Crown 2.5" 36:1 75HP AC High Heat

Description

Excellent Condition
Rebuilt to specification by Crown in 2015
Barely used since
Decommissioned for larger machine
APPLICATION INFORMATION
MATERIALS: Compounding High Temperature materials
FEEDSTOCK FORMS: Various
PROCESS: Extrusion
EXPECTED RATE: 10-200 Kgs/hr.
POWER SUPPLY: 480VAC/3PH/60HZ
EXTRUDER SPECIFICATION: [2.5”] DIA; [36:1] L/D RATIO
A. BASE FRAME
1. Unitized welded steel construction
2. Fabricated steel barrel supports
3. Lifting Provisions
4. 40” – barrel centerline
B. GEAR REDUCTION UNIT
1. Fabricated steel housing with thrust assembly
2. Heat treated double helical gears
3. Spherical roller shaft support bearings
4. Tapered roller thrust bearing
5. Oversized HP rating
6. Required total gear ratio to provide 140 screw RPM
7. Forced lubrication system
External motor driven pump
Shell and tube heat exchanger
External filter and strainer
Electrically interlocked flow switch
Thermometer
8. Mechanically protected with a special torque-limiting clutch
C. FEED SECTION
1. Fabricated steel construction
2. Rectangular feed opening on the screw centerline
3. Jacketed and pre-piped for water cooling
D. CYLINDER BARREL
1. Alloy steel cylinder with bimetallic lining
2. Downstream clamp flange
3. Designed for 10,000 PSI maximum pressure
4. Barrel is tapped for:
a. Thermocouples
b. Pressure indicator
CROWN 2.5” Single Screw Extruder $59,000.00
5. Rupture disc
E. FEED SCREW
1. 4140 heat-treated forged carbon steel
2. [Multi] stage screw properly designed
3. Modification will be supplied as follows:
a. 001" to .0015" chrome plating Colmonoy #56 hard surfaced flight land
F. HEATING/COOLING SYSTEM - WATER COOLED
1. Five barrel zones
2. Resistance type, cast bronze heaters with cast-in Incoloy stainless steel cooling coils
3. Each zone is equipped with thermocouples
4. Closed Loop Cooling System
a. Stainless steel tank
b. Shell and tube heat exchanger (oversized)
c. Motor driven pump
d. Solenoid actuated valves and needle valves
e. Completely prepiped
5. Electrical equipment is prewired NEMA Type 12 terminal box
G. BASIC EXTRUDER POWER SUPPLY DRIVE - AC DRIVE: [75 HP]
1. Standard Features
a. UL and cUL (07 requires option selection)
b. 4 line by 20 Character Multilingual Alphanumeric Display
c. Intelligent Start-Up Assistant
d. Motor ID Run
e. Motor Control
(1) Direct Torque Control (DTC)
(2) Scalar Control
f. Adaptive Programming with fifteen (15) logic controller type function blocks
g. Two (2) programmable Analog Outputs
h. Three (3) programmable Analog Inputs
i. Seven (7) Digital inputs, (6) Programmable & (1) dedicated Start Interlock
j. Adjustable filters on Analog inputs and outputs
k. Input Speed Signals
(1) Two (2) Current 0 (4) – 20 mA
(2) One (1) Voltage +/- 0 (2) – 10VDC
l. Start/Stop
(1) 2 wire control (dry contact closure)
(2) 3 wire control (momentary dry contacts)
m. Adjustable Current Limit
n. Adjustable Torque Limit
o. Nine (9) Supervision Functions
p. Electronic Reverse
q. DC Magnetizing Start (provides max starting torque)
r. Flux Braking
s. Fifteen (15) Preset Speeds
t. Self-Tuning Speed Controller
CROWN 2.5” Single Screw Extruder $59,000.00
u. Automatic Reset Customer Selectable
v. Two (2) Independently Adjustable Accel and Decel Ramps
w. Ramp to Stop or Coat to a Stop
x. Maximum Frequency Programmable up to 300 Hz.
y. Integral Programmable PID Setpoint Controller
z. Master/Follower
2. Programmable Fault Functions
a. Al