MAZ-525

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MAZ-525
Overview
Manufacturer	MAZ (1950–1959) BelAZ (1959–1965)
Also called	BelAZ-525 (1959–1965)
Production	1950–1965
Assembly	Minsk (1950–1959) Zhodino (1959–1965)
Body and chassis
Class	Mining truck
Layout	FR layout
Related	MAZ-530
Powertrain
Engine	38.8L D-12A V12 diesel
Transmission	4-speed (5-speed since 1952) hydromechanical with an additional clutch petal
Dimensions
Wheelbase	4,780 mm (188 in)
Length	8,335 mm (328 in)
Width	3,220 mm (127 in)
Height	3,675 mm (145 in)
Curb weight	24,380 kg (53,749 lb)
Chronology
Successor	BelAZ-580

MAZ-525 (BelAZ-525 from 1959) was a Soviet heavy truck produced by the Minsk Automobile Plant. Development started in 1949 at the Yaroslavl Automobile Plant Design Bureau as the YaAZ-225. It was planned to install a cab from the YaAZ-200, offset to the left. Further technical documentation was passed on to MAZ where the design was substantially enhanced.

The cab appearance changed slightly during production. On the early models, the hood was the same width as the cab; in the later editions, it became much narrower. Initially, a guard was installed on the hood sides for safety while the engine was serviced, but it was later removed.

In 1952, the MAZ-E-525D was developed to work in tandem with a 15 m³ (530 cu ft) D-189 tractor-scraper. In 1954, the joint efforts of MAZ, Institute of Mining and Kharkov Trolleybus Depot developed a trolley dump truck equipped with two D-202 trolleybus electric motors with a total capacity of 172 kW (231 hp). In 1964, NAMI developed a similar truck called the DTU-25. In 1959, the MAZ-525 was used as a basis for the MAZ-541 aircraft tug, of which three were built. Also in 1959, the MAZ-525A tractor was developed as part of a road train with the 45-ton BelAZ-5271 semitrailer, but this did not enter production because the engine was not powerful enough.

In 1959, production was transferred to the Belarusian Automobile Plant, where the truck was produced until 1965 under the name BelAZ-525.

The truck continued to operate until the early 1970s.

• MAZ-525 on site "Auto model bureau" (in Russian)