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15,000 lbs capacity

Product Description

Rotor Mass and Unbalance Limitation 
Maximum Weight
15,000 lbs. (6810 Kg)    
Minimum Weight35 lb. (11.4 Kg)
Maximum Weight per Support 
10,000 lbs. (4540 Kg)
Maximum Overload per support11,250 (5107 Kg)
Maximum indicated sensitivity per plane
(Instrument readout capability)
.001 ounce-inch
.03 gram-inch  
Maximum Achievable
Residual Unbalance
under ideal rotor conditions
.05 ounce-inch total 
.025 ounce-inch/plane
but not to exceed .000005 inches
Maximum Unbalance reduction per run95%
Shipping Weight
3325 lbs. (1511 Kg) domestic
3825 lbs. (1753 Kg) export
Rotor Dimensions 
Maximum diameter over bed
100 inches (2540 mm)
Rotor belt drive diameter range1-100 inches (25.4 to 2540 mm)  2 belts included
Maximum distance between
support bearings centerlines
82.5  inches (2095 mm)  using main bed only  
No length limitations using
supplied extra 4 ft. (1219mm) bed
Minimum Distance between
support bearing centerlines
With belt drive:
Outboard:  4 inches (102 mm)
Inboard:  9 inches (229 mm)
1” (25.4 mm) with optional fixture
Journal diameters on standard bearing set
1/2 to 20 in. (12.7 to 508 mm)
Motor & Control 
Variable FrequencyAC Drive with programmable acceleration/deceleration patterns.
DC Injection breaking 0.1 to 240 Hz. Output
Rated horsepower15 hp at 1800 RPM (11.2Kw)
Speed Range10 to 4000 RPM
Power Required
200 to 230 Volt, 3 phase 60 Hz
or 380 to 460 Volt, 3 phase 50/60 Hz. Optional
Recommended Balancing Speed150-4000 RPM 

Machine Base 

96 inch (2438 mm) long x 36 inch (914 mm) wide.  Total width of machine with drive is 80 inches (2032 mm).  Extra base eliminates  any work piece length limitations. 

Base Installation

No special foundation required.  Bolt to any concrete floor with the capacity to safely support a maximum loaded machine with the motion during operation.

Upright Work Supports

Each Support supplied with 021-DP Direct Prod High Output Electrodynamic Transducer. 
Calibration traceable  to N.I.S.T.   
High capacity anti-friction roller carriages with self aligning, gimble action feature to provide precise line contact between flat rollers and rotor journals.  
Optional offset carriers with babbit lined “V” block bearings are available for short shafts and light loads.
Each upright support moves on roller carriers.  Pedestals are locked to the base using  lever assemblies that are hand operated.     


An advanced performance computer system preinstalled with Windows XP Pro, and including a 17" monitor, keyboard, mouse and printer.  Also including, our latest  Windows based balancing program featuring user-friendly report, menu driven operations and a full page printout, driven by our new 24 bit digital signal processor using USB technology. 

Setup and Calibration

The use of trial weights establish the true effect of a known unbalance at a specific correction plane on the work piece.  Thus the machine is calibrated each time you use it.  This operation requires two runs but the influence coefficients derived from this procedure aid in minimizing cross-effect and can be saved so that future rotors with the same geometry and mass can be balanced in just one run. 

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