Renfe Class 321

Renfe Class 321
Locomotive 321 046 in October 1995
Type and origin Power type Diesel-electric Designer American Locomotive Company Builder Alco (8) Euskalduna (72) Order number Alco: 3379 Serial number Alco S-3379-01 to S-3379-08 Model Alco FPD-9 or DL500S Build date 1965–1971 Total produced 80
Specifications Configuration: ​  • AAR C-C Gauge 1,668 mm (5 ft 5+21⁄32 in) Wheel diameter 1,016 mm (3 ft 4.0 in)1 Length 18,567 mm (60 ft 11.0 in)1 Loco weight 111 t Prime mover Alco 12-251C Traction motors GE 761 (6 off)
Performance figures Maximum speed 120 km/h (75 mph) Power output At flywheel: 2,160 CV (1,590 kW; 2,130 hp) At rail: 1,250 kW (1,676 hp) continuous
Career Operators Renfe, Adif Class Serie 321 de Renfe Numbers 2101 – 2180, later 321-001 – 321-080 Locale Spain

The Renfe Class 321 (formerly 2100 series) is a class of diesel-electric locomotives operated by Renfe in Spain, designed by Alco and built by them and by Euskalduna under licence.

The locomotives have a Co-Co wheel arrangement, and are equipped with GEC 5G-761 engines.²

Production started in 1965. A total of 80 locomotives were built until 1971,³ with the first eight built by Alco, and the remaining 72 by Euskalduna.⁴ Four locomotives were rebuilt for Teco de Media Distancia freight service trials.²

Regular services with Renfe have ended, and some locomotives are used by Adif to haul maintenance trains.⁴

• 
  Adif 321 051 in May 2013
• 
  Alsa 321, numbered as 2148, in August 2017