Heavy duty pinch pyramid bending rolls

Bronx

Used BRONX Heavy Duty Initial Pinch Pyramid bending rolls. Year of manufacture : 1973.

MACHINE FORMERLY INSTALLED AT ROLLS ROYCE PLC IN DERBY UK. IMMEDIATELY FOR SALE AND NOW LOCATED IN BELGUIM WHERE IT CAN BE INSPECTED.
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SPECIFICATION

CAPACITY
Two sets of dimensions which are shown below as "Prebending & Rolling" and then "Rolling only".

Material Mild Steel Mild Steel
Tensile strength 28/32 tons/sq.in 28/32 tons/sq.in
Maximum width 11’(3350mm) 11’(3350mm)
Maximum thickness at this width 2” (50mm) 2½” (63.5mm)
Minimum inside diameter of rolled cylinder at maximum capacity
30’ (762mm)
37 ½’ (953mm)
Maximum thickness of plate when hot rolling (finished rolling temperature 850° C.)
4” (102mm)
5” (127mm)
Minimum inside diameter of rolled cylinder at maximum capacity hot rolling
40” (1016mm)
50” (1270mm)
MAIN PARTICULARS

Diameter of all rolls - 27” (686mm)
Body length of rolls - 11’2”(3403mm)
Rolling speed - 12 f.p.m. (3600mm/min)
Main drive motor - 150 H.P. Slip Ring Type
Two bottom roll adjusting motors, each - 50 H.P. Slip Ring Type
Combined operation of swing down bearing and top roll counterbalance
- Hydraulically applied
Hydraulic power pack motor - 10 H.P.
Electrical equipment to be suitable for operation on a supply of
- 400/440 volts, 3 phase, 50 cycles

CONE ROLLING ATTACHMENT:

To facilitate the rolling of taper or conical forms, a skid plate is fitted to the inside of the non-drive end housing.

ELECTRICAL EQUIPMENT

Motors:

Main Drive - 150 H.P. half hour rated – slip ring screen protected – foot mounted type.
Bottom Roll Adjustments - 50 H.P. half hour rated – slip ring screen protected – foot mounted type.
Hydraulic Power Pack Motor - 10 H.P. continuously rated – Squirrel cage – screen protected – foot mounted type.

Control Gear:

Main Drive - Drum type reversing control gear with 5 minute rated wire wound resistances, designed to pass 100% full load on the first notch or operating position in each direction. The controller will be fitted with off position interlock and limit switch rings where necessary.
Bottom Roll Adjustments - Drum type reversing control gear with 5 minute rated wire wound resistances designed to pass 100% full load on the first notch or operating position in each direction. The controllers will be fitted with off position interlock and limit switch rings where necessary.
Hydraulic Power Pack - Direct-on-line contactor type starter, operated from a maintaining type push button station.

Solenoid valves for operating cylinders are push button operated.

Note:

Full protection to be provided for all the above control gear by a circuit breaker, incorporating overload and no-volt protection.

FEATURES AND EQUIPMENT

Spare Roll included with the machine.

LENGTH TBA MM
WIDTH TBA MM
HEIGHT TBA MM
WEIGHT 95 tonnes

NOTE: The information contained herein is provided in good faith, but however due to unforeseen errors or omissions cannot be binding as to accuracy.