repairing, rectification and maint. of Atlas Copco make feeder breaker with spares (machine no 02) installed at Tarmi Siding of SDOCM

Amount

Part A: Repairing of Primary crusher drum roll assembly.(zero value)

Dismantling of crusher drum C.R. wall tana rods, support plates, bearing blocks, dust triple seals, side plate, C.R. Wall cover, block bolts, drive end motor, main drive gear box complete assembly for removing & shifting of drum roll for changing of damaged bearings with the help of gas cutting, welding pulling, pushing work at site.

Lifting of crusher roll (weight 5.5MT) manually with the help of Hydraulic Jacks, Screw Jacks system & providing proper supporting for drawing out the damaged bearings, sleeves.

Damaged DE & NDE main bearing removing by pulling with the help of gas cutting.

Drum roll shaft damaged and worn-out bearing seat repairing by Full round metal filling by steel welding method & roundness grinding & shaping as required and polishing by failing & amri paper with the help of flexible grinding machine work at site.

C.S. triple seal repairing by its I.D full round welding and machining, groove cutting as per drum roll shaft size for dust sealing of bearings.

U/S bearing sleeve new making with check nut and lock washer for above 23048K bearing size in degree shape.

Bearing adjusting cut ring new making for 23048K bearing & block.

DE & NDE bearings fitting and setting in shaft at site with misalign drum roll re-alignment & balancing by water level as required including setting dust triple seal of bearings at the time of fixing drum roll work at site.

Bearing block lower and upper body bearing seat and dust triple seal seat shaping & cheeps cleaning by grinding as required and its greasing point checking, cleaning, tapping, grooving.

Both end main triple seal, drum roll shaft cleaning and after repairing greasing of bearings.

Re-assembling of bearing blocks, side cover, top cover, support plates, tana rods, main drive gear box, drive motor, block bolts, nuts bolts gear box & motor stopper with the help of gas set, cutting equipment, welding arrangement work at site

Trail run testing & proper checking.

Part B: Repairing of conveyor chain Drive shaft assembly as standby.(zero vlue)

Dismantling of all components from drive shaft assembly complete in part-part for rectification & repairing.

EN-24 steel shaft new making and size with bearings & sprocket seats, key ways.

Repairing of bearing block sealing collar seat by grinding & shaping.

Bearing block dust seal new making & changing for dust sealing.

Bearing distance cut ring new making as required size for adjusting of bearing.

Key new making for “12T” sprocket & duplex sprocket

Double row roller bearing No-23220K new provide & fixing.

Sleeve with check nut & lock washer new provide & changing for bearing.

Both end bearing greasing.

Re-assembling all components of drive shaft as “12T” & duplex chain sprockets by hydraulic press machine & setting of bearings, blocks,

Drive shaft assembly setting, commissioning with crusher body & trail run testing at siding F/B site with the help of gas cutting & welding.

Part C: Repairing of Chain Conveyor Tail End shaft assembly as standby.(zero value)

Dismantling of all components from tail end assembly as “9 teeth” sprockets- 2nos & bearings with sleeves, blocks, dust seals.

EN-24 steel shaft new making and size with bearings & sprocket seats, key ways.

Sealing collar new making & changing of bearing blocks for dust seal of b/s- 2x2 =

Double row roller bearing No-23220K new provide & fixing.

Bearing distance cut ring new making as required size for adjusting of bearings.

Both end bearings greasing.

Repairing of bearing block sealing collar seat by grinding & shaping.

Tail End sprocket damaged & worn-out tooth’s repairing by its height increasing, width increasing, hard facing & also sizing as per required of conveyor chain links

Re- assembling all components of Tail End as 9 teeth sprocket by hydraulic press machine & setting of bearing, sleeves & blocks.

Tail End shaft assembly setting, commissioning with crusher body & trail run testing at siding F/B site with the help of gas cutting & welding.

Tail End side Grease Cylinder assembly complete dismantling, full overhauling, cleaning, shaft alignment checking, straightening, polishing, repair seal kit new provide & fixing, re-assembling.

Tail End point grease Hose pipe assembly size- 3mtr x 3/8” R2 new provide & fixing.

Part D: Maintenance & Rectification work of Running Gear Box SBH 320F, Shanti make, Sl.No- JH 01197, Input-1450 RPM, Output Ratio- 16 : 1(zero value)

SBH 320F Shanti make gear box complete assembly dismantling with the help of pullers & hydraulic jacks in part-part for maintenance work.

Gear box all pinions, bearings, bodies, covers complete cleaning & washing for complete checking.

Gear box lower & upper body damaged and worn-out both end bearing seats of input shaft bearing housing, 2nd motion bearing housings repairing works by C.I metal filling by welding method & grinding and shaping as per bearing size.

Input shaft bearing housing new making.

2nd Motion shaft bearing housing cover new making as per sample and size with cast steel casting, machining, drilling, bearing press color making, grooves cutting.

Gear Box output shaft bearing housing cover new making as per sample and size with cast steel casting, machining, boring, drilling, bearing press color making, grooves cutting.

Input shaft oil seal new providing & fixing.

Output shaft oil seal new providing & fixing.

Gear box repair kit like as ‘O’ ring, gasket packing, lock, body threads cleaning, surface polishing, bolts, nuts.

Complete gear box assembly all pinions re-fitting, assembling, tightening, bearing setting, pinions timing setting, matching & commissioning.

Part E: Repairing of Main Line Hydraulic Pump assembly as standby(zero value)

Complete repairing & full overhauling of conveyor chain drive main line hydraulic pump assembly with changing & repairing its attachment.

Part F: Repairing of hydraulic cooler radiator assembly(zero value)

Hydraulic cooler radiator assembly complete dismantling, up & down tank cutting, complete washing & cleaning in side by oil and outside washing by water and after cleaning up & down tank re-soldering by ranga stick and re- assembling with machine of A.C. make F/B work at site.

Part G: Repairing of Two nos of Staffa Hydraulic Gear Motor assembly as standby.(zero value)

Dismantling of staffa hydraulic motor assembly & cleaning of its internal components.

Replacement of repair seal kit with material.

Repairing of crank shaft front & rear both bearing seats

Changing of valve spool

Changing of shim kit.

Replacement of bearings front & rear

Repairing of mounting kit.

Staffa Body holes thread cleaning by tapping & new H.T Allen bolts new provide & fixing with spring washer.

Re- assembling, timing setting, commissioning & testing.

Part H: Repairing & fabrication work of couplings for drive motor, gear box & drum roll(zero value)

C.I Casting for fabrication of a pair of PX-140 size tyre coupling set, machining, grooving, drilling for bolt and nut, boring, key way cutting as per sample and dimension for Motor & Gear box of crusher drum roll assembly including providing PX-140 tyre.

Crusher drum roll & drive gear box pair of flexible spring coupling broken & damaged greed spring slot gas cutting, place cleaning by grinding, “V” grooving, new slot making as per required shape & size of grid spring by hard metal and setting with coupling & full welding by special steel jointing electrodes and machining on lathe machine with proper alignment. (02nos spring coupling set)

Flexible spring coupling centre bushing opening with the help of hydraulic press machine and making new Gun metal bushing by raw casting of size-230mm O.D X 90mm I.D X 250mm length and machining as per required std size with grooving, fixing, locking and final machining with alignment.

Provide and fixing Grid spring (20nos of set) for flexible spring coupling of crusher drum roll & drive gear box couple.

Total impact of GST for the purpose of CTC