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Caterpillar 621 Wheel Tractor-Scraper

Caterpillar 621 Wheel Tractor-Scraper
Mini specs
Closed Edition

The Caterpillar 621 in 1:50th scale was released by NZG in 1970 with #122.

The Caterpillar 621 Wheel Tractor-Scraper scale model was already since the early years a part of my Earthmoving collection and was so unnoticed for more than thirty years in my possession. With the recent arrival of the Caterpillar 621K Scraper I had to create space in the display cabinet and only then I noticed that the NZG model of age fell apart and had never been complete. That's why I was very happy that I got the opportunity through a collector friend to obtain for a very decent price a mint boxed copy.

My first impression: A must have within every Caterpillar Wheel Tractor-Scrapers collection. For me a very valuable scale model because it brings back the good memories of the days I used to attend scale model swap meetings with my Dad.

Soon I will add the complete review with more pictures from the scale model, machine in 1:1 and background information. So stay tuned for more!

Caterpillar 621 Wheel Tractor-Scraper

The Caterpillar 621 Wheel Tractor-Scraper was introduced in 1965. It was the “replacement” for the Caterpillar 619C Scraper. The 621 however was equipped with fully hydraulic controls. The 621 had a Caterpillar D336 diesel Engine producing 300 flywheel horsepower (FWHP) and a Heaped capacity of 20.0 yd3 and a top speed of 30MPH.

The 621(A) was given a 23H or 43H (USA) and 9NL (Brazil) serial number prefix. Production of the 621 ended in 1973. The Caterpillar 621 was replaced by the Caterpillar 621B.

If you are in the possession of photos from the 1:1 Caterpillar 621 Wheel Tractor-Scraper I would be happy if you send your response to

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