Extruder breaker plates
We machine breaker plates for single and twin-screw extruders, to your drawing or from the worn plate you send us. Every hole is drilled here on our own machines, with high-pressure coolant through the drill.
A breaker plate carries the screen pack, builds head pressure and turns the rotating flow coming off the screw into straight flow into the die. It works hot, under pressure, with the screens pressed against it. The face has to stay flat and the holes have to stay clean.
We make them as one-offs and in sets: flat plates, stepped plates, domed plates, plates with counterbored screen seats, and plates for screen changers. Hole patterns, open area, counterbores and locating features are machined to your drawing. If there is no drawing, send us the old plate and we will measure it.
Every CNC machine on our floor runs a high-pressure coolant pump, and we drill with through-coolant carbide drills. Coolant reaches the cutting edge at the bottom of the hole and pushes the chips straight back out, so the holes come out clean and on size instead of tapered and rough-walled.
That matters on a breaker plate, where every hole has to match the last one. We have drilled plates with up to 1,600 holes.
Heat treating and plating go to vendors we have used for years, and the plate comes back here to be finished to size.
The largest plates we have made are 20″ in diameter and 4″ thick, for very high pressure extruders, cut from 15-5 PH H950. Anything under that is standard work here.
There is no minimum order. One plate to get a line running is a normal job, and so is a set of spares for the shelf.
A PDF, DWG, DXF, IGES or STEP file, or the worn plate itself.
RFQs are reviewed in one to two business days. Simple plates are quoted in one to two days.
Turned, faced, drilled and counterbored to your print.
Critical dimensions are checked before the plate ships. Material certs and inspection reports on request.
Freight or courier, or pick it up in Hillsborough.
Yes. Send us the old plate. We measure every feature and make a new one.
We drill them, with through-coolant carbide drills and high-pressure coolant. When a feature really needs EDM, we work with an EDM shop and do all the machining ourselves.
One. Single plates and small sets are normal work for us.
Down to 1mm (.039″), at depths up to 30 times the hole diameter.
Yes. Tell us what you want and we machine it to your numbers.
Yes, to your drawing or from the plate that came out of it.
Whatever you specify: material certs, first article inspection, inspection reports, on our form or yours.
Send us the drawing, or send us the old plate. We’ll come back with a price and a lead time.
