Edgebander Cutters
Edge Rounding Cutters DP HSK25R 77.5 x 23 R2.0 Z=4 for HOMAG and IMA Edgebanders
Edge rounding cutters in DP diamond, 77.5 mm cutting circle, HSK25R, R2.0 radius and Z=4, replacing Leuco 177659 and 177660 on HOMAG and IMA edgebanders.
Specifications
- Type
- Edge rounding / corner trim cutter
- Cutting Material
- DP (polycrystalline diamond)
- Radius R
- 2.0 mm
- Cutting Circle Diameter (D)
- 77.5 mm
- Basis Cutting Circle Diameter (D1)
- 70 mm
- Distance to Machine (a)
- 16.5 mm
- Hub Width (b)
- 23 mm
- Bore / Interface (d)
- HSK 25R
- Number of Teeth (Z)
- 4
- Rotation
- Left and right hand
- Replaces
- Leuco 177659 (left) and 177660 (right)
- Machine
- HOMAG and IMA edgebanding machines
- Application
- Rounding solid wood, veneer and plastic edge bands
After the edge band is applied and trimmed flush, the two corners of the band are still sharp. The edge rounding station cuts a radius on both corners so the panel feels finished and the band cannot be picked off at the corner. These are the cutters that do that job: DP diamond, 77.5 mm cutting circle, R2.0, Z=4, on an HSK25R interface.
R2.0 is the radius, and it is a specification choice
A 2.0 mm radius is the common furniture standard - enough to soften the corner and protect the band, without visibly changing the edge profile. A larger radius reads as a deliberate design detail; a smaller one is used where the band is thin or the profile has to stay tight. The radius is ground into the cutter, so it cannot be changed on the machine.
HSK25R and 24,000 rpm
HSK25R is a hollow shank taper interface. It centres on a taper and is clamped from inside the spindle, which gives high concentricity and rigidity at speed - which is why it is used on a rounding station that runs up to 24,000 rpm. A badly seated HSK tool will run out and leave a visible step in the radius, so clean the taper before every change.
Four teeth and the finish
Z=4 on a 77.5 mm cutting circle gives a high tooth frequency at 24,000 rpm, which is what produces a smooth radius rather than a faceted one. It also spreads the wear: each tooth takes a quarter of the cuts, so the cutter holds its radius longer.
Left and right hand
The rounding station uses a left-hand and a right-hand cutter to work the two corners of the band. They are supplied and replaced as a pair, because using a worn cutter on one side with a fresh one on the other shows as a difference in the radius between the top and bottom corner. These replace Leuco 177659 (left) and 177660 (right).
What it rounds
Solid wood, veneer and plastic edge bands on HOMAG and IMA edgebanding machines. The D1 basis cutting circle of 70 mm and the 16.5 mm distance to machine are the values that position the cutting circle relative to the panel, so they must match the machine setup.
How to specify the cutter
Give the radius, the cutting circle diameter, the hub width and the interface. If you are replacing a Leuco part, quote 177659 or 177660 and the machine model. Confirm the interface is HSK25R - the same cutter body is made in other interfaces for other machines.
The corner is the first place a band fails. A correct radius is what stops that happening.
ZhongJian Tech manufactures PCD and diamond edgebander tooling - jointing cutters, pre-milling heads, edge rounding cutters and replaceable insert systems - in Futian Town, Anyuan District, Pingxiang City, Jiangxi Province, China. Send the machine brand and model, the panel material and the part number you are replacing, and we will confirm the specification and quotation. Email ferrytk803@gmail.com, phone / WhatsApp +86 13617995900.
Frequently asked questions
Does this cutter fit my edgebander?
The bore is given in the specification table above and the machines it is built for are HOMAG and IMA edgebanding machines. Four values decide the fit — outer diameter, height, bore and Z layout — and the machine brand narrows the choice without replacing the measurement. Check the bore and the keyway against your spindle before ordering.
Is it a direct replacement for the OEM part number?
Yes — Leuco 177659 (left) and 177660 (right). Quote that part number when you inquire and the specification is cross-referenced against it, which is faster and more reliable than measuring a worn head.
What happens when the cutting edges dull?
A dull head shows up first as a rougher edge, then as a glue line that opens on every panel. Deal with it on condition rather than on a fixed calendar, because the wear rate depends on the panel material and the feed rate.
Which panels does it cut cleanly?
Its application is rounding solid wood, veneer and plastic edge bands. The requirement in every case is the same: no chipping on the top and bottom face, because the banding covers the edge and not the face. Feed rate, spindle speed and cutter condition all have to match for that to hold.
