New Grain Bunker Package – Everything you need for your harvest, view pricing online!

Sewing Machines / Servicing

Heavy duty sewing machines for all applications.

This Union Special bag closer is extremely lightweight, weighing just 6kg. But it’s still tough enough to handle rugged industrial conditions. It’s incredibly well balanced and ergonomically designed to fit the operator’s hand for ease of operation.



  • Equipped with coarse feed dog
  • Combined upper and lower feed for even feed and constant stitch length
  • Unit moves itself along as it sews for easier handling
  • Quick and easily converted from two thread double locked stitch type to single thread chain stitch



  • VOLTAGE : 240 V
  • SPEED : 1,200 – 1,700 rpm
  • Fully dustproof
  • Permanently lubricated motor bearings

Key Benefits

Polytex Bunker Tarps

Tarp Stenciling

Polytex Bunker Covers or Bunker Tarps can include tarp stenciling to your specifications


Tarp Stenciling

Polytex has a vast network of recommended & competent carriers Australia wide.

Polytex Ground Sheets

Tarp Stenciling

Polytex uses only first quality industrial fabrics for the manufacture of all products; well-known brands including Canvacon, Tarpee & Landmark variations

Grain Bunker Calculator

Grain Bunker Calculator

Access our calculator to get a comprehensive guide to planning and designing your grain storage.