBR-CRBH 5013 A UU	50	80	13	0.6	17.3	0.29
60	QIBR-CRBH 6013 A	QIBR-CRBH 6013 A UU	60	90	13	0.6	18.8	0.33
70	QIBR-CRBH 7013 A	QIBR-CRBH 7013 A UU	70	100	13	0.6	20.1	0.38
80	QIBR-CRBH 8016 A	QIBR-CRBH 8016 A UU	80	120	16	0.6	32.1	0.74
90	QIBR-CRBH 9016 A	QIBR-CRBH 9016 A UU	90	130	16	0.6	33.1	0.81
100	QIBR-CRBH 10020 A	QIBR-CRBH 10020 A UU	100	150	20	0.6	50.9	1.45
110	QIBR-CRBH 11020 A	QIBR-CRBH 11020 A UU	110	160	20	0.6	52.4	1.56
120	HGCRBH 12025 A	QIBR-CRBH 12025 A UU	120	180	25	1	73.4	2.62
130	QIBR-CRBH 13025 A	QIBR-CRBH 13025 A UU	130	190	25	1	75.9	2.82
140	QIBR-CRBH 14025 A	QIBR-CRBH 14025 A UU	140	200	25	1	81.9	2.96
150	QIBR-CRBH 15025 A	HGCRBH 15025 A UU	150	210	25	1	84.3	3.16
200	QIBR-CRBH 20025 A	QIBR-CRBH 20025 A UU	200	260	25	1	92.3	4
250	QIBR-CRBH 25025 A	QIBR-CRBH 25025 A UU	250	310	25	1.5	102	4.97

QIBR-XR496051	203.2	279.4	31.75	1.5	41	49.2	800	6.5
QIBR-XR678052	330.2	457.2	63.5	3	80	98.4	620	35
QIBR-XR766051	457.2	609.6	63.5	3	106	133	520	51
QIBR-XR820060	580	760	80	5	106	209	300	100
QIBR-XR855053	685.8	914.4	79.375	3	180	224	260	150
QIBR-XR882055	901.7	1117.6	82.55	3	225	297	200	185
QIBR-XR889058	1028.7	1327.15	114.3	3	283	374	160	400
QIBR-XR897051	1549.4	1828.8	101.6	3	326	489	80	500
HJXR637050	300	400	37	1.5	47.2	60	720	13
HJXR652050	310	425	45	2.5	61.6	76.5	640	20
HJXR699050	370	495	50	3	70.2	89.2	600	30

QIBR-XR496051	203.2	279.4	31.75	1.5	41	49.2	800	6.5
QIBR-XR678052	330.2	457.2	63.5	3	80	98.4	620	35
QIBR-XR766051	457.2	609.6	63.5	3	106	133	520	51
QIBR-XR820060	580	760	80	5	106	209	300	100
QIBR-XR855053	685.8	914.4	79.375	3	180	224	260	150
QIBR-XR882055	901.7	1117.6	82.55	3	225	297	200	185
QIBR-XR889058	1028.7	1327.15	114.3	3	283	374	160	400
QIBR-XR897051	1549.4	1828.8	101.6	3	326	489	80	500
QIBR-JXR637050	300	400	37	1.5	47.2	60	720	13
QIBR-JXR652050	310	425	45	2.5	61.6	76.5	640	20
QIBR-JXR699050	370	495	50	3	70.2	89.2	600	30

Internal geometry and cage of the high-speed designed single-row cylindrical roller bearing are optimized for fitting high speed. The high speed design has less bearing rollers than the basic design bearings.

Basic design single row cylindrical roller bearing comes with centering roller and fiberglass-free PA66 cages with a maximum bore diameter of 80 mm (model number suffix TN) and larger sizes with fiberglass reinforced cages (model number suffix TN9). These bearings are especially suitable for high precision applications.

RA type cross roller bearing

RB type cross roller bearing

Raw material

QIBR precision anti-friction bearings are usually made of chrome steel, which consist of about 1% carbon, 1.5% chromium and a small amount of manganese, silicon, and sometimes a small amount of molybdenum.

QIBR offers you a wide range of material options such as GCr15, 100Cr6, SKF 3, SUJ-2 etc. At the same time, some models of QIBR are available in stainless steel.

The rolling element can be ceramic ball (silicon nitride). Due to ceramic is kind of special material, the ceramic ball bearing has advantages of higher rotation speed, good self-lubricating property, and the rigidity is 15%-20% higher than the general bearing, and better high temperature resistance.

Bearing cage

The high-quality cage used by QIBR bearings ensure that the balls are evenly distributed in the bearing rings and can be rotated properly.

The cage has stamped steel wave type, stamped steel rivet type, nylon or phenolic plastic.

QIBR offers a wide range of advice and options depending on the operating conditions.

Seals

In order to prevent contaminants from entering the inside of the bearing, QIBR uses a metal dust cover or a rubber seal with a metal skeleton.

QIBR are able to choose two types as a combination seals according to your working conditions, or choose different kinds of seal materials, such as nitrile rubber BUNA, acrylic rubber HYCAR, fluoro rubber VITON.

Type of lubrication

Lubricating oil is the basic lubricant for ball bearings. Previously most of the lubricating oil was extracted from petroleum. Synthetic oils are now acceptable due to improved performance, such as two lipid synthetic oils, silicones and fluorocarbon synthetic oils. In general, lipid synthetic oils have better low temperature properties, lower volatility, and better temperature characteristics and viscosity compared than petroleum refined oils. Essentially all lubricants contain additives to inhibit chemical changes, prevent metal corrosion, and improve physical properties (antifoam, etc.).

The silicone and fluorocarbon synthetic oils that adopted by QIBR have lower volatility and wider temperature/viscosity characteristics.

Radial clearance

The radial clearance is the gap between the steel ball and the ring. QIBR is precisely tailored to customer's temperature conditions, interference fit, misalignment of the bearing's axis, required noise level and speed.

Service life and the rated load

The bearing life is the number of bearing rotations before the fatigue occurs on the ring or any rolling element (or the rotation time at a constant speed). However, the same set of bearings will not necessarily have the same life under the same conditions. In this case, the rated life is the number of rotations that 90% of the bearings in this group can reach or exceed before bearing weariness (or the rotation time at a constant speed). The service life of QIBR series bearings are 10%-20% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.

The adopted steel balls

The steel balls in the deep groove ball bearings used by QIBR are mainly designed according to the load requirements of the bearing. The bearing ball sizes of different models are different, generally the value of rib coefficient Kd (ditch depth) range 0.35-0.40. , related to bearing diameter, such as 6000 series Kd = 0.35, 6400 series Kd = 0.40; 6200 and 6300 series, d ≤ 25mm take Kd = 0.35, d > 25mm take Kd = 0.40. Groove depth = Kd × steel ball diameter.

Bearing steel ball material comparison table
GB (China)	Gcr15	GCr15SiMn
ASTM/AISI (USA)	52100	*
ГОСТ(Russia)	ШX15	ШX15CГ
BS (UK)	534A99	*
JIS (Japan)	SUJ2	SUJ3
NF (France)	100C6	100CrMn6
VDEh (Germany)	100Cr6 (1.3505)	1.352
Grade of rollers	G3, G5, G10, G16, G20, G24, G28, G40, G60, G100, G200