Gravity Destoner Machine

Density-based separation for precision-grade seed and grain.

Specifications

Configuration details.

Capacity: 1–8 tons/hour (wheat basis)
Motor: 2 HP, 3-phase, 440V
Body Material: Mild steel
Dimensions (L×W×H): 5 × 5 × 6 ft
Weight: 700 kg
Warranty: 1 year

All specifications vary by configuration — ranges shown span our smallest to largest build for this model. Tell us your requirement and we'll spec the exact machine.

Gravity Destoner Machine labelled diagram

Overview

How it works

Some stones and impurities end up exactly the same size as good grain, which means a sieve alone can't tell them apart — only weight can. This machine stratifies material by density across an oscillating, air-fed deck, so heavier stones and lighter chaff both separate out even when nothing about their size gives them away.

Features

Built for reliable, everyday use.

Separates by density, not just size — catches same-size stones sieves miss

Adjustable deck tilt and airflow tune separation for different crops

Configurable from 1 to 8 tons per hour (wheat basis)

Sturdy frame built for continuous processing-line use

FAQs

Common questions.

How is this different from the standard Destoner Machine?

The standard destoner combines air, vibration, and screens; this one relies specifically on density stratification across an oscillating deck, which catches stones and impurities that are the same size as the grain — something screen-based separation alone can't do.

What crops is it best suited to?

Wheat, paddy, pulses, and seed crops where precise, density-based cleaning matters more than raw throughput.

Can the separation be tuned for different materials?

Yes — deck tilt and airflow are both adjustable, so the same machine can be set up differently for different crops and impurity types.

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