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Tom Cleaver
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Tamiya 1/48 SU-122 Assault Gun

April 21, 2021 · in Armor · · 6 · 1.9K


The was an assault gun based on the chassis of the T-34 tank. Its development began with an April 1942 specification for mobile assault guns using weapons of 122 mm or higher. The SU-122 was designed at the Uralsky Machine Building Factory (UZTM), and was armed with the 122 mm M-30 howitzer.. Known as the U-35 at the factory, the first 25 production vehicles rolling off the assembly line at the end of 1942.

In combat, the 122mm weapon proved to be useful for both close support work and in the anti-tank role, where its high explosive round often proved powerful enough to knock out enemy tanks from the sheer concussion effect.

Production of the SU-122 continued into the summer of 1944, by which time over 1,100 had been produced. The introduction of the Tiger tank, which was fully capable of knocking out the SU-122, combined with the fact the M-30 howitzer was only marginally effective against the Tiger, led to its discontinuance.

The SU-122 last saw combat in 1950 with the North Koreans during the invasion of South Korea.

The Kit:

This kit by is a follow-up to the earlier T-34/76 (kit #32515). It is not a “shrink down” of the 1:35 SU-122 (kit #35093). This kit has many finer details and is overall more correct than the larger kit. The kit comes with 222 parts in dark green plastic, along with the now-familiar cast metal lower hull tub, a length of string for the tow cables, a few poly caps plus the decal and instructions sheets. It shares sprue A from the T-34/76 kit with the running gear and other bits.

The small decal sheet is typical of Tamiya, with well printed markings on slightly-thick carrier film. It provides generic markings allowing a modeler to create any SU-122. The boxart and instructions provide information on three: one overall green shown on the box art, one camouflaged vehicle shown in the instructions, and a third shown on the box side in winter whitewash finish.


I call these little Tamiya armor kits “weekend models.” I don't mean that in a bad way. They are well designed and go together easily over the course of an evening. One can then spend the rest of the modeling time available over a weekend painting and weathering - of course, this is a “weekend” that doesn't include lots of “honey-do's” or “daddy-can-we's,” but even with those, it's not a long project. I now have a system for assembling these Tamiya tanks that really does make the whole process quite easy.

First I assemble the hull and turret separately, other than the items like tools and such that will go on later. Then I paint the model, including all the road wheels and suspension parts and tracks on the two A sprues. Then I apply the decals. Following that, I give a wash, and then weather the road wheels and track with mud or whatever. Then I return to assembly, construct the suspension and road wheels and attach them, then attach the tracks. I then attach the upper hull to the lower hull, then glue on the jacks, shovels, and whatever else goes on the hull, then I attach the turret (in the case of this SU-122,that last is not part of the process). The system works perfectly with every one of these kits, and is very easy.

Details on the road wheels, drive sprockets and idler wheels is excellent. The rubber rimmed road wheels have a good tread pattern and well defined rim and bolt head details and a separate center hub cap for good definition and are simply glued in place on the axles. While there are four large pin ejector marks on the inside of the inner road wheels, these won't be seen after assembly unless you make habit of turning the model upside down.

The tracks are plastic link and length with nice link details. If you leave the drive sprocket and idler wheels loose, this will make attaching the track easier.

The upper hull is in one piece, with openings for the upper rear engine intake screen door and side engine intake louvers, which are separate to allow good detail definition. The front driver's hatch, upper hull hatches and visors and the large gun mounting are also separate. Once I had the upper hull assembled, I proceeded to paint the model.

Paint and markings:

I decided to do the camouflaged version, and used Tamiya XF-26 Deep Green and XF-79 Linoleum Deckl Brown for the upper camouflage, with the lower hull and the wheels and sprockets all painted XF-26 with the wheels and sprockets left on the sprues. I hand painted the rubber wheels, and then gave all this a wash of thinned red-brown to simulate mud.

When this was completed, I assembled the tracks, which present no difficulty when done before mating the upper and lower hull sub-assemblies together.

The upper hull is attached to the lower hull with two small screws via locating holes under the rear screen door panel and front hull gun mounting opening.


This is one of the easiest kits in Tamiya's line of armor to assemble. It represents an important vehicle in the Soviet armored forces of the Great Patriotic War, and is a worth addition to any collection alongside the T-34, KV-1 and KV-2 tanks.

Reader reactions:
6  Awesome

4 additional images. Click to enlarge.

6 responses

  1. Tom Cleaver doing an armor I’ve seen it all!

    Love the weathering. Great job comrad!

  2. What a beast. Russia kept the tracks rolling in Developing crazy design idea like that
    Gun big, Chassis weak. Nice camouflage and weathering !

  3. Yep, this is a beast, indeed!
    An excellent model, Tom!

  4. Certainly looks like a beast.

  5. A mean looking machine, great work!

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