ASTM D3336-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D3336–05
Standard Test Method for
Life of Lubricating Greases in Ball Bearings at Elevated
1
Temperatures
This standard is issued under the fixed designation D 3336; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope ball bearings operating under light loads at high speeds and
elevated temperatures.
1.1 This test method covers the evaluation of the perfor-
mance of lubricating greases in ball bearings operating under
4,5
5. Apparatus
light loads at high speeds and elevated temperatures.
6
5.1 Test Spindle (see Figs. 1-4 ), capable of operating at
1.2 The values stated in inch-pound units are to be regarded
speeds of 10 000 rpm and temperatures as high as 371°C
as standard. The values given in parentheses are mathematical
(700°F). The test bearing seat dimension shall be 19.99 to
conversions to SI units that are provided for information only
20.00 mm (0.7870 to 0.7874 in.). For spindles having the test
and are not considered standard.
bearing and the support bearing in the same housing (CRC
1.3 This standard does not purport to address all of the
Type, Figs. 1-3)(Note 2) the internal construction of the
safety concerns, if any, associated with its use. It is the
spindle shall be such that the outboard support bearing, or both
responsibility of the user of this standard to establish appro-
bearings are free to float axially in the housing. In designs
priate safety and health practices and determine the applica-
where both bearings are free to float, the spindle shaft shall
bility of regulatory limitations prior to use. For specific
have a 0.508 to 0.762 mm (0.020 to 0.030 in.) free axial
warning statements, see 8.1.
movement or end play. The outboard bearing seat dimension
2. Referenced Documents should be 19.99 to 20.00 mm (0.7870 to 0.7874 in.).
2
5.1.1 The test unit design (Fig. 1 and Fig. 2) should be such
2.1 ASTM Standards:
that a finger spring washer produces a 22 to 67 N (5 to 15 lbf)
A 600 Specification for Tool Steel High Speed
7
3
thrust load on the floating outboard support bearing.
2.2 ABMA Standard:
5.2 Bearing Housing:
Standard 4, Tolerance Definitions and Gaging Practices for
5.2.1 For CRC Type Spindles—The bearing housing diam-
Ball and Roller Bearings
eter shall be 47.005 to 47.021 mm (1.8506 to 1.8512 in.) to
3. Summary of Test Method
give proper bearing mounting. Construction shall be such that
the test bearing is equipped with flush spacers or shields to
3.1 A grease lubricated SAE No. 204 size ball bearing is
confine the grease to the bearing. The spacers or shields shall
rotated at 10 000 rpm under light load at a specified elevated
have a clearance between the inside diameter and the shaft of
temperature. Tests are continued until failure or completion of
0.127 to 0.178 mm (0.005 to 0.007 in.) per side.
a specified number of hours of running time.
NOTE 1—This type of spindle is described in CRC Research Technique
4. Significance and Use
for the Determination of Performance Characteristics of Lubricating
4.1 This test method can be used to evaluate the ability of Grease in Antifriction Bearings at Elevated Temperature (CRC Designa-
tions L-35-54 and CRC L-35-62).
grease to provide adequate lubrication for extended periods of
1 4
This test method is under the jurisdiction of ASTM Committee D02 on Complete apparatus is available from Falex Corp., 1020 Airpark Dr., Sugar
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee Grove, IL 60554.
5
D02.G0 on Lubricating Grease. If you are aware of alternative suppliers, please provide this information to
Current edition approved Nov. 1, 2005. Published November 2005. Originally ASTM International Headquarters. Your comments will receive careful consider-
e1
5
approved in 1975. Last previous edition approved in 2002 as D 3336–97(2002) . ation at a meeting of the responsible technical committee, which you may attend.
2 6
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Pope Machinery Corporation GreaseTest Spindles No. P-1911 or P-6301A-HT
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM (Fig. 1) and No. P-7605-B (Fig. 2); and Falex Corp. spindles of the type shown in
Standards volume information, refer to the standard’s Document Summary page on Fig. 1 and Fig. 2 have been found satisfactory for this purpose.
7
the ASTM website. The sole source of supply of the apparatus known to the committee at this time
3
Available fromAmerican Bearing Manufac
...