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Description
Indexable end mill Ø14 mm – 90° end mill for APKT 1003 inserts
Technical data and dimensions – Smoxh ST90 AP10, 16 mm Weldon shank
| Technical data | |
|---|---|
| Cutter diameter D | 14 mm |
| Shank diameter d | 16 mm, Weldon |
| Max. depth of cut a | 10 mm |
| Flute length l | 30 mm |
| Overall length L | 120 mm |
| Entering angle | 90 degrees |
| Number of inserts Z | 1 |
| Inserts | APKT 1003, e.g., APKT 100305 |
| Coolant supply | external |
| Insert screw | M2.5x5, Torx T08, 1.0 N·m |
| Manufacturer | Smoxh, Turkey (SM12189) |
Diameter14 mm
Depth of cutup to 10 mm
Inserts1 × APKT 1003
Coolant supplyexternally
Indexable end mill Ø14 mm Smoxh ST90 AP10 cuts at an angle of 90° with one APKT 1003 insert. It machines square shoulders, slots, pockets and flat surfaces in steel, cast iron and aluminum. It also enters solid material by helical interpolation and mills holes from 15 to 27 mm without a drill. When the edge becomes dull, index the insert and continue machining.
This is an end mill: the 16 mm Weldon shank has a flat for the holder screw. The cutter does not rotate in the holder or pull out under load. The 120 mm length is the short version: the cutter deflects less because the holder is close to the inserts. The body has no coolant channel. Supply coolant or compressed air through the machine nozzles, directing the stream onto the inserts.
Six operations with a 90° end mill – from a flat surface to a hole
Face milling, shoulder milling, slotting, ramping, helical interpolation, plunge milling
Smoxh lists face milling, 90° shoulder milling, slotting, plunge milling, helical interpolation and contouring for APKT 1003 inserts. Each operation uses a different insert edge. The side edge, 10 mm long, forms the shoulder. The bottom edge smooths the floor and allows downward feeding. The drawings show cutter movement and the material being removed.
Face milling
Feed the end mill across the workpiece at a shallow depth of cut. The bottom insert edge, with a short chamfer near the corner, smooths the surface. A single pass removes a strip up to approximately 9 mm wide, or about two-thirds of the diameter. This is sufficient for ledges, end faces, and casting risers.
90° shoulder and contour
The side edge of the insert is parallel to the cutter axis, producing a wall perpendicular to the floor. A single pass can machine up to 10 mm of wall height. A 0.5 mm radius remains at the corner between the wall and floor, matching the insert corner radius.
14 mm wide slot
The end mill travels through solid material and cuts a 14 mm wide slot in a single pass. The full front of the cutter is engaged, and the single insert cuts at full engagement. Use a smaller depth of cut than for shoulder milling and ensure effective chip removal.
Ramping – angled entry
The end mill descends into the material along an inclined straight line while moving sideways. The bottom insert edge cuts downward, eliminating the need for a starter hole. This provides entry into a pocket or closed slot. At an angle of 3°, descending to a depth of 5 mm requires approximately 95 mm of travel.
Helical interpolation – a hole without a drill
The end mill follows a circular path, descending with each revolution. This produces a flat-bottom hole from 15 to 27 mm. Set the hole diameter in the machine program rather than by selecting a drill. This also provides smooth entry into a closed pocket.
Plunge milling
The end mill plunges axially downward, retracts, and steps sideways, much like a drill. Each plunge removes material only near the cutter periphery. Keep the stepover to approximately 6.6 mm: this is how far the insert extends inward from the periphery. The cutting force then acts mainly along the axis.
A hole without a drill – helical milling
Minimum and maximum hole diameters for a 14 mm end mill with a 0.5 mm insert corner radius
Helical milling is also known as helical interpolation. The end mill rotates about its own axis while the machine simultaneously moves it in a circle and downward. The path is shaped like a spring. A single 14 mm end mill can thus produce holes of various diameters.
The drawing shows the end mill in the smallest and largest holes, viewed from above. The gray disc at the cutter center is the area without cutting edges. The side view shows the cutter center path and pitch, which is the downward travel per revolution.
Minimum hole diameter: 15 mm
The bottom insert edge extends approximately 6.65 mm inward from the cutter periphery. It therefore ends approximately 0.35 mm from the cutter axis (7 − 6.65 mm). A disc approximately 0.7 mm in diameter without cutting edges remains at the cutter center. To remove all material there, the cutter center must follow a circle with a radius of at least 0.35 mm. Minimum hole diameter = 14 + 2 × 0.35 ≈ 15 mm. In a smaller hole, a core remains beneath the cutter and strikes the body.
Maximum flat-bottom hole diameter: 27 mm
The floor is flat when the hole center lies beneath the straight section of the bottom insert edge. This section ends at the corner, 0.5 mm short of the cutter periphery. Maximum hole diameter = 2 × 14 − 2 × 0.5 = 27 mm. Produce a larger hole in two steps: first use helical interpolation up to 27 mm, then enlarge it with circular passes.
Calculation: helical pitch for a 20 mm hole
Calculate the pitch along the cutter center path, not from the hole diameter. Path diameter = hole diameter 20 mm − cutter diameter 14 mm = 6 mm. One revolution covers a distance of 3.14 × 6 ≈ 18.8 mm. At a ramp angle of 2°, the pitch is 18.8 × 0.035 (tangent of 2°) ≈ 0.7 mm. A through hole in a 20 mm plate therefore requires approximately 29 revolutions. The pitch must not exceed 10 mm, which is the maximum insert depth of cut.
The shank is 16 mm in diameter, which is larger than the cutter. Holes and pockets can therefore be milled to a depth of up to 30 mm – the length of the cutting section ahead of the shank.
▲
Axial plunging – low feed rate
A core of approximately 0.7 mm remains at the cutter axis, where the insert does not cut. When plunging straight down, set the feed lower than for side milling. Plunge no more than 10 mm per entry – this is the maximum depth of cut.
APKT 100305 inserts – material selection and replacement
The insert grade determines material suitability; the end mill remains the same
The ST90 AP10 D14 end mill accepts APKT 1003 inserts in accordance with ISO 1832. The letter A denotes a 85° parallelogram, in practice a rectangular insert. P denotes a 11° clearance angle: the insert has positive geometry and cuts freely. The number 10 indicates the cutting edge length in millimeters, and 03 the insert thickness. The final digits 05 indicate a 0.5 mm corner radius.
| Insert | Workpiece material | Notes |
|---|---|---|
| APKT 100305 PDR H6310 Horn | steel, stainless steel | PVD TiAlN coating |
| APKT 100305 PDFR K10 Horn | aluminum, nonferrous metals, gray cast iron | grade K10 |
Horn is a Korean insert brand available in our store. Smoxh allows any ISO-compliant APKT 1003 insert in this end mill. To switch workpiece materials, simply change the insert without replacing the end mill.
Replacing and indexing the insert
The insert has two cutting edges. When one becomes dull, loosen the M2.5x5 screw with a Torx T08 key and rotate the insert by 180°. Before installation, clean chips out of the seat – a chip under the insert lifts it and causes runout. Tighten the screw to the 1.0 N·m torque specified by Smoxh. Replace the insert when both edges are dull.
Cutting data – starting values for APKT inserts
Speed, feed per tooth, and depth by material group
The table provides conservative starting values for milling a 90° shoulder with APKT inserts. Start at the lower limit and increase while monitoring the chips and spindle operation. Reduce the feed rate for slotting, ramping, and helical interpolation.
| Workpiece material | Cutting speed vc [m/min] | Feed per tooth fz [mm] | Depth ap [mm] | Width ae [mm] |
|---|---|---|---|---|
| P Structural and alloy steel | 130–200 | 0.10–0.20 | 1.0–4.0 | 4–9 |
| M Stainless steel | 70–130 | 0.06–0.15 | 0.5–2.0 | 3–8 |
| K Cast iron | 150–280 | 0.10–0.25 | 1.0–5.0 | 5–9 |
| N Aluminum (K10 insert) | 300–600 | 0.10–0.25 | 1.0–6.0 | 5–9 |
Spindle speed and feed rate calculation – steel, 150 m/min
Spindle speed = 1000 × cutting speed 150 m/min ÷ (3.14 × cutter diameter 14 mm) ≈ 3410 rpm. Feed rate = feed per tooth 0.10 mm × 1 insert × 3410 rpm ≈ 340 mm/min. Enter these two values in the machine program. In aluminum, at 400 m/min, spindle speed rises to approximately 9090 rpm – check that the spindle can reach it.
Indexable end mill Ø14 mm Smoxh ST90 AP10 replaces cutters for 90° shoulders, slots and faces, as well as a cutter for holes. It mills flat-bottom holes from 15 to 27 mm by helical interpolation. It uses one APKT 100305 insert, has a 16 mm Weldon shank and uses external coolant. The maximum depth of cut is 10 mm.
Questions about the ST90 AP10 D14 indexable end mill
Inserts, tool holder, coolant
ISO APKT 1003 inserts, e.g., APKT 100305 with a 0.5 mm corner radius. Grade H6310 from the Korean brand Horn is suitable for steel and stainless steel, and K10 for aluminum and cast iron. The insert is secured with an M2.5x5 screw with a Torx T08 recess, tightened to 1.0 N·m.
A Weldon holder for a 16 mm shank. The holder's side screw presses against the shank flat – this system conforms to DIN 1835-B. The end mill does not rotate in the holder or pull out under load.
Externally: use the machine nozzles to direct coolant or compressed air onto the inserts. The stream should clear chips from the pocket and hole. Versions with through-tool coolant have the letter H in their designation.
Product accessories
Carbide insert APKT 100305 PDFR K10 Horn
Reference: 0000004237 In stock > 10 items
€3.16
€3.88 brutto
Carbide insert APKT 100305 PDR H6310 Horn
Reference: 899652 In stock > 10 items
€3.16
€3.88 brutto
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