Putzmeister Schwing Junjin KCP Slewing Lever Swing of S Valve Construction Machinery Parts for Concrete Trucks
Putzmeister's DN80/DN90 rocker arm is the key "drive joint" connecting the main oil cylinder and the S valve, and its core selling point is precision, robustness and durability. Manufactured using high-quality alloy steel (such as 42CrMo) by a die-forging process, rather than simply casting or welding The key connection hole (the part connected to the cylinder earrings, S valve swing arm) uses high precision CNC machining, tolerance control is extremely strict Surface hardening, wear-resistant, pin shaft hole parts are usually treated with high-frequency quenching or hard chrome plating Designed for pump trucks with Putzmeister DN80 or DN90 pipe diameters (e.g. common arm pump trucks from 32 m to 56 m)
Changsha Concrete Ming Machinery Co., Ltd. specializes in construction machinery parts, offering original and OEM components for brands like Sany and Zoomlion. Based in Changsha, China, it serves 20+ countries with over 30 employees, providing technical solutions and after-sales services. Quality is ensured through pre-production samples and final inspections, with a focus on durable, compatible spare parts for concrete pumps and excavators.
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