B750RR
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PERFORMANCE SPECIFICATIONS for Model B750RR Balancing Machine 1 General Description 1.1 Balancing Machine The Model B750RR is a dynamic, horizontal axis, super critical (above resonance) Balancing Machine that utilizes velocity transducers to measure the displacement generated by unbalance. The B750RR has an end drive console with a variable speed motor and multi‐ speed gearbox for efficient transfer of torque to the rotor. The end drive system uses a Cardan shaft to spin the rotor. Adapters to attach the rotor are the customer’s responsibility. The use of a Cardan shaft may require electronic tooling compensation (a feature of the Model 295 instrument) to eliminate errors due to fit up and /or unbalance in the adapter tooling. The machine and instrument are easy to use and set up. The standard calibration method uses trial weights to calibrate the rotor to the balancing instrument for the most accurate possible unbalance readout. The machine can be mounted to most industrial floors without modification. 1.2 Instrumentation The standard balancing instrument available with the B750RR is the Model 295, which has large digital display meters and shaft synchronous digital filters. Dynamic (left/right), static, and couple unbalance can be displayed. Individual rotor setups can be stored and the balance results can be printed on a printer that is also included with the B750RR. The instrument also

2 Specifications 2.1 Rotor Mass and Unbalance Limitations 2.1.1 Maximum Weight Capacity 2.1.2 Maximum Weight per Support* 2.1.3 Minimum Weight 2.1.4 Minimum Achievable Residual Unbalance (Umar) per plane† †But not less than 2.1.5 Unbalance Reduction Ratio (75,000 pounds) (50,000 pounds) (500 pounds) *Total rotor weight not to exceed amount listed in paragraph 2.1.1 above. 2.2 Rotor Dimensions 2.2.1 Maximum Rotor Diameter 2.2.2 Journal Diameter Range Standard Rollers Optional Small Rollers 2.2.3 Maximum Distance Between Support Pedestal Centerlines 2.2.4 Minimum Distance Between Support...

2.3 Drive System 2.3.1 Drive System Type End Drive, DC motor with multi‐speed gearbox and fixed length Cardan shaft. Type Length Weight Maximum Torque Angle From Horizontal Maximum For Stated Umar Maximum Unbalance error Systematic (see notes) Universal Joint 965 mm 39 kg 8800 N∙m ±12° ±3° 1440 g∙mm Note 1. Systematic errors are repeatable errors that can be compensated for by index balancing. Note 2. Non‐systematic errors are errors whose maximum value is known but cannot be compensated for by index balancing. Note 3. Additional systemaic unbalance measurement errors (due to unbalance and...

2.3.12 Controller Speed Range 2.3.14 Slow Roll Speed, minimum 2.3.15 Air Supply Requirement 2.3.15 Gearbox 480 to 690 kPa at .85 m/hr (70 to 100 psi at .5 cfm) Multi-speed, heavy duty gearbox with 11 speeds. Gearbox is located inside control console and is shifted only under no load conditions.

3 Machine Components 3.1 Machine Base 3.1.1 Length 3.2 Work Supports 3.2.1 Two super critical (above resonance) pedestals. 3.2.2 Two electrodynamic, high output, moving coil, vibration transducers with calibration traceable to the National Institute of Standards and Technology (USA). (Transducers are furnished with Balancing Instrument.) 3.2.3 Two flat, universal mounting surfaces for roller bearing assemblies, V‐Blocks, pivot assemblies, pillow blocks, and/or special mounting arrangements 3.2.4 Height adjustment in each work support provides 76 mm (3 in) of adjustment for difference in...

3.3.4 A fixed length Cardan driveshaft is provided to connect the output shaft of the console to the rotor. 3.3.5 Operator controls consisting of start and stop pushbottons, jog/run switch, speed control knob, brake off‐norm switch with air pressure regulator and guage, and semi‐automatic journal lubrication button. 3.3.6 AC Ampere meter with 0 to 200 Amp range, 3‐position phase selector switch, and power indicator. 3.3.7 End thrust meter displaying 0 to 8500 Newton range (0 to 2000 lbs). 3.3.8 Rotor angle indicator on output shaft is graduated in 1° increments with a reference pointer for...

4 Paint Standard color –Pedestals, Console, and Base Warm Gray ‐ Pantone 7C 5 General Arrangement See drawing E51399 5.1 Overall Dimensions 5.1.1 Length 5.1.4 Height with max. diameter rotor 5.2 Weight and Shipping Dimensions 5.2.1 Net Weight 5.2.2 Shipping Weight Domestic Export 5.2.3 Shipping Dimensions (3 Containers) 5.2.3.1 Crate 1 Length Width Height 5.2.3.1 Crate 2 Length Width Height

6 Installation 6.1 Installation Requirements Foundation: Normal 152 mm (6 in) thick reinforced concrete floor is recommended. No special heavy concrete substructure required as long as floor is stable, capable of supporting the weight of the balancing machine with maximum capacity rotor, and does not permit any pedestal motion during the balancing operation. Base and Console Installation: The base and console must be lagged to the floor with standard expandable concrete anchors through the provided mounting holes. An installation drawing is provided with the machine and more detailed...

Pedestal risers to accommodate larger rotor diameters. Standard riser heights: 7.8.1 Riser Option 1 305 mm (12 in) 7.8.2 Riser Option 2 457 mm (18 in) 7.8.3 Riser Option 3 610 mm (24 in) 7.8.4 Riser Option 4 914 mm (36 in) 7.8.5 Riser Option 5 1067 mm (42 in) 7.9 Larger drive motor and controller with regenerative braking. 7.9.1 Motor Option 1 56 kW (75 HP) 1150rpm 7.9.2 Motor Option 2 75 kW (100 HP) 1150rpm 7.10 Medium duty precision U‐joint Cardan driveshaft for lightweight rotors, fixed length. P/N E43673 (38 in) 7.10.1 Length 965 mm 7.10.2 Weight 24 kg (52 lbs) 7.10.3 Maximum torque...

B750RR Series 34000 kg (75000 lb) 8 Safety Note Safety guards or enclosures are required to meet relevant safety regulations. It is the buyer’s responsibility to ensure that the balancing machine has an adequate safety protection system before operating the machine. email: sales@irdbalancing.com IRD LLC is a limited liability company, USA Standard machine configuration described, optional accessories or special order items may alter the specifications. Specifications in accordance with ISO 2953 abbreviated form. Specificati