3-003-04-4840 Spacer 3003044840 Glue Roller 25x30x20 Woodworking Machine Spares

Need the ring that sets the glue roller gap on an edge bander? This is Homag part number 3-003-04-4840, also written 3003044840: a 25 x 30 x 20 mm spacer — 25 mm bore, 30 mm outside diameter, 20 mm face width — for the glue roller assembly on woodworking edge banding machines. It is supplied new in a wear-resistant grade and fits the existing shaft and housing with no machining. Price on request; ships by DHL, FedEx or UPS. Everything below refers to this one part number only.

Uneven glue on the banding line usually comes from the glue station, not the glue. A worn spacer lets the roller drift in its housing, the film goes thick on one side and thin on the other, and no setting corrects it. Replacing the whole roller unit because one ring is worn costs several times the price of the part that failed.

The 3-003-04-4840 is that ring: the spacer for the glue roller on woodworking edge banding machines, listed under Homag part number 3-003-04-4840 and the compact 3003044840 format used on invoices. It measures 25 x 30 x 20 mm — 25 mm bore, 30 mm outside diameter, 20 mm face width — so the roller keeps its centre line instead of drifting into the pot wall.

The bore locates on the roller shaft, the 20 mm face carries the axial load against the neighbouring ring, and the 30 mm outside diameter holds running clearance inside the housing. Because the width is fixed, adhesive is laid on a defined band rather than wandering, which removes the thick-thin seam.

The spacer is supplied new, in a wear-resistant grade picked for a station where hot-melt film and dust are constant. Fitting uses the existing shaft and housing: no machining, no shims. A used ring shows a visible step on the face or rocks on the shaft — either means replacement is due.

One small ring, seven checkable numbers and interfaces — every line below refers to the 3-003-04-4840 only.

• 25 mm bore, shaft-located — the ring slides onto the existing roller shaft, so radial position comes from the shaft and not from a shop-made bushing.
• 30 mm outside diameter — sets running clearance inside the roller housing and keeps the ring off the glue pot wall.
• 20 mm face width — fixes the axial gap between neighbouring rings, and that gap defines the width of the adhesive band applied to the edge.
• 25 x 30 x 20 mm, stated on the line item — you can measure a removed part with a caliper and match all three readings before ordering.
• Two part numbers, one item — 3-003-04-4840 matches the Homag-style number on drawings, 3003044840 matches the number on invoices and old labels.
• New condition — supplied as a new part, so the wear step of a used spacer is not carried into the rebuilt roller.
• Wear-resistant grade — material is selected for a glue station, where a thin hot-melt film and airborne dust are part of normal running.
• Drop-in fitting — the existing shaft and housing are reused, so a spacer change is a bench job during a scheduled cleaning stop.
• Courier dispatch — single pieces and bulk quantities ship by DHL, FedEx or UPS, whichever account you nominate.

Buyers arrive here with the same choice: keep running a roller assembly that glues unevenly, or pay for a complete unit. The spacer is the third option.

• You stop buying whole roller units. A worn 25 x 30 x 20 mm ring is the cheapest part in the assembly, so replacing only it leaves the roller and housing in service.
• The glue seam stops wandering. Once the axial gap is back to 20 mm, adhesive is applied on a defined band instead of a thick-thin one, and the operator has one less variable to chase.
• Bench time stays short. No machining, no shims, no drawing revision — the spacer goes onto the same shaft the old one came off.
• Procurement matches it first time. Both number formats sit on the same page as the 25 x 30 x 20 mm size, so the drawing, the invoice and the old label all point to one item.
• Fewer unplanned stops. A step worn into the face is the usual cause of a glue-line fault mid-shift; swapping the ring during a scheduled clean removes that failure path.
• Quotation without guesswork. Send the quantity and the number you have, and the reply is a price for this item and its courier freight by DHL, FedEx or UPS.

It fits the glue roller assembly of Homag-type edge banding machines. The ring sets the axial position of the roller inside its housing, and it is listed under Homag part number 3-003-04-4840 / 3003044840 with a 25 x 30 x 20 mm size.

Yes. Both numbers identify this one item. 3-003-04-4840 is the Homag-style writing with separators, 3003044840 is the compact form printed on invoices and older labels, and either one can be quoted.

25 mm bore, 30 mm outside diameter and 20 mm face width. On the line item the same spacer reads 25 x 30 x 20 mm, so a caliper check on a removed part gives three numbers you can compare directly.

A visible step on the face or a bore that rocks on the shaft means it is worn. Both change the axial gap, which shows up on the board edge as a glue band that is thick on one side and thin on the other.

No. The spacer is supplied as its own item, so a worn ring can be changed on its own and the roller, shaft and housing stay in service.

It is new. Condition is stated as new on the line item, so the spacer arrives without the wear step that a used ring carries.

No. The bore is 25 mm and the width 20 mm, so the spacer slides onto the existing roller shaft and sits against the neighbouring ring in the same space as the part it replaces.

Prices are quoted on request, and the part ships by DHL, FedEx or UPS. Send the quantity you need together with the part number, and the reply covers the spacer plus courier freight.