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PKP class Pt31 - Wikipedia

From Wikipedia, the free encyclopedia

PKP Pt31

Pt31 locomotive

Type and origin
Power type	Steam
Builder	Fablok
Build date	1932–1940
Total produced	110

Specifications
Configuration:
• Whyte	2-8-2
• UIC	1′D1′ h2
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Leading dia.	1,000 mm (39.37 in)
Driver dia.	1,850 mm (72.83 in)
Trailing dia.	1,200 mm (47.24 in)
Tender wheels	1,000 mm (39.37 in)
Minimum curve	150 m (492 ft 2 in)
Wheelbase:
• Engine	12.200 m (40 ft 0 in)
• Drivers	6.000 m (19 ft 8 in)
• Tender	5.600 m (18 ft 4 in)
Length	23.955 m (78 ft 7 in) (with tender)
Height	4.555 m (14 ft 11 in)
Axle load	18.3 tonnes
Loco weight	106.2 tonnes
Tender weight	68.5 tonnes
Total weight	174.7 tonnes
Tender type	32D29
Water cap.	32 m³ (1,100 cu ft)
Tender cap.	10.0 tonnes
Firebox:
• Grate area	4.51 m² (48.5 sq ft)
Boiler pressure	15 kg/cm² (1.47 MPa; 213 psi)
Heating surface	234.2 m² (2,521 sq ft)
Superheater:
• Heating area	91.46 m² (984.5 sq ft)
Cylinders	Two, outside
Cylinder size	630 mm × 700 mm (24.80 in × 27.56 in)
Valve gear	Heusinger

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	Pt31
Numbers	Pt31-1 to Pt31-98
Locale	Poland
Delivered	1932
Retired	1979
Preserved	2

Pokropiński 2007, p. 254

PKP Class Pt31 is a Polish steam locomotive of Polskie Koleje Państwowe, designed for hauling heavy long-distance passenger trains, built in 1932-1940. The designation stood for fast passenger (P) 2-8-2 (t) steam locomotive designed in 1931.

The locomotive was entirely Polish design, designed in Fablok in Chrzanów. Polish Ministry of Transport ordered two classes of fast passenger locomotives in Polish factories to compare their merits. Fablok 2-8-2 design was to be named Pt29, but the design was delayed and accepted on in 1931, thus becoming Pt31.^[1] Three prototypes were built in 1932 and successfully competed with 4-8-2 Pu29 locomotive - both were similar, but more compact Pt31 better suited Polish turntables.^[1] From 1934, a series production for the PKP followed, and by the outbreak of World War II in 1939, 98 were made, numbered Pt31-1 to 98.^[2] Further twelve were completed in 1940 under German occupation.^[3]

Pt31 became the strongest machines hauling long-distance passenger trains in Poland. A maximum speed was 110 km/h (68 mph). It could achieve at least 105 km/h with a train of 600 tonnes (590 long tons; 660 short tons), or could haul the train of 810 tonnes (800 long tons; 890 short tons) with lower speed.^[2]

During the war, 54 locomotives were captured by the Germans and impressed into service as DR class 19¹, with numbers 101 to 154.^[3] Further twelve were first designated as class 39¹⁰, finally class 19¹, with numbers 155 to 166.^[3] Remaining 44 Pt31 locomotives were captured by the Soviets in Poland, 21 of them had been converted to broad gauge by 1941, transliterated as ПТ-31 class.^[3] A number of Soviet locomotives were captured again by the Germans from 1941, and received German numbers up to 180.^[3]

After World War II, Poland reclaimed 65 locomotives, receiving new numbers Pt31-1 to 66 (number 46 was mistakenly assigned to Pu29-3).^[4] Before that, they temporarilly served in Czechoslovakia as class 488, Austria, Hungary and both German countries.^[5] Three locomotives of wartime production remained on Austrian railways as ÖBB class 919 until 1961, and several broad-gauge remained in the Soviet Union.^[5]

These locomotives were used until 1979 in Poland. Only two were preserved, in non-working condition.^[4] A post-war development was PKP class Pt47.^[6]

References

^ ^a ^b Pokropiński 2007, p. 92-96.
^ ^a ^b Pokropiński 2007, p. 96-98.
^ ^a ^b ^c ^d ^e Pokropiński 2007, p. 98.
^ ^a ^b Pokropiński 2007, p. 104-106.
^ ^a ^b Pokropiński 2007, p. 100-103.
^ Pokropiński 2007, p. 148.

Wikimedia Commons has media related to PKP class Pt31.

Pokropiński, Bogdan (2007). Parowozy normalnotorowe produkcji polskiej [Normal gauge steam locomotives of Polish manufacture] (in Polish). Warsaw: Wydawnictwa Komunikacji i Łączności. pp. 96–106, 254. ISBN 978-83-206-1617-0.

Rolling stock of Poland

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

Electric

Steam

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 35WE 36WE 60WE 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

Series withdrawn from service shown in italics.
* Own classes - steam locomotive classes built specially for PKP order in Poland or abroad
** Foreign origin class

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