Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Roller Core/Sleeve Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A roller core/sleeve is a precision-engineered cylindrical component that forms the central structural element of drive roller assemblies in industrial machinery. It consists of an inner core (typically solid or hollow) and an outer sleeve that interfaces with conveyed materials. This component transmits rotational force from the drive mechanism while maintaining dimensional stability under load, temperature variations, and wear conditions. Critical for maintaining proper alignment, tension control, and surface contact in conveyor systems, printing presses, textile machinery, and packaging equipment.

Working Principle

The roller core provides structural rigidity and mounting points for bearings/shafts, while the sleeve creates the functional surface that contacts materials. Rotational force from motors is transferred through the core to the sleeve surface, creating friction or positive engagement with conveyed items. The interface between core and sleeve may use mechanical fastening, thermal shrinking, or adhesive bonding to ensure torque transmission without slippage.

Materials

Core: Carbon steel (AISI 1045/4140), stainless steel (304/316), aluminum alloy (6061-T6). Sleeve: Polyurethane (80-95A hardness), rubber (EPDM/Nitrile), ceramic-coated steel, chrome-plated steel, engineered polymers (UHMW-PE, acetal).

Technical Parameters

Max RPM 100-800
Length Range 200-3000 mm
Load Capacity 500-5000 N
Diameter Range 50-500 mm
Surface Finish Ra 0.4-3.2 μm
Wall Thickness 5-25 mm
Runout Tolerance ±0.05-0.2 mm
Operating Temperature -20°C to 120°C

Standards

ISO 286-2, DIN 1544, ISO 21940, DIN 55189

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Roller Core/Sleeve.

Parent Products

This component is used in the following industrial products

Drive Roller Assembly

A mechanical assembly that provides the driving force to advance packaging material through a dispenser system.

View Product Details

Engineering Analysis

Risks & Mitigation

Sleeve wear leading to diameter reduction
Core bending under overload
Bond failure between core and sleeve
Surface contamination affecting friction
Corrosion in humid environments
Thermal expansion mismatch

FMEA Triads

Trigger: Abrasive material contact
Failure: Progressive sleeve wear reducing diameter
Mitigation: Use wear-resistant sleeve materials, implement regular diameter measurements, establish preventive replacement schedules

Trigger: Impact loading from jammed materials
Failure: Core bending or sleeve cracking
Mitigation: Install overload protection devices, use impact-resistant materials, implement proper machine guarding

Trigger: Improper installation or alignment
Failure: Uneven wear, vibration, premature bearing failure
Mitigation: Follow precise installation procedures, use alignment tools, implement regular maintenance checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Diameter: IT7-IT9, Straightness: 0.1 mm/m, Concentricity: 0.05-0.15 mm TIR

Test Method

Dimensional verification with micrometers and CMM, runout testing with dial indicators, hardness testing (Shore A/D), load testing with hydraulic press, NDT for internal defects

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.

Related Components

Machine Frame

The rigid structural foundation of a CNC wood router that provides stability, vibration damping, and precision alignment for cutting operations.

pH Sensor Assembly

Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications

Load Cell Assembly

Precision load cell assembly for automated powder dispensing systems

Dust Collection Port

A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.

Frequently Asked Questions

What is the difference between roller core and sleeve?

The core is the structural backbone providing strength and mounting, while the sleeve is the replaceable outer layer that contacts materials and experiences wear.

How often should roller sleeves be replaced?

Replacement intervals depend on material abrasiveness, load, and speed. Typical industrial applications require sleeve replacement every 6-24 months with regular inspection.

Can roller cores be reused with new sleeves?

Yes, most designs allow sleeve replacement while retaining the core, provided the core surface remains within dimensional tolerances and free of damage.

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.

Roller Core/Sleeve