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Ball Transfer Unit

D Series Ball Transfer Units

The D series covers the heavier bolt-down and stud-mount bodies in the ball transfer range, designed to be fixed rigidly into a steel plate or frame and left there. Where a pressed cup is a surface fitting, a D unit becomes part of the structure.

The problem this group solves

Bolt-down units are used when vibration or lateral force would work a pressed unit loose — typically on moving machinery, tilting tables or anything a forklift reaches into.

How to choose

Check the plate thickness and the thread reach before selecting a stud length; a stud that bottoms out will hold the housing off the plate and destroy the load rating.

Typical applications

  • Tilting and lift tables where the unit must not migrate
  • Transfer decks on mobile and vibrating equipment
  • Heavy pallet and container handling plates
  • Structural ball beds built into welded frames

Frequently Asked Questions

How is a D series unit fixed?

Through the plate from underneath, with a threaded stud or bolt holes in the base, so the housing is clamped rather than pressed.

What torque should be used on the fixing?

Torque depends on the stud size and plate material, so we supply the thread and stud dimensions with the drawing rather than a blanket figure.

Need d series quoted?

Send the model numbers and quantities; we reply with price, lead time and drawings.