Six-axle motor locomotives intended for heavy shunting and pulling services have a tradition of over 30 years at CKD LOKOMOTIVKA. Of the over 13,000 motor locomotives manufactured, almost 8,000 are six-axle locomotives with electrical power transfer.

The first CME 3 class locomotive to be manufactured

The second CME 3 locomotive manufactured

The prototype of a six-axle locomotive was produced in 1963. The fact that this type of locomotive has been in demand for already 30 years now testifies to the simplicity and reliability of its design, which was of course constantly evolving and being perfected, while preserving maximum inheritance and interchangeability of its main nodes.

In many European and Asian countries, locomotives operate under extreme climactic conditions. For example, beyond the Arctic Circle (in Vorkut) and in Siberia (the Baikal-Amur Highway) they work at -50 °C, and on the other hand in the deserts of Turkmenistan, Syria and Iraq at temperatures of +45 °C. A total of 7854 six-axle locomotives in ten various variations have been manufactured at CKD:

Besides this, another 400 T 669.1 locomotives were manufactured in Slovakia according to original CKD documentation.

This six-axle motor locomotive with an output of 1000 kW is intended for general-purpose usage on railways with a gauge from 1435 to 1676 mm. It is especially suited for:

• shunting services in rail yards with trains of up to 4000t
• track services in freight transport (pulling, manipulation trains)
• heavy service on spur lines of foundries, mines, chemical plants, etc.

The 5000th CME 3 locomotive for the USSR

This motor locomotive with 1000 kW output with electrical DC power transfer is of hood unit type. The main frame is anchored on two three-axle undercarriages. The diesel tank hangs between the bogies on the underside of the frame. If the locomotive is equipped with an electrodynamic brake, space is left inside the tank for batteries. The operator's cab is located between the front and short rear hood. The engine compartment contains a six-cylinder inline diesel engine with a DC traction generator, cooling block, a hydromechanical transmission, brake compressor, and traction motor cooling ventilators. The rear hood contains an electrical distributor and electrodynamic brake. Built into the front of the main frame is an automatic coupler or coupling assembly as per the customer's wishes. The locomotive is equipped with the latest features, which heighten its technical performance while at the same time decreasing the user's costs. The degree of installed facilities of the locomotive depends on the customer.

• Electrodynamic brake (EDB)

EDB braking mode with an output of 1140 kW is suitable for shunting service, as it conserves 90% of brake shoes. For track or pulling services, the incline mode of the EDB is used, which is capable of maintaining constant speed on an incline.
• Electronic regulation of driving and braking

Permits usage of higher power outputs at lower diesel engine RPM, and thus lowers consumption by 10-15%. Driving and EDB control is regulated very comfortably with one controller lever; locomotive reactions are immediate. The control of startup currents and thus also tractive forces together with perfect anti-slip protection permits driving at the edges of adhesion.
• Tempering of diesel engine coolant

Leads to quicker attainment of operating temperature after start; in conditions of extreme frost at lower outputs, it prevents undercooling of the diesel engine. The result is once again reduced fuel consumption. The electrical heat source can be either external or the traction generator.
• Multi control

Permits control of two locomotives from one operator's position, including the electrodynamic brake.
• Locomotive taxiing with the assistance of the starting battery

The batteries can be used to run the traction motors for short-term taxiing of the locomotive when the diesel engine is not running.
• Locomotive remote control

Electronic control permits remote control of the locomotive including the EDB, via the use of a control radio station.
• Lubrication of wheel pair treads

Pulsed lubrication of treads with plastic, ecologically safe lubricant permits easier wheel movement and lowers wear of wheel hoops and rails.

Basic Technical Specifications

Wheel arrangement	Có Có
Diesel engine output	800-1 000 kW
Locomotive weight	114-126 t
Axle weight	19-21 t
Maximum speed	95 km/h
Sustained speed	10 km/h
Sustained tractive force	265 kN
Maximum tractive force	362 kN
Transmission to axle	76:15
Drive wheel diameter	1 050 mm
Gauge	1 435-1 676 mm
Locomotive length	17 220 mm
Bogie pivot distance	8 660 mm
Bogie wheelbase	4 000 mm
Min. turning radius	80 m
Diesel engine type	K 6S 310 DR
Diesel engine RPM	750 1/min.
Fuel consumption	220 g/kW.h
Fuel capacity	5 300 l
Electrical equip. mfg.	ČKD TRAKCE, a.s.
Traction generator	TD 812
Traction motor	TE 019
Electrodynamic brake	incline/stop
EDB output	1 140 kW

layout drawing