MKH SafeSet / SmartSet water-cooled motors with a built-in safety coupling for TBM cutterhead drives up to 450 kW
Country: Austria · Model: MKH SafeSet / SmartSet
Low-voltage induction motors with a water-jacketed stator, with a power up to 450 kW for voltages up to 690 V, with a built-in torque limiting system. They were developed to drive the cutterhead of tunnel boring machines (TBM), where meeting hard rock gives load peaks that are dangerous for the gearbox.
- Power
- up to 450 kW
- Voltage
- up to 690 V
- Speed
- 0–3000 rpm (with VFD)
- IEC frame size
- 280–400
Technical specifications
| Power | up to 450 kW |
|---|---|
| Voltage | up to 690 V |
| Speed | 0–3000 rpm (with VFD) |
| IEC frame size | 280–400 |
| Housing | welded, stator with a water jacket |
| Mounting | IM B5 (IM3001) |
| Degree of protection | up to IP67 |
| Insulation | class H |
| SafeSet | hollow shaft for a torque limiting coupling and brake |
| SmartSet | automatic re-turning of the ring gear on micro-slip |
| Standards | IEC 60034, CSA C22.2 No.100-14, UL 1004, NEMA MG1 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The housing is welded, the stator is cooled by water, the IEC frame size is 280–400, the flange version is IM B5 (IM3001), protection is up to IP67 and the insulation is class H. The speed is 0–3000 rpm when run from a converter. In SafeSet the shaft is hollow, with a safety coupling and a brake inside, and on overload the coupling disconnects the transmission. SmartSet adds automatic re-turning of the ring gear on small micro-slips, so short torque peaks do not stop the drive. The motors are equipped with temperature and vibration sensors and are made to IEC 60034, CSA C22.2 No.100-14, UL 1004 or NEMA MG1. The cutterhead is driven by many motors around the circumference, so compactness and tightness are important. The projects include the Gotthard Base Tunnel (4 TBMs of 9.6 m diameter), Crossrail in London (8 TBMs), and tunnels in Madrid (M30, 15.1 m), Shanghai (Chongming, 15.4 m) and Seattle (State Route 99, 17.45 m).
How to choose
If the main task is to protect the gearbox and transmission from peak torque, take SafeSet. SmartSet is needed when the drive has to keep working after short peaks. For powers above 450 kW look at MKH up to 2500 kW, and for test stands up to 10 000 rpm the MKHMF / MKJF / MKHJF / MCSF series.
Request a price and lead time
MKH SafeSet / SmartSet water-cooled motors with a built-in safety coupling for TBM cutterhead drives up to 450 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What are the power and voltage of the SafeSet and SmartSet motors?
Power up to 450 kW, voltage up to 690 V, IEC frame size 280–400. The speed is 0–3000 rpm when run from a frequency converter.
How does SafeSet differ from SmartSet?
SafeSet has a hollow shaft with a safety coupling and a brake. SmartSet automatically re-turns the ring gear on small micro-slips.
What degree of protection does the motor have?
Up to IP67, class H insulation, a water-jacketed stator. This suits moisture, dust and vibration underground.
Is the motor suitable for replacement on an operating TBM?
Yes, the motors are suitable both for new cutterheads and for replacement on existing machines in metro and tunnel construction.
Similar products
3.ZKELow-voltage IE3 induction motor, 18.5–1000 kW
2.RZKITLow-voltage induction motor for operation from a frequency converter, 18.5–2500 kW
HAW12 / HAW13 / HAW20 / HAW22 / HAW29Drilling induction motors 600–2000 hp, 575 V, for variable-frequency drive
IMfinity FLSESThree-phase LV induction motors in cast-iron frame IE3/IE4, 0.75–900 kWREQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.