NER Class X

Specifications
Specifications
Configuration:;
• Whyte	4-8-0T
• UIC	2′D n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 1+1⁄4 in (0.946 m)
Coupled dia.	4 ft 7+1⁄4 in (1.403 m)
Wheelbase	29 ft 0 in (8.839 m)
Length	42 ft 1 in (12.827 m)
Axle load	18.00 long tons (18.29 t)
Adhesive weight	67.60 long tons (68.68 t)
Loco weight	85.40 long tons (86.77 t)
Fuel type	Coal
Fuel capacity	4.25 long tons (4.32 t)
Water cap.	2,500 imp gal (11,000 L; 3,000 US gal)
Firebox:
• Grate area	23 sq ft (2.1 m2)
Boiler pressure	175 lbf/in2 (1.21 MPa)
Heating surface:
• Firebox	127 sq ft (11.8 m2)
• Tubes	1,168 sq ft (108.5 m2)
• Total surface	1,295 sq ft (120.3 m2)
Cylinders	Three
Cylinder size	18 in × 26 in (457 mm × 660 mm)
Valve gear	Stephenson
Valve type	8+3⁄4-inch (222 mm) piston valves

Type and origin
Type and origin
Power type	Steam
Designer	Wilson Worsdell
Builder	NER Gateshead Works (10); Darlington Works (5);
Build date	1909–1910 (10) and 1925 (5)
Total produced	15

NER Class X
LNER Class T1
NER Class X ; LNER Class T1
	No. 69919 at Stockton Locomotive Depot 1954
Power type
Type and origin
Power type	Steam
Designer	Wilson Worsdell
Builder	NER Gateshead Works (10); Darlington Works (5);
Build date	1909–1910 (10) and 1925 (5)
Total produced	15
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-0T
• UIC	2′D n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 1+1⁄4 in (0.946 m)
Coupled dia.	4 ft 7+1⁄4 in (1.403 m)
Wheelbase	29 ft 0 in (8.839 m)
Length	42 ft 1 in (12.827 m)
Axle load	18.00 long tons (18.29 t)
Adhesive weight	67.60 long tons (68.68 t)
Loco weight	85.40 long tons (86.77 t)
Fuel type	Coal
Fuel capacity	4.25 long tons (4.32 t)
Water cap.	2,500 imp gal (11,000 L; 3,000 US gal)
Firebox:
• Grate area	23 sq ft (2.1 m2)
Boiler pressure	175 lbf/in2 (1.21 MPa)
Heating surface:
• Firebox	127 sq ft (11.8 m2)
• Tubes	1,168 sq ft (108.5 m2)
• Total surface	1,295 sq ft (120.3 m2)
Cylinders	Three
Cylinder size	18 in × 26 in (457 mm × 660 mm)
Valve gear	Stephenson
Valve type	8+3⁄4-inch (222 mm) piston valves
Tractive effort
Performance figures
Tractive effort	34,080 lbf (151.6 kN)
Operators
Career
Operators	North Eastern Railway; London and North Eastern Railway; British Railways;
Power class	BR: 7F, 5F from May 1953
Axle load class	LNER/BR: Route availability 8
Withdrawn	1937, 1955–1961
Disposition	All scrapped

The NER Class X (LNER Class T1) was a class of 4-8-0T tank locomotive designed by Wilson Worsdell for the North Eastern Railway. They were intended for use as powerful shunting engines to arrange and move coal wagons for loading into ships. In total 15 were built, 10 by the NER between 1909 and 1910, and a further five in 1925 by the London and North Eastern Railway (LNER). They had three cylinders with divided drive: the inside cylinder driving the leading axle, the outside cylinders driving the centre.