MZG Three-Sided Edge and Side Groove Milling System
MZG Tool Machine Company, I am proud to present a detailed introduction to our comprehensive portfolio of Three-Sided Edge and Side Groove Milling Cutters. This tooling system is the pinnacle of efficiency for all grooving, slotting, and side-milling applications. The system's design is masterfully simple yet incredibly effective: multiple indexable inserts are secured around the periphery of a robust cutter body, allowing for the simultaneous machining of three faces in a single pass. This method guarantees superior parallelism, precise slot widths, and excellent surface finishes. Our portfolio is engineered into distinct platforms—large-diameter arbor-mounted discs for heavy-duty slotting, versatile shank-type cutters for T-slotting, and high-rigidity integrated cutters for the most demanding power applications.

High-Efficiency & Precision Slotting Performance
SMP and DMP series feature stable arbor-mounted or bayonet-type disc design providing rigid platform for multi-tooth cutting, allowing high feed rates and excellent surface finishes on groove bottom and side walls for production environments requiring accurate slots in large components.
Dedicated T-Slot Roughing & Finishing Performance
Complete T-slot solution stratified for different needs: HTS series with CCMT/MPHT inserts and TMR series with RPMT round inserts for economical roughing; SMT series with dedicated TGF/TT43L grooving inserts for precision finishing with superior accuracy on final T-slot dimensions.
Ultimate Power & High-Rigidity Performance
890 Integrated High Power T Cutter delivers uncompromising performance with high-rigidity integral structure eliminating potential weak points, offering unwavering stability and vibration dampening for heavy cutting forces, ideal for deep T-slots and aggressive side milling.
Product Performance
The performance of our Three-Sided Milling system is best understood through its application-specific strengths, which demonstrate a deep commitment to solving distinct manufacturing challenges with precision and power.
High-Efficiency & Precision Slotting Performance: For creating wide, open slots and grooves with high accuracy and efficiency, our SMP and DMP series are the premier choice. Their performance is rooted in the stable arbor-mounted or bayonet-type disc design, which provides a rigid platform for multi-tooth cutting. This allows for high feed rates and produces excellent surface finishes on the bottom and side walls of the groove.
Dedicated T-Slot Roughing & Finishing Performance: Machining T-slots requires a specialized tool, and our portfolio provides a complete solution. The HTS series, utilizing standard CCMT/MPHT inserts, and the TMR series, using robust RPMT round inserts, deliver outstanding performance for roughing out T-slots. The SMT series is a finishing specialist using dedicated TGF/TT43L grooving inserts for superior accuracy on final T-slot dimensions.
Ultimate Power & High-Rigidity Performance: For the most demanding T-slot and side milling operations, our 890 Integrated High Power T Cutter delivers uncompromising performance. Its key advantage is the high-rigidity integral structure. Unlike cutters assembled from multiple parts, this single-piece design eliminates potential weak points, offering unwavering stability and vibration dampening for heavy cutting forces.
Key Performance Indicators
- Diameter Range: 50-300+ mm for comprehensive applications
- Slot Width: 2-25+ mm with precise tolerance control
- Multi-Tooth Design: Up to 16 teeth for maximum productivity
- Insert Systems: Square, Rhombic, Round, Grooving, and Specialty inserts
- Three-Face Action: Simultaneous machining of three faces in single pass
Our Products

SMP01 three-sided edge milling cutter (bayonet type)
D79Bayonet type three-sided edge milling cutter for slot machining

SMP Three sided edge side groove cutter (cutter type)
D78Cutter type three-sided edge side groove cutter for milling operations

DMP Three-sided Edge Milling Cutter (cutter Type)
D76Cutter type three-sided edge milling cutter for slot and step machining

DMP three-sided edge milling cutter (bayonet type)
D75Bayonet type three-sided edge milling cutter for slot machining

SMP three-sided edge milling cutter (bayonet type)
D77Bayonet type three-sided edge milling cutter for drilling and slot machining

HTS T-Slot Side Mill
D73T-slot side mill for slot and step machining operations

TMR T-Slot Side Mill
D74T-slot side mill with round insert system for versatile machining

ATS T-Slot Side Mill
D81Advanced T-slot side mill for precision slot and step machining

890 Integrated high power T cutter
D81高刚性一体式结构,使型腔加工更加轻松!

SMT T-Slot Side Mill
D84Specialized T-slot side mill for T-slot machining operations
Product Gallery








Technical Parameters
Cutter Body Formats & Insert Systems
System available in Arbor-Mounted Disc Cutters (SMP, DMP series, 80-200mm diameter), Integral Shank T-Slot Cutters (HTS, TMR, ATS, SMT, 14-50mm diameter), and Integrated High-Power Cutters (890 Series, 96-115mm diameter). Supports wide array of inserts: Square (XSEQ, SPMG, MPHT), Rhombic (CCMT), Round (RCMT/RPMT), Grooving (TGF32L/TT43L), and Specialty (N331.1A) inserts.
Secure Clamping & Multi-Tooth Design
Robust screw-down clamping (M4x7, M5x13 with T15/T20 wrenches) ensures inserts held rigidly under heavy cutting loads. Disc cutters available with high number of teeth (up to 16) to maximize feed rates and productivity. Precision-machined insert pockets maintain tight tolerances for accurate cutting edge positioning.
Advanced Design Features
Cutting widths from 4mm to 20mm for arbor-mounted discs, with comprehensive size range from 50mm to over 300mm diameter. Standard metric and imperial bore sizes ensure universal compatibility. Through-coolant capabilities and optimized chip evacuation design for enhanced performance.
Application Scenarios & Processing
Application Scenarios
- General Grooving and Slotting: Primary application involving creating open-ended or closed slots in workpieces, such as keyways or clearance grooves
- T-Slot Milling: Critical application for manufacturing machine tool tables, fixture plates, and components requiring standardized T-slots for clamping
- Straddle Milling: Highly efficient production method using two disc cutters with spacer for simultaneous milling of parallel surfaces
- Side Milling and Shoulder Milling: Using cutter side to machine vertical walls or shoulders on parts
- Cutting Off / Slitting: Using thin three-sided cutter to part-off material or cut narrow slits
Main Functions
- Create Precise Grooves and Slots: Machine slots of specific width and depth with high accuracy and excellent parallelism between side walls
- Machine T-Slots to Standard Dimensions: Provide specialized tool for creating complex T-slot profile in roughing and finishing sequence
- Perform Efficient Side and Straddle Milling: Machine one or two parallel vertical surfaces with high productivity and dimensional control
- Provide Robust and Stable Platform: Offer rigid cutter body and secure insert clamping system for heavy grooving and side milling operations
- Deliver Economical and Versatile Solution: Reduce machining costs through durable, multi-edge indexable inserts and flexible system
Need Professional Grooving & Slotting Solutions?
Our technical team can help you select optimal three-sided edge and side groove milling cutters for precise grooving, T-slot machining, straddle milling, and side milling applications. From arbor-mounted disc cutters to integrated high-power solutions, we provide comprehensive cutting systems for superior parallelism and excellent surface finishes.