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Double Row Taper Roller Bearing

COKB® tapered roller bearings are produced by COKB® in many designs and sizes to match their many uses.These can be grouped as follows- single row tapered roller bearings (metric size)- si

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Description

COKB® tapered roller bearings are produced by COKB® in many designs and sizes to match their many uses.These can be grouped as follows

- single row tapered roller bearings (metric size)

- single row tapered roller bearings (inch size)

- double row tapered roller bearings

Design Features

Tapered roller bearings are designed to take the combination of radial and axial load.

Tapered roller bearings are available in both inch size and metric size.

Tapered roller bearings have separable outer ring and inner ring assembly, interchangeable, easy to fit and maintenance.

COKB® precision tapered roller bearings are designed to reach V1 grade noise level, which make the quieter running of automobile engine and gearbox.

COKB® tapered roller bearings have tapered inner and outer ring raceways between which tapered rollers are arranged. The projection lines of all the tapered surfaces meet at a common point on the bearing axis. Their design makes tapered roller bearings particularly suitable for the accommodation of combined (radial and axial) loads. The axial load carrying capacity of the bearings is largely determined by the contact angle ; the larger contact angle the greater axial load carrying capacity .

Tapered roller bearings are generally separable, i.e. the cone, consisting of the inner ring with roller and cage assembly, can be mounted separately from the cup (outer ring).

COKB® tapered roller bearings have the logarithmic contact profile that provides optimum stress distribution over the roller/raceway contacts. The special design of the sliding surfaces of the guide flange and large roller ends considerably promote lubricant film formation in the roller end/flange contacts. The resulting benefits include increased operational reliability and reduced sensitivity to misalignment.

COKB® Tapered Roller Bearings have tapered inner and outer ring racesways between which tapered rollers are arranged.Both of which have single and double row structures.With the higher precision than P5 standard, they have high dimension and running accurancy accordingly. Tapered roller bearings with high speed and long lifespan are always used in Automobile, Gearbox, Main shaft of machine tool, Construction machineries, Rolling mill equipment.

Cages

COKB® tapered roller bearings are fitted with one of the following cages.

- A pressed window-type steel cage, roller centred.

- An injection moulded window-type cage of glass fibre reinforced polyamide 6, 6, roler centred.

- A steel pin-type cage

COKB® Double row tapered roller bearings can carry heavy loads and are stiff. They are suitable for the accommodation of combined (radial and axial) loads and can locate a shaft axially in both directions with a given axial clearance or a given preload. Their main use is in gearboxes, hoisting equipment, rolling mills and machines used in the mining industry, e.g. tunnelling machines.

Boundary Dimensions					Basic Load Rating		Limiting Speed(rpm)		Bearing Designation	Other dimension						Calculate coefficient				Mass
(mm)					(K N )		Grease	Oil		Other dimension						Calculate coefficient				(kg)
d	D	T	r3、4min	r5min	Cr	Cor	Grease	Oil		da(max)	Da(min)	Da(max)	Ca(min)	ra(max)	rb(max)	e	Y1	Y2	Y0	Approx
90	160	65	2	0.6	336	490	1700	2400	30218/DF	104	140	150	5	2	0.4	0.43	1.6	2.3	1.6	5.15
100	180	74	2.5	1	418	640	1600	2200	30220/DF	116	157	168	5	2	0.8	0.43	1.6	2.3	1.6	7.7
120	215	87	2.5	1	583	915	1300	1800	30224/DF	141	187	203	6	2	0.8	0.43	1.6	2.3	1.6	13
150	270	98	3	1	737	1120	900	1300	30230/DF	175	234	256	9	2.5	0.8	0.43	1.6	2.3	1.6	22.5
25	62	36.5	1.5	0.6	64.4	80	4500	6000	31305/DF	34	47	55	3	1.5	0.4	0.83	0.81	1.2	0.8	0.55
30	72	41.5	1.5	0.6	80.9	100	4000	5300	31306/DF	40	55	65	3	1.5	0.4	0.83	0.81	1.2	0.8	0.85
35	80	45.5	1.5	0.6	105	134	3400	4500	31307/DF	45	62	71	3	1.5	0.4	0.83	0.81	1.2	0.8	1.1
40	90	50.5	1.5	0.6	128	163	3000	4000	31308/DF	53	77	81	3	1.5	0.4	0.83	0.81	1.2	0.8	1.5
45	100	54.5	1.5	0.6	157	204	2600	3600	31309/DF	57	79	91	4	1.5	0.4	0.83	0.81	1.2	0.8	2
50	110	58.5	2	0.6	183	240	2400	3400	31310/DF	62	87	100	4	2	0.4	0.83	0.81	1.2	0.8	2.6
55	120	63	2	0.6	209	275	2000	3000	31311/DF	68	94	110	4	2	0.4	0.83	0.81	1.2	0.8	3.3
60	130	67	2.5	1	246	335	1900	2800	31312/DF	74	103	118	5	2	0.8	0.83	0.81	1.2	0.8	4.1
65	140	72	2.5	1	281	380	1800	2600	31313/DF	80	111	128	5	2	0.8	0.83	0.81	1.2	0.8	5.05
70	150	76	2.5	1	319	440	1700	2400	31314/DF	85	118	138	5	2	0.8	0.83	0.81	1.2	0.8	6.15
75	160	80	2.5	1	358	490	1600	2200	31315/DF	91	127	148	6	2	0.8	0.83	0.81	1.2	0.8	7.25
80	170	85	2.5	1	380	530	1600	2200	31316/DF	97	134	158	6	2	0.8	0.83	0.81	1.2	0.8	8.75
85	180	89	3	1	413	570	1500	2000	31317/DF	103	143	166	6	2.5	0.8	0.83	0.81	1.2	0.8	10
90	190	93	3	1	457	630	1400	1900	31318/DF	109	151	176	5	2.5	0.8	0.83	0.81	1.2	0.8	11.5
95	200	99	3	1	501	710	1300	1800	31319/DF	114	157	186	5	2.5	0.8	0.83	0.81	1.2	0.8	13
100	215	113	3	1	644	930	1200	1700	31320X/DF	121	168	201	7	2.5	0.8	0.83	0.81	1.2	0.8	18
110	240	126	3	1	781	1160	1000	1500	31322X/DF	135	188	226	7	2.5	0.8	0.83	0.81	1.2	0.8	26
120	260	136	3	1	935	1400	950	1400	31324X/DF	145	203	246	9	2.5	0.8	0.83	0.81	1.2	0.8	38.5
130	280	144	4	1.5	1050	1560	900	1300	31326X/DF	157	218	262	8	3	1	0.83	0.81	1.2	0.8	40
140	300	154	4	1.5	1190	1800	850	1200	31328X/DF	169	235	282	9	3	1	0.83	0.81	1.2	0.8	52.5
150	320	164	4	1.5	1340	2040	800	1100	31330X/DF	181	251	302	9	3	1	0.83	0.81	1.2	0.8	58.5
70	110	50	1.5	0.6	172	305	2400	3400	32014X/DF	78	98	103	5	1.5	0.4	0.43	1.6	2.3	1.6	1.8
85	130	58	1.5	0.6	238	450	1900	2800	32017X/DF	94	117	123	6	1.5	0.4	0.44	1.5	2.3	1.6	2.8
90	140	64	1.5	0.6	292	540	1800	2600	32018/DF	100	125	131	6	1.5	0.4	0.43	1.6	2.3	1.6	3.65
100	150	64	1.5	0.6	292	560	1700	2400	32020X/DF	110	134	141	6	1.5	0.4	0.46	1.5	2.2	1.4	3.95
110	170	76	2	0.6	402	780	1600	2200	32022X/DF	123	152	160	7	2	0.4	0.43	1.6	2.3	1.6	6.3
120	180	76	2	0.6	418	830	1300	1800	32024X/DF	132	161	170	7	2	0.4	0.46	1.5	2.2	1.4	10
130	200	90	2	0.6	530	1080	1300	1800	32026X/DF	144	178	190	7	2	0.4	0.43	1.6	2.3	1.6	10
140	210	90	2	0.6	561	1160	1200	1700	32028X/DF	153	187	200	7	2	0.4	0.46	1.5	2.2	1.4	11
150	225	96	2.5	1	644	1320	1100	1600	32030X/DF	164	200	213	8	2	0.8	0.46	1.5	2.2	1.4	13.3
160	240	102	2.5	1	737	1560	1000	1500	32032X/DF	175	213	228	8	2	0.8	0.46	1.5	2.2	1.4	16
180	220	128	2.5	1	1100	2320	900	1300	32036X/DF	199	247	268	10	2	0.8	0.43	1.6	2.3	1.6	29.5
190	290	128	2.5	1	1060	2400	850	1200	32038X/DF	210	257	278	10	2	0.8	0.44	1.5	2.3	1.6	30.5
200	310	140	2.5	1	1280	2750	800	1100	32040X/DF	222	273	298	11	2	0.8	0.43	1.6	2.3	1.6	47.5
220	340	152	3	1	1540	3350	750	1000	32044X/DF	244	300	326	12	2.5	0.8	0.43	1.6	2.3	1.6	53
240	360	152	3	1	1570	3550	700	950	32048X/DF	262	318	346	12	2.5	0.8	0.46	1.5	2.2	1.4	54.5
280	420	174	4	1.5	2050	4750	600	800	32056X/DF	305	370	402	14	3	1	0.46	1.5	2.2	1.4	84.5
80	140	70.5	2	0.6	319	490	1900	2800	32216/DF	91	122	130	5	2	0.4	0.43	1.6	2.3	1.6	5.8
85	150	77	2	0.6	369	570	1800	2600	32217/DF	97	130	140	5	2	0.4	0.43	1.6	2.3	1.6	5.2
90	160	85	2	0.6	429	680	1700	2400	32218/DF	102	138	150	5	2	0.4	0.43	1.6	2.3	1.6	6.9
100	180	98	2.5	1	539	880	1600	2200	32220/DF	115	154	168	5	2	0.8	0.43	1.6	2.3	1.6	10
110	200	112	2.5	1	682	1140	1400	1900	32222/DF	127	170	188	6	2	0.8	0.43	1.6	2.3	1.6	14.5
120	215	123	2.5	1	792	1400	1300	1800	32224/DF	137	181	203	7	2	0.8	0.43	1.6	2.3	1.6	19
130	230	135.5	3	1	952	1660	1100	1600	32226/DF	146	193	216	7	2.5	0.8	0.43	1.8	2.3	1.6	25.5
140	250	143.5	3	1	1100	2000	1000	1500	32228/DF	159	210	236	8	2.5	0.8	0.43	1.6	2.3	1.6	32.5
150	270	154	3	1	1250	2280	900	1300	32230/DF	171	226	256	8	2.5	0.8	0.43	1.6	2.3	1.6	37
180	320	182	4	1.1	1720	3250	800	1100	32236/DF	204	267	302	10	3	1	0.46	1.5	2.2	1.4	61

Warranty Info

Double Row Taper Roller Bearing

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