The Renfe Series 333 are high power six-axle diesel-electric locomotives built in the 1970s; at the time of their introduction they were the most powerful non-electric locomotives in Spain.

Quick facts: Renfe Class 333, Type and origin, Power type,...
Renfe Class 333
Renfe Class 333
Type and origin
Power typeDiesel-electric
DesignerMacosa, General Motors, NOHAB
Refurbishment : Alstom
Build dateOriginal series : 1974–1976
333.1 1994–1995
333.2 1997–1998
333.3 2002–2003
333.4 2003–2004[1]
Total produced333 (original): 93
333.1: 8
333.2: 4
333.3, 333.4: 92
Specifications
Configuration:
  UICCo′Co′
Gauge1,668 mm (5 ft 5+2132 in) Iberian gauge
BogiesGeneral Motors 'flexicoil' type
LengthOriginal: 20.7 m (67 ft 11.0 in)
333.3/333.4:: 22.33 m (73 ft 3.1 in)
WidthOriginal: 3.06 m (10 ft 0.47 in)
333.3/333.4: 3.16 m (10 ft 4.41 in)
HeightOriginal: 4.28 m (14 ft 0.50 in)
333.3/333.4: 4.307 m (14 ft 1.57 in)
Axle load20 t (19.7 long tons; 22.0 short tons)
Loco weight120 t (118 long tons; 132 short tons)
Fuel typeDiesel
Fuel capacityOriginal: 4,500 L (990 imp gal; 1,200 US gal)[2]
333.3: 7,200 L (1,600 imp gal; 1,900 US gal) (6,000 L or 1,300 imp gal or 1,600 US gal?[3])
Prime moverGeneral Motors GM 16-645-E-3 3,300 hp (2,500 kW)
Engine typetwo-stroke diesel
AlternatorGeneral Motors AR-10 / D-14
Traction motorsOriginal: 6 of GM D-77
RENFE 333.3 and 333.4: 6 of D-78
CylindersV16
TransmissionElectric
Loco brakePneumatic and rheostatic[2]
Performance figures
Maximum speed333 (original): 146 km/h (91 mph)
333.1: 160 km/h (99 mph)
333.2: 140 km/h (87 mph)
333.3: 120 km/h (75 mph)
333.4: 160 km/h (99 mph)[1]
Power outputOriginal: 1,875 kW (2,514 hp) (nominal at rail)[4]
Tractive effortOriginal
starting: 330 kN (74,000 lbf) at μ=0.28

Continuous: 276 kN (62,000 lbf) at 23.5 km/h (14.6 mph)
Top speed: 47 kN (11,000 lbf) at 150 km/h (93 mph)[4]
Rebuilt (333.3 and 333.4)
Starting: 341 kN (77,000 lbf)

Continuous: 320 kN (72,000 lbf) at 20 km/h (12 mph)[3]
Career
OperatorsRenfe
NicknamesRambo[5] (original build)
LocaleSpain
Close

After three decades of service the class were rebuilt incorporating Alstom's newer technology, and thus extending their life - these rebuilt machines were given the sub-class names 333.3 and 333.4