CNC Insert & Tool Holder Selector

Find compatible tool holders for any carbide insert, or get insert recommendations by material. 192 OYYU holders in stock, ISO 1832 / 5608 compliant. Free.

πŸ”„ Bidirectional πŸ“ ISO 1832 / 5608 πŸ”§ 192 OYYU Holders ⚑ Instant πŸ“¦ DHL 3-7 days

Find OYYU Compatible Holders for Your Insert

Enter any ISO 1832 insert (e.g. CNMG120408). Partial matches work β€” even CNMG or just C.

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OYYU Compatible Tool Holders

All ISO 5608 compliant. OYYU stocks these in Hangzhou, DHL 3-7 day worldwide.

Get OYYU Insert & Holder Recommendation by Material

Tell us what you're machining. We'll recommend OYYU insert + grade + holder + cutting parameters.

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Recommended Tool Holder βœ“ OYYU Stock
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OYYU stocks all ISO 5608 holders shown. Send us your part drawing or RFQ β€” reply within 24 hours. DHL 3-7 days worldwide.
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How Insert & Holder Compatibility Works

Every indexable CNC turning system has two parts: the carbide insert (cutting edge) and the tool holder (steel body). For them to work together, they must share three dimensions: shape (1st char: C/D/T/V/W/S/R), inscribed circle (IC) in 1/16" (5-6th chars: 08/12/16/19/25), and thickness in mm (6th char: 04/06/08).

ISO 1832 Insert Code (7 chars) β€” Quick Decode

Example: CNMG120408 = C 80Β° rhombic Β |Β  N 0Β° relief Β |Β  M medium tolerance Β |Β  G chipbreaker both sides Β |Β  12 IC=12.7mm (1/2") Β |Β  04 4.76mm thick Β |Β  08 0.8mm corner radius.

Common shapes: C=80Β° rhombic (general), D=55Β° rhombic (high feed), T=60Β° triangle (profiling), V=35Β° rhombic (contour), W=trigon 80Β° (multi-edge), S=90Β° square (shoulder), R=round (heavy roughing).

ISO 5608 Holder Code (7 chars) β€” Quick Decode

Example: DCLNR 2020K R = D Double clamp Β |Β  C 80Β° approach Β |Β  L 0Β° lead Β |Β  N standard tolerance Β |Β  R right-hand Β |Β  2020 20Γ—20mm shank Β |Β  K 125mm length.

Holder fixing: D=double clamp (rigid), P=pin lock (fast change), M=multi-lock, S=screw clamp (compact). The 2nd char = insert shape; R/L suffix = right/left hand.

Common pitfall: the 2nd letter is the insert shape. So DWLNR is a W (trigon) holder for WNMG, not for CNMG. CNMG requires DCLNR/MCLNR/PCLNR (the 2nd letter must be C).

Common Compatibility Mistakes

  • Wrong IC. Forcing 12.7mm insert into 15.875mm pocket causes shifting and catastrophic failure.
  • Mixed shapes. CNMG and DNMG both rhombic but 80Β° vs 55Β° β€” not interchangeable.
  • Wrong hand. R-hand tool used where L-hand needed causes chip-flow issues.
  • Thickness error. Undersized insert moves; oversized won't clamp and may crack holder.

Frequently Asked Questions

What does CNMG stand for?
ISO 1832 designation: C=80Β° rhombic, N=0Β° relief angle, M=medium tolerance, G=chipbreaker on both faces. The 6 digits after give size: 120408 = IC 12.7mm, thickness 4.76mm, corner 0.8mm.
What is the most common insert size?
CNMG120408 β€” 12.7mm IC, 4.76mm thick, 0.8mm corner. The workhorse for general turning on steel, stainless, and cast iron.
Why does my CNMG lookup show DWLNR, MCLNR, and PCLNR?
All three are valid ISO 5608 holders for CNMG 80Β° rhombic inserts. DWLNR (double clamp) is most rigid; PCLNR (pin lock) is fastest to change; MCLNR (multi-lock) balances both. The 2nd letter C in each = C-shape compatibility.
What does R at the end of a holder code mean?
R = Right-hand (cutting edge approaches from the right toward the chuck). L = Left-hand for back-turning. Most production uses R.

About BEYOND & OYYU

BEYOND and OYYU are precision cutting tool brands from Super Industrial Trading Co., Ltd (Hangzhou, China). 13+ years OEM/ODM for Mitsubishi / Kyocera / Sandvik / Korloy / Sumitomo / Walter / Tungaloy specs. 192 ISO 5608 tool holders in stock (7 shapes x M/D/P/S clamp types x external/internal), HS Code 8209 documentation, DHL 3-7 day worldwide.