supply of 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 ] ]