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BEYOND TTER2020-5T25 External Grooving & Parting Tool Holder (Metric 20x20mm / Inch 3/4" Shank Equivalent)
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KGMR1616H-2T17 Grooving Lathe Tool – Precision and Efficiency Combined
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BEYOND Multi-Functional Grooving Tools — External Grooving, Face Grooving & Parting Toolholders for CNC Lathe
BEYOND Multi-Functional External Machining Tools — Square-Shank Tool Holders for External Grooving, Face Grooving, Shallow Grooving, and Parting Operations with Multiple Clamping Systems (Screw-Clamp, Multi-Lock, Double Clamp)
Browse the BEYOND Multi-Functional Tools for External Machining collection — Square-shank tool holders for external grooving, face grooving, shallow grooving, and parting with multiple clamping systems for diverse lathe operations.
Browse the full KTGFR BEYOND catalog, or jump to: About · Featured Holders · All Specifications · Fastening Modes · Approach Angles · Insert Shapes · Shank Lengths · FAQ.
⚠️ Required: 0° Negative Relief Carbide Inserts (TN INSERT)
Per ISO 1832 nomenclature: the letter "N" in Position 4 of the tool holder code designates 0° negative relief — the strongest cutting edge geometry, used for heavy roughing and interrupted cuts. Per ISO 1832, the 2-letter prefix for the matching insert family is TN (NOT TC — that prefix means positive 7° relief inserts which will not seat correctly on this holder).
Compatible inserts (ISO 1832 "TN" negative family): TNMG / TNMM / TNGA / TNMX (T-shape, 0° negative, ISO 1832).
Why this matters: A negative-relief insert (e.g. TNMG) has its cutting edge set at 0° clearance, giving the strongest cutting edge for heavy roughing. A positive-relief insert (e.g. TCMT) has 7° clearance, giving a sharper but weaker edge — these are different insert families per ISO 1832. Pairing a negative-insert holder (TN INSERT = this catalog) with positive-relief inserts (TC family like TCMT) causes insert-pocket mismatch, chatter, premature wear, and insert breakage risk. Always verify Position 4 = "N" matches your insert series.
BEYOND-Original Tool Holders from Hangzhou, China
All 250 tool holders in this catalog are 100% genuine BEYOND — manufactured by BEYOND in Hangzhou, China. Each holder is CNC-machined from premium alloy steel (DIN 1.3343 / AISI M2 equivalent), heat-treated to HRC 60-62, and precision-ground for shank and pocket tolerances within ±0.01mm. Every tool holder follows the BEYOND 9-position code structure: a 5-letter prefix identifying fastening mode, insert shape, approach angle, relief angle, and hand direction, followed by a 4-digit shank spec identifying shank height, width, total length, and insert IC code.
About BEYOND Multi-Functional Grooving Tools — External Grooving, Face Grooving & Parting Toolholders for CNC Lathe
BEYOND Multi-Functional External Machining Tools — Square-Shank Tool Holders for External Grooving, Face Grooving, Shallow Grooving, and Parting Operations with Multiple Clamping Systems (Screw-Clamp, Multi-Lock, Double Clamp)
This catalog contains 13 unique BEYOND tool holder specifications across 4 fastening modes, 1 insert shape, 5 approach angles, 1 relief angle, and 2 hand configurations.
BEYOND 9-Position Tool Holder Code Structure (per official catalog diagram):
| Position | Symbol | Meaning |
|---|---|---|
| 1 | A · C · D · M · P · S · W | Fastening mode — A = back clamping; C = top clamp with pressure plate; D = dual clamping (top + side); M = strong / heavy-duty multi-point clamping; P = pin / slot-lever clamping; S = central screw clamping (ISO standard, most common); W = wedge clamping. |
| 2 | C · D · R · S · T · V · W | Insert shape (ISO 1832) — 7 shape families. C = 80° Quadrilateral (CCMT/CCGT positive OR CNMG/CNMM negative); D = 55° Quadrilateral (DCMT/DCGT positive OR DNMG/DNMM negative); R = Round (RCMT/RCGT or RPMT/RPGX); S = Square (SCMT/SCGT positive OR SNMG/SNMM negative); T = 60° Triangle (TCMT/TCGT positive OR TNMG/TNMM negative); V = 35° Quadrilateral (VCMT/VCGT/VBMT/VBGT positive OR VNMG/VNMM negative); W = Hexagon (WNMG/WCMX). Per ISO 1832, the sub-menu family prefix = shape letter + relief letter: DCMT = "DC", DNMG = "DN", CCMT = "CC", CNMG = "CN", etc. |
| 3 | A · B · C · D · E · F · G · H · J · K · L · M · N · P · Q · R · S · T · U · V · W · Y | Approach angle — A = 90°; B = 75°; C = 90° (45° secondary); D = 45° (60° secondary); E = 60°; F = 90°; G = 45° (90° secondary); H = 107.5°; J = 93°; K = 75°; L = 95° (90° secondary); M = 86° (extended); N = 63°; P = 117.5°; Q = 45° (extended); R = 75°; S = 45°; T = 45° (60° secondary); U = 93°; V = 72.5°; W = 50°; Y = 85°. |
| 4 | B · C · D · E · N · P | Relief angle — B = 5° positive; C = 7° positive (standard, most common); D = 15° positive; E = 20° positive; N = 0° (negative insert, heavy roughing); P = 11° positive. |
| 5 | L · N · R | Hand direction — L = Left-hand; N = No direction (universal, both hands); R = Right-hand. |
| 6 | 20 / 25 / 32 / ... | Shank height (mm) — 2-digit numeric, common values 12, 16, 20, 25, 32 mm. |
| 7 | 20 / 25 / 32 / ... | Shank width (mm) — 2-digit numeric, matches height for square shanks. |
| 8 | A · B · C · D · E · F · G · H · J · JX · K · L · M · N · P · Q · R · S · T · U · V · W · X · Y | Shank total length code — K = 125 mm (standard, most common); H = 100 mm; M = 150 mm; P = 170 mm; full range 32-500 mm plus X = special / custom. |
| 9 | 07 · 08 · 09 · 11 · 12 · 16 · 19 · 22 · 25 | Insert IC code — 2-digit numeric where 07 = 6.35 mm IC, 09 = 9.525 mm IC, 12 = 12.7 mm IC, 16 = 15.875 mm IC, 19 = 19.05 mm IC, 25 = 25.4 mm IC. |
Examples:
- DCLNR2020K12 = D(dual clamping) + C(80° Quadrilateral / CCMT family) + L(95° approach angle) + N(0° negative relief) + R(Right-hand), shank 20×20 mm standard length 125 mm, IC 12.7 mm.
- SVJCR2525M16 = S(central screw) + V(35° Quadrilateral / VCMT-VBMT insert) + J(93° approach angle) + C(7° positive relief) + R(Right-hand), shank 25×25 mm long 150 mm, IC 15.875 mm.
- SRGCR1212H09 = S(central screw) + R(Round insert / RCMT) + G(45° approach angle with 90° secondary) + C(7° positive relief) + R(Right-hand), shank 12×12 mm short 100 mm, IC 9.525 mm.
BEYOND tool holders are fully interchangeable with all major carbide insert brands per ISO 1832 (insert shape) and ISO 5608 (insert pocket). Inserts from Sandvik, Kyocera, Mitsubishi, Sumitomo, Korloy, ZCC.CT, Walter, Iscar and other leading manufacturers all fit BEYOND holders with matching 5-letter codes. Each holder ships with a Torx-key or pin wrench and factory calibration certificate.
Featured BEYOND KTGFR Tool Holders
Twelve representative BEYOND specifications from our 250-SKU KTGFR catalog:
BEYOND KTGFR2525M16 Right-Hand Indexable Shallow Grooving Toolholder | 25x25mm (1" x 1" Square Shank) CNC Lathe Cutter Body Compatible with Kyocera Style TGF32R Inserts (Triangular Pocket Face Slotting System)
KTGFR — Fastening mode K; Regular triangle 60°.
45° approach angle (90° secondary); Relief angle F°; Right-hand.
BEYOND CGBR1616H43 Right-Hand Indexable External Grooving Toolholder | 16x16mm (5/8" x 5/8" Square Shank) CNC Lathe Cutter Body Compatible with Kyocera Style GB43R Inserts (Heavy Duty Radial Slotting System)
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BEYOND CTGFR1212H16 Right-Hand Indexable Shallow Grooving Toolholder | 12x12mm (1/2" x 1/2" Square Shank) CNC Lathe Cutter Body Compatible with Kyocera Style TGF32R Inserts (Triangular Pocket Face Slotting System)
CTGFR — Top clamp with pressure plate; Regular triangle 60°.
45° approach angle (90° secondary); Relief angle F°; Right-hand.
BEYOND MGEHL2020-1.5 Left-Hand Indexable External Grooving Toolholder | 20x20mm (3/4" x 3/4" Square Shank) CNC Lathe Cutter Body Compatible with MGMN150 Inserts (1.5mm Narrow Cut Width)
MGEHL — Strong / heavy-duty clamping; Insert shape G.
60° approach angle; Relief angle H°; Left-hand.
BEYOND DGTR1616-3T20 Right-Hand Indexable External Grooving Toolholder | 16x16mm (5/8" x 5/8" Square Shank) CNC Lathe Cutter Body Compatible with ISCAR DGN3002 Inserts (3mm Width, 20mm Max Depth)
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BEYOND QEFD2525R17-3 Right-Hand Indexable External Face Grooving Toolholder | 25x25mm (1" x 1" Square Shank) CNC Lathe Cutter Body Compatible with ZCC ZTFD0303 Inserts (3mm Width, 17mm Max Axial Depth)
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BEYOND KGMR2525-2T17 Right-Hand Indexable External Grooving & Parting Toolholder | 25x25mm (1" x 1" Square Shank) CNC Lathe Cutter Body Compatible with Kyocera GMM2020 Inserts (2mm Width, 17mm Max Depth)
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BEYOND MGEHR2525-1.5 Right-Hand Indexable External Grooving & Parting-Off Toolholder | 25x25mm (1" x 1" Square Shank) CNC Lathe Cutter Body Compatible with MGMN150 / MRMN150 Inserts (1.5mm Ultra-Narrow Cut Width)
MGEHR — Strong / heavy-duty clamping; Insert shape G.
60° approach angle; Relief angle H°; Right-hand.
BEYOND SGIVFR Internal Grooving & Threading Boring Bar Series (SGIVFR10-K11, SGIVFR12-K11, SGIVFR16-N16, SGIVFR20-Q16) | 10mm to 20mm (0.394" to 0.787" Shank) Internal Cut-Off, Facing, & ID Grooving Tool Body for GIV/GIR Indexable Carbide Inserts
SGIVF — Central screw clamping; Insert shape G.
Approach angle code I; Relief angle V°; Hand F.
BEYOND PTXNR1016-X33N PTXNR1216-X33N PTXNR1616-X33N PTXNR 1016 1616 Turning Toolholder Radial
PTXNR — Pin / slot-lever clamping; Regular triangle 60°.
Approach angle code X; 0° relief (negative insert, strongest for heavy roughing); Right-hand.
View All 250 BEYOND Tool Holders →
All Specifications — Organized by Insert Shape (Position 2)
This catalog spans 13 unique 5-letter BEYOND tool holder specifications with 250 total SKUs, organized by insert shape per Position 2:
Position 2 = "G" — Code G (170 SKUs across 6 specifications)
The letter "G" in Position 2 designates code g geometry. Holders with this code accept matching insert family per ISO 1832.
- MGEHR — 60° approach angle; Relief angle H°; Right-hand · 63 SKUs
- MGEHL — 60° approach angle; Relief angle H°; Left-hand · 34 SKUs
- MGEVR — 60° approach angle; Relief angle V°; Right-hand · 32 SKUs
- MGEVL — 60° approach angle; Relief angle V°; Left-hand · 31 SKUs
- CGWSR — 50° approach angle; Relief angle S°; Right-hand · 9 SKUs
- SGIVF — Approach angle code I; Relief angle V°; Hand F · 1 SKU
Position 2 = "T" — Regular triangle 60° (13 SKUs across 7 specifications)
The letter "T" in Position 2 designates regular triangle 60° geometry. Holders with this code accept TCMT / TCGT / TCET family (positive, C-pattern hole) per ISO 1832.
- CTGFR — 45° approach angle (90° secondary); Relief angle F°; Right-hand · 4 SKUs
- CTGFL — 45° approach angle (90° secondary); Relief angle F°; Left-hand · 3 SKUs
- CTPAR — 117.5° approach angle; Relief angle A°; Right-hand · 2 SKUs
- KTGFR — 45° approach angle (90° secondary); Relief angle F°; Right-hand · 1 SKU
- PTXNR — Approach angle code X; 0° relief (negative insert, strongest for heavy roughing); Right-hand · 1 SKU
- KTKFR — 75° approach angle; Relief angle F°; Right-hand · 1 SKU
- KTGFL — 45° approach angle (90° secondary); Relief angle F°; Left-hand · 1 SKU
Fastening Mode Reference (Position 1)
Per the BEYOND official diagram, Position 1 of the 5-letter code designates the fastening mode — how the carbide insert is locked into the tool holder pocket. This catalog uses 4 fastening modes:
| Pos 1 Code | Fastening Mode | Best For | Holder SKUs |
|---|---|---|---|
| M | Strong / heavy-duty clamping (multi-point clamp with high clamping force for interrupted cuts) | Strong multi-point clamping — highest clamping force for heavy roughing | 160 |
| C | Top clamp with pressure plate (clamp presses insert from above via a pressure plate — common economical clamp) | Economical top clamp with pressure plate — single top screw for high-volume production | 18 |
| S | Central screw clamping (single central screw through insert hole — ISO standard screw-clamp) | Universal ISO standard screw-clamp — most common; works with all insert shapes; easy insert indexing | 1 |
| P | Pin / slot-lever clamping (side lever locks insert; no insert-hole required) | Pin / slot-lever clamping — for inserts without hole, economical | 1 |
Approach Angle Reference (Position 3)
Position 3 designates the approach angle — the angle between the insert cutting edge and the workpiece surface. This catalog uses 5 approach angles:
| Pos 3 Code | Approach Angle | Best For | Holder SKUs |
|---|---|---|---|
| E | 60° approach angle | Profiling and turning close to shoulders | 160 |
| G | 45° approach angle (90° secondary) | Profiling and finishing — strong edge but reduced clearance | 9 |
| W | 50° approach angle | Profiling and finishing — strong edge but reduced clearance | 9 |
| P | 117.5° approach angle | Shoulder turning / facing — high clearance, side-machining flexibility | 2 |
| K | 75° approach angle | General external turning — balanced strength and clearance | 1 |
Insert Shape Reference (Position 2 / ISO 1832)
Position 2 designates the insert shape per ISO 1832. This catalog uses 1 insert shape:
| Pos 2 Code | Insert Shape (ISO 1832) | Compatible Insert Family | Holder SKUs |
|---|---|---|---|
| T | Regular triangle 60° — TCMT / TCGT / TCET family (positive, C-pattern hole) | TCMT / TCGT / TCET (60° triangle with hole, C-pattern) | 13 |
Relief Angle Reference (Position 4)
Position 4 designates the relief (clearance) angle. This catalog uses 1 relief angle:
| Pos 4 Code | Relief Angle | Insert Type | Holder SKUs |
|---|---|---|---|
| N | 0° relief (negative insert, strongest for heavy roughing) | Negative insert — strongest cutting edge, for heavy roughing | 1 |
Shank Total Length Reference (Position 8)
Position 8 designates the shank total length in millimetres via a single-letter code. This catalog uses 3 length codes:
| Pos 8 Code | Shank Total Length | Holder SKUs |
|---|---|---|
| H | 100 mm | 4 |
| M | 150 mm (most common) | 3 |
| K | 125 mm (standard length — most common) | 2 |
How to Choose the Right BEYOND Tool Holder (9-Position Code Decision Tree)
Selecting the correct BEYOND tool holder follows the 9-position code in sequence per the official catalog:
- Position 1 — Fastening mode: S = central screw (ISO standard, most common for screw-clamp holders); C = top clamp with pressure plate (economical); D = dual clamping (top + side); M = strong multi-point clamping (heavy roughing); P = pin / slot-lever clamp (no insert hole); A = back clamping; W = wedge clamping.
- Position 2 — Insert shape (ISO 1832): Match your insert series — C 80° rhombic (CCMT/CCGT family), D 55° rhombic (DCMT/DCGT), R round (RCMT for 70° countersink or RPMT for 90° countersink), S square (SCMT/SCGT), T triangle (TCMT/TCGT), V 35° rhombic (VCMT/VCGT + VBMT/VBGT), W hexagon (WNMG/WCMX).
- Position 3 — Approach angle: F 90°; G 45°; J 93°; L 95°; H 107.5°; P 117.5°; A 90°; B/K/R 75°; D/S/T/Q 45°; E 60°; N 63°; V 72.5°; U 93°; W 50°; Y 85°. Choose by shoulder clearance / profiling depth.
- Position 4 — Relief angle: C 7° (standard, most common); B 5°; D 15°; E 20°; N 0° (negative, heavy roughing); P 11° (positive, finishing).
- Position 5 — Hand: R Right-hand (most common); L Left-hand; N No direction (universal, both hands).
- Positions 6-7 — Shank height × width (mm): 1212 / 1616 / 2020 / 2525 / 3232 etc. For 12-station CNC lathes use 1212 or 1616; for heavy-duty lathes use 2525 or 3232.
- Position 8 — Shank total length code: K 125 mm (standard, most common); H 100 mm (short); M 150 mm (long); P 170 mm (extra long); full range 32-500 mm.
- Position 9 — Insert IC code: 07 = 6.35 mm, 09 = 9.525 mm, 12 = 12.7 mm, 16 = 15.875 mm, 19 = 19.05 mm, 25 = 25.4 mm.
Tip: All BEYOND tool holders are interchangeable with leading carbide insert brands per ISO 1832 (insert shape) and ISO 5608 (insert pocket). Inserts from Sandvik, Kyocera, Mitsubishi, Sumitomo, Korloy, ZCC.CT, Walter and Iscar all fit matching BEYOND holders.
Frequently Asked Questions
Are these genuine BEYOND original tool holders?
Yes — all 250 products in this catalog are 100% genuine BEYOND originals. Each holder is CNC-machined, heat-treated to HRC 60-62, and precision-ground at BEYOND's Hangzhou facility with full factory traceability. Every product is named according to the BEYOND official 9-position code structure documented in their catalog.
What does the BEYOND 9-position tool holder code mean?
Per the BEYOND catalog, the 9-position tool holder code identifies, in order: (1) Fastening mode — 7 types including S = central screw (most common), C = top clamp with pressure plate, D = dual clamping, M = strong multi-point clamping, P = pin/slot-lever clamp, A = back clamping, W = wedge clamping; (2) Insert shape (ISO 1832) — 7 shapes including C=80° rhombic, D=55° rhombic, R=round, S=square 90°, T=triangle 60°, V=35° rhombic, W=hexagon; (3) Approach angle — 22 letters covering 45° to 117.5° (A=90°, F/G=90°, J/U=93°, L=95°, H=107.5°, P=117.5°, etc.); (4) Relief angle — 6 angles (B=5°, C=7° standard, D=15°, E=20°, N=0°, P=11°); (5) Hand direction — L=left, R=right, N=no direction; (6) Shank height (mm); (7) Shank width (mm); (8) Shank total length code (K=125 mm standard, H=100 mm short, M=150 mm long, etc.); (9) Insert IC code (07=6.35 mm, 12=12.7 mm, 16=15.875 mm, etc.).
Are BEYOND tool holders compatible with other brands of carbide inserts?
Yes — BEYOND tool holders conform to ISO 1832 (insert shape) and ISO 5608 (insert pocket) standards, making them fully interchangeable with all major carbide insert brands including Sandvik, Kyocera, Mitsubishi, Sumitomo, Korloy, ZCC.CT, Walter, and Iscar. As long as the insert matches the holder's 9-position code (especially Position 2 = shape), it fits.
What shank sizes are available?
BEYOND tool holders are available in shank sizes from 1212H07 (12mm × 12mm short) through 3232P22 (32mm × 32mm extra long). Common sizes include 1212H07, 1212H11, 1616H07, 2020K16, 2525M11, 2525M16, and 3232P22. The format is AABB + length code + IC code, e.g. 2020K12 = 20×20 mm shank, 125 mm length, 12.7 mm insert IC.
What is the difference between R (right-hand) and L (left-hand) holders?
Right-hand (R) holders are the most common, used for standard lathe spindle rotations. Left-hand (L) holders are used on lathes with reverse spindle rotation or for special profiling applications. No-direction (N) holders can be used in both directions but with reduced rigidity.
How do BEYOND tool holders compare to Sandvik / Kyocera?
BEYOND tool holders match the ISO 1832/ISO 5608 dimensional specifications of leading global brands including Sandvik and Kyocera, at significantly lower price points. The premium alloy steel substrate (DIN 1.3343 equivalent) and HRC 60-62 heat treatment ensure equivalent rigidity and clamping force for production CNC turning environments.
What's the difference between S (screw) and M (multi-point) clamping?
Per BEYOND's catalog, the letter S at Position 1 designates a central screw clamp (the ISO standard screw-clamp, most common for general external turning) — the screw passes through the insert hole and threads into the holder pocket. The letter M at Position 1 designates a strong multi-point clamp (M-type) — multiple clamping points for the highest clamping force, ideal for heavy roughing and interrupted cuts.
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Related BEYOND Tool Holder Families
KTGFR — Current
This collection with all 250 SKUs.
Explore BEYOND Multi-Lock Holder Catalog
Browse the full BEYOND multi-lock external tool holder line by insert shape (per ISO 1832), or jump to other BEYOND tool resources:
All BEYOND Multi-Lock System External Holders
Top-level root for the Multi-Lock (Strong Multi-Point Clamping) external tool holder lineup across all 7 insert shapes (C/D/R/S/T/V/W).
TN INSERT — 60° Triangle (Negative)
ISO 1832 TNMG (and TNGT, TNGA, TNMX) family — 0° negative relief inserts. Heavy roughing, interrupted cuts. Insert catalog page: pending setup (no URL yet).
TC INSERT — 60° Triangle (Positive Sister)
ISO 1832 TCMT family (7° positive relief inserts) — same shape geometry but positive insert clearance. Screw-clamp holders for light/medium cutting.
CC INSERT — 80° Rhombic (Positive)
CCMT / CCGT / CCET inserts with C-hole (70° countersink) — 80° quadrilateral positive-relief inserts. Largest BEYOND screw-clamp family — 95 SKUs.
DC INSERT — 55° Rhombic (Positive)
DCMT / DCGT / DCET inserts — 55° quadrilateral positive-relief. For profiling and finishing where a sharper geometry is preferred.
SC INSERT — Square 90° (Positive)
SCMT / SCGT / SCET square inserts — for facing and 90° shoulder work.
TC INSERT — Triangle 60° (Positive)
TCMT / TCGT / TCET triangular inserts — for profiling and high-feed turning.
VC VB INSERT — 35° Rhombic (Positive)
VCMT / VCGT + VBMT / VBGT inserts — for profiling and copy-turning on small diameters.
RP INSERT — Round (90° hole)
RPMT / RPGX round inserts with P-hole (90° countersink) — for heavy-duty profiling and roughing.
RC INSERT — Round (70° hole)
RCMT / RCGX round inserts with C-hole (70° countersink) — general-purpose round insert turning.
BEYOND Master Catalog
Complete BEYOND tool holder lineup across external, boring, threading, and grooving applications — plus BEYOND carbide inserts.
All BEYOND + OYYU Products
Full combined catalog: BEYOND house brand + OYYU brand + Mitsubishi / Kyocera / Sandvik / Sumitomo / Korloy / Taegutec / Walter / Iscar / Tungaloy / ZCC.CT inserts.
BEYOND is a registered trademark of Super Industrial Trading Co., Ltd, Hangzhou, China. All tool holders are named according to the BEYOND official 9-position code structure (per official catalog diagram) referencing ISO 5608 / DIN 4988 / ISO 1832 international standards. Distributed by cnchome-beyond.com.