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Specifications
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B n4v
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Driver dia.	2.21 m (7 ft 3 in)
Length	9 m (29 ft 6+1⁄4 in)
Loco weight	49 tonnes (48 long tons; 54 short tons)
Firebox:
• Grate area	2.04 m2 (22.0 sq ft)
Boiler pressure	14 kg/cm2 (1,370 kPa; 199 psi)
Heating surface	155.3 m2 (1,672 sq ft)
Cylinders	Four, compound, HP outside, LP inside
High-pressure cylinder	350 mm × 650 mm (13+25⁄32 in × 25+19⁄32 in)
Low-pressure cylinder	530 mm × 650 mm (20+7⁄8 in × 25+19⁄32 in)

Type and origin
Type and origin
Power type	Steam
Designer	Alfred de Glehn and; Gaston du Bousquet;
Builder	SACM
Serial number	4266–4267, 4468–4482, 4634–4653, 4667–4669, 4901–4920
Build date	1891–1898
Total produced	60

Nord 2.121 to 2.180
Nord 2.121 to 2.180
	Locomotive 2.122
Power type
Type and origin
Power type	Steam
Designer	Alfred de Glehn and; Gaston du Bousquet;
Builder	SACM
Serial number	4266–4267, 4468–4482, 4634–4653, 4667–4669, 4901–4920
Build date	1891–1898
Total produced	60
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B n4v
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Driver dia.	2.21 m (7 ft 3 in)
Length	9 m (29 ft 6+1⁄4 in)
Loco weight	49 tonnes (48 long tons; 54 short tons)
Firebox:
• Grate area	2.04 m2 (22.0 sq ft)
Boiler pressure	14 kg/cm2 (1,370 kPa; 199 psi)
Heating surface	155.3 m2 (1,672 sq ft)
Cylinders	Four, compound, HP outside, LP inside
High-pressure cylinder	350 mm × 650 mm (13+25⁄32 in × 25+19⁄32 in)
Low-pressure cylinder	530 mm × 650 mm (20+7⁄8 in × 25+19⁄32 in)
Maximum speed
Performance figures
Maximum speed	110 km/h (68 mph)
Operators
Career
Operators	Chemin de fer du Nord
Numbers	2.121 – 2.180
Nicknames	Chocolat

Nord 2.121 to 2.180 were a class of 60 four-cylinder 4-4-0 compound steam locomotives of the Chemins de fer du Nord; they were used as express passenger train locomotives. They were placed in service in 1898 and all but four had been retired by 1933. At the creation of the SNCF in 1938, the surviving locomotives were renumbered 2-220.A.1 to 2-220.A.4

History

Two prototypes were designed by Alfred de Glehn, of SACM and Gaston du Bousquet of the Nord as an improvement from the No. 701 built in 1884. They were four-cylinder compound locomotives. One of them initially lacked a coupling rod, making it a 4-2-2-0, but wheelslip issues quickly ended the experiment.^[1] In 1903, locomotives 2.121 to 2.123 and 2.126 were sold to the Compagnie du Nord - Belge who renumbered them 307 to 310.^[2]

Construction

SACM delivered two prototypes from their Belfort factory in 1891, and later delivered all the production locomotives:

Table of orders
Year	Nord numbers	SACM numbers	Notes
1891	2.121 and 2.122	4266–4267	Prototypes
1893	2.123 to 2.137	4468–4482
1895	2.138 to 2.157	4634–4653
1896	2.158 to 2.160	4667–4669
1896	2.161 to 2.180	4901–4920