HOPPER ASSEMBLY:
Provide one (1) rebuilt high pressure hopper assembly, including pneumatic hopper ram cylinder, new floating weight and two (2) new pneumatic cylinders for actuating hopper door, piston, piston rod, pins and bushings. Hopper to have .006" hard chrome plated interior, also chrome plated floating weight, 1/8" side clearance. Includes tell tale position indicator. Feed hopper shall be made interchangeable to operate either left or right of body when
looking from water end.
END FRAMES:
Provide two (2) rebuilt heavy duty end frames, precision machined and examined for any possible imperfections. Each end frame is supplied with new hardened and chrome plated wear plates, both in the throat area (floating weight area) and in the lower section to insure proper fit in the drop door region. End frames will be drilled for oil injection or thermocouple.
BEARINGS:
Provide four (4) new SKF or Timken roller bearings. The bearings will be fitted to end frames and rotors, and secured with all necessary snap rings and pins. Bearings to be grease packed.
ROTOR END PLATES:
Provide four (2) new rotor end plates, hardened and hard chrome plated to .006". Precision ground to 16 R.M.S. surface finish.
DUST STOP ASSEMBLIES:
The dust stops will be new and of the face design, including (4) studless alloy hard surfaced rotor end plates & four (4) hard surfaced split gland rings. Drains will be provided to carry away excess dust stop lubricant.
DUST STOP LUBRICATION:
Provide one (1) new Manzel type dust stop lube system.
DRILLED SIDES:
Provide two (2) rebuilt drilled sides. Liners to have a minimum of 600 Brinell hardness. Liner bore to be machine ground. Sides to be welded with Stellite, hard facing, and re-machined to proper clearances.
ROTORS:
Rotors will be 1025 cast, cored the entire length for cooling purposes. The rotor tips will be coated with Stellite #1, 4" on the leading edge and 2" on the trailing edge, with Stellite also on the rotor body ends. The remainder of the rotor bodies will be fully built up with hard face material and hard chrome plated to .006" thickness. Rotors to be two (2) wing type.
BODY FIT BOLTS:
To be precision ground, to insure close alignment.
ROTARY JOINTS:
Provide and install three (3) new Barco type rotary joints for water cooling.
DISCHARGE DOOR ASSEMBLY:
The discharge door is to be of the hinged drop door type, with new self-aligning, curved design door top, precision machined, flame hardened and chrome plated .006"-.008". The door will accommodate either water cooling or steam heating. It will have been hydrostatically tested to 500
PSI and steam tested to 125 PSI.
DISCHARGE DOOR POWER:
A rebuilt oil hydraulic rotary actuator (Rotac) shall be furnished to power the discharge door itself. It will be positioned at the end of the door shaft, mounted on the end frame, and positioned on the right hand side on
the water end of the mixer.
HYDRAULIC POWER SUPPLY:
The rebuilt hydraulic pump package of a Racine, or Vickers, variable volume pressure compensated pump with reservoir, totally enclosed fan cooled motor, piston type accumulator heat exchanger, valves, gauges and necessary automatic regulating components.
DOOR LATCH ASSEMBLY:
The door latch pin shall be new (discharge door locking device) and be operated by a 5" high pressure hydraulic cylinder. Unit shall be equipped with a safety latch assembly housing, and to be operated by discharge door power supply.
LUBRICATION SYSTEM:
Provide one (1) new self contained Trabon type grease lubrication system, as well as all necessary piping.
LOW SPEED COUPLINGS:
Provide (2) low speed couplings to connect in a unidrive configuration.
REDUCER:
Provide one (1) rebuilt Lufkin D890MS, Banbury duty unidrive gear reducer, ratio 21.75:1, catalog 3010 HP, service rated 1505 HP, service factor 2.00, ball bearing type.
GUARDS AND COVERS:
Provide all required coupling guards and gear covers.
BASE:
Provide one (1) #F270 fabricated bedplate, manufactured from low carbon plate, class A welded, stress relieved after welding. Grit blasted and precision machined.
MOTOR:
Provide one (1) rebuilt Westinghouse AC Banbury duty motor, 1250, 1200 RPM, 2300/3/60, and starter control.
ROTOR SPEEDS:
Drive rotor speed shall be fixed at 55 rpm.
