Repair and maintenance of staffa motor, fluid coupling, Replacement of bearing of secondary crusher roller and fabrication of different types of couplings etc. of 04 nos feeder breakers installed at Tarmi Siding of SDOCM Project.

Amount

Part-A Repairing, overhauling & rectification works with spares of two nos Staffa Gear Motor assembly as stand by for I.R & A.C make Feeder Breaker in respect of SDOCM. (M/C No-01 & 02)

Dismantling of staff 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.

Re-assembling, setting, time setting, commissioning & testing.

Miscellaneous work, supervision and contractors’ profit

Part-B FB 05 secondary crusher roller bearing & sleeve changing and repairing of drive pinion and driven pinion & arm of BWF make feeder breaker ( F/B No. 05)

Complete dismantling of pinion shaft from both side damaged bearing and guard coupling with the help of puller and gas heating, hammering and pulling by fabricated new support, channel and angle.

Damaged bearing block housing repairing by metal filling and machining as per outer size of bearing no -22234CCK.

Pinion shaft worn-out bearing seat repairing by metal filling with special type electrode and machining as per inner dia of bearing and step making etc required. (a) (3"long 56 row x 2 times+3" long x 56 row x 01time.) X 02 Side

Pinion shaft worn-out bearing seat repairing by metal filling with special type electrode and machining as per inner dia of bearing and step making etc required. (b) Pinion shaft bearing seat welding material machining on lathe machine

New bearing no-22234ck providing & fixing.

New sleeve with washer & check nut H2234 providing.

New bearing fitting in shaft with sleeve with the help new fabricated support and hydraulic jack.

Plumber block fitting with bore and bearing fitted with pinion shaft in bearing housing and grease filling and all bolt given tighting etc with alignment.

Repairing of drive pinion and driven pinion & arm a. Metal filing by welding method at abnormal tear bear gear pinion by special welding electrodes at site. (24" X 02-layer X 30 =1440.0) b. After metal filling hard facing by hard filling electrodes / Steel electrodes ( 24” x 02 layers x 30 = 1440.0) c. Grinding work of each tooth for giving proper shape & size as per req. (01 fitter X 760.00) + 01 helper X 632.00) dived by 06 nos.=232.0) So, rate of per teeth repairing = 1440 +1440+ 232 =3112.00

For repairing of driven pinion arm 'V' cutting work & multi-layer welding work by steel electrodes. Cutting work-32" X 04 nos. X 12.76= 1633.28 /- Welding work- 32" X 04 nos. X 04-layer X 15= 7680.00 /-

Repairing of drive & driven pinion housing. A. M.S plate cutting work for above job 1. base plate (10"+20") X 02 side X 02 nos. X 12.76=1531.20 2. R.B cutting: 32" X 12nos. X 12.76 = 4899.84 B. welding for above work. Base welding- 20" X 04 nos. X 04-layer X 15 =4800.0 RIB welding- 20" X 12 nos. X 04-layer X 15.0 =14400.00

Miscellaneous work, supervision and contractors’ profit

Part-C Fabrication of jaw coupling (Dog Type: SMD-09), PX-160, PX-140 and PX-120 for gear box and motor assembly of F/B 01, 02, 04 and 05

Cast Steel casting pair of Jaw Coupling set new making for Gear Box & attached Motor assembly.

C.I Casting for fabrication of a pair of PX-160 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-160 tyre respectively.

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 respectively.

C.I Casting for fabrication of a pair of PX-120 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-160 tyre respectively

Total impact of GST for the purpose of CTC

M/S BLUE STAR ENGINEERING WORKS (BID ID -1189151)