Root: Torque Capacity 500-5000 Nm, Diameter 25-150 mm

Component Specifications

Definition

The Root is a critical rotating shaft component within metering sections of industrial machinery, designed to provide precise rotational control for measurement and dispensing operations. It serves as the central axis that drives metering mechanisms, ensuring accurate volumetric or mass-based material flow control through calibrated rotations. This component typically features high-precision bearing surfaces, torque transmission interfaces, and mounting provisions for measurement elements.

Working Principle

The Root operates on rotational mechanics principles, converting input torque into controlled rotational motion that drives measurement mechanisms. It maintains precise angular positioning through bearing systems and transmits rotational force to connected metering elements while minimizing deflection and vibration. The shaft's rotational accuracy directly determines measurement precision through calibrated displacement per revolution.

Materials

Typically manufactured from case-hardened alloy steels (AISI 4140, 4340) or stainless steels (316, 17-4PH) with surface hardness of 58-62 HRC. Precision ground surfaces with Ra 0.4-0.8 μm finish. Corrosion-resistant coatings or platings applied for specific applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	300-2000 mm
Diameter	25-150 mm
Torque Capacity	500-5000 Nm
Runout Tolerance	0.005-0.02 mm
Surface Hardness	58-62 HRC
Straightness Tolerance	0.01 mm/m

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

Standards

ISO 286-2, DIN 748, ISO 1101

Parent Products

This component is used in the following industrial products

Metering Section

The final section of an extrusion screw where molten material is precisely metered and pumped at constant pressure through the die.

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Rack

A linear gear component with teeth cut along its length that meshes with a pinion gear to convert rotational motion into linear motion.

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Engineering Analysis

Risks & Mitigation

Shaft deflection under load
Bearing wear leading to increased runout
Material fatigue from cyclic loading
Corrosion in harsh environments
Thermal expansion affecting dimensional stability

FMEA Triads

Trigger: Inadequate lubrication
Failure: Increased friction and wear leading to shaft scoring and bearing failure
Mitigation: Implement automated lubrication systems with monitoring and regular maintenance schedules

Trigger: Excessive radial loads
Failure: Shaft deflection causing measurement inaccuracies and premature bearing failure
Mitigation: Design with proper load calculations, use stiffer materials, and implement load monitoring systems

Trigger: Corrosive environment exposure
Failure: Surface degradation leading to dimensional changes and measurement errors
Mitigation: Apply appropriate corrosion-resistant coatings and implement environmental controls

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-2, surface finish requirements per ISO 1302

Test Method

Coordinate measuring machine (CMM) inspection, surface roughness testing, hardness testing, runout measurement with dial indicators, torque testing with calibrated equipment

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Root

Manufacturer profiles associated with Root.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of the Root in metering sections?

The Root serves as the central rotating shaft that provides precise rotational control for measurement and dispensing operations, ensuring accurate material flow through calibrated rotations.

What materials are commonly used for manufacturing Root components?

Typically case-hardened alloy steels like AISI 4140 or 4340, or stainless steels such as 316 or 17-4PH, with surface hardness of 58-62 HRC and precision ground finishes.

How does the Root component affect measurement accuracy?

The shaft's rotational precision, straightness, and runout tolerances directly determine measurement accuracy, as any deviation translates to volumetric or mass measurement errors in the metering system.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Root