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Description
CROSS SECTION 25×25 mm
LENGTH 150 mm
INSERT SNMG 1204rr
ANGLE κr 45°
Technical specifications of the PSSNR 25X25-12 turning tool
| Technical data | |
|---|---|
| ISO designation | PSSNR 25X25-12 |
| Shank height (h) | 25 mm |
| Shank width (b) | 25 mm |
| Overall length (L) | 150 mm |
| Functional overhang (f) | 32 mm |
| Entering angle (κr) | 45° |
| Clearance angle | 0° (negative) |
| Clamping system | ISO — lever/pin (P) |
| Insert type | SNMG 1204rr |
| Cutting direction | R — right-hand (L version available) |
| Manufacturer | Smoxh |
PSSNR 25X25-12 turning tool – for longitudinal turning and facing
25×25 mm indexable turning tool for an SNMG insert
Turning tool PSSNR 25X25-12 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 45° allows simultaneous longitudinal turning and angled facing.
In the lever clamping system (P), the lever presses the SNMG 1204rr insert against the pocket walls through its hole. The negative geometry of the 90° square insert with 8 cutting edges is well suited to roughing and medium machining, providing high cutting edge strength and cost efficiency thanks to its double-sided design. The turning tool is compatible with SNMG 12 inserts in various carbide grades — select the grade to match the workpiece material.
Decoding the PSSNR designation of the PSSNR 25X25-12 turning tool
What the individual letters in the ISO designation mean
Decoding the designation PSSNR
P
CLAMPING
Lever/pin (P)
Clamping through the insert hole — quick replacement
S
INSERT SHAPE
Square 90° 90°
SNMG insert — negative, double-sided, 8 edges (4 per side)
S
ENTERING ANGLE
κr = 45°
Turning + facing — 45° angle (square)
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: SNMG 1204rr
Typical applications of the PSSNR 25X25-12 turning tool
Cutting operations:
| ▸ | Longitudinal turning with facing — the 45° angle allows simultaneous cutting along the axis and facing |
| ▸ | Roughing and medium machining — negative SNMG geometry provides a stronger cutting edge |
| ▸ | Chamfering and external tapers — the 45° angle corresponds to a 45° chamfer |
| ▸ | Turning steps and shoulders — machining cylindrical surfaces with changes in diameter |
| ▸ | CNC production runs — quick insert replacement and repeatable positioning |
Included
PSSNR 25X25-12 package contents
Package contents:
| ✓ | Tool body PSSNR 25X25-12 | 1 pcs |
| ✓ | Pin and clamping lever | 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.
Installing and replacing the insert in the PSSNR 25X25-12 turning tool
Instructions for lever clamping (P)
Insert replacement procedure step by step
1 Loosen the lever
Unscrew the lever screw 2-3 turns
2 Clean the insert seat
Remove chips and debris
3 Install the insert
Fit the hole over the pin
4 Tighten the lever
Torque 1.5–2.5 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 — PSSNR 25X25-12
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 entering angle of 45° allows simultaneous longitudinal turning and facing at 45°. Suitable for machining chamfers, tapers and transitions between diameters.
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
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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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