Donald Rotary Platforms

Careful consideration has been given to making a bail suitably configured to accept today’s modern milking machinery. Cluster washers, cup removers, and milk meters are just a few of the components you may want to add to your new Donald Platform and with our designs it’s easy.

Brackets for cup remover rams are already in place as with most other brackets needed to correctly install ancillary milking equipment. At Donald Engineering we are flexible enough to add or change the design to suit your particular dairy shed needs.

The Donald Engineering bail design is suitable for most milking systems equipment. All Donald Engineering bails are made from galvanised steel pipe, fitted with purpose-built bracketing with an option to hot-dip galvanised for maximum protection, durability, and longer life. Care is taken to ensure you get the best value for money when you buy a Donald Platform.

Milk hoses can be fitted through our alignment slots or deck port on top of the platform – or made specifically to your individual requirements.

Platform drivers and rollers form a pivotal role in the successful operation of your new rotary. At Donald Engineering we ensure you have one heavy duty, high tensile roller for every 1.5 bails, guaranteeing the load is spread evenly and the platform is well supported. or our double beam and two rollers per bail nylon roller system. This means your dairy platform is reliable and long-lasting.

Our drive units are proven over many years of service. Each platform is supplied with a heavy duty dual motor drives connected to a variable speed control system and operated from either one of two control consoles placed strategically around the platform. D gates protect your animals from harm and are connected to the control system.

Donald Engineering construct kitset rotary platforms which can be shipped through New Zealand, and the world; with rotary platforms throughout Australia and America. We can also create platforms specific to your dairy operation. With over 44 years in the industry, Donald Engineering build rotary platforms that stand the test of time.

Typical Donald Platform construction specifications:

  • Decks, 100mm high strength reinforced minimum 35mpa concrete, mild steel or corrosion resistant steel
  • Stainless steel skirt
  • Galvanised mini skirt
  • Standard bails built from hot dipped galvanised pipe
  • 1020mm wide drench walkway suitable for drenching or meal feeders
  • 50mm breech rail normally mounted from floor supports
  • Kick rail full length of a breech rail
  • Access steps with handrail to centre of the pit
  • Standard heavy duty motor drive units with electric motors
  • High tensile platform rollers every 1.5 bails or approx 1.2m apart
  • 4 bearings to each roller
  • Nylon rollers 2 per bail with a double beam
  • 80mm galvanised centre post
  • Platform control panel – optional extra
  • Entry breach rail pressure safety gate
  • D gate at the entry point with a water jet to spray cups
  • Wide entrance ways and good bail design makes a Donald Platforms a pleasure to work in


Donald Engineering also offer a 24/7 emergency break down support for Donald Rotary Platforms. If you need support for your rotary platform, contact Donald Engineering on 03 206 6310.

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