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Product List>>Multi-Stage cylindrical roller thrust bearings(Tandem bearings)>>

Multi-Stage cylindrical roller thrust bearings(Basic type)

Product information

Product parameter

   Characteristics
  Multi-Stage cylindrical roller thrust bearings(Tandem bearings) has the characteristics of limited radial space, high axial forces, equal support of all the rows of rollers and long operating life, and is the ideal spindle of parallel screw extruder.

The tandem bearings provided by our institute has the following types: double rows, three rows, four rows, five rows, six rows and eight rows, we also provided bearings with shaft and sleeve barrel. Customers can have their own selections according to center distance of screws, space and load (Figure 1~3). We also accept the orders of other dimensions.

Application of tandem bearings

   When using SBI tandem bearings, the following recommendations should be adhered to:

   1. Preload: 1% of the dynamic basic load rating. The dynamic basic load rating of each tandem bearing see Figure 1~3. Figures not listed will be provided by out institute on request.
   2. Radial guidance: full complement cylindrical roller bearings or needle roller bearings can be used.
   3. Eliminate tilting: the supporting parts must be machined to eliminate any tilting.
   4. Mounting tolerances: SBI recommended the following mounting tolerances: shaft f6 and housing bore F7.
   5. Lubrication: tandem bearings must always be lubricated by oil circulation (Figure 4)

Application examples:
   The tandem bearings has been successfully used in gear boxes for single and twin screw extruders in the rubber and plastics industries due to its limited radial space, high axial forces, long operating life and low frictional power.

Figure 5: An application example of tandem bearings 4-row in twin screw extruder.

1. Axial cylindrical roller bearings      shaft h6 housing H7
2.5.8 Single-row full complement cylindrical roller bearings     shaft p6 housing H7
3. Single-row full complement cylindrical roller bearings     shaft p6 housing H7
4. 3-row full complement cylindrical roller bearings     shaft m6 housing H7
6. 4-row tandem bearings        shaft f6 housing H7
7. Double-row full complement cylindrical roller bearings     shaft m6 housing H7
9. Axial cylindrical roller bearings       shaft h6 housing H7
10. Tapered roller bearings             shaft h6 housing H7

Dimension(mm)			Rows	Rated load(KN)		Weight (kg)	SBI Bearing code
d	D	H	Rows	Ca	Coa	Weight (kg)	New code	Old code
4	20	32	3	18	35	0.053	M3CT420	T3AR420
4	24	62	6	63	93	0.160	M6CT424	T6AR424
4	24	62	6	63	93	0.160	M6CT424X1	--
5	27	52	4	45	92	0.155	M4CT527	T4AR527
	27	78	6	62	137	0.236	M6CT527	T6AR527
	37	78	4	120	228	--	M4CT537	T4AR537
	37	117	6	165	376	--	M6CT537	T6AR537
6	30	88	6	74	191	0.321	M6CT630	T6AR630
	45	69	3	136	259	--	M3CT645	T3AR645
		92	4	170	346	--	M4CT645	T4AR645
		183.5	8	292	693	--	M8CT645	T8AR645
10	37	78	4	95	242	0.486	M4CT1037	T4AR1037
12	42	41.5	2	70	157	0.320	M2CT1242	T2AR1242
		62.5	3	97	235	0.463	M3CT1242	T3AR1242
		83.5	4	122	313	0.640	M4CT1242	T4AR1242
		104.6	5	145	391	0.797	M5CT1242	T5AR1242
		125.5	6	156	470	0.934	M6CT1242	T6AR1242
18	58	126	5	268	765	1.787	M5CT1858	T5AR1858
	58	107.5	5	262	818	1.610	M5CT1858X2	--
	60	101	4	227	711	1.620	M4CT1860	T4AR1860
	72	172	6	562	1829	3.510	M6CT1872	T6AR1872
	80	200	7	600	2217	6.830	M7CT1880	T7AR1880
	100	304	8	1175	4586	13.030	M8CT18100	T8AR18100
20	47	98	5	154	453	0.834	M5CT2047	T5AR2047
20	60	101	4	190	595	1.620	M4CT2060	T4AR2060
22	62	110	5	270	896	1.78	M5CT2262	T5AR2262
	62	132	6	310	1160	2.1	M6CT2262	T6AR2262
	64	101	4	227	677	1.700	M4CT2264	T4AR2264
		128.5	5	270	839	2.130	M5CT2264	T5AR2264
		153	6	312	1009	2.550	M6CT2264	T6AR2264
23	62	105	4	228	717	1.600	M4CT2362	T4AR2362
	85	97	3	361	1359	3.118	M3CT2385	T3AR2385
	90	209.75	6	732	2545	7.75	M6CT2390	T6AR2390
24	68	70	3	189	310	1.400	M3CT2468	T3AR2468
24	68	118	5	292	1132	2.32	M5CT2468	T5AR2468
25	77	134	5	350	1402	3.48	M5CT2577	T5AR2577
28	66	82	3	290	660	1.054	M3CT2866	T3AR2866
28	66	107.5	4	361	840	1.74	M4CT2866	T4AR2866
28	76	135	5	443	1464	3.199	M5CT2876	T5AR2876
29	90	98	3	292.3	1129	3.480	M3CT2990	T3AR2990
30	68	100	4	261	798	1.790	M4CT3068	T4AR3068
30	73	89	3	197	627	2.050	M3CT3073	T3AR3073
		120	4	264	836	2.740	M4CT3073	T4AR3073
		151	5	293	1045	3.420	M5CT3073	T5AR3073
		182	6	338	1197	3.720	M6CT3073	T6AR3073
	75	112	4	264	836	2.290	M4CT3075YB	--
	100	150.5	4	564	2086	6.580	M4CT30100	T4AR30100
	127	288	6	1295	5235	21.70	M6CT30127	T6AR30127
32	78	84	3	290	847	1.930	M3CT3278	T3AR3278
		110.5	4	362	1128	2.580	M4CT3278	T4AR3278
		137	5	442	1397	3.22	M5CT3278	T5AR3278
		163.5	6	497	1616	3.88	M6CT3278	T6AR3278
33	105	112	3	470	1686	5.330	M3CT33105	T3AR33105
33	105	150.5	4	589	2248	7.110	M4CT33105	T4AR33105
34	95	130	4	426	1672	5.166	M4CT3495	T4AR3495
34	95	163	5	507	1996	6.43	M5CT3495	T5AR3495
38	150	163	3	966	3674	16.28	M3CT38150	T3AR38150
	150	214.5	4	1261	4743	21.70	M4CT38150	T4AR38150
	160	360	6	1410	7100	40.8	M6CT38160	T6AR38160
40	110	123	3	525	1999	6.260	M3CT40110	T3AR40110
	110	164	4	656	2657	8.350	M4CT40110	T4AR40110
	127	177	4	826	3503	13.30	M4CT40127	T4AR40127
50	160	167	3	820	3950	--	M3CT50160	T3AR50160
85	290	580	6	6200	26000	--	M6CT85290	T6AR85290
120	360	900.5	8	12100	62400	--	M8CT120360	T8AR120360
120	465	985	8	14400	65600	--	M8CT120456	T8AR120456
140	360	424	4	8400	36200	--	M4CT140360	T4AR140360
350	750	854	4	27000	118000	--	M4CT350750	T4AR350750
420	900	768	3	29000	126000	--	M3CT420900	T3AR420900
431.8	863	449.275	2	17180	88560	--	M2CT431863	ZY431Z1


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