Specifications

Thin section bearing,These bearings are slim bearings having a small outside diameter, in comparison with the bore diameter,

 

 

RB30040 crossed roller bearing|300*405*40mm|thin section bearing

(Separable Outer Ring, Type for Inner Ring Rotation)

RB30040 crossed roller bearing is the basic model of the Cross Roller bearing, despite the minimum possible dimensions of the inner and outer rings, its outer ring is separable while the inner ring is integrated with the main body.  This model is used in locations where the rotation accuracy of the inner ring is required. 

 

shaft  diameter  (mm)	Identifi -cation  number	Main dimensions						Shoulder  height		Basic load  rating (radial)		weight
		inner  ring  d  (mm)	outer  ring  D (mm)	Roller pitch  circle diameter  dp(mm)	width  B B1 (mm)	Greasing  hole φ	Chamfer  r(min)	ds	Dh	C kN	C0 kN	Kg
250	RB25025	250	310	277.5	25	2	3	265	290	69.3	150	5
	RB25030		330	287.5	30	3	3	269	306	126	244	8.1
	RB25040		355	300.7	40	3.5	3	275	326	195	348	14.8
300	RB30025	300	360	328	25	2	3	315	340	76.3	178	5.9
	RB30035		395	345	35	3	3	322	368	183	367	13.4
	RB30040		405	351.6	40	3.5	3	326	377	212	409	17.2
350	RB35020	350	400	373.4	20	1.5	3.5	363	383	54.1	143	3.9
400	RB40035	400	480	440.3	35	3	3.5	422	459	156	370	14.5
	RB40040		510	453.4	40	3.5	1.5	428	479	241	531	23.5
450	RB45025	450	500	474	25	1.5	1.5	464	484	61.7	182	6.6
500	RB50025	500	550	524.2	25	1.5	1.5	514	534	65.5	201	7.3
	RB50040		600	548.8	40	3	3.5	526	572	239	607	26
	RB50050		625	561.6	50	3.5	3.5	536	587	267	653	41.7
600	RB60040	600	700	650	40	3	4	627	673	264	721	29
700	RB70045	700	815	753.5	45	3	4	731	777	281	836	46
800	RB80070	800	950	868.1	70	4	5	836	900	468	1330	105
900	RB90070	900	1050	969	70	4	5	937	1001	494	1490	120
1000	RB1000110	1000	1250	1114	110	6	6	1057	1171	1220	3220	360
1250	RB1250110	1250	1500	1365.8	110	6	6	1308	1423	1350	3970	440

 Rotation accuracy: With the Cross Roller bearing, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90°V groove, separated from each other by a spacer retainer.  This design allows just one bearing to receive loads in all directions including, radial, axial and moment loads. Since the Crossed Roller bearing achieves high rigidity and the precision can reach up to P4.P2,despite the minimum possible dimensions of the inner and outer rings,it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines.Structure features of  RB30040 crossed roller bearing: 

The spacer retainer fitting among RB series crossed roller bearing cross arrayed rollers prevents rollers from skewing and the rotation torque from increasing due to friction between rollers. Unlike conventional types using steel sheet retainers, the Cross roller bearing does not cause displacement or locking of rollers and provides a stable rotation torque. Since the inner and outer rings are designed to be separable, the bearing clearance can be adjusted. In addition, highly accurate rotary motion is ensured through adjusting the bearing clearance to provide a preload.

Usage characteristics

The inner and outer rings, which are separable, are secured to RB30040 Cross Roller bearing body after the rollers and spacer retainers are installed. This procedure prevents the rings from separating from each other.  Thus, it is easy to handle the rings when installing this type.

Example of installation for RB30040 crossed roller bearings:

     Nowadays, as a professional percision bearing manufacture, we are proud of continual innovation, flexible production, speedy delivery, rapid after-sales service(2 years) and quick response. 

       Luoyang BoYing Bearing Co., Ltd,(BYC) is a professional manufacturer of high precision bearings, which has combine researching and developing,producing and marketing together. Taking the advantage of the strong industrial basis of Luoyang, under the guidance of the pioneer in bearing industry. we grew up rapidly. After years of researching and producing practice,we have developed a very integrated system ,Now,we have solid technical strength,excellent processing facilities ,perfected production & test condition,and  also completed  quality control.

     The main products of our company are crossed roller bearings, YRT rotary table bearings, crossed tapered roller bearings. The leading products include crossed roller bearing RB, RE, RU,RA,CRBC, CRBH, XSU, SX series, rotary table bearings YRT, YRTS,YRTM,ZKLDF series, crossed tapered roller bearing JXR, XR series, almost whole range of precision bearings. The accuracy grades are P5, P4, P2, and the size of inner ring are ranging from Φ50mm --- Φ1300mm. Our products are optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines,mainly to replace the imported bearings. Also, we can design,choose and manufacture  non-standard,large size precision bearings as customer requested.

Now we adhere our management philosophy "Focus on details, Enhance self-ability",“Providing best products,and Satisfied after-sale service” We are looking forward to cooperate with customers all over the word ,contributing to the development and technology of  your enterprise.