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Kyocera TNMG160412GT CA025P TMH00284 CNC Insert - Mirror

Kyocera TNMG160412GT CA025P TMH00284 CNC Insert - Mirror
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Kyocera TNMG160412GT CA025P TMH00284 CNC Insert - Mirror
$3.21 USD
$5.36 USD
1 or more $3.21 USD
  • Stock: In Stock
  • Model: CA025P
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: TMH00284
This product has a minimum quantity of 10
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Product Overview

The TNMG160412GT from Kyocera is a premium cermet indexable insert engineered for high-performance CNC turning operations. Featuring the advanced CA025P grade with a High-Precision Finishing Chipbreaker, this insert delivers exceptional surface finish quality, extended tool life, and reliable chip evacuation across a wide spectrum of steel workpiece materials. The 9.525mm (3/8") inscribed circle and 1.2mm corner radius provide optimal balance between edge strength and surface integrity, making it the ideal choice for high-precision finishing, mirror surface.

ISO Designation Breakdown

Complete decoding of the TNMG160412GT ISO 1832 designation:

PositionCodeMeaning
1TTriangular insert shape (60° included angle)
2N0° clearance angle (negative rake)
3M±0.05 mm tolerance class (m-class)
4GCylindrical hole with 40°–60° countersink
516Inscribed circle 9.525mm (3/8")
604Insert thickness 4.76mm (3/16")
712Corner radius 1.2mm
8GTGT – High-Precision Finishing Chipbreaker

Engineering Dimensions & Geometry

  • Insert Shape: Triangular (60° included angle)
  • Inscribed Circle (IC): 9.525mm (3/8")
  • Insert Thickness (S): 4.76mm (3/16")
  • Corner Radius (rε): 1.2mm
  • Hole Diameter: 5.16mm
  • Countersink Angle: 40°–60° (G-type)
  • Nose Angle Tolerance: ±0.05 mm (M-class)
  • Thickness Tolerance: ±0.13 mm

Grade Details – Key Grade Characteristics

  • Grade Name: CA025P
  • Substrate Type: Cermet (TiCN-based)
  • Coating System: PVD Multi-layer (TiCN + Al₂O₃)
  • Hardness: HRA 92.5
  • Transverse Rupture Strength: 2,200 MPa
  • Visual Identification: Gold-Bronze coating
  • Primary Application: High-speed finishing of steels and stainless steels
  • Machinability Index: Excellent surface finish at elevated cutting speeds

Grade Comparison Matrix

Comparative overview of CA025P against adjacent grades in the Kyocera portfolio:

GradeSubstrateCoatingBest For
CA025PCermet (TiCN-based)PVD Multi-layer (TiCN + Al₂O₃)High-speed finishing, steels
CA025CermetPVD TiCNGeneral steel turning
PV720CarbideCVD TiAlNHeavy roughing, cast iron
PR1535CermetPVD AlCrNStainless steel finishing

Chipbreaker Profile

GT – High-Precision Finishing Chipbreaker

Ultra-precision chipbreaker for mirror-finish applications. Minimal cutting forces and superior edge sharpness.

  • Chip Groove Geometry: Ultra-narrow groove, 0.05–0.10 mm land width
  • Effective Rake Angle: Positive 20° effective rake
  • Chip Control Range: High-precision finishing, mirror surface

Recommended Applications & Workpiece Materials

  • Carbon Steel: C15–C60 (ISO P1.1–P3.2) – Excellent
  • Alloy Steel: 4140, 4340, 8620 (ISO P4.0–P5.0) – Very Good
  • Stainless Steel: 304, 316, 420 (ISO M1.0–M3.0) – Good to Very Good
  • Tool Steel: H13, D2, O1 (ISO P6.0–P7.0) – Good
  • Free-Machining Steel: 1215, 12L14 (ISO P1.3–P2.0) – Excellent
  • Bearing Steel: 52100 (ISO P5.0) – Good

Application Map by Operation

Visual suitability matrix for TNMG160412GT across common turning operations:

Operation TypeSuitability
Roughing☆☆☆☆☆ Not Recommended
Semi-Roughing★☆☆☆☆ Not Recommended
Semi-Finishing★★★☆☆ Good
Finishing★★★★★ Excellent
Precision / Mirror★★★★★ Excellent

Recommended Cutting Conditions

Optimized parameters for CA025P grade when machining plain carbon and alloy steels (dry or MQL lubrication):

ParameterRecommended RangeUnit
Cutting Speed (Vc)270–450m/min
Feed Rate (fn)0.03–0.15mm/rev
Depth of Cut (ap)0.05–0.8mm

Note: Values are starting recommendations. Adjust based on machine rigidity, workpiece condition, and desired surface finish. Reduce Vc by 15–20% for interrupted cuts or hardened materials.

Operating Guidelines

  • Always verify toolholder seat cleanliness before insert indexing to prevent micro-chipping.
  • Use minimum quantity lubrication (MQL) or dry cutting for optimal cermet performance; avoid flood coolant with high thermal shock.
  • Maintain consistent feed rates to prevent built-up edge (BUE) formation on low-carbon steels.
  • For finishing operations, reduce depth of cut to <0.5 mm and increase cutting speed to upper range for mirror surfaces.
  • Index the insert after visible flank wear (VB) reaches 0.15 mm to protect the toolholder seat.
  • Store unused inserts in original packaging away from direct sunlight and moisture.

Toolholder Compatibility

The TNMG160412GT is designed for standard TNMG toolholders with negative rake seats. Compatible holder families include:

  • External Turning: MTJNR/L 16-4D, STGCR/L 16-3B, DTGCR/L 16-4C
  • Internal Boring: S16S-SCLCR/L, A16S-MCLNR/L
  • Clamp Type: Lever-lock or top-clamp (depending on holder design)
  • Seat Angle: 0° (negative rake) – do not use in positive rake holders

Packaging & Ordering Information

Each insert is individually packaged in anti-static blister packs with foam cushioning to prevent edge damage during transit. Standard pack quantity: 10 inserts per box. MPN: TMH00284. Batch traceability code laser-marked on every insert. Store in original packaging at 15–25°C, humidity <60% RH. For bulk orders, contact our technical sales team for volume pricing and lead-time confirmation.

Catalog Meta Data

Catalog Series: TNMG-16 Cermet Line
Revision: Rev. 2026-016
ECCN: 1C003.b
HS Code: 8209.00.00
RoHS Status: Compliant
REACH Status: Compliant
Conflict Mineral Free: Certified
Country of Manufacture: Japan
Quality Standard: ISO 9001:2015, ISO 14001:2015

Shipping & Stock Information │ 発送・在庫情報

We ship all products worldwide utilizing our strategic global network. To ensure the fastest dispatch times and optimal customs clearance, items are fulfilled and shipped directly from our primary corporate distribution facilities.

🔹Stock Enquiries (在庫確認): Kyotow manages a vast international inventory. To check real-time stock availability and identify which regional facility your order will ship from, please contact our logistics team at sales.kyotow@gmail.com.

🔹Order Processing Pipeline:

  • 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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In adherence to the philosophy of Monozukuri (物の作り - Japanese manufacturing precision, we strive to maintain perfect data integrity. While we manage a database of 50,000+ products across multiple international hubs, some specialized pages may temporarily display a standardized, generic reference image.

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.

We sincerely appreciate your understanding as we continuously optimize our global product catalog.

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

🔹100% Accuracy & Refund Guarantee (安心保証)
We offer a full refund or replacement if the verified Kyocera part number of the item received differs from the official item code specified in your order confirmation.

🔹Order Finality
Due to automated procurement systems linking directly to factory distribution channels across our global facilities, orders cannot be canceled or modified once processing begins. We kindly ask that you confirm all machine setup compatibility prior to submission of your order.

🔹Need Assistance? (お問い合わせ)
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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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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日本国内直接調達

Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.

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