Saudi Arabia Automatic Roll Up Shutter

Curtain Roller construction The pre-engineered curtain roller is made from one or more heavy gauge steel pipes suitably flanged to form a continuos barrel strong enough to support the curtain with an ample factor of safety. A low-stress spring counterbalance of proper capacity to balance the curtain in all positions is built into the roller.

Main bearings for the curtain roller are flange-type heavy duty ball bearings that make operation smooth and friction-free. These bearings are lifetime lubricated and sealed. The curtain hangers have an involute shape that allows the curtain to wind smoothly without lumping or distortion.

When hand chain or power operators are used the drive end of the curtain roller is coupled to the operator by means of a sprocket and roller chain drive - hand crank operators are usually direct coupled.

ROLLING DOORS As manufactured by The rollc factory Saudi Arabia shall be of service type and operated by means of either manual push-up, endless chain or motor. CURTAINS to be composed of interlocking slats of galvanized steel designed to withstand a windload of 20 Ibs. Per sq. Ft. Windlocks to be applied where required by opening span or heavier windload.

Galvanized steel slats to be from hot dipped with G90/G60zinc coating, and phosphate coated for paint adhesion. Strip to conform to ASTM standards. Thickness of slat as per the requirement is selected. BRACKETS to be not less 2.5mm thick steel plate for suspension of the dangle.

Brackets to be mounted to the structural wall angle to form a self supporting member, and form an enclosure to the hood. Brackets to be reinforced with welded steel bands for support of hoods. GUIDES To be composed of cold rolled galvanized steel minimum 2mm thick, of sufficient depth to retain curtain under normal wlndload.

For doors requiring windlocks, guides to be provided with windlock bars. Guides to be assembled with 10mm, diameter bolts spaced not over 1000mm on centers.

HOODS to be not less than 2mm hot galvanized phosphate treated steel formed to fit brackets, and reinforced top and bottom with stiffening returns, with intermediate hood supports where required by door width.

LOCKING provision for padlocks to be (slide bolts on push up doors) (chain holder on chain doors) (locking disc on crank doors) (self-locking gearing on motor operators).