Kyocera RNMG120400 CA115P TML00176 Rnd Ins - Heavy Rgh, Cont

Product Overview

The Kyocera RNMG120400 CA115P TML00176 is a premium round insert engineered for Heavy Roughing, Contouring. Manufactured in Japan to ISO 1832 standards, this insert combines a fine-grained carbide substrate with an advanced PVD TiAlN multilayer coating to deliver exceptional wear resistance, thermal stability, and chip control. The - Precision chipbreaker profile ensures reliable chip breaking and superior surface finish across a wide range of cutting parameters. Whether you are finishing precision shafts or performing medium-duty turning on alloy steel, this insert provides consistent dimensional accuracy and extended tool life that reduces cost per component.

ISO Designation Breakdown

The ISO designation RNMG120400 is decoded as follows:

• R: Insert Shape: Round (Full Circle)
• N: Clearance Angle: 0° (Neutral)
• M: Tolerance Class: M (±0.05mm thickness, ±0.08mm inscribed circle)
• G: Hole/Chipbreaker: Cylindrical hole with countersink on both sides
• 12: Inscribed Circle (IC) = 12.70 mm (1/2")
• 04: Insert Thickness (S) = 4.76 mm (3/16")
• 00: Nose Radius (R) = 0.0 mm (Sharp corner)

Engineering Dimensions & Geometry

Precise dimensional data for tool selection, holder compatibility, and CAM programming:

Grade Details - Key Grade Characteristics

The CA115P grade is a PVD-coated carbide optimized for steel and stainless steel machining:

• Substrate: Fine-grained WC-Co carbide with high cobalt content for toughness and wear resistance
• Coating: Advanced PVD TiAlN multilayer coating (gold-bronze appearance) for high-temperature stability
• Hardness: HRA 92.5 ± 0.5, providing excellent crater and flank wear resistance
• Color Code: Bronze/Gold - easily identifiable in tool cribs and CNC setups
• ISO Application Range: P15-P30, M15-M25 - optimized for steel and stainless steel machining
• Cutting Speed Capability: 150-350 m/min (depending on workpiece material and operation)
• Chip Control: Excellent chip breaking across medium to high feed rates (0.1-0.5 mm/rev)
• Edge Preparation: Precision-honed T-land edge for reduced burr formation and extended edge life

Grade Comparison Matrix

Compare CA115P with related Kyocera grades to select the optimal insert for your application:

Chipbreaker Profile

The RNMG120400 features the - Precision chipbreaker profile. This geometry is specifically designed for Precision machining. The optimized rake angle and groove depth promote smooth chip curling and controlled chip breakage, preventing bird-nesting and protecting both the workpiece surface and the machine tool. The precision-ground edge preparation minimizes burr formation and ensures a clean entry into the cut, making it ideal for CNC automated production where unattended operation is required.

Recommended Applications & Workpiece Materials

The CA115P grade with RNMG120400 geometry is recommended for the following materials:

• Carbon Steel (C45, C60): Excellent for heavy roughing and high material removal rates
• Alloy Steel (4140, 4340): Strong edge withstands high cutting forces in forged blanks
• Stainless Steel (304, 316): Good performance with adequate coolant delivery
• Cast Iron (GG25, GGG40): Superior strength for interrupted cuts and sand-cast surfaces
• Non-Ferrous (Al, Cu): Avoid - not optimized for soft gummy materials

Application Map by Operation

Performance rating by machining operation (★★★★★ = optimal):

Recommended Cutting Conditions

Starting parameters for stable machining. Adjust based on machine rigidity, coolant, and part geometry:

Operating Guidelines

Follow these best practices to maximize insert life and part quality:

• Run-in Procedure: Reduce cutting speed by 20% for the first 5 minutes to stabilize the cutting edge and coating
• Coolant Recommendation: Use water-soluble coolant at 6-8% concentration for steel; synthetic coolant for stainless steel to prevent built-up edge
• Tool Overhang: Minimize tool overhang to 1.5x tool diameter to reduce vibration and improve surface finish
• Insert Positioning: Ensure insert sits flush in pocket; torque clamp screw to 3.5-4.5 Nm (refer to holder specification)
• Chip Management: Verify chipbreaker orientation matches rotation direction; chips should curl and break into C- or 6-shape
• Edge Inspection: Check for flank wear (VB < 0.3 mm) and crater wear (KT < 0.2 mm); replace insert when limits reached
• Speed Adjustment: If vibration or chatter occurs, reduce speed by 10% and increase feed by 5% to maintain chip thickness
• Storage: Store inserts in original packaging away from moisture and direct sunlight; avoid contact between cutting edges

Toolholder Compatibility

Compatible Kyocera and standard ISO toolholders for this insert:

• External Turning: SRGCR / SRGCL 2525M12 (for RNMG 12-size, round insert holder)
• Heavy Roughing: SRDCN 3232P15 (for 15-size, negative rake, high rigidity)
• Face Turning: SRACR / SRACL 2020K09 (for 09-size, 75° approach)
• Internal Boring: S20R-SRGCR09 (screw-clamp, minimum bore Ø25 mm)
• General Purpose: PRGCR / PRGCL 2525M12 (for round inserts, 0° clearance)

Packaging & Ordering Information

Packaging details, pricing, and ordering terms:

• Packaging Type: Individual plastic insert pocket with desiccant; 10 inserts per sealed blister pack
• Label Information: Each pack includes Kyocera hologram, batch number, ISO designation, and grade color code
• Minimum Order Quantity: 10 inserts (1 pack); bulk pricing available for quantities of 50, 100, and 500+
• Unit Price: $8.9 per insert (10-pack pricing); contact sales for OEM and distributor volume discounts
• Stock Availability: Standard items typically ship within 24-48 hours; non-stock items have 2-4 week lead time
• Return Policy: Unused inserts in original packaging may be returned within 30 days; custom orders are non-returnable
• Warranty: Full manufacturer warranty against material and coating defects; technical support available via chat and email

Catalog Meta Data

Technical catalog and compliance information: