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. Provide the same type bearings for an alternate bridge structure as specified for the "as-designed" bridge structure.
Bearings. MEASUREMENT VALUE --------------------------------------------------------------------------------------------- Radial type
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. 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. 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.
B. Seller shall ensure grease lubricated bearings, except those specified to be factory sealed and lubricated, are fitted with easily accessible grease supply, flush, drain and relief fittings. Extension tubes shall be used when necessary. Grease supply fittings shall be standard hydraulic alemite type.
C. Seller shall ensure oil lubricated bearings are equipped with either a pressure lubricating system or a separate oil reservoir type system. Each oil lubrication system shall be of sufficient size to safely absorb the heat energy normally generated in the bearing under a maximum ambient temperature of 60 degrees C (140 degrees F) and shall be equipped with a filler pipe and an external level indicator gage.
D. Seller shall ensure all bearings are accessible to touch and located within 7 feet measured vertically from floor or working level or within 15 inches measured horizontally from stairways, ramps, fixed ladders or other access structures shall either incorporate bearing housings with sufficient cooling to maintain surface temperature at 65 degrees C (149 degrees F) or less for continuous operation at bearing rated load and a 50 degrees C ambient temperature or appropriate shielding shall be provided that will prevent inadvertent human contact.
Bearings. This item consists of furnishing and installing bridge bearings in accordance with the Contract Documents, this specification, and the manufacturer’s recommendations. If none is previously determined, the following specifications shall apply and be included into the project: Pre-formed fabric bearing pads shall be made from steel plates on fabric pads and sliding (PTFE) plates as manufactured by Con-Serv Inc. of Georgetown, SC. The fabric pads shall be composed of multiple layers of 8 oz. cotton duck impregnated and bound with high-quality natural rubber or equivalent. Bearing pads shall be designed to produce the specified thickness, after compression and vulcanizing, sufficient to withstand compression loads in accordance with the specified design method’s governing section for bearing design. Elastomeric and laminated elastomeric bearing pads shall be custom molded from neoprene or natural rubber. Laminated pads shall be reinforced with internal steel plates and vulcanize-bonded to alternating layers of the elastomer during the molding process.
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.
Bearings. 2.1 For each motor for all motions 1 Set 2.2 Main Hoist Gearbox 1 Set
Bearings. The MS7001(EA) gas turbine contains three journal bearings to support the turbine rotor and one dual direction thrust bearing to maintain the rotor-to-stator axial position. The bearings are located in three housings: one at the inlet, one in the discharge casing and one at the center of the exhaust frame. All bearings are pressure lubricated by oil supplied from the main lubrication oil system. The number 1 bearing (journal and thrust) is accessed by removing the top half of the compressor inlet casing, while number 2 is accessed during major overhaul. The number 3 bearing is readily accessible through the tunnel along the centerline of the exhaust diffuser. Bearing protection includes vibration sensors and drain oil temperature thermocouples.
