PKP class SM15

4 ft 8+1⁄2 in)Bogies2Length12,600 mm (500 in)Loco weight70 TFuel consumption210 g/kmEngine typefour-strokeTransmissionHydraulic (Voith system)

Performance figures
Maximum speed	60 km/h
Power output	550 kW

Career
Operators	PKP
Class	SM15 Ls750H (Industry) Ls750Hu (Industry)
Number in class	27 (PKP)
Delivered	1963

The SM15 (factory designation 12D) is a Polish diesel shunter used by PKP and industry ^[1] — where it carried the designation Ls750H. It is based on the Soviet ТГМ3 (TGM3) locomotive.

History

Between the years 1963–1966, a total of 56 locomotives had been produced — 27 of which were used by PKP.^[2] Of the latter 27, the first two units (SM15-01 and SM15-02) were built at the Людиновский тепловозостроительный завод (en: Lyudinovo Diesel Locomotive Factory) and exported to Poland. Production then resumed at the Fablok factory in Chrzanów where the remaining 25 units, earmarked for PKP, were built.

The newly built SM15s were assigned to the depot in Kraków Płaszów, before being withdrawn from service in the late 1960s and early 1970s, when the SM42 series replaced them. Despite their relatively short operational history, the engineers who drove the locomotives remember them as being very powerful machines.

Technical data

The SM15 is equipped with a Soviet 550 kW diesel engine (a number of SM15s had Polish V12CD9 engines installed, rather than the Soviet variant) with hydromechanical transmission. Certain models destined for use in industry had hydraulic transmission, and these carried the designation Ls750Hu. The SM15 is a B′B′ locomotive, which means that the unit runs on two bogies, with all axles powered.

The main reason behind the SM15's short operational lifespan was the unreliability of its transmission and power units.

Preserved Units

Currently, there are three known examples of the SM15 in preservation:

• SM15-17 is an exhibit at the Warsaw Railway Museum
• SM15-22 has been kept back as a monument at the Technical Rail College in Tarnowskie Góry

References

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