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| 1 | Part-A (Secondary crusher drum roll assembly repairing, rectification & maintenance with spares of Both roll-No-01 & 02) |
| 2 | Dismantling of secondary crusher drum roll drive motor, drive pulley, adjusting studs,, block bolts, cover bolts with the help of gas cutting, welding, hydraulic jacks, pulling, pushing with skilled fitters & labour. |
| 3 | Lifting of secondary crusher roll manually with the help of Hydraulic Jacks, Screw Jacks system and providing proper supporting for drawing out the bearings of both drum roll. |
| 4 | D.E & N.D.E main bearing removing by pulling with the help of pullers of both drum roll. |
| 5 | Drum roll shaft damaged & worn-out bearing seat repairing by full round steel metal filling by welding method & roundness grinding & shaping as required & polishing by failing & amri paper with the help of hand grinding machine at site of both drum roll both side. |
| 6 | Double raw roller bearing No-23136E1A.M.C3 new provide for drum roll(out of 04nos bearing) |
| 7 | D.E & N.D.E side C.S casting bearing housing inner & outer cover new making with casting, machining, drilling, dust sealing groove making tapping both side of both drum roll. (out of 08nos housing) |
| 8 | D.E & N.D.E side C.I. Casting Inner & Outer side bearing dust seal new making with casting & machining, groove cutting both side of both drum roll. |
| 9 | Damaged & worn-out bearing housing back side dust seal seat, color, diameter increasing by welding full round as per required & machining, polishing, alignment setting for DE & NDE of both drum roll. |
| 10 | D.E & N.D.E bearings re-fitting and setting in shaft at site with misalign drum roll re-alignment & re-shifting with the help of hydraulic jacks of both roll. |
| 11 | Both end main bearing cleaning, dust seal seat cleaning, drum roll shaft cleaning and after repairing greasing of bearings with housing of both drum roll. |
| 12 | Crusher drum roll housing/block adjusting jack screw shaft new making as per required size & measurement in full thread with one end seat & other end head for D.E & N.D.E side of both drum roll. |
| 13 | Heavy duty check nut & lock nut new making for above block jack screw of both roll. |
| 14 | 30mm x100mm H.T block bolts new with nut and spring washer for both roll. |
| 15 | Re-assembling of blocks, bearing housing cover, cover bolts, adjusting jack screw, drive pulley & proper alignment setting with the help of gas cutting, welding, chain block, hydraulic jacks, pulling, pushing with skilled fitters & labour of both secondary crusher drum roll. |
| 16 | Fabricating Hardness metal picks as per required size & shape and also hard facing welding and fixing with both secondary crusher drum roll with full triple layer welding by special jointing steel electrodes |
| 17 | Part-B (Repairing, rectification, maintenance with spares of Primary crusher drum roll assembly.) |
| 18 | Dismantling of primary crusher drum roll support plates, drive and non drive end bearing blocks, dust seals, side plate, C.R. Wall cover, block bolts for removing & shifting of drum roll for changing of damaged bearings |
| 19 | Bearing removing by with the help of puller. |
| 20 | Lifting of crusher drum roll manually with the help of hydraulic and screw jacks system along with fabrication of supports for resting of 5.5 M.T crusher drum firmly at a particular height for safe working. |
| 21 | Bearing adjusting cut ring new fabrication as per the dimensions or requirement of bearing & bearing block. |
| 22 | Double Row Roller Bearing No-23044K.MB.C3 new providing. |
| 23 | New sleeve with check nut & lock washer as per the size of 23044K.MB.C3 Bearing. |
| 24 | Both end bearing fitting & setting in shaft at site with drum roll re-alignment & balancing by water level & spirit level as per the requirement, including setting of dust seal of bearings at the time of fixing of drum roll. |
| 25 | Damaged & worn-out both end bearing housing back side dust seal seat & bearing color repairing work by full round metal filling using welding method, machining, polishing work for getting actual size as per the dimension. |
| 26 | Re-assembling of primary crusher drum roll both end bearing housings, bearing blocks, side cover, top cover, support plates and block bolts. |
| 27 | Total impact of GST for the purpose of CTC |
