Belgian Railways Class 77

SNCB/NMBS 77
Diesel locomotive #7798 of the Belgian State Railways (SNCB – NMBS), 2010
Type and origin Power type Diesel Builder Vossloh Schienentechnik/Vossloh Locomotives Serial number 1000918 – 1001007[1] 1001217 – 1001296[1] Build date 1999–2005[1] Total produced 170[1]
Specifications Configuration: ​  • UIC B'B'[1] Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge[1] Wheel diameter 1,000 mm (39.37 in) (new)[1] Minimum curve 75 m (246.06 ft)[1] Wheelbase bogie centre distance 7.770 m (25 ft 5.9 in)[2] axle distance 2.400 m (7 ft 10.5 in)[2] Length 15.590 m (51 ft 1+3⁄4 in)[1] Width 3.052 m (10 ft 1⁄8 in)[1] Height 4.220 m (13 ft 10+1⁄8 in)[1] Loco weight 90 t (88.6 long tons; 99.2 short tons)[1] Fuel capacity 4,200 L (920 imp gal; 1,100 US gal)[1] Prime mover Anglo Belgian Corporation 6DZC-1000-144A[1] Alternator Auxiliary 3 phase 65–130 kW[3] Transmission Voith Hydraulic L4r4zseU2a[2] Loco brake pneumatic (Knorr-Bremse)[3]
Performance figures Maximum speed 100 or 60 km/h (62 or 37 mph)[1][2] Power output 1,150 kW (1,540 hp)[1] Tractive effort 210–265 kN (47,000–60,000 lbf)[1]
Career Operators SNCB/NMBS Class 77 Numbers 7701–7870[1] Disposition in service

The NMBS/SNCB Class 77 (also known as HLD 77 or HLR 77) is a class of 4 axle B'B' road switcher diesel hydraulic locomotive designed for shunting and freight work manufactured at the beginning of the 2000s by Vossloh Schienentechnik/Vossloh Locomotives at the Maschinenbau Kiel plant in Kiel, Germany for the National Railway Company of Belgium (SNCB/NMBS).