MCKNR/L (75°)
MCKNR/L (75°)
The Cargo MCKNR/L 75° Turning Tool Holder is a precision external turning tool holder designed for CNC lathes and conventional manual lathes. Featuring a 75° cutting approach angle and a secure M-type clamping system (clamp + lock pin), this unit delivers stable cutting performance with reduced vibration and excellent rigidity for external turning and profiling operations. It is purpose-built to hold CNMG series negative indexable carbide inserts for versatile machining on steel, stainless steel, alloys, and cast iron.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Cargo MCKNR/L 75° Turning Tool Holder |
| Tool Type | External Turning Tool Holder |
| Approach Angle | 75° — Neutral lead angle suited for medium-duty cutting and profiling |
| Insert Compatibility | CNMG series negative indexable carbide inserts (e.g., CNMG12, CNMG16, CNMG19) |
| Clamping System | M-Type Multi-Lock Clamp + Lock Pin (secure and stable) |
| Material | Hardened alloy steel for high rigidity |
| Finish | Precision ground surface |
| Machine Compatibility | CNC lathes and manual lathes |
| Hand Options | Available in Right (R) and Left (L) versions |
| Inserts Included | No (inserts sold separately) |
Typical Dimensional Variants
Cargo MCKNR/L tool holders are manufactured in multiple standard sizes so you can choose the best fit for your machine and cutting insert needs.
| Model Code | Shank Size (mm) | Overall Length (mm) | Compatible Insert |
|---|---|---|---|
| MCKNR1616H12 | 16 × 16 | ~100 | CNMG12 |
| MCKNR2020K12 | 20 × 20 | ~125 | CNMG12 |
| MCKNR2525M12 | 25 × 25 | ~150 | CNMG12 |
| MCKNR3232P16 | 32 × 32 | ~170 | CNMG16 |
| MCKNR3232P19 | 32 × 32 | ~170 | CNMG19 |
| MCKNR4040R19 | 40 × 40 | ~200 | CNMG19 |
(*Right-hand (“R”) and Left-hand (“L”) versions available for most sizes.)
Key Features & Benefits
✔ Optimized 75° Approach Angle – Provides stable cutting forces and excellent chip control during external turning and facing.
✔ Secure M-Type Clamping System (Clamp + Lock Pin) – Ensures positive insert lock-up for reduced vibration and higher cutting accuracy.
✔ Wide CNMG Insert Compatibility – Works with ISO CNMG-series inserts that are widely available in India and globally.
✔ Rigid Hardened Steel Body – Offers high rigidity, durability, and extended service life under heavy use.
✔ Versatile Use – Suitable for medium-duty turning, profiling, and facing tasks across steel, stainless steel, alloys, and cast iron.
✔ Left & Right Hand Versions – Flexible setup for different lathe orientations and turning directions.
Recommended Compatible Inserts (Sold Separately)
Common CNMG negative indexable inserts that fit this tool holder include:
-
CNMG120412 / CNMG120408 / CNMG120404
-
CNMG160408 / CNMG160412
-
CNMG190608 / CNMG190612
These inserts provide multiple usable edges, good wear resistance, and strong performance in general machining.
Typical Industrial Applications
The Cargo MCKNR/L 75° Turning Tool Holder is ideal for:
-
External turning of shafts, cylinders, and profiles
-
Facing and profiling operations
-
Medium-duty metal removal
-
Automotive component machining
-
Engineering workshops and CNC production units
Why Choose Cargo MCKNR/L (75°) Turning Tool Holder?
✔ Balanced Cutting Geometry – The 75° angle ensures smooth chips and reduced cutting forces for consistent accuracy.
✔ Secure & Stable Clamping – M-type clamp with lock pin holds inserts firmly for reliable tool performance.
✔ Standard CNMG Insert Usage – Uses common insert formats, lowering tooling costs and lead times.
✔ Industrial-Grade Build – Hardened steel construction withstands demanding workshop environments.
✔ Right & Left Hand Availability – Provides flexibility in machine setup to match your CNC or manual lathe station.
Frequently Asked Questions (FAQ)
Q1: What type of inserts does the MCKNR/L holder use?
It is designed for CNMG negative indexable carbide inserts such as CNMG12, CNMG16, and CNMG19.
Q2: Is this holder suitable for CNC lathes?
Yes — this tool holder works on both CNC and conventional manual lathe machines.
Q3: Are carbide inserts included?
No — carbide inserts are not included and must be purchased separately.
Q4: What materials can be machined?
It is suitable for machining steel, stainless steel, alloy steel, and cast iron with the appropriate insert grade.
Q5: What is the benefit of a 75° approach angle?
A 75° geometry balances cutting forces and delivers stable chip flow, ideal for many external turning tasks.
