Repairing of crusher roll Tail end shaft, Drive Shaft Pan Plate and discharge suit of elecon (No.4) make feeder breaker at AADOCM, Dhori Area

Amount

Part A: Chain conveyor drive shaft assembly of Elecon F/B

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

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

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

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

Key new making for “14T” sprocket & duplex sprocket

Double row roller bearing No- 23034CK new provide & fixing.

Both end bearing greasing

Re-assembling all components of drive shaft as “14 T” 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 B : Chain conveyor tail end shaft assembly of Elecon make F/B

Dismantling of all components from tail end assembly as “14 teeth” segment sprocket – 02 nos.

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

Sealing collar new making & changing of bearing blocks for dust seal of both sides.

Double row spherical bearing roller new provide No. 23034CK providing & fixing.

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

Both end bearing 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 14 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 at siding F/B site with the help of gas cutting & welding.

Part C: Primary crusher drum roll assembly of ELECON make feeder Breaker

Dismantling of crusher drum C.R. Wall tana rods, support plates, bearing blocks, dust triple seals, side plate, safety coupling, 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 help of gas cutting, welding pulling, pushing with skilled fitter & labour at site.

Lifting of crusher roll (weight 5.5 MT) manually with the help of hyd. Jacks, screw jacks system & providing proper supporting for drawing out the damaged bearing block.

Damaged & worn out 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 at site.

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

Bearing sleeve new with check nut and lock washer for above 23048K bearing size

Double row roller bearing 23048K MB C3 new providing.

Bearing adjust cut ring new making for 23048K bearing & block

DE & NDE bearing 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 bearing and springs of flexible coupling.

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 flexible coupling, triple seal, drum roll shaft cleaning and after repairing greasing of bearing and springs of flexible coupling.

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

Re-assembling of bearing blocks, side cover, top cover, support plate, tana rods, safety coupling, main drive gear box, drive motor, block bolts, nut & bolts gear box & motor stopper with the help of gas set, cutting equipment, welding m/c, skilled fitter and labour at site.

Trail run testing & proper checking

Part: D Changing of Pan Plate of Elecon

Changing of worn out drive pan of chain conveyor of size 52" X 18" Removing old plate: (10" + 10") X 2 +52" = 92" New plate cutting: 52" +52"+18"+18"= 140"

Above welding: 18"+18"+52" X 2 layer = 176"

Changing of worn out sliding pan of chain conveyor of size 52" X 48" Removing old plate: (30" + 36") X 2 times = 132" New plate cutting: 52" +52"+48"+48"=200"

Above welding: (30"+36") X 2 layer = 132"

Changing of breaker pan of chain conveyor of 30mm thickness of 80" X 52" size Removing old plate : 80" + 80" +52" +52" = 264" X 2 times = 528" New plate cutting along with V making = 80"+80"+52"+52" = 264" + (52"+52") = 368"

Welding= 264" X 2 layer = 528"

Changing of standard pan of chain conveyor of 20mm thickness of 62" X 52" size X 4 nos Old plate cutting: 62" +62"+52"+52" = 228" X 4 nos = 912" New plate cutting with V making = 912" + (52"X8) = 1328"

Above welding: 912" X 2 layer = 1824"

Welding of chassis channel and joist for support of complete pan assembly Joist: 250 mm X 125 mm (10 nos) = 19" X 20 nos= 380" Channel: 250 mm X 80 mm (10 nos)= 16" X 20 nos= 320 "

New joist cutting 5 nos: 250 mm X 125 mm= 19" X 5 nos X 2 times= 380"

Changing of worn out hopper wall for primary crusher unit 62" X 36" (8 nos) = 1568", 80" X 36" (2 nos) = 464", 38" X 36" (2 nos) = 296" Cutting: 2328"

Welding: 2328" X 2 layer= 4656"

Changing of worn out reatining wall: Old plate cutting: 96" X 6" x 2nos = 792" New plate cutting: 96" X 6" x 2nos = 792"

Part E: Repairing of Discharge chute

Plate cutting from scrap dumper dala for replacement of damaged & worn out plate hopper, discharge chute, chute receiving chute etc where required. a. Gas cutting work in above job 1. 90’’ long X 72’’ width X 2 no= 648 2. 48’’ long X 24’’ width X 2 no X 2 side = 576

b. Welding of discharge chute plate with low hydrogen jointing electrode -101 " X 68", 240" X 60" and 68" X 21"

Crusher roll cover plate worn out plate cutting and size new plate cutting, fixing with angle and welding etc. a. Gas cutting work in above job

b. Welding work in above job

Bend flight assembly straightening with the help of hydraulic jack.

Part F: Repairing of receiving chute

Welding of receiving chute plate with low hydrogen jointing electrode - 20' X 6' - 2 nos

Cutting of old plates

Total impact of GST for the purpose of CTC