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SafeSet Application: Tunnel Boring Machine
Avoiding excessive torque levels prevents the driveline from being damaged. Protecting the drive units in the ma-chine from torque peaks also minimizes extensive and expensive downtime in the event of a torque overload.
Worldwide leader in tunneling technology, Herrenknecht wanted to limit torque peaks and provide protection for the driveline components when the cutterhead became blocked. The peaks can be hard to predict due to varying rock or soil layers. The cutterhead can be up to 19 m Ø.
SafeSet torque limiting couplings from Voith safeguard against these peaks that can arise in all operating conditions, regard-less of the particular rotation speed. Full safety during start up and nominal operation. Customer benefit• Protection for all parts of the driveline from being damaged• Tailor made individual solutions• Avoid expensive downtime• Quick resetting after overload event for maximum uptime
Voith Turbo Safeset ABRönningevägen 882434 Hudiksvall, SwedenTel. +46 650 540 150Fax +46 650 540 [email protected]
www.voith.com/safeset/mining
Customer Herrenknecht AG, GermanyHerrenknecht supplies a wide range of equipment and pro-ducts in mechanized tunnelling technology. Herrenknecht is the market leader in mechanized tunneling technology and the machines are used in challenging tunnel projects worldwide.
SolutionSafeSet couplings ST-KB 100, 125 and 140 are installed on the back of the electric motor between the hollow shaft and torque shaft with splines. The TBM machines are equipped with up to 14 SafeSets.
Technical specification SafeSet ST-KB 100, 125, 140
Torque range: ST-KB 100 1-2 kNm 2-3 kNm 2,4-3,6 kNmST-KB 125 2,6-4,4 kNm 4-6 kNm 4-7 kNmST-KB 140 5-7 kNm 6-9 kNm
Speed: All models 2,500 rpm
Outer diameter 200 mm ST-KB 100: Ø160mm ST-KB 125: Ø180mm ST-KB 140: Ø200mm
Shaft diameter Splines, 76 mm/122 mm ST-KB 100: Ø55/Ø95 ST-KB 125: Ø65/Ø110 ST-KB 140: Ø75/Ø130
Length 270 mm: ST-KB 100: 215mm ST-KB 125: 250mm ST-KB 140: 255mm
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