INDUSTRY COMPONENT

Main Roller Shaft

Main roller shaft is the central rotating component in industrial dough sheeter roller assemblies that transfers torque and supports compression forces during dough flattening operations.

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Component Specifications

Definition
The main roller shaft is a precision-engineered cylindrical component that serves as the structural backbone of industrial dough sheeter roller assemblies. It transmits rotational power from the drive system to the compression rollers while maintaining precise alignment under significant mechanical loads. This shaft must withstand continuous torsional stress, radial compression forces up to 15 kN, and maintain dimensional stability within ±0.02mm tolerance during high-volume production cycles. Its design incorporates keyways, bearing journals, and mounting surfaces specifically engineered for food-grade applications with frequent sanitation requirements.
Working Principle
The main roller shaft operates on rotational mechanics principles, converting motor torque into controlled roller compression. As the central power transmission element, it maintains constant angular velocity while supporting variable radial loads from dough thickness variations. The shaft's rigidity prevents deflection that could cause uneven dough thickness, while its surface finish minimizes friction at bearing interfaces. Precision-ground journals ensure smooth rotation at speeds up to 120 RPM with vibration levels below 0.5 mm/s RMS.
Materials
Stainless Steel AISI 316L (Food Grade), Hardness: 35-40 HRC, Surface Finish: Ra 0.4μm, Corrosion Resistance: ASTM A967 Passivated, Magnetic Permeability: <1.05
Technical Parameters
ParameterTypical rangeNotes & selection driver
Length1200mm
Weight42.5kg
Max RPM150
Diameter80mm
Max Torque850 Nm
Straightness0.02mm/m
Runout Tolerance0.015mm TIR
Surface Hardness35-40 HRC
Temperature Range-10°C to 150°C

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 22000, DIN 11850, FDA 21 CFR Part 177, EHEDG Certified

Parent Products

This component is used in the following industrial products

Industrial Dough Sheeter Roller Assembly

This roller assembly is a component for industrial dough sheeting machines used in the manufacture of bakery and farinaceous products.

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Engineering Analysis

Risks & Mitigation
  • Metal fatigue from cyclic loading
  • Corrosion from acidic dough ingredients
  • Bearing seizure due to inadequate lubrication
  • Shaft deflection causing uneven dough thickness
  • Contamination risk from material degradation
FMEA Triads
Trigger: Inadequate lubrication of bearing journals
Failure: Increased friction leading to overheating and seizure
Mitigation: Implement automated lubrication system with food-grade grease, install temperature sensors on bearing housings
Trigger: Corrosive attack from acidic dough components
Failure: Pitting corrosion reducing structural integrity
Mitigation: Use AISI 316L stainless steel with enhanced passivation, implement daily cleaning protocol with pH-neutral sanitizers
Trigger: Improper alignment during installation
Failure: Premature bearing wear and vibration transmission
Mitigation: Use laser alignment tools during installation, implement quarterly alignment verification procedures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.02mm diameter, ±0.015mm runout, ±0.5° angular alignment
Test Method
Laser micrometer measurement, dynamic balancing to G2.5 grade, salt spray testing per ASTM B117, material certification per EN 10204 3.1

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Main Roller Shaft

Manufacturer profiles associated with Main Roller Shaft.

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Frequently Asked Questions

What maintenance is required for main roller shafts in dough sheeters?

Monthly inspection for surface wear, quarterly bearing lubrication with food-grade grease, and annual alignment verification. Shafts should be cleaned daily with food-safe sanitizers and inspected for corrosion or scoring.

How often should main roller shafts be replaced in commercial bakeries?

With proper maintenance, shafts typically last 5-7 years in 24/7 operations. Replacement indicators include visible scoring deeper than 0.1mm, vibration exceeding 1.0 mm/s, or runout exceeding 0.03mm TIR.

Can main roller shafts be customized for different dough types?

Yes, shafts can be engineered with different diameters (60-120mm), surface finishes (Ra 0.2-0.8μm), and hardness levels (30-45 HRC) to optimize performance for specific dough viscosities and production speeds.

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.

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