Bearings. Provide the same type bearings for an alternate bridge structure as specified for the "as-designed" bridge structure. Provide an expansion dam support system as indicated for the "as-designed" bridge structure unless otherwise specified in PART B, "SPECIAL DRAWINGS AND SPECIAL DESIGN REQUIREMENTS".
Bearings. Motors shall be equipped with anti-friction type thrust and guide bearings. Angular contact ball thrust bearings shall be used in preference to spherical roller thrust bearings wherever possible. Angular contact ball thrust bearing shall be self cooled wherever possible. Water cooled angular contact ball thrust bearings shall be used only when approved by District. Spherical roller thrust bearings shall be water cooled. Bearings shall be of sufficient capacity to carry all static and dynamic up and down thrust loads, both momentary and continuous, imposed by the pump. Bearings shall provide minimum 3 year B10 life (26,300 hours) based on continuous design thrust load or minimum 1 year B10 life (8770 hours) based on maximum pump shutoff thrust load, whichever is greater. Bearings shall also provide for minimum momentary upthrust equal to 30% of rated downthrust.
Bearings. Three deep-groove, anti-friction ball bearings shall be located outside the pumping chamber, which shall give support and proper alignment to the impeller shaft assembly. The bearings shall be oil or grease lubricated, completely separated from the water being pumped, and shall be protected by seal housings, flinger rings and oil seals.
Bearings. Bearings shall be inspected for damage. Removal and installation of bearings shall be done in accordance with the manufacturer's requirements. New bearings shall meet the original specifications.
Bearings. MEASUREMENT VALUE --------------------------------------------------------------------------------------------- Radial type (2) Tilt Pad --------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- Thrust type (1) Tilt pad ---------------------------------------------------------------------------------------------
Bearings. A. Unless otherwise specified, Seller shall ensure equipment bearings are oiled or grease lubricated, ball or roller type, and designed to withstand the stresses of the service specified. Each bearing shall be rated in accordance with the latest revisions of ABMA standards for Load Ratings and Fatigue Life for Ball and Roller Bearings. Unless otherwise specified, equipment bearings shall have a minimum L‐10 rating life of 50,000 hours. The rating life shall be determined using the maximum equipment operating speed.
Bearings. All bearings shall be of ample surface area and, for large pumps, shall be of the automatic oil-lubricated sleeve type. On pumps utilizing ball or roller bearings, the inner race shall be fitted directly onto the shaft and reliably fixed by a shoulder on the shaft. Bearings on vertical-shaft pumps shall be so spaced as to prevent shaft whipping or vibration under any mode of operation. Bearing housing on horizontal shaft pumps shall be so designed that the bearings can be replaced without removing the pump or motor from its mounting. Bearing housing on horizontal shaft pumps shall be effectively protected against the ingress of water, pumped fluid, and dust with suitable non-ferrous deflectors. All bearings oil xxxxx shall be fitted with visual oil level indicators and local thermometers. Means of draining bearing housings shall be provided.
Bearings. A. Unless otherwise specified, equipment bearings: oil or grease lubricated, ball or roller type, designed to withstand the stresses of the service specified. Each bearing: rated in accordance with the latest revisions of ABMA 9 and ABMA 11. Unless otherwise specified, equipment bearings shall have a minimum L-10 rating life of 50,000 hours. The rating life: determined using the maximum equipment operating speed.
Bearings. 1. Sized to withstand maximum radial or axial load carried by shafts for continuous duty. 2.
Bearings. Bearings shall be roller type except that motor bearings shall be of ball or xxxxx r type only. For rope drums, LT and CT drives, self -aligned roller bearings shall be used. All anti -friction bearings shall be of approved brand. Bearing housings shall be of split type or so designed to permit easy removal of the shaft. The design shall b e such that there is no ingress of dust to enter and oil or grease should not leak out from it. Drip pans shall be provided to accept accidental leakage and drippings. Bearings shall have minimum life expectancy of 7000 working hours.
