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Kyocera CNMG120408WQ CA525 TAC00991

Kyocera CNMG120408WQ CA525 TAC00991
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Kyocera CNMG120408WQ CA525 TAC00991
$3.59 USD
$5.99 USD
1 or more $3.59 USD
  • Stock: In Stock
  • Model: CA525
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: TAC00991
This product has a minimum quantity of 10
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1. Product Overview

The CNMG120408WQ CA525 TAC00991 is a premium-grade indexable carbide turning insert manufactured by Kyocera Corporation in Japan. Designed for precision CNC turning operations, this insert combines an ultra-fine grain carbide substrate with a multi-layer CVD coating to deliver exceptional wear resistance, thermal stability, and cutting performance across a wide range of steel machining applications.

With its 80° Rhombic (Diamond) geometry and WQ chipbreaker profile, the CNMG120408WQ is optimized for general turning, medium to roughing operations, providing consistent chip control, reduced cutting forces, and superior surface finish quality. Whether deployed in high-volume production or precision prototyping environments, this insert ensures reliable performance and extended tool life.

2. ISO Designation Breakdown

The CNMG120408WQ follows the ISO 1832 standard for indexable inserts. Each letter and number in the designation conveys critical geometric and functional information:

Position Code Meaning
1st Letter C 80° Rhombic (Diamond)
2nd Letter N 0° Clearance
3rd Letter M ±0.05mm Dimensional Tolerance
4th Letter G With Hole + Chip Breaker
1st Numbers 12.7 Inscribed Circle Diameter: 12.7mm (1/2")
2nd Numbers 4.76 Nominal Thickness: 4.76mm (3/16")
3rd Numbers 0.8 Corner Radius: 0.8mm
Suffix WQ Chipbreaker Style: Wide groove chipbreaker for general purpose

3. Engineering Dimensions & Geometry

Parameter Value Tolerance
Inscribed Circle Diameter (IC) 12.7mm (1/2") ±0.05mm
Insert Thickness (S) 4.76mm (3/16") ±0.05mm
Corner Radius (r) 0.8mm ±0.05mm
Inscribed Circle Diameter (d) 12.7mm (1/2") ±0.08mm
Hole Diameter 5.16mm (for 12mm IC) / 6.35mm (for 16mm IC) +0.1mm
Counter Sink Diameter 9.5mm (for 12mm IC) / 11.0mm (for 16mm IC) +0.2mm
Clearance Angle 0° (Negative Insert) ±0.5°

4. Grade Details – Key Grade Characteristics

The CA525 grade is a high-performance CVD-coated carbide grade specifically engineered for steel machining applications. Below are the detailed characteristics:

Characteristic Specification
Substrate Material Ultra-fine grain tungsten carbide (WC-Co) with high cobalt content
Coating System CVD Multi-layer (TiN/TiCN/Al2O3) - Gold colored top layer
Hardness HRA 91.5
Transverse Rupture Strength ≥ 3,200 MPa
Thermal Stability Up to 1,000°C cutting temperature
Wear Resistance Excellent crater and flank wear resistance
Fracture Resistance High toughness for interrupted cutting
Insert Color Gold/Yellow (TiN top layer)
ISO Application Class P25-P35 (Steel machining)
Primary Application Range Medium to roughing of carbon steel, alloy steel, and cast steel

5. Grade Comparison Matrix

Compare CA525 with adjacent grades in the Kyocera portfolio to select the optimal grade for your application:

Grade Coating ISO Range Speed Wear Resistance Toughness
CA525 CVD TiN/TiCN/Al₂O₃ P25-P35 Medium-High ★★★★☆ ★★★★★
CA510 CVD TiN/TiCN/Al₂O₃ P15-P25 High ★★★★★ ★★★☆☆
CA530 CVD TiN/TiCN/Al₂O₃ P35-P45 Medium ★★★☆☆ ★★★★★

6. Chipbreaker Profile

The WQ chipbreaker on the CNMG120408WQ is engineered with the following characteristics:

  • Profile Design: Wide groove chipbreaker for general purpose
  • Geometric Features: Wide chip groove, excellent chip control
  • Primary Applications: General turning, medium to roughing operations
  • Chip Control: Excellent chip curling and breaking across recommended feed rates
  • Edge Preparation: Precision-honed edge for optimal balance between sharpness and strength

7. Recommended Applications & Workpiece Materials

The CNMG120408WQ CA525 is ideally suited for the following workpiece materials:

Carbon Steel, Alloy Steel (≤ 42 HRC), Cast Steel, Stainless Steel, General Engineering Steels

Material Machinability Rating Recommended Operation
Carbon Steel (C35, C45, C60) ★★★★★ Excellent Roughing, Semi-Finishing, Finishing
Alloy Steel (4140, 4340, 8620) ★★★★☆ Very Good Semi-Finishing, Medium Roughing
Cast Steel (GS-52, GS-60) ★★★★☆ Very Good Roughing, General Turning
Stainless Steel (304, 316) ★★★☆☆ Good Semi-Finishing, Finishing
Tool Steel (H13, D2, O1) ★★★☆☆ Good Light Roughing, Semi-Finishing

8. Application Map by Operation

Performance suitability matrix for the CNMG120408WQ WQ across common turning operations:

Operation Type Suitability Recommended Depth of Cut (ap) Recommended Feed (fn)
Roughing Good 2.0-5.0 mm 0.20-0.40 mm/rev
Semi-Finishing Excellent 1.0-3.0 mm 0.15-0.30 mm/rev
Finishing Good 0.5-2.0 mm 0.08-0.18 mm/rev
Continuous Cutting Excellent Variable Variable
Interrupted Cutting Good Reduce by 30% Reduce by 20%

9. Recommended Cutting Conditions

Optimized cutting parameters for the CNMG120408WQ CA525 when machining carbon and alloy steels:

Operation Cutting Speed Vc (m/min) Feed Rate fn (mm/rev) Depth of Cut ap (mm)
Roughing 160-220 0.20-0.40 2.0-5.0
Finishing 220-300 0.08-0.18 0.5-2.0

Note: Values are guidelines for stable conditions with adequate coolant supply. Reduce speeds by 15-20% for alloy steels and 25-30% for stainless steels. Always perform test cuts to optimize for your specific machine and setup.

10. Operating Guidelines

  • Coolant Recommendation: High-pressure water-soluble coolant (5-8% concentration) or neat cutting oil for finishing operations
  • Entry Strategy: Use ramp entry or arc entry to avoid impact loading on the insert edge
  • Tool Overhang: Minimize tool overhang to ≤ 1.5x holder height to reduce vibration and improve stability
  • Insert Seating: Ensure clean insert pocket and proper seating torque (3.5-4.5 N·m for M3.5 screws)
  • Chip Management: Verify chip flow direction; use chip deflectors if necessary to protect the workpiece surface
  • Speed Ramp-Up: Start at 70% of recommended Vc and increase gradually while monitoring tool wear and surface finish
  • Tool Life Check: Monitor flank wear (VB). Replace insert when VB reaches 0.3mm for roughing or 0.15mm for finishing
  • Storage: Store inserts in original packaging away from direct moisture and temperature extremes

11. Toolholder Compatibility

The CNMG120408WQ is a negative-style insert (0° clearance) with a central hole, requiring compatible negative toolholders with a 95° approach angle. Recommended holder configurations:

Holder Type Compatible Models Shank Size
External Turning MCLNR/L (95° approach angle, 12mm IC) 20x20mm, 25x25mm
Specific Models MCLNR2020K12, MCLNL2020K12, MCLNR2525M12, MCLNL2525M12 Standard DIN 4980
Clamp Style Lever lock (L) or Top clamp (T)

Ensure holder pocket is clean and undamaged before insert installation. Use genuine Kyocera toolholders for optimal performance and safety.

12. Packaging & Ordering Information

Attribute Details
Manufacturer Part Number TAC00991
Quantity per Package 10 inserts per pack
Packaging Type Anti-static plastic blister with foam insert
Label Information Model code, grade, batch number, barcode, ISO certification mark
Minimum Order 1 pack (10 pieces)
Bulk Availability Volume discounts available for 50+ packs

13. Catalog Meta Data

Field Value
Product Series CA500 Series
Coating Code CVD-Gold
Insert Classification Negative Insert with Hole
Dimensional Standard ISO 1832
Catalog Revision Rev. 2026.91
Country of Manufacture Japan
Warranty Standard manufacturer warranty against defects

Why Buy from Kyotow.com?
Genuine OEM industrial cutting tools backed by full manufacturer warranty. Expert CNC tooling application support. Fast worldwide shipping with tracked delivery. Bulk and institutional orders welcome.

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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:

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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.

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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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