tender for supply of equipment items- 1 dc motor:type: dc shunt motor (dismantling model) power: minimum 0.5 hp voltage: 220 v dc speed: 1500 rpm poles: 4 pole construction: laminated stator salient poles accessible armature features: cut section / open type suitable for dismantling and reassembly 2 hydraulic cylinder: bore diameter: 50 mm stroke length: 250 mm working pressure: 160 bar cylinder tube: honed steel piston rod: hard chrome plated seals: standard industrial seals end caps: steel supply: mounted on training base suitable for dismantling and inspection 3 hydraulic operated directional control valves (dcv):type: manual spool type dc valve configuration: 4/2 way size: ng06 (cetop 3) rated pressure: 210 bar flow capacity: 20–40 lpm body: hardened steel / cast steel spool: ground and hardened ports: clearly marked (p, a, b, t) supply: mounted on training plate suitable for dismantling and study 4 bearing with shaft assembly :type: dismantling and assembly teaching unit shaft diameter: 30 mm shaft material: en8 steel bearings: deep groove ball bearing (6205 / 6206) housing: cast iron locking arrangement: circlips lock nuts end covers mounting: bench-mounted / frame-mounted unit 5 coupling unit using driving and driven shafts using plummer block bearing unit :the plummer block housing material: cast iron (grade fg 200 or equivalent). type: sng or snl series (split-type housing). sealing: felt seals or v-ring seals (to demonstrate lubrication retention). lubrication: provided with a grease nipple at the top center for manual lubrication practice. the bearing type: self-aligning ball bearing (1200 series) or spherical roller bearing (22200 series). bore diameter: standard 25mm or 30 mm. shafting and coupling shaft material: ground carbon steel (en8 or en9) for high surface finish. coupling type: flexible coupling: to demonstrate the bearings ability to handle slight misalignment. rigid flange coupling: to demonstrate traditional direct connection. driving/driven setup: one shaft connected to a small electric motor (driving) and the other to a brake drum or load (driven). please enable macros to view boq information = limited