Roll Shaft: Load Capacity 5-200 kN, Diameter 50-300 mm

Component Specifications

Definition

A critical rotating component in press roll assemblies that provides structural support, transmits torque from drive systems, and maintains precise alignment under compressive loads. Engineered to withstand bending moments, torsional stresses, and surface wear while maintaining dimensional stability during continuous operation.

Working Principle

Converts rotational input from motors or gearboxes into controlled linear pressure through the press roll. The shaft's rigidity prevents deflection under load while its surface finish minimizes friction with bearings and seals. Precision machining ensures concentric rotation and proper load distribution across the roll surface.

Materials

Alloy steel (AISI 4140/4340), case-hardened steel (16MnCr5), or stainless steel (AISI 420) with surface hardness 45-60 HRC. Optional chrome plating or nitriding for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	500-3000 mm
Max RPM	500-1500
Diameter	50-300 mm
Load Capacity	5-200 kN
Surface Finish	Ra 0.4-1.6 μm
Straightness Tolerance	≤0.05 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

Press Roll

A cylindrical component that applies pressure to materials during industrial processing operations.

View Product Details

Lower Roll Bank

The lower set of rolls in a straightener/leveler machine that provides the foundational support and pressure for material flattening operations.

View Product Details

Engineering Analysis

Risks & Mitigation

Fatigue fracture
Bearing seizure
Shaft bending
Surface scoring
Corrosion pitting

FMEA Triads

Trigger: Improper bearing installation
Failure: Shaft scoring and premature wear
Mitigation: Use precision alignment tools and follow torque specifications during assembly

Trigger: Overloading beyond rated capacity
Failure: Plastic deformation or fracture
Mitigation: Install load monitoring systems and implement operational limits

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

IT6-IT7 per ISO 286, concentricity within 0.02 mm TIR

Test Method

Ultrasonic testing for internal defects, magnetic particle inspection for surface cracks, coordinate measuring machine for dimensional verification

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 Roll Shaft

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Shenyang SHSCNC Precision Manufacturing Co., Ltd.

Shenyang, Liaoning, CN

Founded 202190+ staff30,000 m²

ISO 9001 CE

Also makes: Spindle, Drive Shaft, Gear Housing and 6 more

Managed by the manufacturer
Listed on the company's own website

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Main Frame

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Frequently Asked Questions

What causes premature roll shaft failure?

Common causes include improper bearing alignment, excessive radial loads beyond design limits, corrosion from inadequate sealing, fatigue from cyclic loading, and material defects in heat treatment.

How often should roll shafts be inspected?

Visual inspections monthly, dimensional checks quarterly, and full NDT testing annually. Frequency increases with operating hours and load conditions.

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.

Roll Shaft