Slim Heat Sinks for Servo Drives

Requirement

The customer packs servo drives densely in control cabinets, with only 25 mm of depth for the sink and almost no gap between neighbours. Their previous sink had limited fin height and wide pitch, so fin area was short and device temperature ran high in continuous duty.

Our approach

Within 25 mm we pushed pitch to 1.5 mm and fin height close to the limit to recover area, left a slight taper at the fin tips so neighbouring units do not scrape, and thickened the base enough to carry the mounting screws with countersunk holes to save space.

Delivery and inspection

Dense-fin samples for in-cabinet side-by-side temperature testing, then production sampled on pitch and height.

Project summary

Device temperature dropped in the same cabinet layout and dense fins did not shield each other when units sit side by side. The section is now standard on the customer’s next drive generation.