A Bo-Bo-Bo or Bo′Bo′Bo′ ( UIC classification ) is a locomotive with three independent two-axle bogies with all axles powered by separate traction motors . In the AAR system , this is simplified to B-B-B due to the system only taking powered axles into consideration, not traction axles.
13-592: The Class EF65 ( EF65形 ) is a 6-axle ( Bo-Bo-Bo wheel arrangement ) DC electric locomotive type operated on passenger and freight services in Japan since 1965. A total of 308 locomotives were built between 1965 and 1979, with 52 still in service as of 1 April 2016. The class was initially divided into the EF65-0 subclass for general freight and the EF65-500 subclass for express freight and passenger use. The Class EF65
26-584: A Bo+Bo+Bo arrangement) or else significant side play on the center bogie. The Italian locomotives and New Zealand EW class are articulated, whereas the Eurotunnel and New Zealand EF and DJ class locomotives' central bogies have a lot of sideplay. A similar arrangement, but without separate traction motors for each axle, would be a B′B′B′ arrangement as UIC, indistinguishably B-B-B in AAR. This arrangement has been used for electric locos with three monomotor bogies , such as
39-600: A total of 42 locomotives, including newly built locomotives and locomotives (EF65 535 - 542) modified from the earlier EF65-0 subclass (EF65 77 - 84) for use on overnight sleeping car services and express freight services operating at a maximum speed of 110 km/h (70 mph). As of 1 April 2016, only one EF65-500 locomotive, EF65-501, owned by JR East, remained in service. Locomotives used for hauling passenger services are referred to as "P" type, and those used for freight services are referred to as "F" type. The original designations are as shown below. The EF65-1000
52-724: Is a class of electric locomotives built by Comeng , Granville for the State Rail Authority of New South Wales. The 86 class initially hauled passenger and freight services to Lithgow on the Main Western line and Wyong on the Main Northern line . Their sphere of operation extended to Newcastle on the latter line in June 1984 and to Port Kembla in January 1986 when the Illawarra line
65-491: Is often used to lower axle weight while keeping lateral forces low compared to a locomotive with two three-axle bogies, thus allowing the locomotive to use lightly laid track, in particular narrow-gauge railways . The arrangement is extensively used on Italian and Japanese railways. Other examples include New Zealand 's DJ , EW and EF classes; the Eurotunnel Class 9 locomotives, which were themselves derived from
78-523: The Italian FS Class E.632 of 1982. These are a pair of Bo′Bo′Bo′ locomotives semi-permanently coupled as a single unit. They are each constructed with a single cab, giving a cab at each end. This layout includes Russian freight electric locomotives VL15 , VL85 , VL86f and the experimental gas turbine electric locomotive GT1h -001, which was converted from an electric locomotive VL15. New South Wales 86 class locomotive The 86 class
91-679: The New Zealand EF class; the Swiss SBB Re 6/6 (Re 620); the Russia Railways VL65 , EP1 (EP1M), EP10 and EP20 ; and the South Korean Korail Class 8000 . China imported 6K electric locomotive from Japan between 1986 and 1987. The Bo-Bo-Bo design was applied to SS7 series except SS7E. Locomotives of this type are also used on Myanmar railways . The State Rail Authority of New South Wales , Australia built
104-517: The last of its 86 Class electric locomotives (8650) in the Bo-Bo-Bo arrangement (called locally a Tri-Bo), but this did not prove successful and it spent long periods out of traffic undergoing repair. The first Italian six-axle electric locomotives, such as the E.626 , used a Bo′BoBo′ layout, where the two centre axles were mounted on a rigid frame and only the outer pairs on bogies. This wheel arrangement requires either an articulated frame (becoming
117-1078: Was delivered as a Bo-Bo-Bo trial unit. It spent long periods out of traffic undergoing repair. In 1994/95 all were repainted by A Goninan & Co , Taree into Freight Rail (later FreightCorp ) blue. By October 1997 18 had been withdrawn from service with cracked frames. By this stage the amount of work requiring electrics was reducing. National Rail decided it would through haul its services and from March 1998 FreightCorp ceased operating them on Main Northern line services. The need for electrics continued to decline with their remaining duties mainly being hauling coal trains from Lithgow to Port Kembla. The last examples were withdrawn in June 2002. In 2002, most were sold to Silverton Rail and taken to Broken Hill then sold again in February 2006 to Allco Finance Group with some on sold, but most scrapped. Four were leased back to RailCorp in 2004 (8601, 8609, 8622 and 8644) for use on infrastructure trains during construction of
130-634: Was designed by Japanese National Railways (JNR) as a standard locomotive type developed from the earlier Class EF60 design for use primarily on the Tokaido Main Line and Sanyo Main Line . During the JNR era, these locomotives were used for freight trains and also for passenger work - primarily hauling night trains such as the Izumo sleeping car limited express and Ginga sleeping car express. The EF65-0 subclass
143-500: Was designed for general freight use on the Tokaido Main Line and Sanyo Main Line . 135 locomotives were built between 1965 and 1970. As of 2016, all EF65-0 locomotives had been withdrawn. Five 6th-batch Class EF65-0 locomotives, numbers EF65 131 to EF65 135, were converted in 1990 and 1991 to become Class EF67-100 banking locomotives for use on the "Senohachi" section of the Sanyo Main Line . The EF65-500 subclass consisted of
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#1732898832634156-520: Was electrified. With a one-hour rating of 4,400 horsepower (hp), the 86 class was the most powerful locomotive in Australia at the time. Although no longer in regular use, the class remains among the most powerful in the country. Despite their higher power rating, they were generally regarded as inferior to the Metropolitan-Vickers built 46 class , which dated from the late 1950s. The last, 8650
169-628: Was intended for use on both passenger and freight services, and was referred to as the "PF" type. 139 locomotives were built between 1969 and 1979. As of 1 April 2016, 15 EF65-1000 locomotives remained in service, operated by JR East and JR West. There are former Class EF65-1000 locomotives renumbered from May 2012 by JR Freight to differentiate them from locomotives fitted with driving recording units mandated for operations over 100 km/h (60 mph). As of 1 April 2016, 36 EF65-2000 locomotives remained in service, operated by JR Freight. Bo-Bo-Bo The Bo-Bo-Bo configuration
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