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MCBNR/L 75° External Turning Toolholders

Indexable Turning Tools

MCBNR/L External Turning Toolholders

MCBNR/L external turning toolholder showing the cutting head, top clamp and square shank
75°Entering Angle
Product ViewView Larger

A 75° toolholder for longitudinal external turning with CN-style negative inserts. Choose the shank size, hand and insert size to suit your setup.

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Already using an insert? Share its full code so we can check compatibility.

Shank Size
20 × 20 / 25 × 25 / 32 × 32 mm
Overall Length LF
125 / 150 / 170 mm
Insert Type
CN Negative Inserts
Tool Hand
R Right-Hand / L Left-Hand

Dimensions And Spare Parts

MCBNR/L top and side views with H, B, LF, OHX, HF, WF and the 75 degree entering angle
Drawing symbols correspond to the table below. All dimensions are in mm.
External turning diagram showing the 75 degree entering angle

75° Entering Angle

Check the feed direction, workpiece profile and clearance around the cutting head, especially near shoulders and faces.

MCBNR/LDimensions: mmWeight: kg

Scroll horizontally for all dimensions and parts

MCBNR/L order codes, dimensions, compatible inserts, shims, pins, clamps, double-ended screws, wrenches and weight
Order Code Dimensions (mm) Insert Spare Parts Weight
kg		 Quote action
H B LF OHX HF WF Shim Pin Clamp Double-Ended Screw Wrench
MCBNR/L2020K12 20 20 125 32 20 17 CN**1204** DCN1204MH SPM060170H CAM02H SDM060200H TH25LHTH30LH 0.4 Quote
MCBNR/L2525M12 25 25 150 35 25 22 CN**1204** DCN1204MH SPM060170H CAM02H SDM060250H TH25LHTH30LH 0.78 Quote
MCBNR/L3232P12 32 32 170 35 32 27 CN**1204** DCN1204MH SPM060170H CAM02H SDM060280H TH25LHTH30LH 1.37 Quote
MCBNR/L2525M16 25 25 150 42 25 22 CN**1606** DCN1604MH SPM080220FH CAM03H SDM060250H TH25LHTH30LH 0.78 Quote
MCBNR/L3232P19 32 32 170 42 32 27 CN**1906** DCN1904MH SPM100240FH CAM05H SDM080350FH TH40LH 1.37 Quote

R / L indicate right-hand and left-hand versions. Asterisks in insert codes are placeholders; confirm the full designation, chipbreaker, nose radius and grade before ordering.

Included inserts and parts are subject to the confirmed quotation.

Match The Toolholder
To Your Application

Start with the shank size, then check the insert and clamping setup. Consider the workpiece and machine together to select a compatible combination.

Ask Huisen For Selection Support

Turning Profile And Clearance

Select for longitudinal external turning. With a 75° entering angle, check head clearance and access at square shoulders, faces and profile transitions. Do not assume the same shoulder access as a 90° toolholder.

Shank Size And Overhang

Check the tool post capacity, cutting-edge centre height and available space. Keep overhang as short as the operation allows and clamp the shank securely.

Insert Size And Workpiece Material

Check compatibility with CN**1204**, CN**1606** or CN**1906**. Use the workpiece material, hardness and roughing or finishing requirements to select the insert grade, chipbreaker and nose radius.

Clamping And Maintenance

Clean the insert and shim seating surfaces before replacement. Inspect the clamp, pin and screw, and follow the applicable assembly method and tightening torque.

Selection FAQs

Check compatibility and supply details before ordering.

Is CN**1204** a complete insert order code?

No. This code identifies the insert series and size; the asterisks stand for unspecified parts of the designation. Confirm the complete insert code, nose radius, chipbreaker and grade for your material and application before ordering.

How do I choose right-hand or left-hand?

Check the tool post position, workpiece setup and actual feed direction. Spindle rotation alone is not enough to choose the hand. If unsure, share a photo of the turret or tool post and a workpiece drawing for selection support.

Which workpiece materials can I machine?

The toolholder holds the specified insert sizes. Material suitability depends on the insert grade, chipbreaker, cutting parameters and machine setup. Share the workpiece material, hardness and machining requirements so the insert can be selected accordingly.

Are inserts, shims and clamps included?

The table identifies compatible parts for selection and maintenance. The included inserts, shims, pins, clamps, screws and wrenches are subject to the confirmed quotation. Spare parts can also be quoted with your inquiry.

Tell Us What
You Need

Request a quote for your selected model, or share your material and machining requirements for help matching the toolholder and insert.

Prepare your inquiry, then copy it or open it in your email app.

Availability, lead time and included parts are confirmed with your quote.