South African Class 6H 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	52 ft 11+3⁄4 in (16,148 mm)
Height	12 ft 10 in (3,912 mm)
Frame type	Plate
Axle load	12 LT 11 cwt (12,750 kg)
• Leading	11 LT 14 cwt (11,890 kg)
• Coupled	12 LT 11 cwt (12,750 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 13 cwt (38,250 kg)
Loco weight	49 LT 7 cwt (50,140 kg)
Tender weight	34 LT 3 cwt (34,700 kg)
Total weight	83 LT 10 cwt (84,840 kg)
Tender type	XD (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4, XP1, XS 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 sq ft (1.7 m2)
Boiler:;
• Pitch	6 ft 10 in (2,083 mm)
• Diameter	4 ft 6 in (1,372 mm)
• Tube plates	11 ft 2+1⁄8 in (3,407 mm)
• Small tubes	185: 1+7⁄8 in (48 mm)
Boiler pressure	180 psi (1,241 kPa); 170 psi (1,172 kPa) adjusted
Safety valve	Ramsbottom
Heating surface:
• Firebox	115 sq ft (10.7 m2)
• Tubes	1,015 sq ft (94.3 m2)
• Total surface	1,130 sq ft (105 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	5871–5891
Model	CGR 6th Class
Build date	1901
Total produced	21

CGR 6th Class 4-6-0 1901 Neilson Reid
South African Class 6H 4-6-0
CGR 6th Class 4-6-0 1901 Neilson Reid; South African Class 6H 4-6-0
	CGR 6th Class no. 607, then no. 547, SAR Class 6H no. 629, at Midlandia Loco, Noupoort
Power type
Type and origin
Power type	Steam
Designer	Cape Government Railways; (H.M. Beatty)
Builder	Neilson, Reid and Company
Serial number	5871–5891
Model	CGR 6th Class
Build date	1901
Total produced	21
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	52 ft 11+3⁄4 in (16,148 mm)
Height	12 ft 10 in (3,912 mm)
Frame type	Plate
Axle load	12 LT 11 cwt (12,750 kg)
• Leading	11 LT 14 cwt (11,890 kg)
• Coupled	12 LT 11 cwt (12,750 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 13 cwt (38,250 kg)
Loco weight	49 LT 7 cwt (50,140 kg)
Tender weight	34 LT 3 cwt (34,700 kg)
Total weight	83 LT 10 cwt (84,840 kg)
Tender type	XD (2-axle bogies); XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XM2, XM3, XM4, XP1, XS 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 sq ft (1.7 m2)
Boiler:;
• Pitch	6 ft 10 in (2,083 mm)
• Diameter	4 ft 6 in (1,372 mm)
• Tube plates	11 ft 2+1⁄8 in (3,407 mm)
• Small tubes	185: 1+7⁄8 in (48 mm)
Boiler pressure	180 psi (1,241 kPa); 170 psi (1,172 kPa) adjusted
Safety valve	Ramsbottom
Heating surface:
• Firebox	115 sq ft (10.7 m2)
• Tubes	1,015 sq ft (94.3 m2)
• Total surface	1,130 sq ft (105 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%; 17,740 lbf (78.9 kN) adjusted
Operators
Career
Operators	Cape Government Railways; South African Railways
Class	CGR 6th Class, SAR Class 6H
Number in class	21
Numbers	CGR 278–286, 601–612 (541–552); SAR 614–634
Delivered	1901
First run	1901

The South African Railways Class 6H 4-6-0 of 1901 was a steam locomotive from the pre-Union era in the Cape of Good Hope.

In 1901, 21 6th Class 4-6-0 steam locomotives were placed in service by the Cape Government Railways, built to the older 6th Class designs with plate frames. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class 6H.