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Description
DIAMETER Ø8 mm
LENGTH 125 mm
INSERT CCMT 0602rr
ANGLE κr 75°
Technical specifications of the S08K SCKCR 06 boring bar
| Technical Data | |
|---|---|
| ISO designation | S08K SCKCR 06 |
| Shank diameter (d) | Ø8 mm |
| Effective height (h) | 7 mm |
| Overall length (L) | 125 mm |
| Functional overhang (f) | 25 mm |
| Min. bore diameter (D_min) | Ø12 mm |
| Entering angle (κr) | 75° |
| Clearance angle | 7° (pos.) |
| Clamping system | ISO — center screw (S) |
| Insert type | CCMT 0602rr |
| Cutting direction | R — right-hand |
| Shank material | Steel (S) |
| Manufacturer | Varel |
S08K SCKCR 06 boring bar – for internal turning and bore finishing
Precision internal turning tool for machining bores from Ø12 mm
Boring bar S08K SCKCR 06 is a professional boring bar designed for longitudinal turning and bore finishing with diameters from 12 mm. The round steel shank with a diameter of Ø8 mm and a length of 125 mm ensures cutting stability even with greater tool overhang. The geometry with an entering angle of 75° allows longitudinal turning with undercutting while maintaining good access to the machined surface.
The central screw clamping system (S) ensures the highest cutting edge positioning repeatability and easy replacement of the CCMT 0602rr insert. The positive geometry of the 80° rhombic insert with 4 cutting edges performs well in finishing, providing low cutting forces and a smooth machined surface. The boring bar works with CCMT 06 inserts in various carbide grades — select the grade to match the workpiece material.
Typical applications of the S08K SCKCR 06 boring bar
Cutting operations:
| ▸ | Longitudinal boring — enlarging and finishing cylindrical bores from Ø12 mm |
| ▸ | Bore finishing — positive CCMT geometry provides low cutting forces and a smooth surface |
| ▸ | Internal taper turning — bearing seats, internal chamfers, Morse tapers |
| ▸ | Light facing — the 75° angle allows machining the face inside the bore |
| ▸ | CNC production runs — repeatable cutting edge positioning and quick insert replacement in the holder |
Included
Package contents for S08K SCKCR 06
Package contents:
| ✓ | Boring bar body S08K SCKCR 06 | 1 pcs |
| ✓ | Center screw for clamping the insert | 1 pcs |
| ✓ | Hex key for insert replacement | 1 pcs |
| ✗ | CCMT 0602rr cutting insert (sold separately) | — |
Compatible CCMT 0602rr insert
CCMT 0602rr
The cutting insert is not included in the set — must be purchased separately. CCMT insert. Positive geometry means that the insert is single-sided and has 4 cutting edges, providing low cutting forces and good surface quality.
Select the insert grade to match the workpiece material: P (structural steels), M (stainless steel), K (cast iron), N (aluminum). You can find compatible inserts in the section "Related products" below.
Insert installation and replacement for the S08K SCKCR 06 boring bar
Instructions for the center screw clamping system (S)
Insert replacement procedure step by step
1 Unscrew the screw
Unscrew the center screw 2-3 turns
2 Clean the insert seat
Remove chips and debris
3 Install the insert
Position in the seat
4 Tighten the screw
Torque 0.6–1.2 Nm
Important: Do not exceed the recommended tightening torque — this may damage the thread in the seat or crack the insert.
Checks before starting work:
| ▸ | Tool overhang — do not exceed 4×d (32 mm) without support; use vibration damping for greater overhang |
| ▸ | Cutting edge height — set the cutting edge at spindle center height (±0.05 mm) |
| ▸ | Insert seat condition — check that the contact surface is not damaged or worn |
| ▸ | Secure clamping — the insert must have no play in the seat |
| ▸ | Indexing — when an edge wears out, rotate the insert to a fresh edge (4 edges in total) |
Note: Use internal coolant (through the spindle) for boring whenever possible. When machining without coolant, reduce cutting parameters by 20–30%. Long tool overhang promotes vibration — if vibration occurs, reduce the depth of cut and increase the feed.
Frequently asked questions — S08K SCKCR 06
The minimum bore diameter is Ø12 mm. In smaller bores, the tool head interferes with the machined wall, preventing proper cutting.
For a steel shank of Ø8 mm, the recommended maximum overhang without damping is 4×d, or 32 mm. Above this value, vibration may occur — reduce the depth of cut or use a vibration-damped boring bar.
The CCMT insert has positive geometry (clearance angle 7°), which means it is single-sided with 4 cutting edges. When one edge wears out, rotate the insert to a fresh edge.
Product accessories
Carbide insert CCMT 060202 H6310 Horn
Reference: 0000006504 In stock > 10 items
€3.16
€3.88 brutto
Carbide insert CCMT 060204 H6310 Horn
Reference: 0000005754 In stock > 10 items
€3.16
€3.88 brutto
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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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