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Description
CROSS SECTION 25×25 mm
LENGTH 150 mm
INSERT TNMG 1604rr
ANGLE κr 90°
Technical specifications of the TTGNR 25X25 M16 turning tool
| Technical data | |
|---|---|
| ISO designation | TTGNR 25X25 M16 |
| Shank height (h) | 25 mm |
| Shank width (b) | 25 mm |
| Overall length (L) | 150 mm |
| Functional overhang (f) | 32 mm |
| Entering angle (κr) | 90° |
| Clearance angle | 0° (negative) |
| Clamping system | ISO — top and through-hole clamping (T) |
| Insert type | TNMG 1604rr |
| Cutting direction | R — right-hand (L version available) |
| Manufacturer | Smoxh |
TTGNR 25X25 M16 turning tool – for facing and longitudinal turning
25×25 mm indexable turning tool for a TNMG insert
Turning tool TTGNR 25X25 M16 is an indexable turning tool designed for external turning on conventional and CNC lathes. The shank, with a cross section of 25×25 mm and a length of 150 mm, provides the rigidity required for industrial machining. The geometry with an entering angle of 90° allows facing and turning along a shoulder.
In the top and hole clamping system (T), the clamp secures the TNMG 1604rr insert from above and through its hole. The negative geometry of the 60° triangular insert with 6 cutting edges is suitable for roughing and medium machining, providing high cutting edge strength and cost efficiency through its double-sided design. The tool is compatible with TNMG 16 inserts in various carbide grades — select the grade to match the workpiece material.
Decoding the TTGNR designation of the TTGNR 25X25 M16 turning tool
What the individual letters in the ISO designation mean
Decoding the designation TTGNR
T
CLAMPING
Top and through-hole clamping (T)
The clamp secures the insert from above and through its hole.
T
INSERT SHAPE
60° triangle 60°
TNMG insert — negative, double-sided, 6 edges (3 per side)
G
ENTERING ANGLE
κr = 90°
Facing + turning along a shoulder
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: 25×25 mm · Insert: TNMG 1604rr
Typical applications of the TTGNR 25X25 M16 turning tool
Cutting operations:
| ▸ | Facing — the 90° angle provides uniform cutting of the end face |
| ▸ | Turning along shoulders — the right angle allows machining 90° corners |
| ▸ | Machining various materials — negative TNMG geometry provides a stronger cutting edge |
| ▸ | Turning steps and flanges — machining diameter transitions |
| ▸ | CNC production runs — repeatable cutting edge positioning and quick replacement |
Included
TTGNR 25X25 M16 package contents
Package contents:
| ✓ | Tool body TTGNR 25X25 M16 | 1 pcs |
| ✓ | Top clamp with screw | 1 pcs |
| ✓ | Hex key for insert replacement | 1 pcs |
| ✗ | TNMG 1604rr cutting insert (sold separately) | — |
Compatible TNMG 1604rr insert
TNMG 1604rr
The cutting insert is not included in the set — must be purchased separately. TNMG insert. Negative geometry means that the insert is double-sided and has 6 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 TTGNR 25X25 M16 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 2.0–3.5 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 (6 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 — TTGNR 25X25 M16
This tool accepts inserts TNMG 1604rr 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 entering angle of 90° provides facing perpendicular to the axis and turning along shoulders. Suitable for machining flanges, steps and right-angle corners on the workpiece.
The TNMG insert has negative geometry (clearance angle 0°), which means it is double-sided with 6 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 TNMG 160408 R-S AE9025 Horn
Reference: 11266 In stock > 10 items
€5.13
€6.31 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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