The QT4-24 semi-automatic block making machine is a mechanical vibration type block machine engineered for entrepreneurs and small-to-medium brick plants seeking an affordable entry point into concrete block production. Designed by Dongyue Machinery with over 30 years of manufacturing expertise, the QT4-24 balances low capital investment with reliable, high-yield output — making it one of the most popular starter machines in emerging markets across Africa, Southeast Asia, and South Asia.

At the heart of the QT4-24 is a dual-motor vibration system — two 5.5 kW bottom vibration motors paired with a 3 kW top mold vibration motor — generating 35.5 kN of excitation force at 4,200 rpm. This table-mold synchronous vibration technology ensures that concrete is fully liquefied and compacted within seconds, producing blocks with uniform density, precise dimensions, and compressive strength suitable for load-bearing walls.

Unlike fully manual machines that demand heavy physical labor, the QT4-24 features electric mold sliding and automatic material feeding, completing the material distribution cycle in a single pass. This semi-automatic design reduces the crew to just 5 workers — one for the mixer, one for the main machine, one for material loading, and two for brick collection — significantly lowering ongoing labor costs while keeping the initial investment within reach of first-time buyers.

With a total power consumption of just 10.58 kW, the QT4-24 is particularly well-suited for regions where electrical infrastructure is limited or expensive. The machine's compact footprint (3,500 × 1,350 × 2,650 mm) and modest weight (2.95 tons) mean it can be installed in existing structures without major civil engineering work, further reducing the total project cost.