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The reference for locomotives and railcars

Voith Gravita

DB AG classes 261 and 265

Germany 2008 165 produced
261 096 in August 2013 in Hamburg Gerd Fahrenhorst CC BY 3.0

The Gravita is a family of shunting locomotives introduced by Voith after the introduction of the Maxima to round off the range downwards. It is a modular construction that was available with three to six axles in different power levels and was also delivered for narrow-gauge railways on request.

Various variants of the MTU 4000 series were used as engines, which also have a modular design and deliver between 522 and 1,800 kW with 8, 12 or 16 cylinders. Like the older locomotives to be replaced, the Gravita has a load-bearing frame on which the driver's cab is located in the middle. In addition to a shunting gear, there is a road gear with which the locomotive can reach 100 km/h.

The first order from the DB included 130 Gravita 10 BB with 1,000 kW, which, like once another shunting locomotive of the Bundesbahn, was classified in the class 260. However, since the remaining orders were changed to a version with a diesel particle filter during delivery, the rest were classified in the class 261.

After the presentation of the 15L BB with 1,800 kW, the order was changed again so that 31 of them were to be delivered as the more powerful variant. They were classified in the class 265. With additional orders from some private companies, a total of 165 Gravita had been made when production ceased again. The weakest and strongest planned variants with 400 and 2,200 kW were not actually built.

Technical data

General

Property 10 BB 15 BB 15L BB
Built 2008-2013 2010-2011 2011-2014
Manufacturers Voith Turbo Lokomotivtechnik
Wheel arrangement B-B
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property 10 BB 15 BB 15L BB
Length 15.72 m 16.86 m 18.50 m
Wheelbase 9.46 m 10.60 m
Service mass 76 t 84 t 90 t
Adhesion mass 76 t 84 t 90 t
Rigid wheelbase 2.40 m
Axle load 19 t 20 t 22.5 t

Power plant

Property 10 BB 15 BB 15L BB
Engine MTU 8V 4000 R43 MTU 12V 4000 R43
Engine type V8 diesel V12 diesel

Power

Property 10 BB 15 BB 15L BB
Power source diesel-hydraulic
Indicated power 1,000 kW (1,360 PS) 1,500 kW (2,039 PS) 1,800 kW (2,447 PS)
Top speed 100 km/h
Starting effort 258.0 kN 270.0 kN

Calculated values

Property 10 BB 15 BB 15L BB
Factor of adhesion 1 : 2.89 1 : 3.05 1 : 3.27
Power-to-weight ratio 13.2 kW/t 17.9 kW/t 20.0 kW/t
Adhesive weight/Total 1 : 1.00
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