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|  MIL-B-81793/26
TABLE II. Retainer.
PN DES
TYPE
PTFE TOROIDS 1/
6
7
PHENOLIC TYPE LAMINATE 2/, 4/
8
VACUUM IMPREGNATED PHENOLIC 3/, 4/
9
NON-POROUS , NON-METALLIC CROWN 4/
l/ PTFE (Polytetrafluoroethylene).
2/ Phenolic or other porous non-metallic material.
3/ Phenolic or other porous non-metallic material
saturated with lubricant, Selection of this choice
dictates choosing manufacturer's standard amount of
lubricant.
4/ Used for high speed applications.
TABLE III. Closures.
Radial internal clearance or contact angle.
TABLE IV.
PN DES
1
0.0001" to 0.0003"
2
0.0002 " to 0.0005 "
0
14 OR LESS 1/
3
0
0
4
GREATER THAN 14 BUT LESS THAN 20 1/
5
0.0005 " to 0 l 0008"
6
GREATER THAN 20 1/
8
0.0008" to 0.0011"
1/ Angular contact bearing designations only.
6
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