INDUSTRY COMPONENT

Inner Ring

Precision-machined inner ring for industrial-grade ladle turret bearings, engineered for high-load rotational support in steelmaking equipment.

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Component Specifications

Definition
The inner ring is a critical rotating component of a ladle turret bearing assembly, designed to interface directly with the rotating shaft of steelmaking ladle turrets. It provides a hardened, precision-ground raceway for rolling elements (typically cylindrical rollers) while withstanding extreme radial loads, thermal cycling, and intermittent shock loads during ladle rotation and pouring operations in continuous casting and steel production facilities.
Working Principle
Functions as the rotating raceway within a bearing assembly, transmitting rotational motion and load from the turret shaft to the rolling elements. Its precisely machined geometry ensures smooth rolling contact, minimizes friction, and maintains alignment under combined radial and axial forces during ladle handling operations.
Materials
Through-hardened bearing steel (e.g., AISI 52100/100Cr6, DIN 1.3505) or case-hardened steel (e.g., AISI 8620/20MnCr5) with surface hardness of 58-62 HRC. Optional coatings include black oxide or phosphate for corrosion resistance in high-temperature, humid environments.
Technical Parameters
  • Width (B) 50-200 mm depending on load capacity
  • Runout Tolerance ≤ 0.02 mm
  • Inner Diameter (d) Customized to shaft size (typically 500-2000 mm)
  • Outer Diameter (D) Determined by bearing design
  • Dimensional Tolerance IT5/IT6 per ISO 286
  • Operating Temperature -20°C to +200°C
  • Raceway Roughness (Ra) ≤ 0.2 μm
  • Load Capacity (Dynamic) 5000-50000 kN
Standards
ISO 15, ISO 1132-2, DIN 620, DIN 5412

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Inner Ring.

ladle turret bearing inner ring steelmaking bearing components high-load bearing rings industrial bearing parts bearing raceway continuous casting equipment Inner Ring Inner Ring in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Industrial-Grade Ladle Turret Bearing

Heavy-duty bearing assembly for steel ladle turret rotation in continuous casting.

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Precision Bearings

High-accuracy rolling elements designed to support radial and axial loads with minimal friction in rotating machinery.

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Bearing Set

A pre-assembled collection of bearing components designed to support rotating shafts and reduce friction within machinery.

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Engineering Analysis

Risks & Mitigation
  • Raceway spalling due to fatigue overload
  • Thermal cracking from rapid temperature cycles
  • Corrosion pitting in humid environments
  • Geometric deformation under extreme loads
  • Improper fit causing fretting corrosion
FMEA Triads
Trigger: Insufficient hardness or material defects
Failure: Raceway spalling and premature wear
Mitigation: Implement material certification (e.g., EN 10204 3.1), hardness testing, and ultrasonic inspection
Trigger: Improper interference fit with shaft
Failure: Cracking during mounting or rotational slippage
Mitigation: Precise dimensional control, hydraulic mounting procedures, and fit verification
Trigger: Thermal stress from ladle heat radiation
Failure: Micro-cracking and reduced fatigue life
Mitigation: Thermal barrier design, controlled cooling rates, and high-temperature material selection

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286 IT5/IT6, runout ≤ 0.02 mm
Test Method
CMM measurement, surface roughness testing, ultrasonic flaw detection, hardness testing (Rockwell C), dimensional verification with precision gauges

Buyer Feedback

★★★★☆ 4.7 / 5.0 (36 reviews)

"Found 46+ suppliers for Inner Ring on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Inner Ring is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Inner Ring so far."

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Frequently Asked Questions

What is the primary function of the inner ring in a ladle turret bearing?

It serves as the rotating raceway that directly mounts on the turret shaft, transmitting rotational forces and supporting extreme radial loads during ladle handling operations in steel production.

Why are specific material grades like AISI 52100 used for inner rings?

These through-hardened bearing steels provide optimal combination of hardness, wear resistance, and fatigue strength required for withstanding continuous high-load cycles and thermal stresses in steelmaking environments.

How does inner ring precision affect ladle turret performance?

Precision grinding of raceway geometry (IT5/IT6 tolerance) ensures smooth rolling contact, minimizes vibration, prevents premature wear, and maintains accurate ladle positioning during pouring operations.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Inner Rail Inner Support Core