Angular Contact Ball Bearings Double Row DB Combination

Brand :

MISUMI

Caution

Product Description

Angular Contact Ball Bearings Double Row DB Combination
Angular contact ball bearings double row are commonly used in applications that require high precision, high speed. These bearings are available in various sizes to choose from.
[Feature]
● Bearing Size Standards: Metric System
● Inner Diameter Minimum / Maximum (mm.) : 10 and 100
● Outer Diameter Minimum / Maximum (mm.) : 26 and 180
● Width Minimum / Maximum (mm.) : 8 and 34
● Precision (JIS) : Class 5
● Bearing Type : Open (No cover)
● Load Direction : Radial / Thrust Load or Axial Load
[Application]
It is used to support and guide rotating machine's components, such as shafts, wheels, pulleys ,etc

Features

· Because angular contact ball bearings have a contact angle, back-to-back combinations (DB combinations) can
support radial loads and axial loads in both directions simultaneously.
Parallel combinations (DT combinations) can support radial loads and axial loads in one direction at the same time.
Suitable when the axial load in one direction is large.

Drawing

E-B70□□-DB
E-B72□□-DB

(Installation Diagram)

[ M ]Material: SUJ2 Equivalent
Bearing Accuracy: JIS B 1514 Class 5
Contact Angle: 25°

Specification

Order Example	Part Number	-	Double Row Combination
Order Example	E-B7000	-	DB

Part Number	Double Row Combination	d	D	B	Basic Load Rating		Allowable Rotational Speed rpm (Reference)		r (min)	r₁ (min)	Pressure Cone Apex a	Mounting Dimensions				Mass
					Basic Load Rating		Allowable Rotational Speed rpm (Reference)					Ds	dh	R	R₁	(g)
					Cr (Dynamic) kN	Cor (Static) kN	Grease	Oil Lubrication				(min.)	(max.)	(max.)	(max.)	(Reference)
E−B7000	DB	10	26	8	8.1	4.65	27000	34000	0.3	0.15	18.4	12.5	24.8	0.3	(0.15)	42
E−B7200	(Back)	10	30	9	7.55	4.4	23000	29000	0.6	0.3	20.5	15	27.5	0.6	(0.3)	62
E−B7001		12	28	8	8.8	5.45	23000	29000	0.3	0.15	19.5	14.5	26.8	0.3	(0.15)	48
E−B7201		12	32	10	12.1	7.25	22000	27000	0.6	0.3	22.7	17	29.5	0.6	(0.3)	76
E−B7002		15	32	9	9.95	6.85	20000	26000	0.3	0.15	22.6	17.5	30.8	0.3	(0.15)	70
E−B7202		15	35	11	13.2	8.55	19000	24000	0.6	0.3	25.4	20	32.5	0.6	(0.3)	96
E−B7003		17	35	10	10.9	8.25	18000	23000	0.3	0.15	25	19.5	33.8	0.3	(0.15)	90
E−B7203		17	40	12	16.5	11	17000	21000	0.6	0.3	28.5	22	37.5	0.6	(0.3)	140
E−B7004		20	42	12	16.7	12.2	15000	19000	0.6	0.3	29.9	25	39.5	0.6	(0.3)	158
E−B7204		20	47	14	23.5	16.8	14000	17000	1	0.6	33.3	26	42	1	(0.6)	224
E−B7005		25	47	12	18.3	14.8	13000	17000	0.6	0.3	32.8	30	44.5	0.6	(0.3)	182
E−B7205		25	52	15	24.9	19	12000	15000	1	0.6	37.2	31	47	1	(0.6)	270
E−B7006		30	55	13	23.6	20.2	11000	14000			37.5	6	50			266
E−B7206		30	62	16	34.7	27.4	10000	13000			42.6	36	57			416
E−B7007		35	62	14	28.4	25.2	9800	12000	(1)	(0.6)	(42)	(41)	(57)	(1)		340
E−B7207		35	72	17	45.7	37.3	8800	11000	1.1	0.6	47.9	42	67	1		590
E−B7008		40	68	15	30.4	29.2	8900	11000	(1)	(0.6)	(46.2)	(46)	(63)	(1)		420
E−B7208		40	80	18	54.6	46.7	8000	10000	1.1	0.6	52.6	47	75	1		764
E−B7009		45	75	16	36.2	35.4	8000	10000	(1)	(0.6)	(50.6)	(51)	(70)	(1)		520
E−B7209		45	85	19	61.3	53.2	7500	9400	1.1	0.6	56.5	52	80	1		860
E−B7010		50	80	16	38.4	40.2	7300	9200	(1)	(0.6)	(53.5)	(56)	(75)	(1)		580
E−B7210		50	90	20	64	58.7	6800	8500	1.1	0.6	60.4	57	85	1		970
E−B7011		55	90	18	50.5	52.5	6600	8300	(1.1)	(0.6)	(59.9)	(62)	(85)	(1)		840
E−B7211		55	100	21	79.1	74.2	6100	7600	(1.5)	(1)	(65.7)	(64)	(94)	(1.5)	(1)	1270
E−B7012		60	95	18	51.8	56.1	6200	7700	(1.1)	(0.6)	(62.7)	(67)	(90)	(1)	(0.6)	900
E−B7212		60	110	22	95.7	91.5	5500	6900	(1.5)	(1)	(71.1)	(69)	(104)	(1.5)	(1)	1640
E−B7013		65	100	18	54.7	62.8	5800	7200	(1.1)	(0.6)	(65.5)	(72)	(95)	(1)	(0.6)	940
E−B7213		65	120	23	109	108	5200	6400	(1.5)	(1)	(76.4)	(74)	(114)	(1.5)	(1)	2040
E−B7014		70	110	20	69.3	78.7	5300	6600	(1.1)	(0.6)	(72)	(77)	(105)	(1)	(0.6)	1320
E−B7214		70	125	24	113	111	4900	6100	(1.5)	(1)	(80.3)	(79)	(119)	(1.5)	(1)	2240
E−B7015		75	115	20	70.9	83.4	5000	6300	(1.1)	(0.6)	(74.8)	(82)	(110)	(1)	(0.6)	1380
E−B7215		75	130	25	129	130	4600	5800	(1.5)	(1)	(84.2)	(84)	(124)	(1.5)	(1)	2460
E−B7016		80	125	22	86.7	101	4600	5800	(1.1)	(0.6)	(81.2)	(87)	(120)	(1)	(0.6)	1860
E−B7216		80	140	26	139	143	4300	5400	(2)	(1)	(89.5)	(90)	(134)	(2)	(1)	3000
E−B7017		85	130	22	88.6	107	4400	5500	(1.1)	(0.6)	(84.1)	(92)	(125)	(1)	(0.6)	1940
E−B7217		85	150	28	160	167	4000	5000	(2)	(1)	(95.8)	(95)	(144)	(2)	(1)	3740
E−B7018		90	140	24	106	127	4100	5100	(1.5)		(90.4)	(99)	(134)	(1.5)		2520
E−B7218		90	160	30	183	193	3800	4700	(2)		(102.2)	(100)	(154)	(2)		4600
E−B7019		95	145	24	108	134	3900	4800	(1.5)		(93.3)	(104)	(139)	(1.5)		2640
E−B7219		95	170	32	198	207	3500	4400	(2.1)	(1.1)	(108.5)	(107)	(163)	(2)		5560
E−B7020		100	150	24	111	141	3800	4700	(1.5)	(1)	(96.2)	(109)	(144)	(1.5)		2740
E−B7220		100	180	34	223	235	3300	4100	(2.1)	(1.1)	(114.8)	(112)	(173)	(2)		6640

Technical Information

Inner and Outer Dimension Tolerance (JIS B 1514 Class 5)

d Inner Diameter Tolerance

ｄ (mm)		Inner Diameter Tolerance (mm)

Over	or Less
0.6	2.5	0
		-0.005
2.5	10	0
		-0.005
10	18	0
		-0.005
18	30	0
		-0.006
30	50	0
		-0.008
50	80	0
		-0.009

D Outer Diameter Tolerance

D (mm)		Outer Diameter Tolerance (mm)

Over	or Less
2.5	6	0
		-0.005
6	18	0
		-0.005
18	30	0
		-0.006
30	50	0
		-0.007
50	80	0
		-0.009
80	120	0
		-0.01

Cautions/Prohibitions

If the shaft and housing have poor precision, the bearing may not be able to perform as it should. For example, if the accuracy of the bearing mounting part is poor, this may cause the inner and outer rings to tilt. In this case, in addition to the load applied to the bearing, a peripheral stress centralized load (Edge Load) is also applied, which not only reduces the fatigue life of the bearing, but in severe cases can cause damage such as breakage and seizure of the retainer.

*Please use the following dedicated installation tools to install and remove bearings.

Bearing Heater
ベアリングヒーター

Correct installation of bearing heaters will extend the life of the bearings.
When properly installed and maintained, rolling bearings are reliable mechanical components with a long service life.
If you use an induction heater, the bearing will expand outward in the cylindrical direction after heating, preventing damage during installation.
Heating with induction heaters is the most scientific heating method and does not require preheating and can reach up to 110°C within seconds or minutes depending on the weight of the bearing,
without adversely affecting pre-applied lubrication.

Bearing Puller
ベアリングプーラー

If the bearing is installed in the following conditions, it can be removed using a dedicated puller.
(a) Shaft Shape: Cylindrical Shaft, Bearing Inner Ring I.D. Shape: Cylindrical hole.
(b) Shaft Shape: Cylindrical Shaft, Shape of inner ring I.D. of bearing using adapter sleeve: Positive shaft body hole.
(c) Shaft Shape: Positive shaft body, Shape of inner ring I.D. of bearing: Positive shaft body hole. No matter how it is installed, be sure to unlock the lock nut on the shaft (or the lock nut on the adapter sleeve) and loosen it before removing it.