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266 Part IV: Quality Assurance
Continued
Table 19.3
Diameter measurements (mm) of ball bearings used in the wheels of heavy
construction equipment.
Sample Observations x – i R i
Part IV.B.3
1 15.155 15.195 15.145 15.125 15.155 0.070
2 15.095 15.162 15.168 15.163 15.147 0.073
3 15.115 15.126 15.176 15.183 15.150 0.068
4 15.122 15.135 15.148 15.155 15.140 0.033
5 15.148 15.152 15.192 15.148 15.160 0.044
6 15.169 15.159 15.173 15.175 15.169 0.016
7 15.163 15.147 15.137 15.145 15.148 0.026
8 15.150 15.164 15.156 15.170 15.160 0.020
9 15.148 15.162 15.163 15.147 15.155 0.016
10 15.152 15.138 15.167 15.155 15.153 0.029
11 15.147 15.158 15.175 15.160 15.160 0.028
12 15.158 15.172 15.142 15.120 15.148 0.052
13 15.133 15.177 15.145 15.165 15.155 0.044
14 15.148 15.174 15.155 15.175 15.155 0.027
15 15.143 15.137 15.164 15.156 15.150 0.027
16 15.142 15.150 15.168 15.152 15.153 0.026
17 15.132 15.168 15.154 15.146 15.150 0.036
18 15.172 15.188 15.178 15.194 15.183 0.022
19 15.174 15.166 15.186 15.194 15.180 0.028
20 15.166 15.178 15.192 15.184 15.180 0.026
21 15.172 15.187 15.193 15.180 15.183 0.021
22 15.182 15.198 15.185 15.195 15.190 0.016
23 15.170 15.150 15.192 15.180 15.173 0.042
24 15.186 15.194 15.175 15.185 15.185 0.019
25 15.178 15.192 15.168 15.182 15.180 0.024
x – = 15.1628
– R = 0.03479
Continued