Module linéaire AGORA Technique

Standard positioning ball screws This type of ball screws is most widely spread in practice thanks to their universal use, excellent technical parameters and wide product range. They have been produced mainly by the technologies of grinding, whirling or a combination of both. For this type of ball screws the following nut types are available: Single and double nuts With backlash or preloaded With internal or external ball recirculation system With or without flange Characteristics: Precise positioning ball screws Wide range of sizes and pitches Standard geometric and working accuracy, service life and load capacities according to DIN ISO 3408 Delivered with customized preload Technical parameters: Diameters from 12 to 125 mm Pitch from 3 to 50 mm, lengths up to 6,2 m Accuracy classes from IT1 to IT5 Do × n = 100,000 efficiency 94–97 % (according to the thread pitch and lubricant) Shaft material minimum strength Rm = 650 MPa, functional surfaces of the shaft and nut hardened to 58-60HRC Application temperatures -40 to +80 °C (according to lubricant type) Applications: Machine tools Positioning mechanisms Automotive and aerospace industries Example of designation: K80×20 – 4+4/AP+A ST/3 (ball screw with diameter 80 mm, 20 mm right hand pitch, 4 working threads, double preloaded nut type AP+A, with flange type 3) Standard positioning ball screws : www.ks-kurim.cz/en/ball-screws/standard-positioning-ball-screws/

High-load ball screws Compared to standard ball screws, high-load (HL) ball screws are characterized by more than twice higher load capacity and rigidity, achieved by changed radius of the thread profile. In the case of long ball screw shafts, this profile can be ground just in the nut. Short ones (up to three times the length of the nut) always have this profile also on the shaft. High load ball screws have lower efficiency and are designed for slow-running applications. The HL ball screws are usually produced as non-preloaded (single nuts with backlash). In all applications, it is necessary to perform shaft buckling analysis and the nuts must be checked for their flange width in relation to axial load. Characteristics: Precise ball screws for high axial load and long life Thread accuracy of the ball screws complies with the IT1 precision class (DIN 69051) with inter-thread deviation less than 2 μm Shaft ends are ground in the tolerance classes 4 to 6Technical parameters: Recommended shaft diameters are 63, 80, 100 and 125 mm Recommended pitch 20 mm Used material with minimum strength Rm=720MPa Ball screws, surface-induction hardened to 58-60HRC Ball nuts are designed for high loadsConditions for use of HL ball screws: Transmission efficiency approximately 0.93 – 0.95% Shaft buckling analysis is necessary Lubricants for high loads must be used. Recommended lubricants are: Klüber Microlube GL 261, OKS 400, Optimol Longtime PD 2, Lubcon Turmogrease PHS 1002 (all other greases suitable for high loads). Working temperature up to 90°CApplications: Injection moulding machines Transportation mechanisms Lifting equipment Replacement for hydraulic cylinders Example of designation: K80×20 – 4/AP HL/3 (ball screw with diameter 80 mm and pitch 20 mm, 4 working threads, single nut with flange, high-load design, flange type 3) High-load ball screws : www.ks-kurim.cz/en/ball-screws/high-load-ball-screws/

Repair and services The company KULIČKOVÉ ŠROUBY KUŘIM, a.s. provides repairs and overhaul of ball screws from its own production program and such produced by foreign ball screw producers. Those repairs are exclusively done in the company’s premises, where precise measurement and evaluation of the condition of the ball screws is being provided, thus offering an optimal solution for the customer. We offer also full-value replacement of the worn, unreparable ball screws, manufactured by any ball screw producer, with ball screws newly produced in our company. KSK offers: Overhaul an repairs of ball and trapezoidal screws manufactured by our company Overhaul an repairs of ball and trapezoidal screws manufactured by other producers Functionality renovation and preload setting, alternatively backlash reduction of the nut Full value replacement of worn screws with new ones, produced on basis of delivered sample Emergency repairs of ball and trapezoidal screws in short terms Repair and services : www.ks-kurim.cz/en/services/repair-and-services/