MZG Side Lock Tool Holder System
MZG present a comprehensive and detailed introduction to the Side Lock Tool Holder system. Often regarded as the benchmark for secure, positive-drive tool holding, the Side Lock holder is the workhorse of the machine shop. Its design is elegantly simple yet incredibly effective, engineered to provide an unshakeable mechanical lock that excels in applications involving high torque and heavy cutting forces. This system is the go-to choice when absolute prevention of tool rotation and pull-out is non-negotiable.
Uncompromising Torque Transmission
Core performance feature is direct mechanical lock. By tightening side screws directly onto Weldon flat of end mill's shank, holder creates positive, physical engagement eliminating any possibility of tool slipping rotationally.
Absolute Pull-Out Prevention
Mechanical lock on Weldon flat makes tool pull-out physical impossibility under normal cutting forces. This unparalleled security makes Side Lock holder safest and most reliable choice for heavy-duty operations.
Simplicity and Reliability
With no hydraulic chambers, collets, or heating elements, Side Lock holder is epitome of mechanical reliability. Impervious to temperature fluctuations or hydraulic pressure, exceptionally durable and easy to use.
System Performance Analysis
The performance of a Side Lock Tool Holder is defined by its raw clamping power, reliability, and its ability to transmit maximum torque from the spindle to the cutting tool. The core performance feature is direct mechanical lock.
By tightening one or two side screws directly onto Weldon flat of an end mill's shank, the holder creates positive, physical engagement. This eliminates any possibility of tool slipping rotationally within holder, allowing for highest levels of torque transmission.
The mechanical lock on Weldon flat makes tool pull-out physical impossibility under normal cutting forces. This unparalleled security makes Side Lock holder safest and most reliable choice for heavy-duty, high-stock-removal operations.
While celebrated for its strength, our modern Side Lock holders are engineered for performance. They are dynamically balanced to standard of G6.3 at 8,000 RPM, ensuring smooth operation and protecting machine spindle during high-speed use.
Key Performance Indicators
- Clamping: Direct mechanical lock on Weldon flat
- Tolerances: Inner Hole H5, Shank h6
- Dynamic Balance: G6.3 @ 8,000 RPM
- Interfaces: BT, NT, DAT, HSK, Straight Shank
- Application: Heavy roughing, high torque operations
Our Products
BT-SLN Side Lock End Mill Holder
C78Features an H5 inner hole tolerance, side locking screws, and central cooling
NT-SLN Milling Machine Tool Holder
C79Features an H5 inner hole tolerance, side locking screws, and central cooling
DAT-SLN Milling Machine Tool Holder
C80Features an H5 inner hole tolerance with DIN-1835-B compliant dynamic balance
HSK-SLN Milling Machine Tool Holder
C81Features an H5 inner hole tolerance with DIN-1835-B compliant dynamic balance
Small Diameter Side Fixed Extended Connecting Rod
C82Extension rods featuring side locking, available for various diameters
Product Gallery
Technical Parameters
Clamping Mechanism & Precision Tolerances
Utilizes one or two side locking screws that press directly onto Weldon flat of cutting tool shank. Inner Hole Tolerance: H5, ensuring close and precise fit on tool shank. Shank Diameter Tolerance (on holder): h6, for high-precision fit into machine spindle.
Dynamic Balance & Coolant Delivery
Standard G6.3 at 8,000 RPM. Higher balance grades and speeds can be customized upon request to meet specific high-speed machining requirements. Select models, particularly in BT series, support central cooling (DIN69871-AD), allowing for high-pressure through-tool coolant delivery.
Shank Interface Types & Critical Ordering Information
Extensive range ensures compatibility with virtually any milling machine: BT (BT-SLN) for general-purpose and high-performance CNC machines, NT (NT-SLN) for traditional heavy-duty manual or CNC mills, DAT (DAT-SLN) for high-precision dual-contact spindles, HSK (HSK-SLN) for modern high-speed machining centers, Straight Shank (C-SLN) for use as extensions or in custom setups. For NT-style holders, essential to confirm required pull rod (drawbar) thread specification (metric or imperial) to ensure compatibility with machine.
Application Scenarios & Applicable Machining
Application Scenarios
- Heavy Roughing and High Metal Removal: This is the primary application. Any operation that involves "hogging" out large amounts of material, such as roughing molds, dies, and large structural components, benefits from the Side Lock's secure grip
- Slotting and Shoulder Milling: The holder's resistance to rotational and axial forces makes it ideal for deep slotting and aggressive shoulder milling where cutting forces are high and variable
- Conventional and Heavy-Duty Machining: The NT-SLN series is perfect for large, conventional milling machines where torque and power are more critical than ultra-high RPM
- Drilling with Flatted Shanks: While primarily for milling, it is an excellent choice for holding large-diameter drills that feature a Weldon flat, providing a much more secure grip than a standard drill chuck
- Cost-Effective General-Purpose Milling: For job shops and general manufacturing, the Side Lock holder represents a durable, long-lasting, and cost-effective solution for a wide range of everyday milling tasks
Main Functions
- Provide Positive Mechanical Lock: Its primary function is to physically prevent the cutting tool from rotating within the holder, enabling maximum torque transmission
- Eliminate Tool Pull-Out: It functions to create an axial lock that makes it impossible for the tool to be pulled out of the holder by cutting forces, ensuring process security
Main Functions
Core Functions
- Provide Positive Mechanical Lock: Its primary function is to physically prevent the cutting tool from rotating within the holder, enabling maximum torque transmission
- Eliminate Tool Pull-Out: It functions to create an axial lock that makes it impossible for the tool to be pulled out of the holder by cutting forces, ensuring process security
System Benefits
- Deliver Maximum Rigidity and Stability: The robust, thick-walled design serves to dampen vibration and provide a highly rigid connection between the tool and the machine spindle
- Offer Simple, Reliable, and Universal Solution: Through its straightforward design and availability across all major shank interfaces (BT, NT, HSK, DAT), its function is to provide a powerful and dependable tool holding solution for any milling application, on any machine
Need Professional Side Lock Tool Holder Solutions?
Our technical team can help you select optimal side lock tool holders for your heavy-duty milling operations. From uncompromising torque transmission to absolute pull-out prevention, we provide the workhorse solution for demanding machining applications.
