90mm Spindle CNC Dust Cover Dust Collector For CNC Router Engraving Machine

Cutting wood on a router and tired of chips round the collet? This is a dust cover for a 90 mm spindle collar: a white painted steel plate with a 90 mm clamp bore, a push-pull sliding collar held by one black knob, a round outlet for the extractor hose, and a yellow nylon brush skirt that seals against the panel. The same pattern is built in seven bores from 67 mm to 125 mm. If your collar measures 90 mm, this is the size. Nothing to wire up; price on request.

Anyone cutting MDF, plywood or solid wood on a router meets the same three things. Chips fly up round the collet and pack into the nut, so the next tool change takes longer. Grit settles on the Z-axis rail and on the blocks behind it. And the hose hangs off a cable tie, with nothing holding its mouth at the cut. A shoe in the wrong bore adds a fourth problem: it rattles, lifts off the panel and lets the chips out.

This is a dust cover for a 90 mm spindle. It clamps on the spindle collar and sits between the motor and the work. The upper body is a thick steel plate, painted white, carrying two openings: a 90 mm bore that grips the spindle, and a round outlet that takes the extractor hose. The collar is a push-pull sliding door held by one black hand knob, so the cover opens sideways for a bit change instead of being lifted off the machine.

Under the plate sits a yellow nylon brush ring, stitched into a mesh band, so the bristles flex over the surface instead of scraping it. The same cover is built in seven bore sizes, 67 mm to 125 mm. Fitting needs no change to the machine: it slides over the collar and the knob locks it.

What this cover gives a 90 mm spindle that a shop-made shroud does not:

• 90 mm clamp bore — formed to grip a 90 mm spindle collar, so the cover sits square on the motor.
• Push-pull sliding door — opens sideways on a slide with one black knob, so the cover comes off without tools.
• Round hose outlet — a port beside the bore takes the extractor hose, so dust leaves through the shoe instead of blowing across the table.
• Yellow nylon brush — a flexible ring under the plate seals against the panel and flexes over clamps.
• Mesh band — the bristle row is stitched into a mesh strip, so the ring keeps its line as it wears.
• Thick steel plate body — painted white, so the shape holds when the shoe is bumped against a clamp.
• No electrics — no motor, no sensor, no cable to route along the gantry, nothing to set in the control.
• Seven bores — 67, 70, 80, 90, 100, 105 and 125 mm off one pattern, covering the router and the engraver.
• Fits as it arrives — it clamps on the collar already on the machine; the spindle and the Z plate are not touched and nothing is drilled.

Dust control on a router usually comes down to two bad choices: a shop-made shroud that survives one season, or a different shoe for every spindle. This cover sits between the two.

• One part, seven collars. With bores from 67 mm to 125 mm, a shop running a router and an engraver stocks one family instead of two fittings, and orders by collar size rather than by machine brand.
• Chips stop reaching the rails. The brush ring drops below the collet, so debris is drawn into the outlet instead of settling on the Z-axis blocks, where grit shows up later as play.
• Bit changes stay quick. The sliding collar opens with one hand knob, so the cover comes off for a tool change without cutting the hose tie or re-hanging the extractor.
• A repair part, not a rebuild. A damaged cover is one steel-and-nylon item in one size, so it is replaced alone while the spindle, the rails and the extractor stay in service.
• Air the operator can work in. The brush seals the cut area, so the extractor pulls fine dust at the source instead of the operator breathing it across the shop.
• Nothing to wire, nothing to fail. No motor, no sensor, no cable: fitting the cover does not touch the machine control, so there is no new fault to trace.

Only if the spindle collar measures 90 mm across. Measure the collar where the cover clamps, not the motor body: an 80 mm bore will not pass over a 90 mm collar, and a 90 mm bore on an 80 mm collar will not grip.

With a caliper, on the collar itself. Take the outside diameter in millimetres at the point where the cover will clamp, and compare it with 90 mm — motor body diameter and spindle nose diameter are different numbers on most routers.

Push-pull, by hand. The collar is a sliding door held by one black knob: release the knob, slide the door open, and the collet is clear — no key, and no need to take the hose off.

No. The cover clamps on the collar that is already there, so the spindle, the Z plate and the hose connection stay as they are, and nothing is drilled into the machine.

Steel plate and nylon. The upper body is a thick steel plate painted white, and the skirt is a yellow nylon brush stitched into a mesh band.

Yes — through the round outlet next to the bore, but check the outlet size against your hose first. Hose diameters differ between extractors, so that is the one dimension to confirm before you order.

Yes: 67, 70, 80, 90, 100, 105 and 125 mm bores. This page is the 90 mm version; the rest come off the same pattern, so the shape and the brush are the same, only the bore changes.

Woodworking CNC routers, engraving machines and milling machines with a 90 mm spindle collar. It is a spare part for the machine, not a standalone extractor: it needs a vacuum or dust extractor connected to the outlet to move the dust away.