New South Wales 48 class locomotive

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300px
GrainCorp's 48203 at Junee Locomotive Depot in March 2011
Specifications
Power type Diesel-electric
Builder AE Goodwin, Auburn
Serial number Alco 83701–83720, 83816–83825, 84121–84135
Alco G-3387-01 to G3387-40
Alco G-3420-01 to G-3420-40
Alco G-6013-01 to G-6013-40
Model Alco DL531
Build date 1959-1970
Total produced 165
UIC classification Co-Co
Gauge 1,435 mm (4 ft 8 12 in)
Wheel diameter 40 inches (1,016 mm)
Length Over headstocks:
44 ft 3 in (13.49 m),
Over coupler pulling faces:
48 ft 5 in (14.76 m)
Width 9 ft 9 in (2.97 m)
Height 14 ft 0 in (4.27 m)
Axle load 4801–4885:
12 tons 6 cwt (27,600 lb or 12.5 t)
4886–48165:
12 tons 16 cwt (28,700 lb or 13.0 t)
Locomotive weight 4801–4885:
74 tons 0 cwt (165,800 lb or 75.2 t)
4886–48165:
76 tons 12 cwt (171,600 lb or 77.8 t)
Fuel type Diesel
Fuel capacity 4801–4885:
500 imp gal (2,300 l; 600 US gal)
4886–48165:
700 imp gal (3,200 l; 840 US gal)
Lubricant capacity 116 imp gal (530 l; 139 US gal)
Coolant capacity 90 imp gal (410 l; 110 US gal)
Sandbox capacity 10 cu ft (0.28 m3)
Prime mover Alco 6-251B
Engine RPM range 375-1025
Engine type Four-stroke Inline diesel
Aspiration Turbocharged
Generator 4801–4845:
General Electric 5GT 584
4846–48165: Associated Electrical Industries TG 3602
Traction motors 4801–4885:
General Electric 761
4886–48165:
Associated Electrical Industries 253 CT
Cylinders 6
Cylinder size 9 in × 10.5 in (229 mm × 267 mm)
Top speed 75 mph (121 km/h)
Power output Gross:
1,050 hp (780 kW),
For traction:
950 hp (710 kW)
Tractive effort Continuous:
4801–4885: 40,200 lbf (178.82 kN)
at 8 mph (13 km/h)
4886–48165:
42,500 lbf (189.05 kN)
at 6.5 mph (10 km/h)
Career
Operator(s) New South Wales Government Railways
Number in class 165
Number(s) 4801-48165
First run September 1959
Preserved 4801, 4803, 4805, 4807, 4821, 4822, 4833
Current owner Graincorp, Greentrains, Junee Railway Workshop, Pacific National, RailCorp
Disposition 66 in service, 7 preserved, 29 stored, 63 scrapped

The 48 Class are a class of diesel locomotives built by AE Goodwin, Auburn for the New South Wales Government Railways between 1959 and 1970. Once the most ubiquitous locomotive in New South Wales (and Australia), they are based on Alco frames and prime movers, using General Electric (later Associated Electrical Industries) electrical equipment. The South Australian Railways 830 and Silverton Rail 48s classes are of a very similar design.

History[edit]

4807 at Goulburn in March 2012

The 48 Class were ordered to commence the conversion of branch lines to diesel traction with the first entering service in September 1959. Further orders saw 165 in service by October 1970. There were three versions:

  • Mark 1: 4801 – 4845
  • Mark 2: 4846 – 4885
  • Mark 3: 4886 – 48165

As well as branch lines they operated both main line and metropolitan services on every line in the state. Aside from a couple written off after accidents in the mid-1980s, withdrawals didn't commence in earnest until August 1994.[1] In December 1994 the first Mark 1s were sold.[2] By June 1997 FreightCorp's fleet was down to 120 units.[3]

Others have been withdrawn since and as at January 2014, 66 remained in service primarily with Pacific National. GrainCorp, Greentrains, Junee Railway Workshop and RailCorp also operate some.[4][5][6][7]

Railway Services Authority/RailCorp[edit]

Two were transferred by the State Rail Authority to the Railway Service Authority, these have since passed to RailCorp[7][8]

Silverton Rail/Greentrains[edit]

In December 1994 Silverton Rail purchased six from FreightCorp.[2] All were placed in service as their Silverton Rail 48s class.[3] Some of these remain in service in January 2014 in the ownership of Greentrains.[6][7]

Australian National/Genesee & Wyoming Australia[edit]

In December 1994 Australian National purchased two from FreightCorp[2] with 4813 rebuilt as DA7 for the narrow gauge Eyre Peninsula Railway and 4826 scrapped some years later at Port Augusta. As at January 2014 it remains in service with Genesee & Wyoming Australia renumbered 906.[9]

Austrac Ready Power/Junee Railway Workshop[edit]

Austrac Ready Power purchased four from a scrap dealer and placed three in service on their various services.[10] Following Austrac ceasing all passed to Junee Railway Workshop.[11]

Cargill Australia[edit]

In February 1997 4812 was rebuilt and repainted by FreightCorp at Delec Locomotive Depot for Cargill Australia for use as a shunter at their Kooragang Island plant numbered CAR1.[3][12] It was sold to Junee Railway Workshop.[8]

GrainCorp[edit]

GrainCorp have purchased 18 Mark 3s and are having them overhauled by Junee Railway Workshop at which point they are renumbered into the 482xx series.[5][13]

PL class[edit]

Seven Mark 2 locomotives were rebuilt by FreightCorp between 1999 and 2001 as the PL (for PortLink) class.[14][15] Changes included the short end cab nose being lowered, the cab altered, and the installation of air-conditioning. They were designed to operate in push-pull formation on intermodal container trains between Port Botany and Clyde/Yennora.

PL1 and PL2 were transferred to South Australia after the sale of FreightCorp to Pacific National for use at Keswick Terminal shunting for Great Southern Rail which was prior a National Rail contract. PL2 was transferred back to NSW with PL1 remaining in South Australia. In NSW the class saw use on the former South Maitland Railway hauling coal along with 48 class locos. After a long period of storage at Kooragang Island, PL2, PL3, PL5, PL6 and PL7 were scrapped in 2013.

Preserved[edit]

Currently there are seven preserved locomotives, four of them operational:

References[edit]

  1. ^ "48 Class" Railway Digest November 1994 page 32
  2. ^ a b c "State Rail's Locomotive Auction Results" Railway Digest January 1995 page 36
  3. ^ a b c "Motive Power Review - The 48 Class" Railway Digest June 1997 page 42
  4. ^ 48 Class Railpage
  5. ^ a b 48 Class (Graincorp) Railpage
  6. ^ a b 48s Class Railpage
  7. ^ a b c 48 Class Vicsig
  8. ^ a b "Touring the New South Wales Classics" Railway Digest July 2010 page 25
  9. ^ 906 Railpage
  10. ^ "New Austrac Loco Paint Scheme Unveiled" Railway Digest December 1995 page 13
  11. ^ 48 Class Junee Railway Workshop
  12. ^ "Privately-Owned Locos Show Off New Colours" Railway Digest May 1997 page 10
  13. ^ "GrainCorp handover" Railway Digest June 2010 page 15
  14. ^ PL Class Railpage
  15. ^ Railway Digest April 1999 page 36
  16. ^ Locomotive, Diesel 4803 Department of Environment & Heritage
  17. ^ Locomotive, Diesel 4805 Department of Environment & Heritage
  18. ^ Locomotive, Diesel 4807 Department of Environment & Heritage
  19. ^ 4833 Loco 4833 Blogspot

Further reading[edit]

  • New South Wales Rail System Locomotives. Sydney: Archives Section, State Rail Authority of New South Wales. 1984. 
4836 in weathered '125th Anniversary of NSW Railways' livery at Casino in 1987