标准施工手册 STANDARD PRACTICES MANUAL 20-00-02/70-00-01(46)

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Stylus Tip Radius to be Used on Functional Surfaces
Rolling Element Diameter
Description of Defect up to 0.500 inch over 0.500 inch over 1.00 inch
(12,2 mm)  (12,2 mm) but less (25,4 mm) than1.00 inch (25,4 mm)
True brinelling  0.040 inch (1,016 mm)  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
False brinelling  0.040 inch (1,016 mm)  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
Corrosion and Rust  None Acceptable  None Acceptable  None Acceptable 
Pits  0.040 inch (1,016 mm)  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
Pits in a 0.250inch (6,35 mm) diameter circle  0.040 inch (1,016 mm)  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
Nicks and dents  0.040 inch (1,016 mm)  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
Scoring  0.040 inch  0.080 inch (2,032mm)  0.120 inch (3,048 mm) 
Scratches and scuffs-Rollers  0.040 inch(1,016 mm) axial, 0.080 inch (2,032mm) circumferential  0.080 inch (2,032mm) axial, 0.120 inch circumferential  0.120 inch (3,048 mm) axial, 0.160 inch (4,064 mm) circumferential 

* All defects are acceptable unless felt with the designated stylus or are greater in dimension than the maximum size allowable.
Inspection
Page 308 Apr 1/05 Copying, use or disclosure of information on this page is subject to proprietary restrictions.
20-00-02/70-00-01
Table 303.  Inspection Criteria for Acceptance of Bearing Component (Rings and Rolling Elements) Defects*
Description of Defect  Non-Functional Surfaces  Maximum Defect Size Allowable 
Rolling Element Diameter up to 0.500 inch (12,7 mm) over 0.500 inch (12,7 mm) but less than 1.00 inch (25,4 mm) over 1.00 inch (25,4 mm) 
True brinelling  See Dents  0.015 inch (0,381 mm) 0.025 inch (0,635 mm) 0.035 inch (0,889 mm) 
False brinelling  Not Applicable  Not Applicable Not Applicable Not Applicable 
Corrosion and Rust  Not Applicable  Not Applicable Not Applicable Not Applicable 
Pits  0.060 inch (1,523mm) maximum dimension  0.010 inch (0,254 mm) 0.014 inch (0,3556 mm) 0.018 inch (0,4572 mm) 
Pits in a 0.250(6,35 mm) inch diameter circle  Maximum number of 5. 0.030 inch (7,62 mm) in greatest dimension  Maximum of 3 at 0.010 inch (0,254 mm) Maximum of 3 at 0.014 inch (0,3556 mm) Maximum of 3 at 0.018 inch (0,4572 mm) 
Nicks and dents  0.125 inch (3,175 mm) in greatest dimension  0.025 inch (0,635 mm) 0.030 inch (0,762 mm) 0.035 inch (0,889 mm) 
Scoring  Acceptable  Maximum depth of 0.002 inch (0,0508 mm) Maximum depth of 0.002 inch (0,0508 mm) Maximum depth of 0.002 inch (0,0508 mm) 
Scratches and scuffs-Rollers  See Roller end wear  Maximum depth of 0.002 inch (0,0508 mm) Maximum depth of 0.002 inch (0,0508 mm) Maximum depth of 0.002 inch (0,0508 mm) 

* All defects are acceptable unless felt with the designated stylus or are greater in dimension than the maximum size allowable.
Inspection
Page 309 Apr 1/05 Copying, use or disclosure of information on this page is subject to proprietary restrictions.
20-00-02/70-00-01
Table 304.  Inspection Criteria for Acceptance of Bearing Component (Rings and Rolling Elements) Defects*
Scriber (Stylus) Tip Radius to be Used on Functional Surfaces
Rolling Element Diameter
Description of Defect up to 0.500 inch over 0.500 inch but less over 1.00 inch (12,7 mm) than 1.00 inch (25,4 mm) (12,7 mm)
Scratches and scuffs-0.040 inch (1,016 mm) 0.080 inch (2,032 mm) 0.120 inch (3,048 mm) Balls
Single scratches may not extend more than one half way around the circumference, and multiple scratches may not cross or extend more than one quarter the way around the circumference.
　
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