PKP class Pt47

4 ft 8+1⁄2 in) standard gaugeLeading dia.1,000 mm (39.37 in)Driver dia.1,850 mm (72.83 in)Trailing dia.1,200 mm (47.24 in)Tender wheels1,000 mm (39.37 in)Minimum curve150 m (492 ft 2 in)Length24.255 m (79 ft 7 in)Axle load18.0 tonnes (17.7 long tons; 19.8 short tons)Adhesive weight83.2 tonnes (81.9 long tons; 91.7 short tons)Loco weight104.2 tonnes (102.6 long tons; 114.9 short tons)Tender weight77.9 tonnesTotal weight182.1 tonnes (179.2 long tons; 200.7 short tons)Tender type33D48Water cap.33 m³ (1,200 cu ft)Tender cap.17.0 tonnes (16.7 long tons; 18.7 short tons)Firebox:​ • Grate area4.5 m² (48 sq ft)Boiler pressure15 kg/cm² (1.47 MPa; 213 psi)Heating surface:​ • Firebox19.8 m² (213 sq ft) • Total surface239.2 m² (2,575 sq ft)Superheater:
​ • Heating area99 m² (1,070 sq ft)CylindersTwo, outsideCylinder size630 mm × 700 mm (24.80 in × 27.56 in)

Performance figures
Maximum speed	110 km/h (68 mph)
Power output	2,000 hp (1,500 kW)
Tractive effort	13,500 kgf (29,760 lbf)

Career
Operators	PKP
Class	Pt47
Numbers	Pt47-1 to Pt47-180
Locale	Poland

PKP Class Pt47 is a Polish steam locomotive. An improvement of the successful pre-war PKP class Pt31 class, the main difference is the addition of circular tubes in the fire chamber, thereby significantly increased boiler performance. This class also featured a superheater and many have mechanical stokers to feed coal into the firebox. 180 locomotives were built in total between 1948 and 1951.^[1] The designation stood for fast passenger (P) 2-8-2 (t) locomotive designed in 1947.

Although heavy, the Pt47 is powerful and fast. Its main use was to carry heavy fast passenger trains, especially on long distance routes, for example on the difficult route from Cracow to Krynica. They were withdrawn from regular service in 1988.^[1] Fifteen survived, mostly in non-working condition.^[1]

The Pt47 easily reached speeds of 100 km/h (62 mph), with a heavy train, although is not as refined as the PKP class Pm36 - especially on routes with a lower quality track. A maximum speed of 110 km/h (68 mph) could be achieved even with a train of 600 tonnes (590 long tons; 660 short tons). In the 1950s these machines were could travel 824 km (512 miles) per day.^[2]

At first, German tenders from class 41 or 44 locomotives were used, designated 34D44.^[1] From 1949, Polish tenders 33D48 were manufactured in Pafawag, next rebuilt to 27D48, when fitted with a mechanical stoker (water capacity 33 m³, then 27 m³).^[1]

Nicknames

• Petucha - after the first two letters of the name

References

• "Pt47 article at Steam locomotives site". Retrieved February 20, 2006.
• Bogdan Pokropiński (2007). Parowozy normalnotorowe produkcji polskiej [Normal gauge steam locomotives of Polish manufacture] (in Polish). Warsaw: Wydawnictwa Komunikacji i Łączności. ISBN 978-83-206-1617-0.

Diesel

Standard gauge	SM01 SM02 SM03 SM04 SM15 SM25 SM30 SP30 SM31 SP32 SM40 ST40 SM41 SM42 SP42 SU42 ST43 ST44 SP45 ST45 SU45 SU46 SP47 SM48 ST48 SU160
Narrow gauge	Ld1 Lyd1 Lyd2 Lxd2

ElectricSteam

Standard gauge*	Ok22 OKl27 OKz32 Ol49 Os24 Pm36 Pt31 Pt47 Pu29 TKh49 TKt48 Tr21 Ty23 Ty37 Ty42 Ty43 Ty45 Ty51 Ty246
Standard gauge**	Od2 Oi1 Oi2 Ok1 OKi1 OKi2 OKl2 OKl12 OKo1 Ol12 Ot1 Pd1 Pd4 Pd5 Pf1 Pf12 Pk1 Pk2 Pm2 Pm3 Pn12 Pt1 Th1 Th3 Th24 Ti1 Ti2 Ti4 Ti11 Ti12 Ti16 Ti17 TKh1 TKh2 TKi1 TKi3 TKp1 TKp11 TKp101 TKt1 TKt2 TKt3 TKw1 TKw2 Tp1 Tp2 Tp3 Tp4 Tp15 Tp102/104 Tr1 Tr5 Tr6 Tr11 Tr12 Tr20 Tr201/203 Tr202 Tw1 Tw12 Ty1 Ty2 Ty3 Ty4 Ty5
Narrow gauge	Px27 Px29 Px38 Px48 Px49 T49 Tw47 Tw53 Tx23 Tx26

Multiple units

Electric	14WE/EN61 19WE 33WE 35WE 36WE EW51 EW52 EW53 EW54 EW55 EN56 EN57 EW58 ED59 EW60 EN62/EN76/EN96 ED70 EN71 ED72 ED73 ED74 EN75/ER75/ED160 EN77 ED78 EN80 EN81 EW90 EW91 EW92 EN94 EN95 EN97 EN100 ED161 ED250
Diesel	222M 810** MR/MRD** SN51 SN52 SN60 SN61 SD80** SN80 SN81 SN82** SN83** SN84** SD85** SA101 SA102 SA103 SA104 SA105 SA106 SA107 SA108 SA109 SA110 SA131 SA132 SA133 SA134 SA135 SA136 SA137 SA138 SA139 VT627**

Metro cars