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.

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.
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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.