Industrial seal self study guide - SKF.com

73. More bearings fail from the entrance of foreign material than from loss of lubricant.
❑ True ❑ False
74. Bore material must be metallurgically compatible with the seal type that is used.
❑ True ❑ False
75. When examining for STBM, the lip area with the least wear indicates the direction of
shaft misalignment.
❑ True ❑ False
76. Axial clamp seals are recommended for large diameter applications where there is a
need for two seals but room for one, as in steel and paper mills or logging operations.
❑ True ❑ False
77. When using a wooden workpiece for flush installation of a seal, it is acceptable to use
a steel hammer.
❑ True ❑ False
78. A direct blow on one side of the seal distorts the shell and can cause the lip to be
pressed against the shaft.
❑ True ❑ False
79. Speedi-Sleeve’s wall is so thin that the original size seal can still be used.
❑ True ❑ False
80. Revolutions per minute (rpm) is generally a better indication of seal performance than
feet per minute (fpm).
❑ True ❑ False
81. Shaft and bore diameters should match those specified for the seal selected.
❑ True ❑ False
82. SKF’s “WasteWatcher” seal inventory control system helps control costs of replacement
seals.
❑ True ❑ False
83. The overall axial dimension of the lip seal assembly is called seal width.
❑ True ❑ False
84. Garter spring damage requires careful inspection, often necessitating
calling in an “expert.”
❑ True ❑ False
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