The Case 30 series was started by the 930 model equipped with a 6.6-liter six-cylinder engine in 1959. The following year, four-cylinder models were introduced. The 430 had a 2.4-liter gasoline or 3.1-liter diesel engine, the 530 had a 2.6-liter gasoline or 3.1-liter diesel engine. The diesel engine in the 630 was the same size as in the smaller models, the 730 had a displacement of 4.4 liters, and the 830 had 4.9 liters. All models except the 930 were also available with gasoline engines, and the 730 to 930 models could be equipped with LPG engines. According to official tests, the small diesels were cited as the most economical on the market.

The basic transmission in the smaller models was 4+1. The next option was the 8+8 Shuttle, in which the reverse speeds were 25% faster than the corresponding forward gear. The Tripl-Range transmission had 12+3 speeds. In this version, the road speed for the 530 was as much as 36 km/h instead of 22 km/h. The larger models were slower. The basic transmission in the 730 and 830 was 8+2, and the 930 had 6+2 gears.

There was a jump in engine weight from the 2100-kilogram 630 to the 2800-kilogram 730. From the 730 upwards, the Case-O-Matic torque converter was available, which allowed all gears to be selected without using the clutch. The first version of the system was introduced in 1956.

In 1962, the 930 Comfort King was introduced, which had a foot clutch instead of a hand clutch in the Case-O-Matic, and the fuel tank was moved to the rear. In 1964, the Draft-O-Matic draft control system was introduced, based on sensing the pull arms.

In 1966, the first over 100 hp two-wheel-drive Case was introduced at the top of the line — the 1030 Comfort King. It had a cab appearance similar to later Agri King models. The transmission had 8 speeds and the PTO (power take-off) speed was only 1000 rpm.

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