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Carbide insert SPKX 060204 PH 6920 Palbit
0000010379
€10.36 tax inc.
Net price: €8.42
Description
SPKX 060204 carbide insert – for Palbit indexable drills
| Technical data | |
|---|---|
| Side length l | 6.00 mm |
| Insert thickness s | 2.38 mm |
| Corner radius rε | 0.40 mm |
| ANSI code | SPKX 21.51 |
| Shape | 90° square (S) |
| Grade | PH 6920 (Palbit) |
Cutting data for the SPKX indexable insert for ISO groups P, M, K, N
drilling steel, stainless steel, cast iron, and non-ferrous metals
| Material | Vc [m/min] | Feed f [mm/rev] |
|---|---|---|
| PSteel | 50-75 | 0.15-0.40 |
| MStainless steel | 35-50 | 0.10-0.22 |
| KCast iron | 50-70 | 0.25-0.45 |
| NAluminum and nonferrous metals | 80-100 | 0.25-0.40 |
Grade PH 6920 insert for indexable drills – design and applications
90° square, four edges, machining stainless steels
Carbide insert SPKX 060204 is a square indexable insert designed for indexable drills, tools with replaceable cutting edges secured by screws in a steel body. Shape S denotes a square with a 90° corner angle, providing four symmetrical cutting edges on one side of the insert. Grade PH 6920 from the Portuguese company Palbit is a cemented carbide selected for machining stainless steels, and its heat resistance allows operation at high drill speeds. The insert with a side length of 6.00 mm and a thickness of 2.38 mm is suitable for drilling holes on conventional machine tools and CNC (computerized numerical control) machines.
Key features of the SPKX 060204 cemented carbide insert
- Four cutting edges — the square S shape provides 4 corners of 90° on each side of the insert, indexed when dull without replacing the tool.
- Grade PH 6920 for stainless steels — Palbit cemented carbide selected for difficult, ductile materials in ISO group M.
- High-temperature resistance — the insert operates stably at high drill speeds and under intense heat generation in the hole.
- Increased resistance to abrasive wear and mechanical damage extends edge life under severe conditions.
- Material range from steel through cast iron to non-ferrous metals — ISO groups P, M, K, and N.
- Dimensions according to the designation: side length 6.00 mm, thickness 2.38 mm, corner radius 0.40 mm.
Parameter selection and insert operation in an indexable drill
The insert SPKX 060204 is mounted in indexable drills for producing holes with diameters typically greater than 12–15 mm, where productivity and a low cost per hole matter. Calculate spindle speed using the formula n = 1000·Vc/(π·D): for a drill with a diameter of 20 mm at a cutting speed of Vc = 60 m/min, the result is approximately 955 rpm. Select speed according to the material group, and keep feed per revolution within the range specified in the cutting data table. For stainless steel, apply a continuous coolant stream to limit work hardening and remove heat from the cutting zone.
An indexable drill typically uses two inserts — central and peripheral — with different roles, so select them according to the body manufacturer's recommendations. The insert SPKX 060204 is used for drilling structural steels, stainless steels, cast iron, and non-ferrous metals, corresponding to ISO groups P, M, K, and N. The square shape provides four edges per side, so when one corner becomes dull, simply rotate the insert in its pocket instead of replacing the entire tool. Select drilling depth to match the body's flute length, usually stated as a multiple of the diameter, for example 3×D or 4×D.
▲
Application limitation
Insert SPKX 060204 is part of an indexable drill system and is not sold as a set with the body. Select the central and peripheral inserts according to the specific body code — do not swap positions between pockets.
Square insert designation decoder according to ISO 1832
how to read the SPKX 060204 code — designation positions 1–7
Designation SPKX 060204 according to the standard ISO 1832: 4 letters describe geometry and construction, 3 numeric codes describe dimensions. Each field has a number, an icon, and a brief description.
ISO 1832 designation decoder — how to read the code
1Sshape 2Pangle α 3Ktolerance 4Xtype – 506size 602thickness 704radius rε
Positions 1–4 · ISO code
1SShape
Square 90°
4 corners of 90° per side
2PClearance angle
α = 11°
positive, single-sided
3KTolerance
Class K (precision)
ground thickness ±0.025 mm
4XType
Manufacturer-specific special type
features outside the ISO 1832 code
Positions 5–7 · dimensions [mm]
506Size
l = 6 mm
IC = 6 mm (square: IC = l)
602Thickness
s = 2.38 mm
between rake faces
704Corner radius
rε = 0.4 mm
code ÷ 10 → radius in mm
✓ 4 corners × 1 side = 4 cutting edges
Full designation: SPKX 060204 = 90° square · positive 11° · class K · special type · IC 6 mm (l 6 mm) · s 2.38 mm · rε 0.4 mm
SPKX 060204 insert compatibility
use in indexable drills — ISO material groups
Suitable for:
| ✓ | Indexable drills with a pocket for an SPKX 06 square insert |
| ✓ | Machining ISO M stainless steels — grade PH 6920 |
| ✓ | Drilling steel, cast iron, and non-ferrous metals — ISO groups P, K, and N |
| ✓ | Conventional machine tools and CNC machines |
▲
Do not use
The insert is intended exclusively for drilling — it is not suitable for turning or milling. The manufacturer does not provide cutting data for hardened steels.
Frequently asked questions about the SPKX 060204 insert
mounting, number of edges, and material selection
For indexable drills with replaceable cutting edges. This is a square insert of shape S with a side length of 6.00 mm, secured by a screw in a pocket in the steel body. Depending on the drill design, it operates as a central or peripheral insert.
Four — a square has 4 corners of 90° each, and the insert is single-sided. When one edge becomes dull, rotate the insert in its pocket to the next corner without replacing the entire drill.
Grade PH 6920 from Palbit is selected for stainless steels, but its range covers four ISO groups: steel (Vc 50–75 m/min), stainless steel (Vc 35–50 m/min), cast iron (Vc 50–70 m/min) and aluminum and non-ferrous metals (Vc 80–100 m/min).
No — replaceable inserts are purchased separately, without the drill body. An indexable drill typically uses two inserts, central and peripheral. Select them according to the code and recommendations of the manufacturer of the specific body.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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