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Single Row Deep Groove Ball Bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

Single row deep groove ball bearings have a wide variety of different basic standard designs due its different sealing design. The basic designs are shown as the follows.

For manufacturing and economic reason

some of the basic open design bearings

could have grooves in their outer rings,

enable either seals or shields to be fitted.

a open design

b open design with grooves in the outer ring

c bearing with one shield, suffix Z

d bearing with two shields, suffix .2Z

e bearing with one RS seal, suffix RS

F bearing with two RS seals, suffix .2RS

g bearing with one RSR seal, suffix RSR

h bearing with two RSR seals, suffix .2RSR

I bearing with one LFS seal, suffix LFS

J bearing with two LFS seals, suffix .2LFS.

Single row deep groove ball bearings have a wide variety of different basic standard designs due its different sealing design. The basic designs are shown as the follows.

For manufacturing and economic reason
some of the basic open design bearings
could have grooves in their outer rings,
enable either seals or shields to be fitted.
a open design
b open design with grooves in the outer ring
c bearing with one shield, suffix Z
d bearing with two shields, suffix .2Z
e bearing with one RS seal, suffix RS
F bearing with two RS seals, suffix .2RS
g bearing with one RSR seal, suffix RSR
h bearing with two RSR seals, suffix .2RSR
I bearing with one LFS seal, suffix LFS
J bearing with two LFS seals, suffix .2LFS.
Single row deep groove ball bearings have a very limited ability to accommodate misalignments. Under normal applications conditions, misalignments may not exceed 10 angular minutes maximum from their centre position.It must be considered, however, that bearing which runs misaligned are subjected to considerable additional force that will shorten their service life and generate high running noise.
DHK single deep groove ball bearings are normally fitted with pressed cages as standard.For large bearings, usually have machined solid brass cages as standard (suffix M).

DHK single row deep groove ball bearings are produced to normal tolerance class (PN) asstandard.

On order of customer request, DHK can provide higher dimension and geometrical accuracy precision tolerance class.

Tolerances for single row deep groove ball bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

PN/(Normal)

Nominal Bore diameter		Deviation dmp	Variation Vdp Series			Variation Vdmp	Taper bore 1:12 Deviation/ Variation
>	<=	△dmp	7．8．9	0．1	2．3．4	Vdmp	△dmp	△d1mp-dmp	Vdp
2.5 10		0 -8	10	8	6	6	+15 0	+15 0	10
10 18		0 -8	10	8	6	6	+18 0	+18 0	10
18 30		0 -10	13	10	8	8	+21 0	+21 0	13
30 50		0 -12	15	12	9	9	+25 0	+25 0	15
50 80		0 -15	19	19	11	11	+30 0	+30 0	19
80 120		0 -20	25	25	15	15	+35 0	+35 0	25
120 180		0 -25	31	31	19	19	+40 0	+40 0	31
180 250		0 -30	38	38	23	23	+46 0	+46 0	38
250 315		0 -35	44	44	26	26	+52 0	+52 0	44
315 400		0 -40	50	50	30	30	+57 0	+57 0	50
400 500		0 -45	56	56	34	34	+63 0	+63 0	56
500 630		0 -50	63	63	38	38	+70 0	+70 0
630 800		0 -75					+80 0	+80 0
800 1000		0 -100					+90 0	+90 0
1000 1250		0 -125					+105 0	+105 0
1250 1600		0 -160
1600 2000		0 -200

Outer ring

PN/(Normal)

Nominal Outer diameter		Deviation	Variation Vdp Series			Sealed bearing	Variation	Radial runout
>	<=	△Dmp	7．8．9	0．1	2．3．4	2 3 4	VDmp	Kea
6 18		0 -8	10	8	6	10	6	15
18 30		0 -9	12	9	7	12	7	15
30 50		0 -11	14	11	8	16	8	20
50 80		0 -13	16	13	10	20	10	25
80 120		0 -15	19	19	11	26	11	35
120 150		0 -18	23	23	14	30	14	40
150 180		0 -25	31	31	19	38	19	45
180 250		0 -30	38	38	23		23	50
250 315		0 -35	44	44	26		26	60
315 400		0 -40	50	50	30		30	70
400 500		0 -45	56	56	34		34	80
500 630		0 -50	63	63	38		38	100
630 800		0 -75	94	94	55		55	120
800 1000		0 -100	125	125	75		75	140
1000 1250		0 -125						160
1250 1600		0 -160						190
1600 2000		0 -200						220
2000 2500		0 -250						250

DHK single row deep groove ball bearings are produced with normal internal clearance group (CN) as standard.

DHK can provide bearings with other internal clearance group or special clearance according to customer request.

Values of the different internal clearance groups of single and double row deep groove ball bearings are listed in the tables below.

These values are conformity to standard GB/T4604-1991 and ISO 5753-1991.

DHK Single Row/Double Row Deep Groove Ball Bearing Radial Clearance Standard

Bore Dia.(mm)		C2(um)	CN(um)		C3(um)	C4(um)		C5(um)
<=	<=
2.5 6		0 7	2 13		8 23	-- --		-- --
6 10		0 7	2 13		8 23	14 29		20 37
10 18		0 9	3 18		11 25	18 33		25 45
18 24		0 10	5 20		13 28	20 36		28 48
24 30		1 11	5 20		13 28	23 41		30 53
30 40		1 11	6 20		15 33	28 46		40 64
40 50		1 11	6 23		18 36	30 51		45 73
50 65		1 15	8 28		23 43	38 61		55 90
65 80		1 15	10 30		25 51	46 71		65 105
80 100		1 18	12 36		30 58	53 84		75 120
100 120		2 20	15 41		36 66	61 97		90 140
120 140		2 23	18 48		41 81	71 114		105 160
140 160		2 23	18 53		46 91	81 130		120 180
160 180		2 25	20 61		53 102	91 147		135 200
180 200		2 30	25 71		63 117	107 163		150 230
200 225		4 32	28 82		73 132	120 187		175 255
225 250		4 36	31 92		87 152	140 217		205 290
250 280		4 39	36 97		97 162	152 237		225 320
280 315		8 45	42 110		110 180	175 260		260 360
315 355		8 50	50 120		120 200	200 290		290 405
355 400		8 60	60 140		140 230	230 330		330 460
400 450		10 70	70 160		160 260	260 370		370 520
450 500		10 80	80 180		180 290	290 410		410 570
500 560		20 90	90 200		200 320	320 460		460 630
560 630		20 100	100 220		220 350	350 510		540 700
630 710		30 120	120 250		250 390	390 560		560 780
710 800		30 130	130 280		280 440	440 620		620 860
800 900		30 150	150 310		310 490	490 690		690 960
900 1000		40 160	160 340		340 540	540 760		760 1040
1000 1120		40 170	170 370		370 590	590 840		840 1120
1120 1250		40 180	180 400		400 640	640 910		910 1220
1250 1400		60 210	210 440		440 700	700 1000		1000 1340
1400 1600		60 230	230 480		480 770	770 1100		1100 1470
1600 1800		60 250		250 520	520 830		830 1220	1220 1650

Dimensions and Parameters

Inquiry	Designation	Dimensions（mm）				Load ratings(kN)		Speed ratings(rpm )		Mass
Inquiry	Designation	d	D	B	r1,r2 Min	dyn Cr	stat Cor	grease	oil	Kg
	62303.2RSR	17	47	19	1	13.4	6.55	10500	--	0.151
	6303.2Z	17	47	14	1	13.4	6.55	16000	--	0.11
	6303Z	17	47	14	1	13.4	6.55	16000	19000	0.11
	6303RSR	17	47	14	1	13.4	6.55	10500	--	0.11
	6403	17	62	17	1.1	13.4	11	12000	15000	0.275
	61804	20	32	7	0.3	3.45	2.24	19000	24000	0.018
	61804.2RSR	20	32	7	0.3	3.45	2.24	12500	--	0.018
	61804.2Z	20	32	7	0.3	3.45	2.24	19000	--	0.018
	61904	20	37	9	0.3	6.35	3.65	18000	22000	0.038
	61904.2RSR	20	37	9	0.3	6.35	3.65	12000	--	0.038
	61904.2Z	20	37	9	0.3	6.35	3.65	18000	--	0.038
	6004	20	42	12	0.6	9.3	5	17000	20000	0.065
	16004	20	42	8	0.3	6.95	4.05	18000	22000	0.049
	6004.2RSR	20	42	12	0.6	9.3	5	11000	--	0.065
	6004.2Z	20	42	12	0.6	9.3	5	17000	--	0.065
	6004Z	20	42	12	0.6	9.3	5	17000	20000	0.065
	6004RSR	20	42	12	0.6	9.3	5	11000	--	0.065
	6204	20	47	14	1	12.7	6.55	15000	18000	0.105
	6204.2RSR	20	47	14	1	12.7	6.55	9900	--	0.105
	62204.2RSR	20	47	18	1	12.7	6.55	9900	--	0.133
	6204.2Z	20	47	14	1	12.7	6.55	15000	--	0.105
	6204Z	20	47	14	1	12.7	6.55	15000	18000	0.105
	6204RSR	20	47	14	1	12.7	6.55	9900	--	0.105
	6304	20	52	15	1.1	17.3	8.5	14000	17000	0.148
	6304.2RSR	20	52	15	1.1	17.3	8.5	9300	--	0.148
	62304.2RSR	20	52	21	1.1	17.3	8.5	9300	--	0.207
	6304.2Z	20	52	15	1.1	17.3	8.5	14000	--	0.148
	6304Z	20	52	15	1.1	17.3	8.5	14000	17000	0.148
	6304RSR	20	52	15	1.1	17.3	8.5	9300	--	0.148
	6404	20	72	19	1.1	30.5	15	10000	13000	0.412
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