SIMTEK D08.0006.12 VR X400 Carbide Grooving Insert CNC Full Radius Internal Grooving Tool R0.6 W1.2 Min Bore 8mm

Full-Radius Internal Grooving Insert — R0.6 mm, 1.2 mm Wide, Bores from Ø8 mm D08.0006.12 VR X400

A precision-ground carbide insert that cuts a complete round-bottom groove in a single plunge. The R0.6 mm form radius produces the finished profile, the 1.2 mm width is exactly twice that radius, and the whole cut is made in bores from Ø8 mm — no special form tool, no second pass. Right-hand (VR) version, grade X400. Insert only; the matching simturn DX toolholder is ordered separately.

01 Product highlights

01 One insert forms the whole groove

This is a full-radius form tool: the R0.6 mm radius generates the finished round-bottom profile in a single plunge, and because the 1.2 mm width equals twice the radius, the groove comes out fully formed. No second tool, no blending pass, no custom-ground special.

02 Built for small bores from Ø8 mm

With a minimum bore diameter of 8.0 mm, this insert reaches internal grooves that conventional grooving tools struggle to produce. It is exactly the cut the simturn DX system was designed for: internal machining of small parts, with more than 2,000 standard items across the range.

03 Right-hand (VR) — left-hand match available

This article is the right-hand version, matching the standard insert seat and spindle direction. The identical geometry also exists as a left-hand (VL) article, so one product family covers both machine arrangements.

04 Grade X400, with X800 as an alternative

Supplied in SIMTEK grade X400. The same geometry is available in grade X800 — tell us your workpiece material and cutting data and we will match the grade that fits your operation.

05 Screw-clamped on the toolholder front face (connect code D08)

The insert is fixed with a screw on the front side of its toolholder, which keeps the seat rigid and repeatable and makes an edge change a minute of work. Match it to any simturn DX toolholder with connect code D08.

06 Full geometry data for programming and offsets

R 0.6 mm, w 1.2 mm, ØDmin 8 mm, tmax 1.0 mm, f 4.8 mm, a 7.8 mm, S 3.3 mm and Ød 6 mm are all published. Enter them straight into your CAM setup or tool-offset sheet instead of measuring an insert yourself.

07 Because the radius is the finished profile

With a full-radius insert, insert consistency directly drives groove size. Precision-ground carbide with repeatable R0.6 geometry means fewer size checks, less rework and more predictable tool-life planning across a production run.

08 One webcode for everything

The webcode AHUE references the catalogue page, technical drawing and cutting-parameter documents for this insert, so ordering, re-ordering and internal tool lists all point to the same reference.

02 Technical specifications

Published manufacturer data for D08.0006.12 VR X400. Inch values are direct conversions shown for convenience.

03 System & compatibility

The insert is supplied on its own. No toolholder, no clamp screw set and no alternate grade is included. If you need a complete ready-to-run tool, tell us your machine, bore size and groove tolerance and we will quote the insert together with the matching D08 toolholder.

04 Applications & use cases

• Internal round-bottom (full-radius) grooves in turned parts — the profile is produced in one plunge by the R0.6 form radius.
• Radiused seat and relief profiles running inside a bore, where a square-cornered grooving tool would need a second operation.
• Small-part machining on CNC lathes, including Swiss-type and sliding-head machines, for bores from Ø8 mm upwards.
• Series production where groove size has to stay repeatable part after part — indexing the edge restores the cutting geometry without touching offsets.
• Typical work areas include medical and instrument components, watch and precision mechanics, hydraulic and pneumatic fittings, automotive small parts and general precision engineering.

Suitability depends on your workpiece material — confirm the grade with us before production.

Confirm these three points before ordering.

• Bore and groove size — the bore must be Ø8 mm or larger, and the groove must be a 1.2 mm wide full-radius profile (R0.6 mm).
• Insert orientation — this article is right-hand (VR). Check whether your toolholder and spindle direction need the left-hand VL version instead.
• Grade — X400 is supplied as standard for this article; X800 is available on the same geometry. Send us the workpiece material and we will confirm the better fit.

05 Operating notes

• Depth of cut — maximum tmax is 1.0 mm. Work within the published limit and control chip formation with suitable feed and coolant.
• Cutting data — use the manufacturer's cutting-parameter document as the starting point, then adjust to your machine, material and rigidity.
• Clamping — keep the seat and clamp screw clean; a worn screw or a dirty seat shows up immediately as groove-size scatter.
• Edge changes — index or replace the edge as soon as the radius shows wear; with a full-radius insert, edge wear goes straight into the groove profile.
• Coolant — direct the coolant stream into the groove; chip evacuation in small bores is the main driver of tool life.

06 What's in the box

• 1 × SIMTEK simturn DX full-radius grooving insert, model D08.0006.12 VR X400, grade X400
• Toolholder, clamp screw set and alternate grades: not included
• Supplied individually, marked with the model number on the packaging