SJ-35H Commercial Food Freeze Dryer - 35-52 kg/batch
Commercial Food Freeze Dryer
SJ-35H is a commercial food freeze dryer and food lyophilizer machine with a 35-52 kg/batch reference fresh load, 3.5 m2 tray area and 18 trays for regular production across several food SKUs.
Model designation: SJ-35H is the primary public model. SJIA-35H may appear in factory records, nameplates, quotations, or earlier technical documents; both refer to the same SJIALAB equipment model.
SJ-35H food freeze dryer overview
The SJ-35H is rated for 35-52 kg/batch of reference fresh material and provides 3.5 m2 of usable tray area. A mid-range commercial system with more tray area and a lower condenser-temperature specification than the 30H.
It is best considered for regular production with several food SKUs. Typical applications include fruit, coffee trials, pet food, vegetables, dairy snacks, and ingredients. The actual fresh load varies with product density, water content, cut size, tray fill depth, and the drying recipe.
Key specifications
| Reference fresh load | 35-52 kg/batch |
|---|---|
| Usable tray area | 3.5 m2 |
| Tray arrangement | 18 trays on 9 shelf levels |
| Tray size | 410 x 475 x 20 mm |
| Machine dimensions | 880 x 1326 x 1480 mm |
| Machine weight | Approx. 400 kg net |
| Electrical supply | Single-phase or three-phase options, subject to configuration |
| Condenser temperature | At or below -60 °C |
| Control | 7-inch touchscreen, manual and automatic modes |
| Food-contact construction | Stainless-steel chamber and trays |
How to interpret the batch capacity
The capacity is a sizing reference, not a guaranteed load for every food. A thin layer of sliced fruit dries differently from a deep tray of puree, cooked rice, meat, or pet food. For reliable model selection, compare usable tray area and water load as well as kilograms per batch.
Where SJ-35H fits in the range
SJ-35H occupies a specific step in the commercial food freeze dryer range. For the nearest capacity choices, compare SJ-30H (30-45 kg/batch) and SJ-50H (50-70 kg/batch). The series comparison page shows the full capacity progression.
What to confirm before ordering
- Product type, slice or piece thickness, and expected fresh load per cycle
- Required electrical supply and local frequency
- Preferred condenser-temperature configuration and vacuum-pump arrangement
- Available floor space, ventilation, drainage, and cleaning workflow
- Target residual moisture, packaging method, and expected batches per week
SJ-35H FAQ
Is 35-52 kg/batch the finished dry-product weight?
No. It is a reference fresh-material load. Finished weight depends mainly on the starting moisture content and the final moisture target.
Can SJ-35H process different foods?
Yes. The equipment can support multiple food categories, but each product needs its own preparation, tray loading, freezing method, cycle settings, cleaning, and packaging plan.
Food freeze-drying guides
Use the food freeze dryer selection guide to compare H, commercial H, and FFD systems. For process planning, read the food freeze-drying process guide.
Commercial freeze dryer machine for food production
SJ-35H is a cabinet-style freeze dryer machine for food when a producer has moved beyond occasional home or test batches but does not yet need a cart-based FFD line. Compare prepared wet load, tray area, layer thickness, complete turnaround time, cleaning, utilities, labor, and packaging capacity.
Is SJ-35H the right commercial food freeze dryer for my production?
Short answer: SJ-35H is designed for regular commercial production across several food SKUs. Its 35-52 kg/batch reference fresh load and 3.5 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.
| Reference fresh load | 35-52 kg/batch; not finished dry-product weight |
|---|---|
| Usable tray area | 3.5 m² |
| Tray arrangement | 18 trays on 9 shelf levels; 410 × 475 × 20 mm |
| Condenser specification | ≤ -60°C |
| Typical applications | fruit, vegetables, herbs, tea ingredients, coffee ingredients, pet food and prepared products |
How should I decide whether SJ-35H is large enough?
SJ-35H is the middle commercial H option. It is useful when SJ-30H would require too many weekly cycles, but SJ-50H would leave persistent unused tray area. Its 35-52 kg reference fresh-load range should be checked against the normal load, the highest-water product and the packaging team’s ability to unload each batch promptly.
Capacity path: Compare the smaller SJ-30H and larger SJ-50H using the same product worksheet. Choose from weekly qualified output, not from unused peak capacity.
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.
More Pictures for Reference
Review SJ-35H equipment, tray loading and food-application references. Text placed over each image is also visible HTML, so buyers, search engines and assistive tools can read the model, planning value and application boundary. Application illustrations are not customer batch claims.
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SJ Scientific Limited handles international sales and project contracts; Ningbo Sjia Instrument Co., Ltd. provides manufacturing and engineering support.
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