NTN - Bearing units catalog a-21000-i
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NTN - Bearing units catalog a-21000-i

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ntnamericas.com<br />

APPENDICES<br />

LUBRICATION<br />

Cap of fitting<br />

67.5˚<br />

L<br />

Body of fitting<br />

B<br />

H<br />

H<br />

d<br />

d<br />

B<br />

GA Type<br />

GA type<br />

GB Type<br />

GB type<br />

Table 5<br />

Grease Fitting Dimensions<br />

Designation<br />

d<br />

H L B<br />

mm inch mm inch mm inch<br />

GA-1/4-28UNF 1/4-28UNF 8.5 0.335 – – 7 0.276<br />

GA-PF1/8 G1/8 12 0.472 – – 10 0.394<br />

GA-PF1/4 G1/4 14 0.551 – – 14 0.551<br />

GB-1/4-28UNF 1/4-28UNF 10.5 0.413 9.3 0.366 8 0.315<br />

GB-PF1/8 G1/8 14.2 0.559 13.5 0.531 10 0.394<br />

GB-PF1/4 G1/4 15 0.591 13.5 0.531 14 0.551<br />

Table 6<br />

Designation of Applicable <strong>Bearing</strong> Units<br />

Nominal Screw Size Series 2 Series X Series 3<br />

1/4-28UNF 203-209 X05-X08 305-309<br />

G1/8 210-215 X09-X14 310-315<br />

G1/4 216-218 X15-X20 316-328<br />

M6X1 (Corrosion Resistant only) 201-212 – –<br />

Note: Screw size for the cartridge type is 1/4-28UNF.<br />

275

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