THK BLK2525-7.2ZZ1124LT Rolled Ball Screw Assembly

THK BLK2525-7.2ZZ1124LT Rolled Ball Screw Assembly delivers precise, high-speed linear motion by converting rotary motion to linear displacement with a 25 mm screw shaft diameter and a 25 mm lead, packaged in a 1,124 mm overall length. The BLK (Large Lead) series unit uses a four-row, 1.8-turn ball circulation design that enables high-speed travel with a DN value of 70,000, and the ZZ designation indicates double-end seals to retain lubricant and protect against contaminants. This assembly uses a single ball nut and offers dynamic load rating up to 21.9 kN and static load rating up to 69.9 kN, with axial rigidity of 520 N/μm. Lubrication is grease (AFB-LF standard) or oil-compatible, with an oil hole port, and the shaft is manufactured by rolling from hardened alloy steel; it supports right-hand or left-hand thread depending on configuration and operates from −15°C to +80°C. Commonly used in factory automation equipment, packaging machinery, transfer systems, material handling equipment, and industrial positioning applications, it serves maintenance teams and system integrators for repair, retrofit, expansion, and replacement.