supply of helical inline gear motor. , helical inline gear motor to the model no. sk973.1-112mp/4 tf of make m/s nord or substan tially equivalent with following features: input speed(rpm): 1440; output speed(rpm): 15; gear ratio: 94.9 6; power (kw): 4; service factor: 1.3; output torque: 2519 nm; overhung load: 23.6 kn; axial load: 22 kn; motor inverter speed range: standard line powered inverter capable; voltage: 400/690 v; frequency: 50 hz; efficiency class: ie3; current 1: 7.85 a; current 2: 4.53 a; cosinus: 0.83; motor duty: s1 - continuous; e nclosure: ip55; insulation class: f; mounting pos - m1; housing material: cast iron housing; type of housing : foot mount; output shaft: solid keyed shaft; output shaft (dia x length): 60x120 mm; output shaft mate rial: standard; gearbox breather options: auto vent; gearbox sealing options: fkm seals; bearing design: standard bearings; motor cooling: tefc - totally enclosed fan cooled; motor thermal protection: thermisto r; motor option: fluoro rubber motor seals. note: - i. material of construction: fabricated steel housing (str ess 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 gro und. iv. output shaft shall be of en 9 material normalized to 201 bhn (min) v. bearing used shall be rolling element type of make skf/ntn/timken/fag only. special conditions: a) only authorised license manufactu rers of gear boxes or their authorised dealers shall participate in the tender and must furnish an authorized license or dealer certificate at the time of technical scrutiny. b) mtc and heat treatment shall be submitte d along with the supply. c)warranty: the material shall have a warranty of 12 months from the date of inst allation or 18 months from the date of supply, whichever is earlier d)above specified materials are the mini mum required standard to be considered while desiging the gear motor. [ warranty period: 18 months af ter the date of delivery ] ]