GER Class D81

Specifications
Specifications
Configuration:;
• Whyte	0-6-0
• UIC	C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 11 in (1.499 m)
Wheelbase	40 ft 11 in (12.47 m)
Length	54 ft 6 in (16.61 m) over buffers
Loco weight	54 long tons 15 cwt (122,600 lb or 55.6 t)
Fuel type	Coal
Firebox:
• Grate area	26.5 sq ft (2.46 m2)
Boiler pressure	180 lbf/in2 (1.24 MPa)
Heating surface	1,834.2 sq ft (170.40 m2)
Cylinders	Two, inside
Cylinder size	20 in × 28 in (508 mm × 711 mm)

Type and origin
Type and origin
Power type	Steam
Designer	A. J. Hill
Builder	Stratford Works
Build date	1920–1922
Total produced	25

GER Class D81
LNER Class J20
GER Class D81; LNER Class J20
	J20 No. 4697 rests along with numerous other freight engines at March Locomotive Depot on Sunday 14 July 1946
Power type
Type and origin
Power type	Steam
Designer	A. J. Hill
Builder	Stratford Works
Build date	1920–1922
Total produced	25
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0
• UIC	C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 11 in (1.499 m)
Wheelbase	40 ft 11 in (12.47 m)
Length	54 ft 6 in (16.61 m) over buffers
Loco weight	54 long tons 15 cwt (122,600 lb or 55.6 t)
Fuel type	Coal
Firebox:
• Grate area	26.5 sq ft (2.46 m2)
Boiler pressure	180 lbf/in2 (1.24 MPa)
Heating surface	1,834.2 sq ft (170.40 m2)
Cylinders	Two, inside
Cylinder size	20 in × 28 in (508 mm × 711 mm)
Tractive effort
Performance figures
Tractive effort	29,044 lbf (129.19 kN)
Operators
Career
Operators	Great Eastern Railway; → London and North Eastern Railway; → British Railways;
Class	GER: D81; LNER: J20;
Power class	BR: 5F
Axle load class	LNER/BR: RA 5
Withdrawn	1959–1962
Disposition	All scrapped

The GER Class D81 was a class of twenty-five 0-6-0 steam locomotives designed by A. J. Hill for the Great Eastern Railway. The all passed to the London and North Eastern Railway at the 1923 grouping and received the classification J20.

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