tender for revolving chair - the cushioned seat assembly consists of seat base moulded in glass-filled poly-amide moulded polyurethane foam&upholstered with high stretch knitted polyester fabric.the cushioned back assembly consists of back inner moulded in polypropylene in-situ moulded with polyurethane foam&upholstered with high stretch knitted polyester fabric.back size-45.5cmx53.0cm(h)seatsize-48.5cm(w)x49.0cm(d)high resilience(hr)polyurethane foam the hr polyurethane foam used in seat and back cushion is moulded in density min 48 kg/m3 and hardness load 152 kgf as per is:7888 for 25compression.the cantilevered seat offers impact cushioning while sitting and synchronises with the back movement during posture changes.thesshaped spines moulded in high strength glass-filled poly-amide and the spine connector moulded in glass-filled poly-amide form the back-spine structure involved in multi-dimensional recline motion.the variable tilt angle recline motion can be adjusted with 3 position tilt limit feature which should be inbuilt in seat base and the tension(return force)should be user weight dependent.adjustable armrests the assembly consists of armrest housing sliding over the armrest structure,both moulded in glass-filled poly-amide.the height adjustment feature should be button operated having adjustment of 6.60.5cm.the armrest top should be made up of integral skin pu moulded over plastic inner moulded in glass-filled poly-amide.pneumatic height adjustment the seating height can be adjusted with a pneumatic gas-lift having an adjustment stroke of 9.2 cm the pedestal should be injection moulded in glass-filled poly-amide and fitted with 5 nos.twin wheel castors.the pedestal should be 66.00.5 cm.pitch centre diameter and 76.0cm with castors.twin wheel castors 5 nos.
