See the reference section for details … K values: waxed (e.g. pressure wax as supplied on high strength nuts) = .10, hot dip galvanized = .25, … Thread Stress Area Calculator and Equation Bolt Threads, Grade, Bolt Strength, Excel Spreadsheet Calculator… Store. m. The torque calculator can also work in reverse, finding the force or lever arm if torque is given. A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. T = (215 N) (0.5 m) = 107 Nm. INSTRUCTIONS: Choose units and enter the following: Leadscrew Square Thread (d m) This is the mean thread diameter (d c) This is the mean collar diameter (l) This is the lead (F) This is the load Axial Load (N) Lead (mm) Preload Reset Calculate. On a 3/4" diameter screw, 20 threads per inch is considered extra-fine: 3/4-20 UNEF. Contact. Support. load (lb) pitch - distance or lead of thread in one turn (in) lever arm (in) Screw Jack Calculator - without Friction - … We measure torque by multiplying two factors—amount of force … The Lifting Torque for a Leadscrew calculator computes the torque required to lift a load with a square thread power screw assembly. Service. Calculate Ball Screw (PMBS) Torque The Amount of Torque Needed to Drive a Load with and with out Preload. Store Service Applications Support search Search Contact Local Rep. Get in touch. Applications. Bolt Torque Calculator. Acceleration Torque † - Objects in Rotary Motion `T_a = (WK^2DeltaRPM)/(307t)` View Calculator `T_a` = Torque to accelerate (ft.-lbs.) Once the clamp load is determined, finding the correct torque value for a bolt is one simple calculation away. The thread series is generally relative to the outside diameter of the screw. T = K x D x P. Where: Screw Jack Calculator - without Friction - Imperial Units. D = diameter of screw (ft.)) `DeltaRPM` = Change in rotational speed (rpm) menu. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. Values calculated using industry accepted formula T = KDP where T = Torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load, lb. `WK^2` = Rotational inertia of object (lbs.-`ft.^2`) (for solid screw shaft, use `WK^2` = 1/8`WD^2` where W = weight of screw (lbs.) The Bolt Torque & Preload calculator can be used to calculate the torque required to achieve the desired preload on a bolted joint. ... K Factor is a torque coefficient between bolt and receptacle. 20 threads per inch on a 1/4" diameter screw is considered coarse: 1/4-20 UNC. 4950 East 49th Street, Cleveland, Ohio 44125. Linear Force Calculate how much linear force a lead screw or ball screw can produce given the torque of a motor, the lead or ball screw efficiency, and pitch. The following design resources are for design screws and bolts for the proper torque, stress, strain, preload and other engineering critical design parameters. Torque is twisting force that tends to cause rotation. Torque Conversion Calculator. The proof load itself is usually 85% to 95% of a bolt’s yield strength, but the clamp load is significant because it is what ultimately provides the clamping pressure. If you want to learn more about the concept of force and Newton's second law, try the acceleration calculator. The torque acting on the screw can be calculated. Calculate torque and effort force acting on the lever arm. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. Ball Screw Home Page. Calculate how much linear force a lead screw or ball screw can produce given the torque of a motor, the lead or ball screw efficiency, and pitch. 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