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Technical norms NO 1 .
Technical norms No 2 .
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BEARING HOUSIN TECHNlCAL
一、Materials Of Housings
The material Of SX housing is GB9439 HT200 higer and
mechmanical properties are shown in the following
table，SX alse produces housings at spheroidal
graphiteCastings and carbon steel castings etc. for the
bearing which require higer stength according to use．
Mechanical properties 0f Gray Cast iron Ht200 |
| GB Symbol |
Thickness
(mm) |
Tensile strength
(N/mm2(kg/mm) |
Hardness HB |
| HT200 |
2.5-10
lO-20
20-30
30-50 |
200(22.4)
195(19.9)
170(17.3)
160(16.3l |
187-241
170-241
170-241
163-241 |
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二、Accuracy of housings
1.Accuracy of pillw Block-type Housings |
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unit：0.001mm |
|
H0using No
(P.PH.LP..LLP.PA) |
Tolerance 0f h |
203-210 X05～X10
305-310 lJ～7J |
±150 |
211-218 X11～X18
3ll-318 |
±200 |
X20
319-329 |
±300 |
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1．2．Accuracy of
flange-type Housings |
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unit：0.001mm |
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| Housing No |
Tolerane 0f e |
Tolerane 0f i |
| FA.FFL.FT |
F.Fl |
F.FL |
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| 204-210 |
X05-X10 |
305-310 |
±700 |
±500 |
| 211-218 |
X1l-X20 |
3ll-328 |
±1000 |
±800 |
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3.Dimwensional Accuracy 0f flang—type Housings |
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unit：0.001mm |
|
Housing N0 |
Tolerance of i |
Tolerane of e
|
Tolerane
0f
i
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Tolerance Of
spigotrun-outmax
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| FC2 |
FCX |
FS3 |
| Fc |
Fc |
Fs |
Max |
Min |
Max |
Min |
Max |
Min |
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218 |
X05
X06
X07
X08
X09
X10
X11
X12
X13
X14
X15
X16
X17
X18
X20 |
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
32l
322
324
326
328 |
0 |
-46 |
- |
- |
- |
- |
±700 |
±500 |
200 |
| 0 |
-46 |
0 |
-46 |
| O |
-54 |
0 |
-54 |
0 |
-54 |
| 0 |
-72 |
| O |
-63 |
0 |
-63 |
±lOOO |
±800 |
300 |
| O |
-72 |
| 0 |
-72 |
| 0 |
-72 |
| - |
- |
O |
-81 |
400 |
| - |
- |
| 0 |
-89 |
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4.Dimensional
accuracy Of take up housings |
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unit：O.001mm |
| Housing N0 |
Tolerance
of k |
Tolerance
0f e |
| TST |
TX |
T |
| 204-210 |
X05-XlO |
305-310 |
+200
0 |
0
-500 |
| 21l一218 |
X11-X20 |
311-328 |
+300
0 |
0
-800 |
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5.Dimensional
accuracy 0f cartidge type housings |
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unit：O.001mm |
|
HouSing NO |
Tolerance Of a |
Out side surface
run-Out whit
Side max |
Tolerance
Of L |
|
C2 |
CX |
C3 |
| C2 |
CX |
C3 |
Max |
Min |
Max |
Min |
Max |
Min |
204
205
206
207
208
209
210
211
212
213 |
－
X05
X06
X07
X08
X09
X10
X1l
X12
- |
-
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
324
326
328 |
0 |
-30 |
- |
- |
- |
- |
200 |
±200 |
| 0 |
-35 |
0 |
-35 |
0 |
-35 |
| 0 |
-40 |
0 |
-40 |
| O |
-40 |
300 |
±300 |
| - |
- |
| - |
- |
| 0 |
-46 |
| 400 |
| 0 |
-52 |
| 0 |
-57 |
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Nominal dimension of D
sphorical bore diamrter |
H7 |
J7 |
K7 |
| 大于over |
至incl |
Max |
Min |
Max |
Min |
Max |
Min |
| 30 |
50 |
+2S |
O |
+14 |
-11 |
+7 |
-18 |
| 50 |
80 |
+30 |
O |
+18 |
-12 |
+9 |
-2l |
| 80 |
120 |
+35 |
O |
+22 |
-13 |
+1O |
-25 |
| 120 |
180 |
+40 |
0 |
+26 |
-14 |
+12 |
-28 |
| 180 |
250 |
+46 |
O |
+30 |
一16 |
+13 |
-33 |
| 250 |
315 |
+52 |
0 |
+36 |
-16 |
+16 |
-36 |
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