INDUSTRY COMPONENT

Shaft Body

Shaft body is the main cylindrical structural component of a drive shaft that transmits rotational power and torque between machine elements.

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Component Specifications

Definition
The shaft body is the central cylindrical element of a drive shaft assembly, designed to transmit mechanical power and torque from a driving component (such as a motor or engine) to a driven component (such as a gear, pulley, or wheel). It serves as the primary load-bearing structure that withstands torsional, bending, and axial forces while maintaining precise alignment and rotational stability. Typically manufactured with high dimensional accuracy and surface finish requirements to ensure proper fit with bearings, couplings, and other mounted components.
Working Principle
The shaft body operates on the principle of torque transmission through rotational motion. When torque is applied at one end, the shaft's rigid cylindrical structure transfers this rotational force along its length to the output end. Its design minimizes deflection and vibration while maintaining alignment between connected components. The shaft's geometry (diameter, length, keyways, splines) determines its torque capacity, critical speed, and compatibility with other mechanical elements.
Materials
Common materials include: Carbon steels (AISI 1045, 4140), Alloy steels (AISI 4340, 8620), Stainless steels (304, 316), Aluminum alloys (6061-T6, 7075-T6), Titanium alloys (Grade 5). Material selection depends on application requirements for strength, hardness, corrosion resistance, weight, and cost.
Technical Parameters
  • Hardness HRC 20-55 depending on material
  • Length Range 50 mm to 3000 mm standard
  • Straightness 0.05 mm/m maximum
  • Torque Capacity 50 Nm to 5000 Nm typical
  • Surface Roughness Ra 0.4 μm to Ra 1.6 μm
  • Diameter Tolerance ±0.01 mm to ±0.05 mm
Standards
ISO 286-1, ISO 1101, DIN 748, DIN 7190

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Shaft Body.

drive shaft body transmission shaft power shaft industrial shaft torque transmission component shaft specifications shaft manufacturing Shaft Body Shaft Body in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Drive Shaft

A rotating mechanical component that transmits torque and rotation from a power source to a driven element within the Top Roll assembly.

View Product Details

Drive Shaft / Actuator

A mechanical component that transmits rotational motion and force within a tool change arm system.

View Product Details

Lead Screw

A threaded rod that converts rotational motion into linear motion within a linear actuator assembly.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Fatigue failure from cyclic loading
  • Torsional vibration resonance
  • Bearing seat wear
  • Corrosion in harsh environments
  • Improper alignment causing premature failure
FMEA Triads
Trigger: Insufficient material strength for applied torque
Failure: Torsional shear failure
Mitigation: Proper material selection and torque capacity calculation with safety factors
Trigger: Improper heat treatment
Failure: Surface cracking or reduced fatigue life
Mitigation: Controlled heat treatment processes and hardness testing
Trigger: Inadequate surface finish at bearing seats
Failure: Premature bearing wear and vibration
Mitigation: Specify appropriate surface roughness and implement quality control checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-1
Test Method
Dimensional inspection with CMM, surface roughness testing, hardness testing (Rockwell/Brinell), non-destructive testing (magnetic particle or ultrasonic)

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a shaft body and a complete drive shaft assembly?

The shaft body is specifically the cylindrical structural element, while a complete drive shaft assembly includes additional components like couplings, universal joints, bearings, and mounting features attached to the shaft body.

How do I select the appropriate material for a shaft body?

Material selection depends on application requirements: Carbon steel for general purpose, alloy steel for high strength, stainless for corrosion resistance, aluminum for weight reduction, and titanium for high strength-to-weight ratio applications.

What are the most critical dimensional tolerances for shaft bodies?

Diameter tolerance (for bearing fits), straightness (for rotational balance), and surface finish (for sealing and wear characteristics) are typically the most critical dimensional requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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