Technical Reference


Design of Bearing Arrangements

1.Housing
1)Bushes
The housing bore should have a chamfer fGx20°±5°,This chamfer makes it easier to press the bushes into the housing.
Housing bore
diameter dG
Chamfer withfG
dG≤30 0.8±0.3
30<dG≤80 1.2±0.4
80<dG≤180 1.8±0.8
180<dG 2.5±1.0
2)Flanged Bushes
The radius at the transition from the radial to the axial component must be taken into consideration for flange bushes. A sufficiently large chamfer must be provided on the housing to prevent the flanged bushes fouling in the area of the radius. Sufficient support must be provided for the flange in applications with axial loading.
Housing bore
diameter dG
Chamfer withfG
dG≤10 1.2±0.2
10<dG 1.7±0.2
2.Shaft
o make fitting easier, the shaft ends should be chamfered. All sharp edges which could damage the sliding layer must be broken. Higher surface qualities will extend the service life only slightly whereas greater roughness depths will reduce the service life considerably. Ground or drawn surfaces are preferred. The surface finish of the mating material should be between Ra 0.2- Ra0.8 um obtained by grinding normally.
Incorrect   Correct
 
3.Seals
If increased levels of contamination occur or the bearing is used in an aggressive environment, the bearing position should be protected. The usual solution is to design the surrounding structure so that the contamination cannot reach the bearing position. A collar of grease may also be used or shaft seals if the level of contamination is particularly high.
Mating Telerance
SHAFT TOLERANCE TABLE (ISO)
C9 D8 E7 E8 F7 G6 H5 H6 H7 H8 JS6 JS7 K6 M6 N6 P6 P7 R6 S6
3 -60 -20 -14 -14 -6 -2 0 0 0 0 ±3 ±5 6 8 10 12 16 16 20
-85 -34 -24 -28 -16 -8 -4 -6 -10 -14 0 2 4 6 6 10 14
3 6 -70 -30 -20 -20 -10 -4 0 0 0 0 ±4 ±6 9 12 16 20 24 23 27
-100 -48 -32 -38 -22 -12 -5 -8 -12 -18 1 4 8 12 12 15 19
6 10 -80 -40 -25 -25 -13 -5 0 0 0 0 ±4.5 ±7 10 15 19 24 30 28 32
-116 -62 -40 -47 -28 -14 -6 -9 -15 -22 1 6 10 15 15 19 23
10 18 -95 -50 -32 -32 -16 -6 0 0 0 0 ±5.5 ±9 12 18 23 29 36 34 39
-138 -77 -50 -59 -34 -17 -8 -11 -18 -27 1 7 12 18 18 23 28
18 24 -110 -65 -40 -40 -20 -7 0 0 0 0 ±6.5 ±10 15 21 28 35 43 41 48
24 30 -162 -98 -61 -73 -41 -20 -9 -13 -21 -33 2 8 15 22 22 28 35
30 40 -120 -80 -50 -50 -25 -9 0 0 0 0 ±8 ±12 18 25 33 42 51 50 59
-182 -119 -75 -89 -50 -25 -11 -16 -25 -39 2 9 17 26 26 34 43
40 50 -130                                
-192                                
50 65 -140 -100 -60 -60 -30 -10 0 0 0 0 ±9.5 ±15 21 31 39 51 62 60 72
-214 -146 -90 -106 -60 -29 -13 -19 -30 -46 2 11 20 32 32 41 53
65 80 -150                             62 78
-224                             43 59
80 100 -170 -120 -72 -72 -36 -12 0 0 0 0 ±11 ±17 25 35 45 59 72 73 93
-257 -174 -107 -126 -71 -34 -15 -22 -35 -54 3 13 23 37 37 51 71
100 120 -180                             76 101
-267                             54 79
120 140 -200 -145 -85 -85 -43 -14 0 0 0 0 ±12.5 ±20 28 40 52 68 83 88 117
-300 -208 -125 -148 -83 -39 -18 -25 -40 -63 3 15 27 43 43 63 92
140 160 -210                             90 125
-310                             65 100
160 180 -230                             93 133
-330                             68 108
180 200 -240 -170 -100 -100 -50 -15 0 0 0 0 ±14.5 ±23 33 46 60 79 96 106 151
-355 -242 -146 -172 -96 -44 -20 -29 -46 -72 14 17 31 50 50 77 122
200 225 -260                             109 159
-375                             80 130
225 250 -280                             113 169
-395                             84 140
250 280 -300 -190 -110 -110 -56 -17 0 0 0 0 ±16 ±26 36 52 66 88 108 126 190
-430 -271 -162 -191 -108 -49 -23 -32 -52 -81 4 20 34 56 56 94 158
280 315 -330                             130 202
-460                             98 170
315 355 -360 -210 -125 -125 -62 -18 0 0 0 0 ±18 ±28 40 57 73 98 119 114 226
-500 -299 -182 -214 -119 -54 -25 -36 -57 -89 4 21 37 62 62 108 190
355 400 -400                             105 224
540                             114 208
400 450 -440 -230 -135 -135 -68 -20 0 0 0 0 ±20 ±31 45 63 80 108 131 166 272
-540 -327 -198 -232 -131 -60 -27 -40 -63 -97 5 23 40 68 68 126 232
450 500 -480                             172 292
-635                             132 252
HOUSING TOLERANCE TABLE (ISO)
! ݣ B10 C9 D8 E7 E8 F7 G7 H6 H7 H8 JS7 K7 M7 N7 P7 R7 S7 T7
  3 180 85 34 24 28 16 12 6 10 14 5 0 -2 -4 -6 -10 -14 !
140 60 20 14 14 6 2 0 0 0 -10 -12 -14 -16 -20 -24
3 6 188 100 48 32 38 22 16 8 12 18 6 3 0 -4 -8 -11 -15 !
140 70 30 20 20 10 4 0 0 0 -9 -12 -16 -20 -23 -27
6 10 208 116 62 40 47 28 20 9 15 22 7 5 0 -4 -9 -13 -17 !
150 80 40 25 25 13 5 0 0 0 -10 -15 -19 -24 -28 -32
10 14 200 138 77 50 59 34 24 11 18 27 9 6 0 -5 -11 -16 -21 !
14 18 150 95 50 32 32 16 6 0 0 0 -12 -18 -23 -29 -34 -39
18 24 244 162 98 61 73 41 28 13 21 33 10 6 0 -7 -14 -20 -27 !
24 30 160 110 65 40 40 20 7 0 0 0 -15 -21 -28 -35 -41 -48 -33
                                -54
30 40 270 182 119 75 89 50 34 16 25 39 12 7 0 -8 -17 -25 -34 -39
170 120 80 50 50 25 9 0 0 0 -18 -25 -33 -42 -50 -59 -64
40 50 280 192                             -45
180 130                             -70
50 65 310 214 146 90 106 60 40 19 30 46 !15 9 0 -9 -21 -30 -42 -55
190 140 100 60 60 30 10 0 0 0 -21 -30 -39 -51 -60 -72 -85
65 80 320 224                         -32 -48 -64
200 150                         -62 -78 -94
80 100 360 257 174 107 125 71 47 22 35 54 !17 10 0 -10 -24 -38 -58 -78
220 170 120 72 72 36 12 0 0 0 -25 -35 -45 -59 -73 -93 -113
100 120 380 267                         -41 -66 -91
240 180                         -76 -101 -126
120 140 420 300 208 125 148 83 54 25 40 63 !20 12 0 -12 -28 -48 -77 -107
260 200 145 85 85 43 14 0 0 0 -28 -40 -52 -68 -88 -117 -147
140 160 440 310                         -50 -85 -119
280 210                         -90 -125 -159
160 180 470 330                         -53 -93 -131
310 230                         -93 -133 -171
180 200 525 355 242 146 172 96 61 29 46 72 !23 13 0 -14 -33 -60 -105 -149
340 240 170 100 100 50 15 0 0 0 -33 -46 -60 -79 -106 -151 -195
200 225 565 375                         -63 -113 -163
380 260                         -109 -159 -209
225 250 605 395                         -67 -123 -179
420 280                         -113 -169 -225
250 280 690 430 271 162 191 108 69 32 52 81 !26 16 0 -14 -36 -74 -138 -198
480 300 190 110 110 56 17 0 0 0 -36 -52 -66 -88 -126 -190 -250
280 315 750 460                         -78 -150 -220
540 330                         -130 -202 -272
315 355 830 500 299 182 214 119 75 36 57 89 !28 17 0 -16 -41 -87 -169 -247
600 360 210 125 125 62 18 0 0 0 -40 -57 -73 -98 -144 -226 -304
355 400 910 540                         -93 -187 -273
680 400                         -150 -244 -330
400 450 1010 595 327 198 232 131 83 40 63 97 !31 18 0 -17 -45 -103 -209 -307
760 440 230 135 135 135 20 0 0 0 -45 -63 -80 -108 -166 -272 -370
450 500 1090 635                         -109 -229 -337
840 480                         -172 -292 -400
Cli bearing & bushing