MCBNR/L (75°)
MCBNR/L (75°)
The Cargo MCBNR/L 75° Turning Tool Holder is a heavy-duty external turning tool holder designed for CNC lathes and conventional lathe machines. Featuring a 75° approach angle and a secure M-type multi-lock clamp (clamp + lock pin) system, this tool holder delivers superior rigidity and stable cutting performance for medium-duty external turning operations. It is engineered to hold CNMG negative indexable carbide inserts, which are widely available and economical, making this holder ideal for general machining tasks across industrial workshops, automotive suppliers, and fabricators in India.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Cargo MCBNR/L 75° Turning Tool Holder |
| Tool Type | External Turning Tool Holder |
| Approach Angle | 75° – Neutral cutting geometry for stable cutting |
| Insert Compatibility | ISO CNMG series negative indexable carbide inserts |
| Clamping System | M-Type multi-lock clamp + lock pin (secure insert holding) |
| Material | Hardened alloy steel (high rigidity and durability) |
| Finish | Precision ground |
| Machine Compatibility | CNC lathe & conventional lathe |
| Insert Included | No (sold separately) |
| Hand Options | Right (R) & Left (L) hand versions available |
Typical Dimensional Variants
The MCBNR/L series includes several popular shank sizes and lengths for different machine setups and insert types, such as:
| Model Code | Shank Size (mm) | Overall Length (mm) | Compatible Insert |
|---|---|---|---|
| MCBNR1616H12 | 16×16 | ~100 | CNMG12 |
| MCBNL1616H12 | 16×16 | ~100 | CNMG12 |
| MCBNR2020K12 | 20×20 | ~125 | CNMG12 |
| MCBNL2020K12 | 20×20 | ~125 | CNMG12 |
| MCBNR2525M12 | 25×25 | ~150 | CNMG12 |
| MCBNL2525M12 | 25×25 | ~150 | CNMG12 |
| MCBNR3232P16 | 32×32 | ~170 | CNMG16 |
| MCBNL3232P16 | 32×32 | ~170 | CNMG16 |
| MCBNR4040R16 | 40×40 | ~200 | CNMG16 |
| MCBNL4040R16 | 40×40 | ~200 | CNMG16 |
These sizes support CNMG12, CNMG16, and CNMG19 inserts depending on the shank and cutting requirements.
Key Features & Benefits
✔ 75° Cutting Edge Angle — Balanced geometry for stable chip control and efficient machining.
✔ Secure Multi-Lock Clamp System — Clamp + lock pin ensures the insert is held firmly under load, reducing vibration and improving finish quality.
✔ Wide Insert Compatibility — Works with standard CNMG inserts that are widely stocked in India and globally.
✔ Rigid Industrial Build — Hardened steel shank offers high rigidity and long service life.
✔ Versatile Use — Ideal for external turning, facing, and medium-duty profiling across steel, stainless steel, cast iron, and non-ferrous materials.
✔ Right & Left Hand Options — Flexible for various turret positions and lathe configurations.
Recommended Compatible Inserts (Sold Separately)
Common compatible CNMG negative indexable carbide inserts for this holder include:
-
CNMG120412 / CNMG120408 / CNMG120404
-
CNMG160408 / CNMG160412
-
CNMG190608 / CNMG190612
These inserts offer multiple cutting edges, good wear resistance, and are ideal for medium-duty turning applications.
Typical Industrial Applications
The Cargo MCBNR/L 75° Turning Tool Holder is suitable for:
-
External turning on CNC and manual lathes
-
Profiling and general turning tasks
-
Automotive component machining
-
CNC job shop production
-
Fabrication and engineering workshops
This holder strikes a balance between rigidity and versatility, making it a go-to choice for industrial turning requirements.
Why Choose Cargo MCBNR/L 75° Turning Tool Holder?
✔ Balanced Cutting Geometry — The 75° approach angle provides stable cutting action, excellent chip flow, and reduced chatter.
✔ Secure Clamping System — The multi-lock clamp + lock pin ensures secure insert holding under heavy and repeated loads.
✔ Standard Insert Support — Uses commonly available CNMG inserts, reducing tooling costs and downtime.
✔ Durable Construction — Hardened steel body stands up to demanding workshop environments.
✔ Versatile Use Cases — Perfect for production turning, facing, and medium-duty machining.
Frequently Asked Questions (FAQ)
Q1: What insert type does this holder use?
It is compatible with ISO CNMG negative indexable carbide inserts (CNMG12, CNMG16, CNMG19).
Q2: Is this suitable for CNC lathe use?
Yes, it works on both CNC lathes and conventional lathe machines.
Q3: Are carbide inserts included?
No — CNMG carbide inserts are sold separately.
Q4: What materials can be machined?
Suitable for machining steel, stainless steel, cast iron, and non-ferrous materials with the appropriate insert grade.
Q5: What is the advantage of a 75° approach angle?
A 75° cutting edge offers balanced cutting forces and stable machining with good chip control for general turning tasks.
