The tender for helical inline gear motor., helical inline gear motor to the model no. sk 973.1 - 112mp/4 tf for axle pusher chain conve yor of make m/s nord or substantially equivalent with following features: input speed(rpm): 1440; output speed(rpm): 21; gear ratio: 68.5; power (kw): 4; service factor: 1.8; output torque: 1817 nm; overhung lo ad: 25 kn; axial load: 22 kn; motor inverter speed range: standard line powered inverter capable; voltag e: 400/690 v; frequency: 50 hz; efficiency class: ie3; current 1: 7.85 a; current 2: 4.53 a; cosinus: 0.83; m otor duty: s1 - continuous; enclosure: ip55; insulation class - f; mounting pos - m1; housing material: cast i ron housing; type of housing: foot mount; output shaft: solid keyed shaft; output shaft (dia x length): 60 x120mm; output shaft material: standard; gearbox breather options: auto vent; gearbox sealing options: fkm seals; bearing design: standard bearings; motor cooling: tefc - totally enclosed fan cooled; motor t hermal protection: thermistor; motor option: fluoro rubber motor seals; height of output shaft center from bottom of base plate: 225 mm; mounting base plate details: minimum plate thickness: 50 mm; 04 holes of 22 mm dia each with square pattern; distance between holes along the shaft: 310 mm; distance between holes perpendicular to shaft: 250 mm; note: - (i) material of construction: fabricated steel housing (stress relieved) (ii) all gears shall be manufactured from steel forgings or rolled bar made from steel 17cr ni mo6 /18cr ni mo6 (case hardening steel). (iii) all gears shall be case hardened to 58-62 hrc and profile ground . (iv) output shaft shall be of en 9 material normalized to 201 bhn (min) (v) bearing used shall be rolling el ement type of make skf/ntn/timken/fag only. special conditions: above specified materials are the minim um required standard to be considered while designing the gear motor. - warranty period: 18 months aft er the date of delivery pl code : 670416480038 from Bangalore, Karnataka may be relevant for contractors, suppliers, vendors, manufacturers, consultants, service providers, startups, MSMEs, and other organizations involved in related products, services, or works. However, eligibility to participate depends on the qualification criteria specified by Rail wheel factory RWF in the official tender documents.
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