South African Class 6J 4-6-0

Specifications
Specifications
Configuration:;
• Whyte	4-6-0 (Tenwheeler)
• UIC	2'Cn2
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	28+1⁄2 in (724 mm)
Coupled dia.	54 in (1,372 mm)
Tender wheels	33+1⁄2 in (851 mm) as built; 34 in (864 mm) retyred
Wheelbase	45 ft 8+1⁄2 in (13,932 mm)
• Axle spacing; (Asymmetrical)	1-2: 4 ft 9 in (1,448 mm); 2-3: 6 ft 7 in (2,007 mm)
• Engine	20 ft 8 in (6,299 mm)
• Leading	5 ft 6 in (1,676 mm)
• Coupled	11 ft 4 in (3,454 mm)
• Tender	14 ft 7 in (4,445 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:;
• Over couplers	53 ft (16,154 mm)
Height	12 ft (3,658 mm)
Frame type	Bar
Axle load	13 LT 8 cwt (13,620 kg)
• Leading	10 LT 18 cwt (11,070 kg)
• 1st coupled	12 LT 5 cwt (12,450 kg)
• 2nd coupled	13 LT 8 cwt (13,620 kg)
• 3rd coupled	12 LT 5 cwt (12,450 kg)
• Tender bogie	Bogie 1: 16 LT 15 cwt (17,020 kg); Bogie 2: 17 LT 8 cwt (17,680 kg)
• Tender axle	8 LT 14 cwt (8,840 kg)
Adhesive weight	37 LT 18 cwt (38,510 kg)
Loco weight	48 LT 16 cwt (49,580 kg)
Tender weight	34 LT 3 cwt (34,700 kg)
Total weight	82 LT 19 cwt (84,280 kg)
Tender type	XD (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4 permitted
Fuel type	Coal
Fuel capacity	5 LT 10 cwt (5.6 t)
Water cap.	2,730 imp gal (12,400 L)
Firebox:
• Type	Round-top
• Grate area	18.75 sq ft (1.742 m2)
Boiler:;
• Pitch	6 ft 9+1⁄2 in (2,070 mm)
• Diameter	4 ft 7 in (1,397 mm)
• Tube plates	11 ft 2+1⁄8 in (3,407 mm)
• Small tubes	182: 2 in (51 mm)
Boiler pressure	180 psi (1,241 kPa)
Safety valve	Ramsbottom
Heating surface:
• Firebox	107.6 sq ft (10.00 m2)
• Tubes	1,065 sq ft (98.9 m2)
• Total surface	1,172.6 sq ft (108.94 m2)
Cylinders	Two
Cylinder size	17 in (432 mm) bore; 26 in (660 mm) stroke
Valve gear	Stephenson
Couplers	Johnston link-and-pin; AAR knuckle (1930s)

Type and origin
Type and origin
Power type	Steam
Designer	Cape Government Railways; (H.M. Beatty)
Builder	Neilson, Reid and Company
Serial number	6089–6102
Model	CGR 6th Class
Build date	1902
Total produced	14

CGR 6th Class 4-6-0 1902
South African Class 6J 4-6-0
CGR 6th Class 4-6-0 1902; South African Class 6J 4-6-0
	SAR Class 6J, c. 1912
Power type
Type and origin
Power type	Steam
Designer	Cape Government Railways; (H.M. Beatty)
Builder	Neilson, Reid and Company
Serial number	6089–6102
Model	CGR 6th Class
Build date	1902
Total produced	14
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0 (Tenwheeler)
• UIC	2'Cn2
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	28+1⁄2 in (724 mm)
Coupled dia.	54 in (1,372 mm)
Tender wheels	33+1⁄2 in (851 mm) as built; 34 in (864 mm) retyred
Wheelbase	45 ft 8+1⁄2 in (13,932 mm)
• Axle spacing; (Asymmetrical)	1-2: 4 ft 9 in (1,448 mm); 2-3: 6 ft 7 in (2,007 mm)
• Engine	20 ft 8 in (6,299 mm)
• Leading	5 ft 6 in (1,676 mm)
• Coupled	11 ft 4 in (3,454 mm)
• Tender	14 ft 7 in (4,445 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:;
• Over couplers	53 ft (16,154 mm)
Height	12 ft (3,658 mm)
Frame type	Bar
Axle load	13 LT 8 cwt (13,620 kg)
• Leading	10 LT 18 cwt (11,070 kg)
• 1st coupled	12 LT 5 cwt (12,450 kg)
• 2nd coupled	13 LT 8 cwt (13,620 kg)
• 3rd coupled	12 LT 5 cwt (12,450 kg)
• Tender bogie	Bogie 1: 16 LT 15 cwt (17,020 kg); Bogie 2: 17 LT 8 cwt (17,680 kg)
• Tender axle	8 LT 14 cwt (8,840 kg)
Adhesive weight	37 LT 18 cwt (38,510 kg)
Loco weight	48 LT 16 cwt (49,580 kg)
Tender weight	34 LT 3 cwt (34,700 kg)
Total weight	82 LT 19 cwt (84,280 kg)
Tender type	XD (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4 permitted
Fuel type	Coal
Fuel capacity	5 LT 10 cwt (5.6 t)
Water cap.	2,730 imp gal (12,400 L)
Firebox:
• Type	Round-top
• Grate area	18.75 sq ft (1.742 m2)
Boiler:;
• Pitch	6 ft 9+1⁄2 in (2,070 mm)
• Diameter	4 ft 7 in (1,397 mm)
• Tube plates	11 ft 2+1⁄8 in (3,407 mm)
• Small tubes	182: 2 in (51 mm)
Boiler pressure	180 psi (1,241 kPa)
Safety valve	Ramsbottom
Heating surface:
• Firebox	107.6 sq ft (10.00 m2)
• Tubes	1,065 sq ft (98.9 m2)
• Total surface	1,172.6 sq ft (108.94 m2)
Cylinders	Two
Cylinder size	17 in (432 mm) bore; 26 in (660 mm) stroke
Valve gear	Stephenson
Couplers	Johnston link-and-pin; AAR knuckle (1930s)
Tractive effort
Performance figures
Tractive effort	18,780 lbf (83.5 kN) @ 75%
Operators
Career
Operators	Cape Government Railways; South African Railways
Class	CGR 6th Class, SAR Class 6J
Number in class	14
Numbers	CGR 155, 160, 287-294, 537-540; SAR 635-648
Delivered	1902
First run	1902
Withdrawn	1972

The South African Railways Class 6J 4-6-0 of 1902 was a steam locomotive from the pre-Union era in the Cape of Good Hope.

In 1902, fourteen 6th Class bar framed steam locomotives with a 4-6-0 wheel arrangement were placed in service by the Cape Government Railways. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class 6J.