The ZKLF40115-2Z bearing is a thrust angular contact ball bearing, also commonly known as a screw support bearing, and is widely used in high-precision, heavy-load industrial equipment. Basic Parameters Inner Diameter (d): 40 mm (Tolerance: -0.005 mm) Outer Diameter (D): 115 mm (Tolerance: -0.01 mm) Thickness (B): 46 mm (Tolerance: -0.25 mm) Structural Features: Bidirectional design (capable of withstanding bidirectional axial loads) Screw mounting (using 12 M8 fixing screws, conforming to DIN 912-10.9 standard) Double-sided gap seal ("2Z" indicates double-sided metal dust cover) Includes 3 mm pull-out groove for easy installation and removal Performance Parameters Basic rated dynamic load (Ca): 72,000 N Basic rated static load (Coa): 149,000 N Grease-lubricated limiting speed: 3,100 min⁻¹ (Some data incorrectly lists it as 13,100, but the technical document should be followed as 3,100) Frictional torque: 0.65 N·m Axial stiffness: 1,200 N/μm Overturning stiffness: 750 N·m/mrad Axial runout: ≤2.5 μm Mass: Approx. 2.2 kg Moment of inertia: 25.5 kg·cm² Installation and Matching Requires use with INA locknuts. Recommended models: ZMA40/62 AM40 Locking torque: 110 N·m Axial preload: 25,815 N Model Description
ZKLF40115-2Z is the older/basic model.
ZKLF40115-2Z3 is the newer/detailed model, providing more complete technical specifications and supporting information. Typical Applications: Machine tools (especially CNC machine tool lead screw supports), transmission devices, construction machinery, vibrating screens, metallurgical, mining, petroleum, and power equipment, and heavy-duty, high-precision applications such as fans, railways, and automobile manufacturing.
