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PRG offers dynamic balancing for all rolls, rotors and drums. Our Schenck Horizontal Dynamic Balancing Machine (hard-bearing with permanent calibration) enables the precise simulation of in-plant operating conditions, and allows us to make fine-tuning adjustments to units prior to shipment from our plants.
Our dynamic balancing is done in accordance with ISO 1940/1 and ANSI S2.19 standards. We can balance any grade between G-0.4 to G-6.3.
PRG's Dynamic Balancing
|Rotor Mass Limitations
Weight range for rotors in their own bearings,
mounted directly on the dynamometer:
|400 - 160,000 lbs.|
|Rotor weight x speed (Wn2) for H80
Dynamometer not to exceed:
|8880 x 106 lb/min2|
|Rotor polar moment of inertia x speed (Wk2n2)
not to exceed:
|20,000 x 106 lb-ft2/min2|
|The (Wk2)n2 value is based on a 75 hp DC motor.
Instrumentation speed range:
|120 - 3300 rpm|
|Maximum permissible roller speed:||6000 rpm|
Max. distance between support bearing centerlines:
Min. distance between support bearing centerlines:
|Drive to Workpiece
Balancing speed over a 10" driven diameter based
on 1750 rpm base speed; infinitely variable
up to a maximum of:
Maximum surface speed:
"Since we started working with PRG, we have greatly reduced our changeout frequency. Our rolls run longer than ever before, allowing me to better utilize maintenance personnel for other tasks."
-- Mike Umbarger, Roll Maintenance
Supervisor, BLUE RIDGE PAPER
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