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Sweet Potato Processing Equipment STMAC

Automated equipment capable of continuous processing 20 to 100 tons per day

Automation and cost reduction in sweet potato preparation facilities for shochu production has been achieved.

  1. Uniform steaming.
  2. Improved processing capacity.
  3. Facility expansion is possible.

Uniform steaming

A large quantity of sweet potatoes can be charged evenly in the equipment. The even height level ensures uniform steaming.

Improved processing capacity

Continuous processing offers improved daily processing capacity compared to conventional batch type equipment. 


Future expansion of the facility is possible. Processing capacity can be increased without major reconfiguration of the equipment.

Equipment Flow

Time Chart

Batch type (STM)
Production can be increased by increasing the number of batches.

Continuous type (STMAC)
With no time wasted in this process, processing time in the secondary fermentation process can be shortened as well.

※Sweet potato processing time with the batch type equipment (STM).Time varies depending on the specifications and capacity of the equipment.


Model Power source Feeding Capability Materials Setting place
STMAC20 Three-Phase
AC 200 / 220V
50 / 60Hz
20 t/Day C/S ・ SUS304 Indoor
STMAC40 40 t/Day
STMAC80 80 t/Day
  • The STMAC unit does not include a steam generator.
  • If requested, we can also manufacture a grinder mill.
  • Specifications are subject to change without notice for product improvements.
  • For more capability, please contact.

Technical Videos

  • The equipment has wide range of functions from steaming to cooling

    Automatic operation from loading to discharge is possible. By loading uniformly, uneven steaming is prevented.

  • Shochu (clean distilled spirit) factory

    Continuous steaming and cooling of sweet potato facility: STMAC50. By recycling steam, steam loss is reduced.

  • Feed rate increased specification

    Fully automatic sweet potato steaming system AST: Energy saving, time saving, and manpower saving. The steaming capacity of 10 t/h is supported.

Case study

  • Shochu(Clear distilled spirit) Brewing System