Batter & Breading · Step 1

SFJ Series Preduster Machine

The SFJ preduster embeds every piece in flour from above and below, then removes the excess, so batter and crumbs grip evenly in the next steps.

Belt widths 300 / 400 / 600 mm
Belt speed 3–15 m/min (VFD)
Adjustable top and bottom flour layers
Blower and vibrator remove excess flour

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Overview

Predusting is the first coating step in most coated food lines. The SFJ preduster carries the product on a bed of flour while a curtain of flour falls on top, so each piece is fully embedded and coated on every side.

A strong blower and a vibrator then remove loose flour before the product leaves the machine. The dry, evenly dusted surface gives the batter something to hold on to, which helps prevent bare spots and coating loss later in frying.

The SFJ preduster connects directly to Bokang batter applicators and breading machines, and to the forming machine in front of it, to build a continuous coating line.

Chicken pieces predusted on the SFJ preduster — Chicken pieces after predusting

Key features

Full embedding

Products travel inside the flour bed, so the predust coverage is complete, including edges and folds.

Works with any flour

Designed for plain and seasoned predust flours used in nuggets, fillets and wings.

Adjustable flour layers

Set the thickness of the top and bottom flour layers to match your product and pickup target.

Strong blower and vibrator

Excess flour is blown and shaken off before the product moves on, keeping the next step clean.

Easy cleaning

The screw conveying design is shaped for quick washing between production runs.

Variable speed

A frequency inverter controls the mesh belt speed so it matches the rest of your line.

Technical specifications

Model	SFJ300	SFJ400	SFJ600
Belt width	300 mm	400 mm	600 mm
Belt speed	3–15 m/min	3–15 m/min	3–15 m/min
Power	1.4 kW	3.7 kW	4.4 kW
Dimensions (L×W×H)	1680×550×1480 mm	3000×900×2150 mm	3000×1100×2150 mm

Capacity depends on product size and coating recipe. Send us your product details and we will confirm the throughput.

Applications

The SFJ preduster is used wherever batter or breadcrumbs follow, for example:

Chicken nuggets and chicken popcorn
Chicken drumsticks and wings
Fish fillets and fish fingers
Formed meat and vegetable patties

See it running

Forming, predusting, battering and breading machines working together

Where it fits in your line

Choose the same belt width as your forming machine and batter applicator for a smooth transfer.

Forming machine
Preduster
Batter applicator
Breading machine
Continuous fryer

Options and customization

Belt width matched to your line
Custom voltage and plug standard

Delivery, warranty and service

Item	Details
Lead time	SFJ300: 7–15 days. SFJ400 / SFJ600: 15–40 days.
Voltage	380 V / 50 Hz standard; other voltages on request
Warranty	12 months
Packing	Export wooden case; fumigated for shipments to Europe
Payment	T/T 30% deposit, 70% before shipment
Service	Remote support, spare parts, on-site installation and training on request

FAQ

Do I need a preduster if I already use batter?

In most nugget and fillet lines, yes. Predust dries the product surface and gives the batter a rough base to adhere to, which reduces bare spots and coating loss. We can test your product with and without predust for free.

Which belt width should I choose?

Match the width of the machines before and after it. The SFJ400 pairs with the CXJ400 forming machine, and the SFJ600 with the CXJ600.

Can it handle seasoned flour?

Yes. The SFJ preduster is designed to work with any predust flour, including seasoned blends.

What voltage does it use?

The standard is 380 V / 50 Hz. Other voltages can be built to order.