Double Row Angular Contact Ball bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

DHK double row angular contact ball bearings have three basic designs:

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1) 32 and 33 type double row angular contact ball bearings(sketch a), feature a filling slot in one face and contact angle of 35 . These bearings must be mounted in such a way the large thrust force acts towards the raceway without the filling slot.

2) 32 B and 33B type double row angular contact ball bearing (sketch b), this is the latest designs, no filling slots, contact angle is 32 . these bearing are capable of accommodating thrust forces equally well in both directions. DHK double row angular contact ball bearings of B design are available with shields or seals on both sides (sketch d and e).For manufacturing reasons, the open design bearings also may have grooves in their outer rings, that are used to locate either shields or seals (sketch c).

3) 33DA type double row angular contact ball bearings, feature two-half inner ring and contact angle of 45 , no filling slots, inner rings are separable (sketch f ).

DHK double row angular contact ball bearings have three basic designs:

1) 32 and 33 type double row angular contact ball bearings(sketch a), feature a filling slot in one face and contact angle of 35 . These bearings must be mounted in such a way the large thrust force acts towards the raceway without the filling slot.
2) 32 B and 33B type double row angular contact ball bearing (sketch b), this is the latest designs, no filling slots, contact angle is 32 . these bearing are capable of accommodating thrust forces equally well in both directions. DHK double row angular contact ball bearings of B design are available with shields or seals on both sides (sketch d and e).For manufacturing reasons, the open design bearings also may have grooves in their outer rings, that are used to locate either shields or seals (sketch c).
3) 33DA type double row angular contact ball bearings, feature two-half inner ring and contact angle of 45 , no filling slots, inner rings are separable (sketch f ).
DHK double row angular contact ball bearings are produced and fitted with pressed steel cages(no suffix indicated), polyamide cages (suffix TV) or brass cages (suffix M).
Kindly please clarify this point period of place an order.

DHK double row angular contact ball bearings are produced to normal class tolerance (PN) as standard.

Detailed values are listed in chapter of tolerance of radial bearing page 8.

Tolerances for DHK double row angular contact 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 double row angular contact ball bearings are produced to axial clearance group CN(normal) as standard. DHK can provide bearings with other axial clearance group on request.

Note: 33DA type application on where have high axial load, there for the press fit to shaft or house will tighten than other bearings, so the normal axial clearance of this design should be C3 group.

Values of clearance groups are listed in the table below.

Axial Internal Clearance Groups Of DHK Double Row Angular Contact Ball Bearings

Bore Dia.(mm)		C2(um)	CN(um)	C3(um)		C4(um)
<=	<=
-- 10		1 11	5 21	12 28		25 45
10 18		1 12	6 23	13 31		27 47
18 24		2 14	7 25	16 34		28 47
24 30		2 15	8 27	18 37		30 50
30 40		2 16	9 29	21 40		33 54
40 50		2 18	11 33	23 44		36 58
50 65		3 22	13 36	26 48		40 63
65 80		3 24	15 40	30 54		46 71
80 100		3 26	18 48	35 63		55 83
100 120		4 30	22 53	42 73		65 96
120 140		4 34	25 59		48 82	74 108

Dimensions and Parameters

Inquiry	Designations	Boundary dimensions					Load ratings[KN]		Speed ratings[rpm]		Mass
Inquiry	Designations	d	D	B	r1,r2 Min	a ≈	Dynmic Cr	stat Cor	grease	oil	Mass
	3318B.2RSR	90	190	73	3	136	230.6	193.3	2000	--	9.23
	3318B.2Z	90	190	73	3	136	230.6	193.3	2000	--	9.23
	3819B	95	120	19	1	--	23.6	31.8	3200	3500	0.501
	3819B.2RSR	95	120	19	1	--	23.6	31.8	3200	--	0.501
	3819B.2Z	95	120	19	1	--	23.6	31.8	3200	--	0.501
	3919B	95	130	26	1.1	--	32.6	41.7	3000	3300	0.901
	3919B.2RSR	95	130	26	1.1	--	32.6	41.7	3000	--	0.901
	3919B.2Z	95	130	26	1.1	--	32.6	41.7	3000	--	0.901
	3019B	95	145	37	1.5	--	72.4	82.9	2600	3100	1.954
	3019B.2RSR	95	145	37	1.5	--	72.4	82.9	2600	--	1.954
	3019B.2Z	95	145	37	1.5	--	72.4	82.9	2600	--	1.954
	3219B	95	170	55.6	2.1	--	145	198.7	2200	3000	5.01
	3219B.2RSR	95	170	55.6	2.1	--	145	198.7	2200	--	5.01
	3319	95	200	77.8	3	143	220	285	1900	2800	11.1
	3820B.2RSR	100	125	19	1	--	23.7	32.8	3100	3400	0.56
	3820B.2Z	100	125	19	1	--	23.7	32.8	3100	--	0.56
	3920B	100	140	30	1.1	--	37.9	48.5	2800	--	1.27
	3920B.2RSR	100	140	30	1.1	--	37.9	48.5	2800	3200	1.27
	3920B.2Z	100	140	30	1.1	--	37.9	48.5	2800	--	1.27
	3020B	100	150	37	1.5	--	74.7	88.2	2500	--	2.04
	3020B.2RSR	100	150	37	1.5	--	74.7	88.2	2500	2800	2.04
	3020B.2Z	100	150	37	1.5	--	74.7	88.2	2500	--	2.04
	3220B	100	180	60.3	2.1	107	178	116	2000	--	5.82
	3220B.2Z	100	180	60.3	2.1	107	178	116	2000	--	5.82
	3320	100	215	82.6	3	153	240	320	1800	2600	13.5
	3222	110	200	69.8	2.1	144	190	260	1900	2800	8.8
	3322	110	240	92.1	3	171	280	400	1700	2400	19
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