tender for purchase of lab equipments for mech dept , lab equipments for mech dept , dc motor (d040) specifications: • 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) . , hydraulic cylinder(d041) specifications: 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 , hydraulic operated directional control valves (dcv) (d042) specifications: ● 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 , bearing with shaft assembly(d043) speicifications: ● 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 , coupling unit using driving and driven shafts using plummer block bearing unit (d044) speicfications: ● 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). , (a).sliding mesh gear box for dismantling and assembling (b) constant mesh gear box cut section (d045) specifications: (a) ● max transmitted power 1to1.5hp, ● torque capacity- 40 to 200nm, ● number .of speed 3 to 6, ● gear module 1.5 to 2, ● sliding mesh gearbox ● gearbox type- sliding mesh forward gears- 3 reverse -yes ● gear material -alloy steel ● lubrication- splash / oil ● gear teeth- spur ● typical gear ratios- 3.2:1 / 2.0:1 /1.3:1 ● input speed- 0-1800 rpm ● housing material- cast iron (b) ● constant mesh gearbox (cut section) ● gearbox type :constant mesh ● forward gears :4 ● gear teeth -helical / spur ● dog clutch type- sliding ● lubrication -oil sae 80w90 ● housing- cut section ● material -hardened alloy steel educational features- labeled parts.