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Lead Screw Nut Selection

Lead Screw Nut Selection   
Kerk Lead Screw Assemblies are modified acme thread forms optimized for performance and available in a broad range of lead screw diameters, leads and nut styles, custom designed for your application. Kerk lead screws are self-adjusting, maintenance-free and require no lubrication. Providing maximum accuracy, high reliability, smooth, quiet operation and low cost, Kerk lead screw assemblies are your best choice for high performance linear motion control. 
 
Watch video Tribology and Material Selection for Polymer Lead Screw Nuts, and Lubrication Options

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Nut Feature Nut Style
• = Good  •• = Better  ••• = Best
Units  ZBX ZBA ZBM KHD WDG NTB VHD BFW
Max Dynamic Load  lb
35 55 1 20 75 200 350 500
N
155 245 4.4 89 333 890 1557 2224
Compactness   •• •• ••• •• ••• •• •••
Typical Drag Torque   •• •• •• ••• •• •• ••• N/A
Vibration Damping horizontal ••• ••• ••• •• •• N/A
vertical ••• ••• ••• N/A
Smoothness   •• ••• •• •• •• •• ••
Backlash
Compensation
  •• •• ••• ••• ••• ••• N/A
Drag Adjusted   N/A ••• N/A •• N/A •• N/A
Stiffness   •• •• •• ••• ••• ••• ••• N/A
Easy to Modify   •• ••• •••
Custom Material   •• •• ••• •••
Best for Fine Leads <.2",5mm ••• ••• ••• ••• ••• ••• •••
Best for Long Leads >1",25mm ••• ••• N/A ••• ••• ••• ••• •••
Patented Noise Reduction
Centralizer
Option Available*
            Yes     Yes  

*Haydon Kerk’s Noise Reduction Centralizer is a patented technology that provides ultra-quiet performance for applications requiring virtually no audible noise.