Nut Feature Matrix for Acme Lead Screw Assemblies

Haydon Kerk - Linear Actuators, Precision Leadscrews, and Linear Rails

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LEAD SCREW NUT FEATURE MATRIX

Haydon Kerk Motion Solutions^™ has a wide variety of standard acme nut designs which offer many features to choose from. Once an application’s most important requirements are understood, it becomes a matter of choosing the nut which best meets those requirements. Occasionally, more than one nut type on a particular lead screw might do the job, but in the vast majority of situations, one nut design will stand above the rest. The matrix below may help to narrow down the choices.

All Kerk^® anti-backlash and general purpose acme nuts can be modified to some degree to help them better meet specific requirements. Haydon Kerk Motion Solutions is also very willing to discuss custom nut designs where requirements and volumes justify.

LEAD SCREWS | COMPARISON CHART | SCREW SIZE LIST | NUT STYLES

Nut Feature	Nut Style • = Good •• = Better ••• = Best
	CMP	ZBX	ZBA	KHD	WDG	NTB	NTG	VHD	BFW
Compactness	•••	••	••	••	•••	••	•••	•	•••
Dynamic Load Capability	••	•	••	••	••	••	••	•••	•••
Minimal Drag Torque	•	••	••	•••	••	••	••	•••	N/A
Vibration Damping (horizontal)	•	•••	•••	••	•	•	••	••	N/A
Vibration Damping (vertical)	•	•••	•••	•	•	•	•	•	N/A
Smoothness of Operation (printing, scanning)	•	••	•••	••	••	••	•••	••	•
Backlash/Wear Compensation Capability	•••	••	•	•••	•••	•••	•	•••	N/A
Ease of User Adjustment of Drag Torque/Backlash	N/A	N/A	•••	••	N/A	•	•••	••	N/A
Stiffness (less axial bi-directional compliance)	••	••	••	•••	•••	•••	••	•••	N/A
Ability to Add Modifications	•	••	•	•	•	•••	•	•	•••
Ability to Manufacture with Custom Material	•	••	••	•	•	•••	••	•	•••
Ability to Work with Finer Leads (<0.2-in)	•••	•••	•••	•••	•••	••	•••	•••	•••
Ability to Work with Long Leads (>1-in)	•••	•••	•••	•••	•••	•••	•	•••	•••