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Double Row Angular Contact Ball bearings
Design Variants
Misalignment
Cage
Tolerance
Internal clearance
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 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
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