Froude, Inc. USA
41123 Jo Drive, Novi, MI USA
Froude, Ltd. UK
Blackpole Rd, Worcester WR3 8YB
Standard Hydraulic Dynamometers
Standard F Series Hydraulic Dynamometer
The Froude F-series range of hydraulic dynamometers (also referred to as water brakes) have been designed to be compact, robust and to allow easy maintenance. Some of these models are available with a streamlined, fabricated base. This base is not only ultra durable due to the powder coating process, but also offers flexibility with water inlet/outlet placement and lifting eye locations.
These engine dynos are fitted with two half couplings which, with the rotor, are oil injected onto the shaft. The standard machines run in grease lubricated rolling element bearings.
The hydraulic dynamometer working compartment consists of special semi-circular shaped vanes cast into stainless steel rotor and stators. Water flowing in a toroidal vortex pattern around these vanes creates a torque reaction through the dynamometer casing which is resisted and measured by a precision load cell. The dynamometer load is controlled by a 'butterfly' water outlet valve, operated by a closed loop electro-hydraulic servo system. The power absorbed by the dynamometer is carried away by the water in the form of heat.
F84 Standard Hydraulic Dynamometer
F24 Standard Hydraulic Dynamometer
F-Series Hydraulic Dynamometer Models
KEY to Model Letter Designations:
R= Reversible, AV= Axial Vane (bi-directional), GT= Gas Turbine, FRR= Fixed Return Ring
KEY to Numeric:
F359: 35 = rotor size (cm), 9 = 90° crop on rotor
| Model | Max Speed (RPM) | Torque Nm (lb.ft) | Power kW (BHP) |
*Curve Ref |
|---|---|---|---|---|
| F24 | 9,000 | 2,700 (1,990) | 750 (1,010) | Contact Sales |
| F246 | 9,000 | 2,700 (1,990) | 750 (1,010) | Contact Sales |
| F246FRR | 11,000 | 2,000 (1,480) | 750 (1,010) | Contact Sales |
| F249 | 16,000 | 1,270 (940) | 750 (1,010) | Contact Sales |
| RF24AV | 10,000 | 1,780 (1,310) | 750 (1,010) | Contact Sales |
| F35 | 6,000 | 7,120 (5,250) | 1,640 (2,200) | Contact Sales |
| F35GT | 6,000 | 10,780 (7,950) | 1,640 (2,200) | Contact Sales |
| F359 | 9,000 | 5,220 (3,850) | 1,640 (2,200) | Contact Sales |
| RF39AV | 6,000 | 7,120 (5,250) | 1,640 (2,200) | Contact Sales |
| F47 | 4,500 | 18,500 (13,650) | 3,300 (4,425) | Contact Sales |
| F47GT | 4,500 | 28,470 (21,000) | 3,300 (4,425) | Contact Sales |
| F476 | 4,500 | 18,500 (13,650) | 3,300 (4,425) | Contact Sales |
| F479 | 7,000 | 13,700 (10,105) | 3,300 (4,425) | Contact Sales |
| RF47AV | 4,500 | 17,850 (13,150) | 3,300 (4,425) | Contact Sales |
| F63 | 3,600 | 50,000 (36,900) | 6,700 (9,000) | Contact Sales |
| F639 | 5,000 | 37,000 (27,300) | 6,700 (9,000) | Contact Sales |
| RF63AV | 3,600 | 47,120 (34,800) | 6,700 (9,000) | Contact Sales |
| F84 | 2,500 | 142,000 (104,750) | 12,000 (16,100) | Contact Sales |
| F849 | 4,000 | 76,000 (56,100) | 12,000 (16,100) | Contact Sales |
| RF84AV | 2,500 | 101,400 (74,800) | 12,000 (16,100) | Contact Sales |
| RF84 | 2,000 | 142,000 (104,750) | 12,000 (16,100) | Contact Sales |
| Additional | Configurations | Available |
* Regarding Curve References: Contact sales for appropriate power curve, as multiple configurations may be available depending on your requirements.
F-Series Hydraulic Dynamometer Details
As standard, the F type machines are fitted with two half couplings allowing connection at either end. These, along with the rotor, are oil injected on to the main shaft, thus eliminating stress raising keyways. Grease lubrication is replaced by the optional 'oil mist' system for the High Speed versions.
The dynamometer working compartment consists of special semi-circular shaped vanes cast into stainless steel rotors and stators. Water flowing in a toroidal vortex pattern around these vanes creates a torque reaction through the dynamometer casing which is resisted and measured by a precision load cell. The dynamometer load is controlled by a characterised water outlet valve, operated by a closed loop electro hydraulic servo system.
The power absorbed by the dynamometer is carried away by the water in the form of heat.
Development, production and post overhaul testing of:
- Automotive gasoline and diesel engine
- Industrial and marine diesel engines
- High performance competition engines
- Turboprop, turboshaft and power generation turbines
- Engine components
- Electric motors
The standard range of Froude F type Hydraulic dynamometers extends from 750 kW up to 25,000 kW and speeds up to 10,000 rpm. Torque measurement accuracy is ±0.25% of full rated torque of the dynamometer.
Speed is measured by a pulse pickup operating with a 60 tooth wheel and gives accuracy of ±1 rpm.
- High speed versions up to 16,000 rpm
- Calibration equipment
- Shaft bearing thermocouples
- Water inlet pressure switch
- Water inlet valve, pneumatic or servo operation
- Water outlet valve fail-safe device
- Water inlet and outlet thermocouples
- Bi-directional machines
- Paint color
F63 Standard Hydraulic Dynamometer
Testing Low Speed/High Power Prime Movers?
Low-Speed Dynamometers
Our Low Speed (LS) dynamometers are designed for testing turbine, piston and electrical prime movers in environments from open shipyards to enclosed research centers.
Our Low Speed (LS) dynamometers are designed for testing turbine, piston and electrical prime movers in environments from open shipyards to enclosed research centers.
Froude Low-Speed Dynamometer
Contact Froude for Information
Froude dynamometers are renowned the world over as high quality, reliable and accurate. Our test equipment will provide a return on your investment for many years.
Froude, Inc.
41123 Jo Drive, Novi, MI 48375 USA
+1 248.579.4295
Froude, Ltd.
Blackpole Road, Worcester WR3 8YB
41123 Jo Drive, Novi, MI 48375 USA
+1 248.579.4295
Froude, Ltd.
Blackpole Road, Worcester WR3 8YB