SJ-50H Commercial Food Freeze Dryer - 50-70 kg/batch

Is SJ-50H the right commercial food freeze dryer for my production?

Short answer: SJ-50H is designed for established small producers running stable commercial batches before an industrial FFD line. Its 50-70 kg/batch reference fresh load and 4.98 m² usable tray area help start the comparison, but the final batch depends on product moisture, cut size or fill depth, kilograms per tray, pre-freezing, condenser water load, target moisture and the qualified cycle.

How should I decide whether SJ-50H is large enough?

SJ-50H is the largest commercial H model in this range. Select it when products and orders are already stable enough to use 4.98 m² of tray area repeatedly, but a cart-based 500 kg FFD project would be premature. The decision should include weekly cycles, labor, pre-freezing, packaging throughput and whether one 50H or two smaller machines gives the better operating risk.

Capacity path: Move to the FFD industrial food freeze dryer range when production is managed by carts, separate pre-freezing, fixed daily raw-material intake, factory utilities and packaging-line balance. SJ-50H is not a substitute for an FFD simply because both are called commercial machines.

How do fresh kilograms become daily saleable output?

Start with product solids rather than assuming the catalog fresh-load number becomes dry product. A useful early estimate is:

Dry solids = fresh load × (1 − initial moisture fraction)
Estimated finished mass = dry solids ÷ (1 − target final moisture fraction)
Estimated water removed = fresh load − estimated finished mass

Then add loading, evacuation, primary and secondary drying, unloading, defrost, cleaning, changeover and packaging. The practical output per day or week may be limited by pre-freezing, operator time or packaging before it is limited by the chamber.

How should energy consumption be compared?

Installed electrical load is for connection planning; it is not the same as average consumption. Ask for a subsystem load schedule and compare kWh/batch, kWh/kg of water removed and kWh/kg of saleable product. Include external pre-freezing, room HVAC and packaging when comparing complete workflows. Product moisture, ambient temperature, condenser load and cycle pressure can change the result.

What information produces a useful quotation?

• Product photos, composition, initial moisture, cut size or fill depth and target moisture/water activity.
• Fresh kilograms per batch and per day, planned batches per week, seasonal peak and finished-product target.
• Pre-freezing method and temperature, transfer time, kilograms per tray and expected cycle window.
• Voltage, phase, frequency, room dimensions, door access, ventilation, drainage and cleaning workflow.
• Packaging format, allowable time before sealing, allergen or odor changeover and traceability requirements.

Engineering and manufacturing support from China

SJ's freeze-drying engineering team in China has about 15 years of practical experience across laboratory, pilot, pharmaceutical and food equipment. SJ Scientific Limited coordinates international projects and contracts; Ningbo Sjia Instrument Co., Ltd. provides manufacturing and engineering support in China. A commercial H project can be reviewed through the agreed specification, component list, electrical requirements, factory inspection or video review, operating documents, packing scope and recommended spare parts before shipment.

The equipment photos below support model and application discussion. Application illustrations are labeled as illustrations; actual output and product quality must be confirmed from the buyer's material, loading and cycle.