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Fact Sheet
  • Unverified
  • Location:Punjab, India
  • Year of Establishment:1973
  • Business Type:Manufacturer, Distributor / Wholesaler
  • Turnover:Rs. 50 Lakh - 5 Crore
    (or USD 100 K - 1 Million)
  • Main Products:Power & Forging Screw Presses, Forging Screw Press
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Friction Screw Press(Down Stroke)

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Grewal Friction Presses are used for forging, stamping, embossing, pressing, sizing, bending, coining, shallow drawing, fire bricks, non-ferrous, hot and cold forging operations etc.

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Other Details

Grewal Friction Presses are used for forging, stamping, embossing, pressing, sizing, bending, coining, shallow drawing, fire bricks, non-ferrous, hot and cold forging operations etc. These Friction Screw Presses are provided with two friction discs and are balanced and mutually adjusted by secured nuts with a fly-wheel in between them.

The body of the press is of steel plate, fabricated with utmost care. It is of box-type design. All forces including twisting of press are taken care of properly. After welding the body of the Press is glowed free from tension, therefore, the usual danger of breakage is avoided.

The screw is made of high quality alloy steel and heat treated to have high hardness and elasticity. Flywheel revolution produces screw revolution and its movement is through bronze nut. Nut is pressed into press frame and is able to withstand greatest stress and to transmit it to the frame.

If desired a safety flywheel and pneumatic control device can be installed at extra cost. The construction of this fly wheel absolutely prevents the dangerous rebounding which can cause spindle breakage and further damages.

Common qualities of these presses are good construction. best material. simple and easy handling. The impact velocity approaches that of drop hammer. therefore, longer die life and low foundation cost is achieved. They are used wherever quality and safety are required.

SPECIAL FEATURES

The cost of machine is low compared to other makes and foundation expense is also minimum.

Dies of forging have long life due to high accuracy of the machine.

The cost of development , manufacturing and replacement of dies are much low.

Great forging accuracy is achieved because of the free stroke.

Additional energy can be applied to the same die impression by making several blows.

The heat contact time is considerably less than the crank type forging presses and knuckle joint type presses.

Cost of repair after years of hard usage is low. A semi skilled worker can operate the machine easily.  

Technical Specifications

TECHNICAL SPECIFICATIONS OF FRICTION SCREW PRESSES (DOWN STROKE)
Model Capacity in Tons Dia of Screw mm/Inch Stroke of Ram mm/inch Number of Strokes P-Minute

Size of Table mm/inch

 Table to Ram (Max.) mm/ inch Table to Ram (Min.) mm/ inch Bore in Table  mm/inch Bore in Ram (Shank Dia) mm/inch Dimension of Ram mm/inch Height mm/inch Appx. Wt. in Kgs. H.P. Reqd. / R.P.M.
GFSP-30 30 80/3.25 180/7 30 305x280 
12x11 		 330/13 150/6 75/3 40/1.50 225x225 9x9 2250/8'-4" 2000 5/1440
GFSP-50 50 100/4 200/8 25 380x355 15x14 355/14 150/6 75/3 40/1.50 300x300 12x12 2850 9'-4" 3000 7.50/1440
GFSP-100 100 125/5 280/11 20 475x450 19x18 450/18 175/7 100/4 50/2 350x350 14x14 3150 10'-4" 4000 10/960
GFSP-150 150 150/6 330/13 18 525x500 21x20 530/21 200/8 125/5 65/2.50 400x400 16x16 3750 12'-4" 6500 15/960
GFSP-200 200 165/6.50 355/14 15 550x525 22x21 560/22 200/8 125/5 65/2.50 425x425 17x17 4000 13'-4" 7500 20/960
GFSP-300 300 200/8 405/16 12 625x600 25x24 635/25 225/9 150/6 75/3 475x475 19x19 4400 14'-6" 11000 30/960
GFSP-400 400 240/9.50 460/18 10 700x700 28x28 710/28 250/10 150/6 75/3 525x550 21x22 4725 15'-6" 16500 40/960

(IN VIEW OF CONTINUOUSLY DEVELOPMENT WE RESERVES THE RIGHT TO MODIFY THE DESIGN AND DIMENSIONS WITHOUT NOTICE)

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