Omnidirectional ball roller solutions
Moving a die across a press bed is a shock-loaded, high-point-load problem. A heavy duty ball transfer unit rated 1000–2000 kg per ball, with a rigid housing and large ball, keeps the die moving without scoring the bed.
Divide the die or plate weight by the number of balls in contact, then apply a margin for the moment when the die is lifted and set down. Shock load is the governing case, not static weight. 76 mm balls in a heavy housing are the usual choice above 1000 kg per unit; smaller balls risk brinelling the race under impact.
On press beds, ball decks let a die slide in and out of the ram area with minimal push force. Die carts use a ball caster or a row of ball roller units so the die can be rotated and aligned before clamping. Four-hole flange mounting is standard; threaded stud mounting suits retrofit into existing tapped plates.
Heavy transfers fail by contamination and by flat-spotted balls, not by housing fatigue. Keep the bed clear of chips and scale, and check ball freedom before each die change. Spring-loaded ball transfer units allow replacement from above the bed without dismantling the deck. Keep spare replacement transfer balls in 76 mm on site.
With eight balls in contact, expect about 1500 kg per ball static. Add a 1.5–2x shock margin and confirm with the die set-down speed.
Above 1000 kg per unit, yes. Larger balls spread contact stress and resist brinelling under impact better than 60 mm balls.
Yes. Threaded stud mounting fits existing tapped plates, and drop-in units avoid re-machining the deck.
Our application engineers answer drawing questions, load checks and replacement-ball matching directly. Reach the team by email or phone, or visit booth 1.1H F246 at CIIF 2026 in Shanghai to handle samples and compare series side by side.
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