Unimog 421

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Mercedes Benz
2006 07 15 Wörth 0144 (8584665235) (2) .jpg
Unimog 421
Manufacturer: Daimler-Benz AG
Sales designation: U40, U45, U52, U60, U600, U421
Production period: 1966-1989
Engines: 29 kW - 44 kW
Previous model: none
Successor: Unimog 407

The Unimog 421 is a vehicle from the Unimog series from Mercedes-Benz. The Daimler-Benz AG built from 1966 to 1989 in the Mercedes-Benz plant in Gaggenau total of 18,995 pieces. The Unimog 421 closed the gap between the Unimog 411 and the Unimog 406 and thus formed the first model in the light series . It was available with a short or long wheelbase and with only one axis as a power car .

The vehicles of the 421 series are visually very similar to those of the 403 and 406 series, but the convertible version looks more compact and narrow. The most important distinguishing feature of the 421 series is the air inlet, which is always on the right-hand side of the bonnet. In terms of design, the Unimog 421 is a mixture of several vehicles: the frame construction of the flat ladder frame was largely adopted from the Unimog 411, and the engine concept of the car engine as well as axles and transmission are derived from the Unimog 411. The appearance is derived from the Unimog 406.

The Unimog 431 is derived from the Unimog 421 and was manufactured in Argentina for the South American market between 1969 and 1971. For this purpose, an open series with 601 vehicles and a closed series with 152 vehicles were produced from parts from Gaggenau and Argentinian production. The output of 44 kW corresponded to that of the U60, but the wheelbase was only 2205 mm.

Engines

The Unimog 421 was equipped with inline four-cylinder pre-chamber engines; if the prototypes are taken into account, a total of four different engines were used. However, the series vehicles only received the types OM 621, OM 615 and OM 616 from the Daimler-Benz passenger car range.

engine Displacement power Years of construction
OM 636 1767 cc 40 hp (29 kW) at 3200 min -1 1964–1965
(prototypes only)
OM 621 1988 cc 40 hp (29 kW) at 3000 min -1 1966-1968
OM 615 2197 cc 45 HP (33 kW) at 3000 min -1 1968-1970
OM 616 2404 cc 52 HP (38 kW) at 3000 min -1 up to 60 HP (44 kW) at 3500 min -1 1970-1989

Model of the Unimog 421

Twenty different models of the Unimog 421 were produced, four of them for other manufacturers.

Model from Daimler-Benz

Model Model name Cab wheelbase power Production numbers Remarks
421.122 U40, U45 open 2250 mm 29 kW, 33 kW 2,647
421.123 U40, U45 closed 2250 mm 29 kW, 33 kW 3.215
421.124 U52 open 2250 mm 38 kW 1,145
421.125 U52 closed 2250 mm 38 kW 1.995
421.126 U60, U600L open 2605 mm 44 kW 4th U600L has a double cabin
421.128 U60, U600L open 2605 mm 44 kW 3,252 U600L has a double cabin
421.129 U60, U600L closed 2605 mm 44 kW 599 U600L has a double cabin
421.130 U40T, U45T, U55T open - 29 kW, 33 kW, 40 kW 6th Power end
421.131 U40T, U45T, U55T closed - 29 kW, 33 kW, 40 kW 210 Power end
421.132 U60T, U600T open - 44 kW 35 Power end
421.133 U60T, U600T closed - 44 kW 372 Power end
421.140 U52, U600 open 2250 mm 38 kW 1,805
421.141 U52, U600 closed 2250 mm 38 kW 3,368
421.162 U60 open 2605 mm 44 kW 13
421.163 U60 closed 2605 mm 44 kW 25th
421.310 U421 open 2250 mm 41 kW 304

Models for other manufacturers

Some models of the Unimog 421 were manufactured as parts sets for special vehicles from other manufacturers, For example, for the operation of the forestry Uniknick or chains of UNITRAC .

Model Manufacturer Model name Engine power Production numbers
421.160 Hoes Articulated tractor
421.164 Werner forest and industrial technology Uniknick UK52, UK60 38 kW, 44 kW 75
421.170 Tractortecnic Unitrac UT45 38 kW 50
421.172 Trenkle Tremo 38 kW 250

Technical specifications

Parameters U 40 U 45 U 52 U 60
Years of construction 1966-1971 1966-1971 1970-1988 1971-1988
Dimensions 2450 kg 2700 kg 2850 kg
Permissible total mass 3700 kg 4000 kg 4100 kg ?
length 4005 mm 4020 mm
width 1865 mm 1825 mm 1800 mm
height 2180 mm 2230 mm
wheelbase 2250 mm 2605 mm
Gauge 1360 mm 1400 mm
Loading area length 1475 mm 1750 mm
Loading area width 1500 mm
Platform height 400 mm
tires 10.5-18 "6PR
Engine model OM 621 OM 615 OM 616
Engine type Water-cooled in-line four-cylinder diesel engine
Mixture preparation Pre-chamber injection
Displacement 1988 cc 2197 cc 2404 cc
Bore × stroke 87 mm × 83.6 mm 87 mm x 92.4 mm 91 mm x 92.4 mm
Nominal power (DIN 70020) 29.5 kW (40 hp) at 3000 min -1 33 kW (45 hp) at 3000 min -1 38 kW (52 hp) at 3000 min -1 44 kW (60 hp) at 3500 min -1
Top speed 54 km / h 53 km / h 67 km / h
source

gallery

Individual evidence

  1. a b c Daimler AG: Series 421
  2. Carl-Heinz Vogler: Unimog 406 - Type history and technology . GeraMond-Verlag, Munich. 2016. ISBN 978-3-86245-576-8 . P. 113
  3. Unimog Community: Unimog U 421 [1966 to 1989]
  4. Carl-Heinz Vogler: Unimog 411 - Type history and technology . GeraMond-Verlag, Munich. 2014. ISBN 978-3-86245-605-5 . P. 22
  5. Carl-Heinz Vogler: Unimog type atlas. All Unimog classics from 1946 to 1993. GeraMond, Munich 2015, ISBN 978-3-86245-026-8 . P. 89
  6. ^ Peter Kautz: Mercedes-Benz Unimog 421

Web links

Commons : Unimog 421  - Collection of images, videos and audio files