Eccentric Shaft Assembly for Vibrating Feeders | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Eccentric Shaft Assembly

Definition

The eccentric shaft assembly is a critical component of a Vibrating Grizzly Feeder that converts rotational motion into linear vibratory motion. It consists of an eccentric shaft with offset weights or lobes, bearings, and mounting components that create controlled vibration for material separation and feeding. The assembly is designed to operate within specified parameters, including shaft diameter of 40–120 mm, overall length of 300–2000 mm, eccentricity of 2–15 mm, and rated speed of 500–1500 r/min. Dynamic balance grade per ISO 1940-1 is G6.3–G2.5, and surface roughness is Ra 0.8–1.6 µm. Hardness is induction hardened to 40–50 HRC. Materials are alloy steel (grades 45#–40Cr per GB/T 699 and GB/T 3077) and bearing steel. Operating temperature range is -20 to 80 °C, and weight ranges from 50 to 500 kg. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The assembly is used in vibrating feeders and screens to achieve efficient material separation and feeding. Proper selection requires consideration of load capacity, bearing compatibility, machine frame dimensions, and desired vibration amplitude. Verification questions include confirming the exact shaft diameter, length, eccentricity, and balance grade for the intended duty. Maintenance signals include increased vibration noise, bearing temperature rise, or visible wear on the shaft. Failure boundaries include operating beyond the rated speed or temperature range, which can degrade lubricant and seals. Always consult the manufacturer for model-specific data and compliance with relevant standards.

Working Principle

When the eccentric shaft rotates, the offset mass creates an unbalanced force that generates linear vibration. This vibration is transmitted through the feeder structure to move and separate materials based on size and density. The amplitude of vibration is determined by the eccentricity, and the frequency by the rotational speed. The dynamic balance grade ensures smooth operation within specified limits. Proper lubrication and bearing selection are critical to maintain performance and prevent premature failure.

Common Materials

Alloy Steel, Bearing Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Shaft Diameter	40–120 mm	Determines load capacity and compatibility with bearings
Overall Length	300–2000 mm	Must match machine frame dimensions
Eccentricity	2–15 mm	Determines vibration amplitude
Rated Speed	500–1500 r/min	Operating range for optimal screening efficiency
Dynamic Balance Grade	G6.3–G2.5	Higher grade reduces vibration and noiseISO 1940-1
Surface Roughness	Ra 0.8–1.6 µm	Affects seal life and bearing fit
Hardness	40–50 HRC	Induction hardened for wear resistance
Material Grade	45#–40Cr	Alloy steel for high strength and toughnessGB/T 699, GB/T 3077
Operating Temperature	-20–80 °C	Beyond this range, lubricant and seals degrade
Weight	50–500 kg	Affects handling and installation

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Eccentric Shaft
Main rotating component with offset mass to generate vibration

Material: Alloy Steel
Eccentric Weights Part
Adjustable or fixed weights that create unbalanced force

Material: Steel
Bearing Housings
Support and contain bearings for smooth rotation

Material: Cast Iron or Steel
Spherical Roller Bearings
Allow rotation while accommodating misalignment and heavy loads

Material: Bearing Steel
Shaft Seals Part
Prevent contamination and retain lubrication

Material: Rubber or Polymer

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Eccentric Shaft Assembly.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Vibrating Grizzly Feeder

View system integration details

Manufacturers of Eccentric Shaft Assembly

Manufacturer profiles associated with Eccentric Shaft Assembly.

Sourcing Eccentric Shaft Assembly from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

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

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.

Frequently Asked Questions

What is the typical application of an eccentric shaft assembly?

It is used in vibrating grizzly feeders and screens to generate linear vibratory motion for material separation and feeding. The assembly converts rotational motion into controlled vibration.

What are the key parameters to verify before selecting an eccentric shaft assembly?

Key parameters include shaft diameter, overall length, eccentricity, rated speed, dynamic balance grade, surface roughness, hardness, material grade, operating temperature, and weight. These must match the machine frame and application requirements.

How does the dynamic balance grade affect performance?

A higher balance grade (e.g., G2.5) reduces vibration and noise compared to a lower grade (e.g., G6.3). It ensures smoother operation and longer bearing life.

What maintenance signals indicate a problem with the assembly?

Increased vibration noise, elevated bearing temperature, or visible wear on the shaft are signs of potential issues. Regular inspection and lubrication are recommended.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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.

Buyer enquiry

Request manufacturing insight for Eccentric Shaft Assembly

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Not applicable (mechanical assembly)
other spec:	Max vibration amplitude: 15mm, Max operating frequency: 25Hz, Max slurry concentration: 60% solids by weight
temperature:	-20°C to 120°C

Eccentric Shaft Assembly

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards