MIL-DTL-17901C(SH)
D3183 -
Standard Practice for Rubber - Preparation of Pieces for Test from Products (DoD adopted)
(Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, PO Box C700,
West Conshohocken, PA 19428-2959, or online at www.astm.org.)
INTERNATIONAL STANDARDS ORGANIZATION (ISO)
ISO 2230
-
Rubber Products Guidelines for Storage
(Copies of this document are available from ISO, 1, rue de Varembé, CH-1211 Geneva 20, Switzerland, or
online at www.iso.org.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited
herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws
and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Qualification. The bearings furnished under this specification shall be products that are manufactured by a
manufacturer authorized by the qualifying activity for listing on the applicable qualified manufacturers list before
contract award (see 4.2 and 6.3).
3.2 Bearing material and identification. The following information shall be stamped on each bearing as
follows:
a. Class II: Manufacturer identification, date of manufacture, size (outside diameter and inside diameter).
The letters shall be at least 1/10 inch in height; stamped, etched, or engraved; and readily visible to the unaided eye.
The markings shall not interfere with the installation or performance of the bearing. Flanged bearings are marked on
the end of the flange; sleeved bearings are marked on the outside diameter.
b. Class III: Manufacturer identification, use by month and year (i.e., 5-99), cross section size, and batch
number, also special information such as "1/16 oversize" (for example: "RCN010A112 1/16 oversize"). The letters
shall be at least inch in height and readily visible to the unaided eye. Starting near one end of the stave the above
information shall be stamped at 2-foot intervals along the back of the stave. The markings shall be on the back and
not interfere with the installation or performance of the bearing.
c. Class IV: Manufacturer identification, date of manufacture, size (outside diameter and inside
diameter). The letters shall be at least 1/10 inch in height; permanent ink, stamped, etched, or engraved; and readily
visible to the unaided eye. The markings shall not interfere with the installation or performance of the bearing.
Sleeved bearings are marked on the outside diameter.
d. Class V: Manufacturer identification, date of manufacture, outside diameter, inside diameter, length,
unique serial number with 1 or 2 for each half of a matched set. All information shall be permanent ink or
engraved into the back of the bearing and shall be a minimum of ˝ inch in height. The markings shall not interfere
with the installation or performance of the bearing.
3.2.1 Physical requirements for bearing facing material. The facing material shall be a synthetic rubber
compound and shall conform to the physical requirements in Table I.
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