Ejector Blades

An ejector blade is a flat ejector for the features round pins cannot serve: ribs, gussets, bosses, and thin walls. The rectangular working end slides in a matching pocket, so the tolerance is on the blade’s thickness and width, not a diameter. Precision Core Pins grinds custom blades to your print in Orange County, California.

Made to your print

We match blade thickness, width, length, head, and the transition to the working section to your drawing or sample, in inch or metric.

Fit is on the flats

A blade slides on flat surfaces, so the grind holds thickness and width across the working length and keeps the faces square. We hold ground dimensions as tight as 0.00005 in, with surface and form grinding in-house for the flats.

Common applications

Thin-wall packaging, ribbed structural parts, and medical and electronics housings where a round pin would leave too small or wrongly shaped an ejection footprint.

Frequently asked questions

What is an ejector blade? An ejector blade is a flat, rectangular ejector for features round pins cannot serve: ribs, gussets, bosses, and thin walls. The tolerance lives on the blade’s thickness and width rather than a diameter. (More on ejector blades.)

When do you use a blade instead of a round pin? When the feature to eject is thin or narrow, like a rib or a thin wall, where a round pin would leave too small or wrongly shaped a footprint.

Can you match a worn blade? Yes. Send the sample and we reverse it to a print and quote.

What tolerances can you hold on thickness? We hold ground dimensions as tight as 0.00005 in. The exact tolerance depends on the blade, so send your print and we will confirm what we can hold.

Request a quote

Send your print or sample. Call (714) 540-5621 or request a quote.