Press Release

2017-Oct-09

ZF’s Special Spur Gear Drives to make Boston’s Metro Trains more reliable

  • ZF is developing a special two-stage hollow shaft spur gear drive for Boston Metro
  • The “Red Line“ and “Orange Line” trains will be equipped with these drives
  • Volume production delivery scheduled for the 4th quarter of 2017

Friedrichshafen, Germany/Boston, MA. The Massachusetts Bay Transportation Authority (MBTA) has placed an order for 284 metro trains from Chinese rail vehicle manufacturer CRRC. ZF supplies the spur gear drives. An Initial batch has been delivered at the end of 2016, with volume production delivery starting in the 4th quarter of 2017. This special two-stage hollow shaft spur gear drive was developed in Friedrichshafen, Germany, but is being produced at ZF’s Gainesville, Georgia location in the United States. There are a number of other US Rail Authorities drive systems currently being produced by ZF at the Gainesville facility.

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ZF’s Special Spur Gear Drives to make Boston’s Metro Trains more reliable

The Massachusetts Bay Transportation Authority (MBTA) is one of the oldest local public transport authorities in the United States. Opened in 1901, the “Orange Line” from Oak Grove to Forest Hills is the oldest "genuine" metro line in the U.S. The “Red Line” operates between Alewife and Braintree.

High reliability, customer-specific design and development along with the most modern production technology and the best overall package for the customer are essential success factors when building electric metro trains.

The drive system has an impressive 1,040 Nm input torque and 100 kW engine output. It comes inside a weight-optimized spheroidal graphite cast iron housing.

Another feature of the ZF drive system is the use of ZF standard labyrinth seals, which shorten the development time significantly, thus benefitting the customer.

The first 32 drives were delivered at the end of 2016. Ramped up volume production delivery is scheduled for the 4th quarter of 2017, with more than 20 spur drive units to be delivered monthly to the manufacturer of the Metro trains’ drive units. This will continue through the end of 2021.

CONTACT

Georg Ehling

Head of Marketing and Business Development

+49 7541 77-2199

georg.ehling@zf.com