Fulfilling the highest demands
The turbo gear market is challenging: the demand for high quality and reliable products, the requirement for high plant availability, the need for extended service performance by the suppliers plus intensive cooperation with the original equipment manufacturers (OEMs) and sub-suppliers characterize this segment.
As a manufacturer of turbo gear units, Voith sees itself faced with continually increasing challenges in engineering and order processing on the side of the OEMs. In large parts, these increased demands are driven by the plant operators. The consequences are higher speeds, more power and greater pitch-line velocities with lower power losses, lower noise levels, shortened delivery times and continued cost optimization. At the same time a very high level of operating reliability must be secured. Voith is facing these challenges and meets the requirements of the market.
Our product portfolio
Our customers can choose from innovative products built according to specification from a range of designs and types available.
Parallel shaft gear units
Reliable transmission of maximum efficiency
Parallel shaft gear units are designed and manufactured for powers up to 85 MW and speeds of up to 60 000 rpm. Three single-stage gearbox ranges cover gear ratios up to 11:1. For higher ratios a two-stage model range is available. All gear units are characterized by quiet operation and a long service life. These units are employed in just those situations where a well-developed system with very high reliability is required.
| Power transmission | up to 85 MW |
| Speeds | up to 60 000 rpm |
| Efficiency | up to 99.4% |
| Gear ratio |
up to i=11 (single-stage) up to i=20 (two-stage) |
| Housing design |
cast, welded horizontal or vertical shaft offset |
| Toothing |
double-helical single-helical with thrust collar single-helical with axial bearing |
Benefits
- highly customized gear box solutions according to the operator's technical needs
- highest reliability ensures availability of the drive train
- reduced operating costs and CO2 emissions
- best-in-class efficiency
- low oil consumption by innovative bearing technology
- high gear toothing quality
- minimized noise level below 82 dB(A) for most applications
- long service life
Integral gear units
Core unit for highly efficient compressor systems
Tailor-made to the relevant application and customer specification, integral gear units are designed and manufactured with up to 10 compressor stages, total unit weights of up to 70 tonnes, and gear pitch wheel diameters measuring over 3 meters. Gear ratios of up to 25:1 have been achieved thus far. The gear set is typically designed with single helical toothing and thrust collars.
| Power transmissions | up to 55 MW |
| Speeds | up to 55 000 rpm |
| Rated output torque | up to 150 000 Nm |
| Compressor stages | up to 10 |
| Efficiency | up to 98.5% (99.2%) |
| Gear ratio | up to i=25 |
| Housing design | cast, welded |
| Toothing |
single-helical with thrust collar (standard) single-helical with separate axial bearing |
Benefits
- highly customized gear box solutions according to the operator’s technical needs
- highest reliability ensures availability of the drive train – even for critical applications
- reduced operating costs and CO2 emissions
- enables low vibration values of overcritical rotors
- extensive experience in rotordynamic analysis
- weight-optimized and torsion-resistant
- combinable with existing power sources
- high gear toothing quality
- minimized noise level due to special tooth profiles
- long service life
Planetary gear units
High speeds, gear ratios and torques
Voith designs epicyclic gear units up to powers of 45 MW, speeds of up to 80 000 rpm and torques of over 550 kNm. With single-stage design ratios up to 12:1 and with two-stage ratios up to 80:1 are achieved.
| Power transmissions | up to 45 MW |
| Speeds | up to 80 000 rpm |
| Rated output torque | up to 550 000 Nm |
| Efficiency | up to 99.4% |
| Gear ratio |
up to i=12 (single-stage) up to i=18 (compound star) up to i=80 (two-stage) |
| Housing design | cast (standard), welded |
| Toothing | double-helical (standard), spur |
Benefits
- highly customized gear box solutions according to the operator’s technical needs
- highest reliability ensures availability of the drive train reduced operating costs and CO2 emissions
- highest efficiency for high gear ratios
- best load equalization due to Stoeckicht principle
- smallest footprint due to inline arrangement
- compact, low-weight and space-saving drive trains
- high gear toothing quality
- minimized noise level due to special tooth profiles
- long service life
Power distribution gear units
Extending the limits to higher powers and speeds
Even under harsh operating conditions, power distribution gear units exceed 250 000 operational hours. The gear unit efficiency in these high-end applications can reach levels of up to 98 percent.
| Power transmission | up to 170 MW |
| Speeds | up to 100 000 rpm |
| Efficiency | up to 98% |
| Gear ratio | up to i=10 |
| Housing design | welded, cast |
| Toothing | spur double-helical single-helical toothing |
Benefits
- highly customized gear box solutions according to the operator’s technical needs
- highest reliability ensures availability of the drive train reduced operating costs and CO2 emissions
- excellent price-performance ratio
- applicable for speed and power ranges beyond the limits of other gearbox types
- long lifetime thanks to the power splitting principle
- low maintenance and inspection costs
- high gear toothing quality
- minimized noise level due to special tooth profiles
- long service life
Rotor turning devices
Reliable turning of shaft trains
Rotor turning gear units are used primarily to break out and start shaft trains. They are also used to turn rotors slowly so that the armature cools down evenly and therefore remains dimensionally stable. At the same time, uneven debris in the blade channels is avoided. In addition, they are used to align and position shaft trains. The speeds of rotor turning gears are up to 500 rpm, the breakaway torques from 300 to 100 000 Nm.
| Motor power | up to 200 kW |
| Speeds | up to 500 rpm |
| Breakaway torque and mass moments of inertia |
300 to 100 000 Nm up to 100 000 kg m² |
| Design models |
with overrunning clutch with swivel pinion |
| Meets the following standards | ATEX |
| Special designs |
with hydraulic motor with return stop with hydraulically triggered overload coupling with switched overrunning clutch (lockout) |
|
Delivery options |
control cabinets attachments: adapter flanges, gear rims, soft starters |
Benefits
- highly customized gear box solutions according to the operator’s technical needs
- highest reliability ensures availability of the drive train
- high degree of flexibility
- value stability of equipment due to protected precision-controlled rotor cooling
- long service life
Diaphragm couplings
Reliable within the threshold range
Diaphragm couplings are designed and manufactured by Voith for torques of up to 1 500 000 Nm and speeds of up to approx. 80 000 rpm. The standard program includes couplings suitable for angular misalignment up to 0.25°. Special model types for angular misalignments up to 0.5° are available. These high performance couplings meet the requirements of API 671 and ISO 10441. They are approved for Zone 1 and Zone 2, in accordance with ATEX.
| Power transmission | up to 70 MW |
| Speeds | up to 80 000 rpm |
| Torque | up to 1 500 000 Nm |
| Design models | EconTors: (single diaphragm) TwinTors: (double-diaphragm) |
| Connection type |
inside hub outside hub flange |
| Diaphragm-sleeve connection |
bolted welded adhesive (CFRP sleeve) |
| Meets the following standards |
API 671 ISO 10441 ATEX, zone 1 and 2 |
| Special designs |
torque-sensing spacer sleeve lightweight design (CFRP) low-windage design (optimized air flow characteristics) |
Benefits
- highly customized gear box solutions according to the operator’s technical needs
- highest reliability ensures availability of the drive train
- combinable with existing power sources
- high degree of flexibility
- wear-free design minimizing maintenance expenses
- very low turbulence
- low-weight
- special noise-protection measures
- minimized noise level
- long service life
Explore other relevant products
The AeroMaXX technology is a clever but simple and, most importantly, reliable solution that considerably increases the efficiency on the one hand and reduces oil consumption on the other hand.
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Powerful, efficient, reliable | Key components for combined cycle power plants
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