Lead Screw / Rack Component - Specifications and Standards

Product Specifications

Technical details and manufacturing context for Lead Screw / Rack

Definition

A lead screw or rack is a critical component within depth adjustment mechanisms, providing controlled linear movement through either screw threads (lead screw) or gear teeth (rack) to achieve accurate positioning and depth control in various industrial applications. The lead screw converts rotational motion from a motor or handwheel into linear displacement via threaded engagement, while the rack works with a pinion gear to translate rotational motion into linear movement along its length. This component is available in steel, stainless steel, or brass, with nominal diameters ranging from 12 to 80 mm, leads from 2 to 20 mm, and lengths from 200 to 6000 mm. Tolerance grades IT3 to IT5 ensure positioning accuracy, and maximum linear speeds range from 0.5 to 2.0 m/s, with axial loads up to 5 to 50 kN. Operating temperatures span -20 to 80°C, and surface hardness can be 50 to 60 HRC when induction hardened. Materials such as C45E to 42CrMo4 are specified per EN 10083, and thread profiles follow DIN 103 for trapezoidal threads. Weight ranges from 1.5 to 120 kg/m. These parameters are reference ranges; actual values must be confirmed for the specific model and application. Standards like ISO 2901, ISO 286, and ISO 18265 serve as procurement references, not certifications. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The lead screw operates by converting rotational motion from a motor or handwheel into linear displacement through threaded engagement. As the screw rotates, the nut translates along its axis, providing precise linear movement. The rack, on the other hand, works with a pinion gear: rotation of the pinion drives the rack linearly along its length. Both mechanisms convert rotary input into controlled linear output, enabling accurate depth positioning. The lead determines linear speed per revolution, while the nominal diameter affects load capacity and stiffness. Tolerance grades influence positioning accuracy, and surface hardness impacts wear resistance. Proper lubrication and heat dissipation are essential to maintain performance within specified limits.

Common Materials

Steel, Stainless Steel, Brass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	12–80 mm	Determines load capacity and stiffnessISO 2901
Lead	2–20 mm	Affects linear speed per revolutionISO 2901
Length	200–6000 mm	Custom lengths available
Tolerance Grade	IT3–IT5	Higher precision for positioning accuracyISO 286
Max Linear Speed	0.5–2.0 m/s	Limited by lubrication and heat
Max Axial Load	5–50 kN	Depends on diameter and mounting
Operating Temperature	-20–80 °C	Above 80°C may require special lubrication
Material	C45E–42CrMo4	Alloy steel for higher strengthEN 10083
Surface Hardness	50–60 HRC	Induction hardened for wear resistanceISO 18265
Thread Profile	Tr 12–Tr 80	Trapezoidal thread standardDIN 103
Weight	1.5–120 kg/m	Per meter length

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Shaft/Body Part
Main structural element providing strength and rigidity

Material: steel
End Machining Part
Prepared ends for bearing mounting or coupling attachment

Material: steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Depth Adjustment Mechanism

View system integration details

Manufacturers of Lead Screw / Rack

Manufacturer profiles associated with Lead Screw / Rack.

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Frequently Asked Questions

What materials are available for lead screws and racks?

The directory lists steel, stainless steel, and brass as material options. Specific material grades, such as C45E to 42CrMo4, are referenced per EN 10083, but you must confirm the exact material with the supplier for your application.

What are the typical dimensions and performance ranges?

Nominal diameters range from 12 to 80 mm, leads from 2 to 20 mm, and lengths from 200 to 6000 mm. Maximum linear speed is 0.5 to 2.0 m/s, axial load 5 to 50 kN, and operating temperature -20 to 80°C. These are reference ranges; verify for the specific model.

Which standards apply to these components?

Standards referenced include ISO 2901 for thread dimensions, ISO 286 for tolerance grades, DIN 103 for trapezoidal thread profiles, and ISO 18265 for hardness conversion. These are procurement references, not certifications. Always confirm compliance with the manufacturer.

How do I select the right lead screw or rack?

Consider required load capacity, linear speed, positioning accuracy, and environmental conditions. Use the listed parameters as a starting point, but consult the manufacturer for application-specific engineering data and verification.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Axial load capacity: 500N to 50kN depending on size/material, consult manufacturer for specific ratings
other spec:	Maximum linear speed: 0.5-2 m/s, positioning accuracy: ±0.01mm to ±0.1mm, backlash: 0.05-0.2mm
temperature:	-40°C to 120°C (standard), up to 200°C with special materials/lubrication

Lead Screw / Rack

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards