Sendzimir Bearings

Sendzimir Bearings are also called back up roller bearing. They are used in multi-roll cold rolling mills and can also be used in straightening or bending machines. This type of bearing has a particularly thick outer ring and can be mounted on a fixed support shaft to form a support roll or straightening roll. When used, it is mounted in groups on a stationary shaft to form a support roll. The pressure on the working roll is transmitted to the support roll through the intermediate roll and to the frame through the saddle system. Sendzimir bearings are generally designed with two or three rows of rollers, with cages or full rollers (without cages). Its advantages are simple geometry and high radial load capacity. Backing bearings without flanges or movable retaining rings cannot withstand axial loads by themselves, so this type of bearing must use thrust washers made of copper or engineering plastics, which are installed between the end face of the outer ring and the saddle. This also applies to back up bearings in the form of needle rollers.

Product Details

Bearing NO.	Boundary Dimensions				Maximum Radial Load (KN)		Weight
Bearing NO.	d	D	B	C	Dynamic	Static	Kg
BNPF102256/2RZ	50	110	56	55	96	136	2.9
BNUP112452	55	120	52	51.2	104	149	3.4
BNUPA112452	55	120	52	51.2	86	122	3.5
BKBF112452	55	120	52.2	52	166	235	3.5
BNNB112460/BH1	55	120	60	60	159	227	3.8
BNUP112464	55	120	64	63.2	130	185	4.2
BNNB123374	60	165	74	74	306	437	10
BNBA133370	65	165	70	70	185	264	9.5
BNUP143275	70	160	75	74.2	160	230	9
BNUP143290/2RZ	70	160	90	89.2	220	320	10
BNPF143290/2RZ	70	160	90	89.2	240	340	10.5
BNTB143290/IS	70	160.02	90	90	330	480	10
BNTF143290/IS	70	160.02	90	90	350	510	10.5
BNTF143290	70	160.02	90	90	350	510	10.5
NNCF143290V	70	160	90	90	350	510	10.6
BNBA184494	90	220	94	94	310	440	21.5
BNAF184494	90	220	94	94	325	465	21
BNTBP1844120	90	220	120	120	390	555	26.5
BNTPF1844120	90	220	120	120	410	590	27
BNTF1844120	90	220.02	120	120	510	720	27.5
BNUP204596	100	225	96	95.2	350	500	22.5
BNUP2045120/2RZ	100	225	120	119	370	520	28
BNPF2045120/2RZ	100	225	120	119	390	550	28
BNUP2045120/BH1	100	225	120	119	370	520	28
BNPF2045120/BH1	100	225	120	119	390	550	28
BNTB2045120/IS	100	225	120	120	600	860	24.5
BNTF2045120	100	225	120	120	630	890	28
BNFP2045120	100	225	120	120	630	890	28
BNUP2045126	100	225	126	119	370	520	28
NNCF2045130	100	225	130	130	600	850	32
NNCF224690	110	230	90	90	490	640	22
NNCF2246110	110	230	110	110	580	860	30
NNCF2246120	110	230	120	120	630	890	32
BNBA225298	110	260	98	98	310	440	31
BNPBF2252110	110	260	110	110	470	670	35
BNBA2252125	110	260	125	125	390	560	40
NNCF2260108	110	300	108	108	530	560	48
NNCF2452125	120	260	125	125	420	900	40
BNTB2452125	120	260	125	125	410	850	40
BNUP2452160	120	260	160	160	1000	1200	50
BNUP2660150	130	300.02	150	149	890	1280	61.5
BNUPA2660160	130	300.02	160	159.5	610	870	64.5
BNTF2660160	130	300.02	160	160	795	1130	65.5
NNCF2660168 - 2RS	130	300.02	170	168	795	1130	70
BNUP2660172	130	300.02	172.6	171.6	830	1180	68
BNTB2660172	130	300.02	172.6	172.6	790	1120	72.5
BNTF2660172	130	300.02	172.6	172.6	820	1160	71.5
BNUP2660172/2RZ	130	300.02	172.6	171.6	620	890	70
BNUP2660172	130	300.02	172.6	171.6	620	890	70
NNCF3680170P4	180	406.42	170	170	1290	1840	130
NNCF3680170P4Y	180	406.42	170	170	920	1310	130
NNCF3680224	180	406.42	224	224	1150	1620	170
NNCF3680224Y	180	406.42	224	224	1150	1620	170
BNUP3681171	180	406.42	171	170	890	1270	130
BNUP3681224/2RZ	180	406.42	224	223	1150	1620	170
BNUP3681224/BH1	180	406.42	224	223	1150	1620	170
BNTPA3681171	180	406.42	171	170	1070	1530	130
BNTB3681171/IS	180	406.42	171	171	1290	1840	130
BNTF3681171/BH1	180	406.42	171	171	920	1310	130
NNCF3681182 - 2RS	180	406.42	182	179	920	1310	135
BNTB3681217	180	406.42	217	217	1490	2110	165
BNTB3681224	180	406.42	224	224	1530	2170	170
BNTB3681224/BH2	180	406.42	224	224	1530	2170	170
BNTB4092171	200	460	171	170	1310	1860	166
BNUP4092241	200	460	241	240	1790	2540	239
06DC0846A	31.75	76.2	46.23	45.85	121	183	1.27
11N1226V	54.999	120	25.999	25.999	99.3	138	1.69
11DC1252	55	120	52.197	52	254	341	3.27
14DC1690LDS-1	70	160	90	90	434	546	10.1
14DC1690ADS	70	160.07	90	90	475	667	10.5
18DC19100NDS	90	190	100	100	593	770	14.7
20DC23080DS	100	225.021	80	80	759	991	18.2
20DC23120MDS	100	225.021	120	120	1020	1440	27.2
20DC23100NDS-1	100	225	100	100	683	838	21.7
20DC23120KDS-2	99.995	225	120	120	780	995	26
26DC30160DS	130	300	160	159.5	1660	2340	64.8
26DC30170MDS	130	300	172.644	172.644	1950	2900	72.6
26DC30170KDS-3	130	300	172.644	172.644	1650	2210	70
36DC41171DS	180	406.42	171.04	171.04	2580	3810	130
36DC41171ADS	180	406.42	171.04	171.04	2390	3340	124
36DC41171KDS	180	406.42	171.04	171.04	2090	2960	125
36DC41217DS+DP	179.984	406.43	223.96	217	2940	4500	161
36DC41224KDS	179.984	406.43	224.25	220	2430	3530	160
36DC41224QDS	180	406.42	224.25	224	2860	4230	162
10NUP1144	50	110	44.4	44.4	158	167	2.33
10NUP1346/48	50	125	48	46	202	213	3.39
10NUP1352	50	125	52	52	226	256	3.8
10DC1280DS	50	120	80	80	335	379	5.15
10DC1285DS	50	120	85	85	379	427	5.4
12DC1695DS	60	160	95	95	498	589	11.5
13DC17100DS	65	170	100	100	498	597	13.5
18DC23100DS	90	230	100	100	802	982	24.2
20DC2695DS	100	260	95	95	871	1060	30.2
20DC26105DS	100	260	105	105	975	787	33.5
18DC26125DS	90	260	125	125	1150	1520	41.3
20DC26130DS	100	260	130	130	1190	1580	41.5
22DC28165DS	110	280	165	165	1390	1880	60.2
24DC28165DS	120	280	165	165	1380	1940	57.7
24DC35165ADS	120	350	165	165	1710	2220	98.3
26DC35175DS	130	350	175	175	1750	2300	101
12DC1690DS	62	155	90	90	445	529	9.97
12DC16110DS	62	155	110	110	505	622	12.2
18DC2295DS	90	220	95	95	664	795	20.9
18DC22130ADS	90	220	130	130	873	1130	28.7
23DC26140DS	115	260	140	140	1220	1690	41.9
13DC1770DS	65	165	70	70	531	586	8.83
18DC2294DS	90	220	94	94	860	997	21.2
18DC2294/96DS	90	220	96	94	618	700	21
26DC30130DS	130	300.02	130	129	1300	1740	52.2
26DC30130BDS	130	300.02	130	129	1340	1620	51.8
26DC30132ADS	130	300.02	132	129	1430	1830	53.8
WGTR 25x55x31,2 2	25	55	31,2	30,5	30	42	0,4
WGTR 35x80x40	35	80	40	39,2	69	103	1,2
F-82547	45	125	78	77,5	225	325	5,6
WGTR 55x120x52	55	120	52	51,2	123	218	3,4
WGTR 55x120x64	55	120	64	63,2	155	300	4,2
F-560123.01	55	126,02	64	63	163	295	4,6
F-566100.01	60	150	75	73	222	335	7,9
WGTR 70x160x75	70	160	75	74,2	231	380	8,9
WGTR 70x160x90	70	160	90	89,2	300	550	10,7
F-566567.01	70	165	90	88	310	560	10,7
F-565718.01	70,02	160	90	89	300	550	10,7
Z-540268.02.WGTR	70	160,02	90	90	650	285	11,4
Z-541332.01.WGTR	90	220,02	94	94	455	870	21
Z-541332.02.WGTR	90	220,02	94	94	530	1100	21
F-801941.WGTR	90	220,02	96	94	415	780	22,2
Z-567709.01.WGTR	90	220,02	96	94	360	630	20
F-808398.WGTR	90	220,02	120	120	485	1120	28.5
Z-517329.01.WGTR	90	220,02	120	120	540	1500	28.6
F-550356.01.WGTR	90	220,02	122	119	530	1030	27,1
F-801644.02.WGTR	100	225	120	119	560	1310	26
F-801644.03.WGTR	100	225	120	119	485	1050	26
Z-566148.WGTR	100	225	120	119	520	1170	26
Z-543638.02.WGTR	100	225	120	120	530	1380	27,7
Z-575633.WGTR	110	260	98	98	510	1010	31,9
Z-577888.WGTR	130	300,02	130	129	760	1560	54,9
Z-578270.01.WGTR	130	300,02	132	129	760	1560	56,5
Z-564604.WGTR	130	300,02	150	149	890	1860	60
Z-548963.WGTR	130	300,02	161,5	160,5	910	1880	67,4
Z-567455.01.WGTR	130	300,02	172,65	171,6	1010	2370	71,3
Z-567998.01.WGTR	130	300,02	172,65	171,6	1010	2370	73,5
Z-549722.WGTR	130	300,02	172,65	171,6	1010	2370	73,6
Z-549722.01.WGTR	130	300,02	172,65	171,6	1010	2370	73,6
Z-512497.03.WGTR	130	300,02	172,64	172,6	1030	2700	74,8
Z-564247.WGTR	180	406,4	171,04	170	1250	3000	125
Z-564247.02.WGTR	180	406,4	171,04	170	1250	3000	125
F-804209.WGTR	180	406,4	224	220	1420	3450	174
F-800115.01.WGTR	180	406,42	171,04	170	1170	2650	132
Z-527502.03.WGTR	180	406,42	171,04	171	1420	3850	130
Z-543307.01.WGTR	180	406,42	171,04	171	1420	3850	130
F-809717.WGTR	180	406,42	176	170	1250	3000	136
Z-514278.01.WGTR	180	406,42	217	217	1720	4900	150
Z-523247.02.WGTR	180	406,42	224	224	1790	5100	169
Z-523247.03.WGTR	180	406,42	224	224	1790	5100	169

Multi-roll cold rolling mills are widely used for rolling high-precision strips of steel and non-ferrous metals. To prevent the working rolls from shaking, they are supported by intermediate rolls and support shafts. On these support shafts, several Sendzimir Bearings are arranged adjacent to each other separated by support frames. Such an arrangement meets the requirements of load distribution. Depending on the design form, the backing bearing can withstand high radial loads, and can also withstand high radial and axial loads transmitted to the frame through adjacent structures. The backing bearing has strict tolerance requirements and a precision of P4 level. It is used to withstand high loads and can withstand high rolling speeds, up to 1000 m/min depending on the operating conditions. These special properties effectively guarantee the surface quality and flatness of the rolled products. The inner ring of the backing bearing bears point loads and is loosely fitted when installed on the shaft.

With the continuous upgrading of rolling mill equipment and the further improvement of the precision requirements for rolled steel products, Sendzimir rolling mill bearings came into being. The outer diameter of this type of bearing is directly in contact with the intermediate roll and withstands the rolling force while rotating. The outer ring of the bearing has good wear resistance, the inner ring has a sufficiently long rolling fatigue life, the outer ring has the operability of re-grinding, and the outer ring still has good rotation accuracy after re-grinding; the sufficiently soft core has good impact resistance; the sufficiently deep surface hardening layer increases the number of outer diameter repairs while ensuring rigidity; the high-quality material organization ensures high fatigue strength. The difference between the installation wall thickness of all bearings used on one shaft is ≤0.005mm, and the difference between the installation wall thickness of adjacent bearings is ≤0.002mm.

The back up roller bearing have high load capacity; low friction; optimized internal geometry can reduce bearing friction and heat generation; long service life, and the logarithmic curve profile reduces the edge stress at the roller/raceway contact. In addition, the logarithmic curve profile on the outer surface of the bearing outer ring reduces the edge load generated during operation and helps to extend the service life of the bearing. Improve operating reliability The surface treatment of the roller and raceway contact surface is conducive to the formation of fluid dynamic lubrication film. For more effective lubrication, most MONTON backing bearings have lubrication holes, and many bearings have one or more annular lubricating oil grooves on the inner ring for lubrication through the support shaft. The lubricant is transported to the inside of the back up roller bearings through the support shaft, so all backing bearings have lubricating oil holes on the inner ring: some structural forms of bearings also have one or more annular oil grooves on the inner hole. You can contact us for consultation on the number and size of these holes and grooves.

Our company has professional sales and technical engineers who are responsible for providing users with technical consultation, technical services and product technical training on precision bearing data and installation and use. Perfect pre-sales, in-sales and after-sales services constitute a guarantee system for high-quality services, providing users with reliable quality bearing products, and creating a good user experience and rich benefits for every customer.

If you have any questions about products and services, please contact the company's service department directly.