Tool Holder Chuck HSK63F-EOC25/SYOZ25-80 Collet Chuck Replacement for 4-014-12-0100

Replacing a worn HSK63F collet chuck does not mean changing the spindle or the tooling system. This is the drop-in body for part 4-014-12-0100 (4014120100): HSK63F hollow shank with face and taper contact, EOC25 / SYOZ25-80 collet seat, 60 mm body diameter, 1.21 kg net weight, alloy steel, precision ground. It seats on the same spindle nose and in the same magazine pockets, so there is no second part number to chase down, and the price of the holder is quoted per order.

Three things go wrong when a collet chuck reaches the end of its life on a CNC machining center: runout starts to show on the finished surface, the collet stops gripping at the same depth, and the machine waits while someone searches for the right part number. None of them stops the spindle on day one. They surface later, as a scrapped batch.

The HSK63F-EOC25/SYOZ25-80 is a CNC tool holder chuck, the collet body between an HSK63F spindle nose and the cutter. It is the replacement for part 4-014-12-0100, also written 4014120100, so a worn holder is swapped on its own: the spindle stays on the machine and the tooling system does not change. HSK63F is a hollow-shank interface that locates on face and taper contact, which keeps the cutter on centre.

The collet seat is EOC25 / SYOZ25-80 — one seat, one collet, one clamping action. Precision grinding on that seat is what puts even force around the shank, so the tool holds its depth through heavy cuts instead of creeping out. It is listed for milling, drilling, engraving and finishing on steel, aluminium, cast iron, plastics and composites.

The body is alloy steel, precision ground, 60 mm in diameter and 1.21 kg net, made in China. Price is quoted per order, and nothing on the machine is re-tooled to fit it.

What separates this body from a generic chuck is the interface, the part number it replaces and the seat it clamps on — all three are stated, not assumed.

• HSK63F hollow shank — the interface is named in the model code, so the body seats on a spindle nose and in magazine pockets already cut for HSK63F.
• Drop-in for 4-014-12-0100 — the part number it replaces is stated, and 4014120100 is the same number without separators, so it is ordered against the line already on your spare-parts list.
• EOC25 / SYOZ25-80 collet seat — one seat, one collet, one clamping action: the shank is clamped around its circumference instead of through a stack of intermediate parts.
• Ground seat — the seat is precision ground, which is what holds runout down after the first few hundred tool changes.
• 60 mm body — the diameter is stated, so the body is checked against the pockets and fixtures it has to pass through.
• 1.21 kg net — the weight is stated, so a full magazine is calculated before the holder arrives, not after it is loaded.
• Alloy steel — a steel body rather than a light alloy, so the taper and the seat hold their form through repeated clamping.
• Four operations, one body — listed for milling, drilling, engraving and finishing on steel, aluminium, cast iron, plastics and composites.

When a holder starts to run out there are two habits: run it and sort the scrap later, or stop the spindle and wait for a replacement. A body matching the interface and part number you already run is the third option.

• Change the holder, not the spindle. HSK63F is the interface in the model code, so a worn body is swapped on its own and the spindle stays bolted to the machine.
• One part number to read. 4-014-12-0100 is the number on your spare-parts list, so the order is raised from a code instead of from a photo.
• The tool stops walking. One ground seat clamps the shank around its circumference, so depth stays the same from the first change to the hundredth.
• A seat that stays round. Precision grinding on the collet seat is what the steel body is built around, and it is what keeps runout from climbing.
• Size you can check first. 60 mm diameter and 1.21 kg net are both stated, so clearance and magazine load are worked out before the order.
• Four operations from one body. Milling, drilling, engraving and finishing on steel, aluminium, cast iron, plastics and composites — one holder covers the changeover.

HSK63F. The hollow-shank interface is named in the model code (HSK63F-EOC25/SYOZ25-80) and again in the specification, so it goes on a spindle nose cut for HSK63F bodies and nowhere else.

Yes. The holder is listed as the replacement for part 4-014-12-0100, and 4014120100 is the same number written without separators, so either form raises the same order.

EOC25 / SYOZ25-80 collets. That is the collet standard stated for this body, so the shank size you can run is the range your own EOC25 collet set covers.

No. HSK63F is already the interface on the machine, and the body is the replacement for part 4-014-12-0100, so it is a holder swap — the spindle stays bolted and the collet family stays the same.

60 mm diameter and 1.21 kg net weight. Both values are stated, so clearance in a pocket and the load on a magazine are checked before the order is placed.

It holds the body rigid on the spindle nose. Both the face and the taper are in contact, so the cutter stays on centre and vibration is reduced, which makes the surface finish steadier than a grip on the taper alone.

Milling, drilling, engraving and finishing. It is listed for steel, aluminium, cast iron, plastics and composites, and used in mould making, automotive, aerospace and electronics work.

Price is quoted per order. Send the model HSK63F-EOC25/SYOZ25-80, the part number 4-014-12-0100 (or 4014120100) and the quantity you need, and the quote comes back against that quantity.