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Description
CROSS SECTION 25×25 mm
LENGTH 150 mm
INSERT DNMG 1104rr
ANGLE κr 62.5°
Technical specifications of the TDNNN 25x25 M11 turning tool
| Technical data | |
|---|---|
| ISO designation | TDNNN 25x25 M11 |
| Shank height (h) | 25 mm |
| Shank width (b) | 25 mm |
| Overall length (L) | 150 mm |
| Functional overhang (f) | 12.5 mm |
| Entering angle (κr) | 62.5° |
| Clearance angle | 0° (negative) |
| Clamping system | ISO — top and through-hole clamping (T) |
| Insert type | DNMG 1104rr |
| Cutting direction | N — neutral (both directions) |
| Manufacturer | Smoxh |
Turning tool TDNNN 25x25 M11 – for longitudinal turning and profiling
Indexable turning tool 25×25 mm for a DNMG insert
Turning tool TDNNN 25x25 M11 is an indexable turning tool designed for external turning on conventional and CNC lathes. The shank with a 25×25 mm cross section and a length of 150 mm provides the rigidity required for industrial machining. The geometry with a 62.5° entering angle enables longitudinal turning and profiling in both feed directions, with good access to the machined surface.
In the top and through-hole clamping system (T), the clamp secures the DNMG 1104rr insert from above and through its hole. The negative geometry of the 55° rhombic insert with 4 cutting edges is suitable for roughing and medium machining, providing high cutting edge strength and cost efficiency through its double-sided design. The tool works with DNMG 11 inserts in various carbide grades — select the grade to match the workpiece material.
Decoding the TDNNN designation of the TDNNN 25x25 M11 turning tool
What the individual letters in the ISO designation mean
Decoding the designation TDNNN
T
CLAMPING
Top and through-hole clamping (T)
The clamp secures the insert from above and through its hole.
D
INSERT SHAPE
55° rhombus 55°
DNMG insert — negative, double-sided, 4 edges (2 per side), good access
N
ENTERING ANGLE
κr = 62.5°
Longitudinal turning — special entering angle
N
CLEARANCE ANGLE
α = 0° (neg.)
Negative geometry — double-sided inserts, edges on both sides
N
DIRECTION
Neutral (N)
Operation in both directions — neutral tool
Shank: 25×25 mm · Insert: DNMG 1104rr
Typical applications of the TDNNN 25x25 M11 turning tool
Cutting operations:
| ▸ | Longitudinal turning with profiling — the 62.5° angle provides good access to the workpiece profile |
| ▸ | Roughing and medium machining of steel and cast iron — negative DNMG geometry provides a stronger cutting edge and 2× as many edges |
| ▸ | External taper turning — machining tapered and contoured surfaces |
| ▸ | Profiling and recess machining — the neutral insert orientation allows angled entry into recesses; the entry angle is limited by the insert shape |
| ▸ | CNC production runs — quick insert replacement and repeatability |
Included
Package contents for TDNNN 25x25 M11
Package contents:
| ✓ | Tool body TDNNN 25x25 M11 | 1 pcs |
| ✓ | Top clamp with screw | 1 pcs |
| ✓ | Hex key for insert replacement | 1 pcs |
| ✗ | DNMG 1104rr cutting insert (sold separately) | — |
Compatible DNMG 1104rr insert
DNMG 1104rr
The cutting insert is not included in the set — it must be purchased separately. DNMG insert. Negative geometry means that the insert is double-sided and has 4 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.
Installing and replacing the insert in the TDNNN 25x25 M11 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 1.0–2.0 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 (4 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 — TDNNN 25x25 M11
This tool accepts inserts DNMG 1104rr 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 62.5° entering angle provides good access to the workpiece profile. It is suitable for longitudinal turning, contour profiling, and recess machining.
The DNMG insert has negative geometry (clearance angle 0°), which means it is double-sided with 4 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 DNMG 110404 HM H6310 Horn
Reference: 0000006538 In stock > 10 items
€3.68
€4.53 brutto
Reviews
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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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