- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
CROSS SECTION 20×20 mm
LENGTH 125 mm
INSERT SNMG 1204rr
ANGLE κr 75°
Technical specifications of the TSKNR 20x20 K12 turning tool
| Technical data | |
|---|---|
| ISO designation | TSKNR 20x20 K12 |
| Shank height (h) | 20 mm |
| Shank width (b) | 20 mm |
| Overall length (L) | 125 mm |
| Functional overhang (f) | 26 mm |
| Entering angle (κr) | 75° |
| Clearance angle | 0° (negative) |
| Clamping system | ISO — top and through-hole clamping (T) |
| Insert type | SNMG 1204rr |
| Cutting direction | R — right-hand (L version available) |
| Manufacturer | Smoxh |
TSKNR 20x20 K12 turning tool – for longitudinal turning
20×20 mm indexable turning tool for an SNMG insert
Turning tool TSKNR 20x20 K12 is an indexable turning tool designed for external turning on conventional and CNC lathes. The shank with a 20×20 mm cross section and a length of 125 mm provides the rigidity required for industrial machining. The geometry with a 75° entering angle reduces radial force compared with a tool with a 90° angle.
In the top and through-hole clamping system (T), the clamp secures the SNMG 1204rr insert from above and through its hole. The negative geometry of the 90° square insert with 8 cutting edges is suitable for roughing and medium machining, providing high cutting edge strength and cost efficiency thanks to its double-sided design. The tool is compatible with SNMG 12 inserts in various carbide grades — select the grade to match the workpiece material.
Decoding the TSKNR designation of the TSKNR 20x20 K12 turning tool
What the individual letters in the ISO designation mean
Decoding the designation TSKNR
T
CLAMPING
Top and through-hole clamping (T)
The clamp secures the insert from above and through its hole.
S
INSERT SHAPE
Square 90° 90°
SNMG insert — negative, double-sided, 8 edges (4 per side)
K
ENTERING ANGLE
κr = 75°
Longitudinal turning — reduced radial force
N
CLEARANCE ANGLE
α = 0° (neg.)
Negative geometry — double-sided inserts, edges on both sides
R
DIRECTION
Right-hand (R)
Feed to the left — from the tailstock toward the spindle
Shank: 20×20 mm · Insert: SNMG 1204rr
Typical applications of the TSKNR 20x20 K12 turning tool
Cutting operations:
| ▸ | Longitudinal turning — the 75° angle reduces radial force compared with a tool with a 90° angle |
| ▸ | Roughing and medium machining of steel and cast iron — negative SNMG geometry provides a stronger cutting edge and 2× as many edges |
| ▸ | External taper turning — machining tapered and contoured surfaces |
| ▸ | CNC production runs — quick insert replacement and repeatability |
Included
TSKNR 20x20 K12 package contents
Package contents:
| ✓ | Tool body TSKNR 20x20 K12 | 1 pcs |
| ✓ | Top clamp with screw | 1 pcs |
| ✓ | Hex key for insert replacement | 1 pcs |
| ✗ | SNMG 1204rr cutting insert (sold separately) | — |
Compatible SNMG 1204rr insert
SNMG 1204rr
The cutting insert is not included in the set — must be purchased separately. SNMG insert. Negative geometry means that the insert is double-sided and has 8 cutting edges, providing a stronger cutting edge and twice as many edges as a single-sided insert.
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 TSKNR 20x20 K12 turning tool
Instructions for top and through-hole clamping (T)
Insert replacement procedure step by step
1 Loosen the clamp
Loosen the clamp screw 2-3 turns
2 Clean the insert seat
Remove chips and debris
3 Install the insert
Position in the seat under the clamp
4 Tighten the clamp
Torque 3.0–4.5 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 1.5× the shank height without support |
| ▸ | Cutting edge height — set the cutting edge at spindle centerline height |
| ▸ | 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 (8 edges in total) |
Note: Use coolant during machining — it extends insert life and improves surface finish. When machining without coolant, reduce the cutting parameters by 20–30%.
Frequently asked questions — TSKNR 20x20 K12
This tool accepts inserts SNMG 1204rr in any carbide grade. Select the grade to match the workpiece material: P (steels), M (stainless steel), K (cast iron), N (aluminum). You can find compatible inserts in the "Related products" section below.
The 75° entering angle reduces radial force compared with a tool with a 90° angle. It is suitable for longitudinal turning.
The SNMG insert has negative geometry (clearance angle 0°), which means that it is double-sided with 8 cutting edges. When one edge wears out, rotate or flip the insert to use the next edge — this significantly reduces tooling cost per part.
Product accessories
Carbide insert SNMG 120408 MA H6310 Horn
Reference: 0000002922 In stock > 10 items
€5.26
€6.47 brutto
Reviews
No customer reviews for the moment.
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 |
Recommended for you
Viewed products
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.