Closed
30
ZPC/HPS/DPA/20605
Single Lot
Direct Procurement Method
Non Consulting Services
Zimbabwe PPDPA Act Rules
Internally Generated Funds
HWANGE POWER STATION
Mechanical and Structural Engineering (incl. steel fabrication, steel roof and coverings, machining, sewage management, dewatering, etc.)
15 Day(s)
ZIMBABWE POWER COMPANY
13-May-2025 09:09 AM
REMETALLING OF ID AND FD BEARINGS AT HWANGE POWER STATION
| Project Name: REMETALLING OF ID AND FD BEARINGS AT HWANGE POWER STATION |
| Description: REMETALLING OF ID AND FD BEARINGS AT HWANGE POWER STATION |
| Item No. | UNSPSC | Lot Name | Lot Description | Quantity | Unit of Measure |
|---|---|---|---|---|---|
| 1 | 11101704 | Steel | Stage 2 FD bearing re-metal and machine to standard dimensions the supplied 2 off white metal bearings s/n rh bp 9727/180-6 hb 1511150 1m wmb 00198 rl bp 9727/180-6 hb1511150 1m wmb001998 bp 9727/180-6 hb 151150 wmb 001997 pressure test the water jackets prior to remetalling bore to suit a a standard shaft journal of 180mm with minimum clearance of 0.28mm bore size 180.217/180.28mm (nb min/max) machine oil wedges,washways and thrust grooves on thrust faces thrust faces overall length =285.45/285.55mm ensure the oil guides are cleared of whitemetal spillages. bonding to be tested by independant inspection authority and certificate issued ZPC TO CARRY OUT INSPECTION BEFORE DISPATCH | 2 | Each |
| 2 | 11101704 | Steel | Stage 1 ID fan bearings Recondition supplied 200mm white metal water cooled spherical seated bearigs 1.copy the oil wedges, oil wash ways thrust faces grooves from a reasonable sample.angles depth and profiles 2.de-metal to remove old white metal 3.pressure test to detect any external pr internal flaws before remtalling 4. recast the white metal using jupiter 2 5.thrust faces oil grooves=6@60deg equi-space as per drawing 7.ensure the matching halves are bolted on with fitted bolts with match marks during the machining processes 8.NDT Certificate to be issued and final inspections to be verified by purchaser prior to dispatch to hwange power station.thus to ascertain the correct bonding of the white metal to the casting or parent metal 9.ensure the oil rings guide grooves are clean upon completion of all reconditioning operations | 2 | Each |
| 3 | 11101704 | Steel | Stage 1 ID/FD fan motor bearings 1off 110mm diameter sleeve bearing to fit on EFNLB gr.11 w-diameter 110 motor bearing housing.each to come complete with oil thrower ring locating bearing bearing cylindrical OD 200.15mm bearing spherical seat diameter 212.45mm bearing height 100mm bearing rotation stop pinholes diameter-12.0mm.located in the spherical seat diameter bearing rotation stop pin holes distance between centres-85mm. thrust face to thrust face distance for locating bearing-100mm The bearing housing fits onto a 430kw GEC squirrel cage induction motor frame size JKD 450/6 NB* these dimensions have been taken from a used and probably remetalled bearing.As a result , the cylindrical outside diameter and spherical seat dimensions could have been altered in some way during machining after re-metalling.use them as a guide to pick the standard bearing | 2 | Each |