Engineering Specification, 1200 ton Horizontal Stretching Machine (O/No. 60750)

1200 ton Horizontal Stretching Machine (O/No. 60750)

This page contains a précis of the Engineering Specification for the machine stated above (as originally supplied).

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Process:Stretching Aluminium Plates between the following sizes
Finished Plate Length:50′ 0″ maximum length finished.
Width:12′ 0″ maximum, 7′ 0 ” minimum
Construction:Horizontal type with fabricated steel frame and designed for overhead or side loading
Main Characteristics:Number of approach rams2
Number of main rams2
Combined Power of main rams1200 tonf
Stroke of main rams5′ 0″
Power of traversing rams20 tonf
Maximum width of jaws12′ 0″
Maximum opening of jaws3″
Floor level to grip centreline5′ 4″
Overall Dimensions:89′ 6″ x 17′ 6″ x 8′ 0″ high (without pumps)
Height above floor level 9′ 6″ clearance (without pumps)
Working Pressure:Main ram2 tonf/sq. in
Grips3000 psi
Lubrication:Hand Gun only
Tanks:One – 450 gallon main pump supply and filling tank
Two – 200 gallon grip pump supply and filling tanks
Pump Unite:Main pumps – two Towler Electraulic Patent high speed pumps, type 3H300, each directly coupled to a 45HP, 1440 rpm, screen protected squirrel cage motor
Grip pumps – two Towler Electraulic Patent high speed pumps – type A6/A1, each directly coupled to a 17 1/2 HP, 1440 rpm, squirrel cage motor
Controls:Towler balanced valves with hand operated oil servo control
Speeds:Main ram approach5.4 in/s
Main ram stretching0.212 in/s
Main ram return2.32 in/s
Grips approach1.0 in/s (approx.)
Grips return0.8 in/s (approx.)
Grips pressureUp to max. in 4 seconds. approx.

This specification was kindly provided by Rhodes Interform

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