Grewal Forging Screw Presses are specially designed to make bolt-heads of any kinds of Bolts,Nuts, Rivets, Spikes, Motor parts, Half Shaft Axle, Engine Valves, Brass Parts, Cold bending jobs etc. These presses are friction drive Screw Presses on which the forging blows are applied in an upward direction. The main frame of the machine is of cast iron with tested hardness and generous proportions and is supported by necessary ribs.
The main spindle -carrying the friction discs runs on roller bearings fixed in brackets and bolted on the frame. Between,the brackets friction discs are mounted which drive the friction wheel. Thus imparting motion to a alloy steel screw fixed with keys and bronze nut to it. The screw nut is secured to the top cross head of frame -type ram. This ram moves axially upward when the screw which 'has no liner movement rotates. The bottom forging die is carried on the lower cross head of the ram while the top die is secured to a fixed bridge in the machine frame.
This bridge simultaneously locates the lower bearing (the screw pressure bearing). Due to these design principle. the forging forces do not act on the machine frame but are entirely sustained by the ram. The machine frame resists the low torsional forces generated by screw nut and flywheel. An ejector to bring out the pieces is provided at lower part of the ram. We can provide pneumatic , control system and Sliping Clutch at extra cost in which the flywheel is connected to the screw through spring loaded slipping clutch. Incase of over loading the clutch slips. thus avoiding costly breakdown on the press.
SPECIAL FEATURES :
Capacity in Numbers
|Capacity in Tons||Dia of Screw mm/inch||Stroke Lenght mm/inch||Max Length of job mm/inch||Max Dia of Job mm/inch||Side Table mm/inch||Stroke per Minutes||Total Height||H.P. Reqd./R.P.M.||Wt. in Kg. Apprx.|
|GFP-50||3||50||80 /3.25||300 /12||200 /8||12 /.50||215 /8.50||50||7' - 6"||5 /1440||1800|
|GFP-100||2||100||110 /4.25||400 /16||300 /12||19 /.75||240 /9.50||40||8' - 8"||7.5 /1440||3000|
|GFP-150||1||150||130 /5.25||460 /18||400 /16||31 /1.25||265 /10.50||30||10'||10 /1440||4000|
|GFP-250||0||250||150 /6||635 /25||510 /20||44 /1.75||290 /11.50||25||12'||20 /1440||6500|
|GFP-350||00||350||180 /7||760 /30||610 /24||56/ 2.25||320 /12.50||20||12' - 9"||30 /1440||10,000|
NOTE :(IN VIEW OF CONTINUOUSLY DEVELOPMENT WE RESERVES THE RIGHT TO MODIFY THE DESIGN AND DIMENSIONS WITHOUT NOTICE)
We are technically very strong, have vast experience in all kinds of power press such as forging Screw Presses (up stoke) Friction Screw Press (down Stroke), Steel fabricated frame, high speed presses, geared power presses, ungeared power presses, adjustable speed power presses, fixed stroke type, H type, inclinable, non inclinable type, mechanical, pneumatic presses, mechanical shearing machines are manufactured in all capacities.
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