CKJNL 2525 Clamp Holder for KNUX Indexable Inserts

The CKJNL 2525 Clamp Holder is a left-hand turning toolholder engineered for use with KNUX 1604 indexable inserts, delivering stable clamping and precise external turning in workshop and production environments.

• Left-hand Cutting Direction
• Compatible with KNUX 1604 Inserts
• 25 mm Shank Width and 25 mm Height
• 30 mm Cutting-Head Width for Stability
• Clamping Screw M6 for Secure Fixing

Reliable Clamping that Reduces Vibration and Rework

The Clamp Holder is designed to secure indexable inserts with consistent seating and repeatable clamping force, which reduces chatter and extends Insert Life. With a Clamping Screw M6 and a dedicated Clamping Wedge (BK028), the toolholder delivers a firm hold that improves Surface Finish and dimensional accuracy on external turning operations. The 93° Cutting Angle and Left-Hand Cutting Direction make this holder particularly suitable for left-hand machining applications, where stable force transmission is essential.

Fast Setup and Clear Compatibility with Standard Accessories

Mounting and adjustment are straightforward thanks to defined connection points and standardised fasteners. The holder accepts a U Plate of type TA046 (Mounting Plate) and uses a U-Plate Screw M3x10 for secure attachment. Adjustment and tightening are performed with an Allen Key (3 Allen), enabling quick tool changes and minimising downtime. Compatibility with the KNUX 1604 Insert Geometry means fewer compromises at tool selection and a simpler tooling kit for the Workshop.

Compact Design for Precise Engagement and Reach

With a 25 mm Shank Width and 25 mm Shank Height, plus a 30 mm Cutting-Head Width and an Overall Length of 150 mm, the holder balances rigidity and accessibility. The 35 mm Cutting Height provides sufficient engagement for robust turning tasks while keeping the tool profile compact for confined setups. These dimensional choices help maintain Tool Stiffness close to the cutting point, which translates into higher feed rates and more predictable machining results under load.

Purpose-Built for Practical Production Use

This toolholder has been conceived for practical use in both jobbing shops and industrial settings where reliable, repeatable machining is required. The ISO designation CKJNL 2525 confirms a standardised form factor that integrates with common lathe toolpost systems and holders. By specialising for KNUX 1604 inserts and left-hand operations, the CKJNL 2525 reduces selection uncertainty and supports efficient process planning on the shopfloor.

Choose the CKJNL 2525 Clamp Holder from Teknik Makina for assured left-hand turning performance — contact Metav Werkzeuge for availability and delivery: info@metav-werkzeuge.com • +49 2822 7131930

Product Specifications

• SKU: RD034TM
• Manufacturer: Teknik Makina
• Designation: CKJN for KNUX Indexable Inserts (CKJNL 2525)

Facts

• Shank Width: 25 mm
• Shank Height: 25 mm
• Cutting-Head Width: 30 mm
• Overall Length: 150 mm
• Cutting Height: 35 mm
• Cutting Angle: 93°
• Thread Bore (Tool Shank): M16
• U-Plate Screw: M3x10
• Clamping Screw: M6

Features

• Compatible Inserts: KNUX 1604
• U Plate: TA046 (Mounting Plate)
• Clamping Wedge: BK028 (Clamping Wedge)
• Allen Key: 3 Allen (Adjustment Tool)
• ISO Designation: CKJNL 2525
• Cutting Direction: Left-hand

FAQ

Is the holder compatible with KNUX 1604 inserts?
Yes. The CKJN for KNUX Indexable Inserts (ISO CKJNL 2525, SKU RD034TM) is designed specifically for KNUX 1604 insert geometry, ensuring correct seat and secure clamping for consistent cutting performance.

What fasteners are required for mounting?
Mounting uses a U-Plate Screw M3x10 for the U Plate (TA046) and a Clamping Screw M6 for insert fixation. The design accommodates a standard M16 Thread Bore in the Tool Shank for secure attachment.

Which cutting direction is supported?
This Clamp Holder is configured for Left-hand Cutting Direction, making it suitable for left-hand turning operations and turning centres that require a left-facing tool orientation.

How is the tool adjusted and tightened?
Adjustment is performed using an Allen Key set indicated as 3 Allen for the relevant screws and clamps; tightening the M6 Clamping Screw secures the insert reliably in the pocket.

Manufacturer: Teknik Makina, Nolu Sokak, No 9, Selcuklu, Turkey, Email: info@teknik-makina.com / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; Email: info@metav-werkzeuge.com