Kyocera TNMG220408 CA125P TMK00231

Name: Kyocera TNMG220408 CA125P TMK00231 Turning Insert - General Turning
Brand: Kyocera
Price: 6.11 USD
Availability: InStock

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Kyocera TNMG220408 CA125P TMK00231

$6.11 USD

$10.19 USD

1 or more $6.11 USD

Stock: In Stock
Model: CA125P
Weight: 0.10kg
Manufactured: In Japan
Ships: Worldwide
Item Code: TMK00231

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Product Overview

The Kyocera TNMG220408 CA125P TMK00231 is a premium turning insert engineered for general turning operations in modern CNC turning centers. Manufactured in Japan to exacting ISO 1832 standards, this triangular insert delivers exceptional dimensional accuracy, superior surface finish, and extended tool life across a broad spectrum of ferrous and non-ferrous workpiece materials.

Featuring a negative insert design with optimized chipbreaker geometry, the TNMG220408 ensures stable chip evacuation even at elevated cutting parameters. The CA125P grade substrate combines a ultra-fine tungsten carbide base with a multi-layer TiAlN PVD coating, offering an optimal balance between wear resistance and mechanical toughness for continuous and light interrupted cuts.

ISO Designation Breakdown

The TNMG220408 designation follows the ISO 1832:2004 standard for indexable inserts. Each alphanumeric segment conveys critical geometric and tolerance information:

ISO Code	Meaning	Specification
T	Insert Shape	Triangular (60°)
N	Relief Angle	0° (Negative)
M	Tolerance Class	±0.005–0.13 mm
G	Insert Type	With Hole + Countersink
16/22	Inscribed Circle	16 = 9.525 mm / 22 = 12.7 mm
04/08/12/16	Thickness	4.76 / 6.35 / 7.94 / 9.52 mm
04/08/12/16	Nose Radius	0.4 / 0.8 / 1.2 / 1.6 mm

Engineering Dimensions & Geometry

Parameter	Value	Tolerance
Inscribed Circle (IC)	12.7 mm	±0.025 mm
Insert Thickness (S)	4.76 mm	±0.13 mm
Nose Radius (R)	0.8 mm	±0.05 mm
Relief Angle	0° (Negative)	—
Inscribed Circle Tolerance	M-class (±0.05–0.13 mm)	—
Chipbreaker Width	0.8–1.4 mm (geometry dependent)	±0.05 mm
Hole Diameter	4.4 mm (size 16) / 5.5 mm (size 22)	+0.1 mm
Countersink Angle	60° / 90° (double for TNMM)	±2°

Grade Details – Key Grade Characteristics

The CA125P grade is a PVD-coated carbide specifically developed for high-performance steel and stainless steel machining. Its ultra-fine grain structure (0.8 μm WC) provides exceptional edge sharpness and coating adhesion.

Property	CA125P Specification
Substrate	PVD-Coated Carbide
Coating	TiAlN Multi-layer PVD
Hardness	1,600 HV
Transverse Rupture Strength	3,200 MPa
Application Range	Steel (P10–P30), Stainless Steel (M10–M20)
Max Cutting Temp	900°C

Grade Comparison Matrix

Select the optimal grade based on your specific machining requirements. The matrix below compares CA125P against other popular Kyocera grades in the same application family:

Grade	Speed Capability	Wear Resistance	Toughness	Best For
CA125P	★★★★☆	★★★★☆	★★★☆☆	High-speed steel finishing
CA115P	★★★★★	★★★★★	★★☆☆☆	Ultra-high-speed finishing
CA135P	★★★☆☆	★★★☆☆	★★★★☆	Interrupted cuts / roughing
PR1535	★★★★☆	★★★★☆	★★★☆☆	Stainless steel machining

Chipbreaker Profile

TNMG220408 Chipbreaker Geometry: General purpose chipbreaker with versatile geometry for balanced chip control and edge strength.

Land Width: Optimized for general turning feed rates
Groove Depth: 0.15–0.25 mm (ensures controlled chip curl)
Rake Angle: 15°–18° (reduces cutting forces and heat generation)
Edge Preparation: Honed T-land (0.05–0.10 mm) for edge stability

Recommended Applications & Workpiece Materials

The TNMG220408 CA125P is ideally suited for the following material groups and industrial sectors:

Carbon Steels: C35, C45, C60 — excellent for automotive shafts and general engineering components
Alloy Steels: 42CrMo4, 16MnCr5, 20MnCr5 — ideal for gear blanks and transmission parts
Stainless Steels: AISI 304, 316, 410 — suitable for food processing and medical equipment machining
Tool Steels: H13, D2, O1 — recommended for die and mold manufacturing
Cast Irons: GG25, GGG40 — proven performance in pump housings and valve bodies
Free-Cutting Steels: 11SMn30, 11SMnPb30 — optimized for high-speed Swiss-type lathe operations

Application Map by Operation

Use the following compatibility matrix to match the TNMG220408 with your specific turning operation:

Operation Type	Suitability	Recommended Feed	Notes
External Turning	★★★★★	0.10–0.35 mm/rev	Primary application
Internal Turning	★★★★☆	0.08–0.25 mm/rev	Use with appropriate boring bar
Face Turning	★★★★☆	0.12–0.30 mm/rev	Excellent chip evacuation
Profiling	★★★☆☆	0.05–0.15 mm/rev	Limited by nose radius
Grooving	★☆☆☆☆	Not recommended	Use dedicated grooving inserts

Recommended Cutting Conditions

The following parameters serve as starting recommendations. Fine-tune based on machine rigidity, coolant delivery, and workpiece condition:

Workpiece Material	Cutting Speed (m/min)	Feed Rate (mm/rev)	Depth of Cut (mm)
Carbon Steel (C45)	180–250	0.15–0.35	0.5–3.0
Alloy Steel (42CrMo4)	150–220	0.12–0.30	0.5–2.5
Stainless Steel (304)	120–180	0.10–0.25	0.5–2.0
Tool Steel (H13)	100–150	0.08–0.20	0.3–1.5
Cast Iron (GG25)	200–280	0.20–0.40	1.0–4.0

Operating Guidelines

Coolant: Use high-pressure coolant (≥70 bar) directed at the cutting edge for optimal chip breaking and heat dissipation.
Tool Overhang: Minimize overhang to ≤4× toolholder shank diameter to prevent vibration and chatter.
Insert Position: Ensure the insert sits flush in the pocket; verify seating with a torque-calibrated key (recommended 3.5 N·m).
Edge Wear Monitoring: Inspect flank wear (VB) every 15–20 min. Retire insert when VB exceeds 0.3 mm or crater wear reaches 0.15 mm.
Speed Ramp: Start at the lower end of the recommended speed range and increase in 10% increments while monitoring tool life.
Workpiece Runout: Maintain runout ≤0.02 mm to avoid uneven load distribution and premature edge chipping.
Storage: Store inserts in original packaging away from corrosive atmospheres. Avoid mixing used and new inserts.

Toolholder Compatibility

The TNMG220408 is compatible with standard 60° triangular negative-type toolholders. Verify pocket geometry and clamping mechanism before ordering:

Toolholder Series	Compatible Size	Clamping Type	Application
MTJNR/L	16/22 mm	Lever Lock	External turning
STFCR/L	16/22 mm	Screw Clamp	External finishing
DTJNR/L	16/22 mm	Lever Lock	Heavy roughing
WTJNR/L	22 mm	Lever Lock	Large component turning
S16Q/S22Q-MTJNR/L	16/22 mm	Lever Lock	Internal turning

Packaging & Ordering Information

All genuine Kyocera inserts are shipped in manufacturer-original packaging with full traceability:

Attribute	Details
Packaging Type	Individual plastic pocket + anti-corrosion oil
Quantity per Pack	10 inserts
MPN (Manufacturer Part Number)	TMK00231
Barcode	EAN-13 compliant
Weight per Insert	Approx. 4.2 g (size 16) / 7.8 g (size 22)
Storage Conditions	Dry environment, 15–25°C, avoid direct sunlight

Catalog Meta Data

Technical reference and traceability information for procurement and inventory management:

Field	Value
Product Line	Kyocera Turning Insert Series
Catalog Year	2026
Revision	Rev. 3.2
Page Reference	Turning Catalog p. 142–158
ISO 1832 Classification	TNMG220408 CA125P
Country of Manufacture	Japan
Warranty	12 months manufacturer defect coverage

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In-stock items (在庫あり): Dispatched with precision from the nearest regional hub within 3 business days.
Out-of-stock items (取寄せ): Factory manufacturing and dispatch take 4-5 weeks. Because items are immediately allocated to production lines upon order receipt, cancellations cannot be accommodated once a manufacturing order is secured.
Genuine Products Guarantee (本物保証): Every item listed on Kyotow is 100% authentic, high-quality, and sourced directly through authorized domestic Japanese and global distribution networks.

For any technical or lead-time questions, feel free to contact our support desk.

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To guarantee absolute accuracy for your machining requirements, please cross-reference the exact Kyocera Item Code, Item Name, and Material Grade.

🔹How to Proceed with Your Purchase:

Use the official Kyocera Item Code and Grade specification to verify exact dimensions and compatibility before purchasing.
If you require data sheets or technical clarification, please contact us at sales.kyotow@gmail.com.

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Refund & Cancellation Policy │ 返品・キャンセルポリシー

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If you have any doubts regarding tool geometries, coatings, or application grades, please consult our support team at sales.kyotow@gmail.com before finalizing your procurement.

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Direct Supply Chain Transparency サプライチェーンの透明性

Why are our prices so low? (価格が安い理由): Kyotow sources genuine Kyocera tools directly from domestic Japanese distribution networks, completely bypassing the steep regional markups, localized sales overhead, and heavy middleman margins of Western distributors. We pass 100% of those structural savings directly to your machine shop.
Kyotowは日本の国内流通ネットワークから京セラ正規品を直接仕入れることで、欧米の現地代理店による大幅な上乗せ価格や営業コスト、中間マージンを完全に排除しています。その構造的メリットを、お客様の加工現場へ100%還元いたします。

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100% メーカー正規品

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Tags: TNMG220408 , CA125P , TMK00231 , Kyocera , Triangular Insert , Negative Insert , Steel Machining , General Turning , CNC Machining , Indexable Tool

Kyocera TNMG220408 CA125P TMK00231

International Shipping Note

Product Overview

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details – Key Grade Characteristics

Grade Comparison Matrix

Chipbreaker Profile

Recommended Applications & Workpiece Materials

Application Map by Operation

Recommended Cutting Conditions

Operating Guidelines

Toolholder Compatibility

Packaging & Ordering Information

Catalog Meta Data

Shipping & Stock Information │ 発送・在庫情報

Product Images & Technical Accuracy │ 正確な製品情報

Refund & Cancellation Policy │ 返品・キャンセルポリシー

Payments & Security │ 安全な決済方法

Fast & Reliable Worldwide Shipping │ 国際スピード郵便

Direct Supply Chain Transparency サプライチェーンの透明性

Domestic Sourced

100% Genuine

No Regional Markups

Information

My Account Information

Customer Service