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BS ISO 3548-3:2012

$189.07

Plain bearings. Thin-walled half bearings with or without flange – Measurement of peripheral length

Published By Publication Date Number of Pages
BSI 2012 48
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This part of ISO 3548 specifies, according to ISO 12301, the checking of the peripheral length of thin-walled half bearings with or without flange, and describes the necessary checking methods and measuring equipment.

Thin-walled half bearings are flexible and, in the free condition, do not conform to a cylindrical profile. This is one reason the peripheral length of the half bearings can only be measured under a constraining load by use of specialized measuring equipment.

In addition, measuring equipment different from that illustrated in this part of ISO 3548 can be used, provided the measuring accuracy of the equipment is consistent with the specifications given in Clause 17.

This part of ISO 3548 does not include measurement of the parting line taper.

This part of ISO 3548 applies to thin-walled half bearings, the specifications of which are given in ISO 3548-1.

PDF Catalog

PDF Pages PDF Title
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
10 Figure fig_1
Table tab_1
4 Symbols
11 Table tab_2
5 Purpose of checking
12 Table tab_a
Figure fig_2
6 Checking methods
6.1 Method A
6.2 Method B
13 Table tab_b
Figure fig_3
7 Choice and designation of checking method
7.1 Choice of checking method
14 Table tab_3
7.2 Designation of checking method
8 Measuring equipment
15 Table tab_d
Figure fig_4
16 Table tab_e
Figure fig_5
9 Measuring equipment requirements
9.1 General
9.2 Tolerance on checking load setting
17 Table tab_4
Table tab_5
9.3 Speed of approach of measuring head
9.4 Construction of measuring head
9.5 Accuracy of the measuring plane for metering bars
9.6 Accuracy of the dial gauge
10 Gauging tools for establishing the datum
10.1 General
18 10.2 Master checking block (used alone)
10.3 Series checking block used alone
10.4 Series checking block with master shell
11 Checking block requirements
11.1 General
19 Table tab_f
Figure fig_6
11.2 Reference tooling: master checking block — General
20 Table tab_6
Table tab_7
21 Table tab_8
11.3 Series gauging tools
22 Table tab_9
Table tab_10
Table tab_11
23 Table tab_12
12 Master shell and comparison shell requirements
12.1 Master shell requirements
24 Figure fig_7
Figure fig_8
Table tab_13
25 Table tab_14
Table tab_15
12.2 Comparison shell requirements
26 13 Correction factors
13.1 Reference tooling: master checking block correction factor, Fcor,cbm
13.2 Series control tooling
27 13.3 Marking
13.4 Reference setting
14 Typical checking procedure
28 15 Conditions of the half bearings to be checked
16 Measuring errors
16.1 Errors due to measuring equipment
16.2 Errors due to the checking block
29 16.3 Errors due to the correction factor
16.4 Errors due to the half bearing
16.5 Error due to the choice of checking method
17 Accuracy of methods used
17.1 Checking conditions
17.2 Limits
17.3 Calculation
18 Specifications on bearing drawings
19 Specifications for the control of the checking means
30 Table tab_16
Table tab_17
31 Figure fig_A.1
Annex A
(normative)

Determination of the correction factor of the master checking block — Method A

32 Figure fig_A.2
Figure fig_A.3
33 Figure fig_A.4
Figure fig_A.5
34 Figure fig_A.6
35 Figure fig_B.1
Annex B
(normative)

Determination of the correction factor of the master checking block — Method B

36 Figure fig_B.2
Figure fig_B.3
37 Figure fig_B.4
38 Figure fig_B.5
39 Annex C
(normative)

Determination of the correction factor of the series checking block used alone

41 Annex D
(normative)

Determination of the correction factor of the master shell or comparison shell

43 Annex E
(normative)

Tests and calculation of repeatability, reproducibility and comparability

BS ISO 3548-3:2012
$189.07