MGEHR 2525 3T40-D External Grooving and Parting Tool Holder

The MGEHR 2525 3T40-D is a heavy-duty external grooving and parting tool holder engineered for CNC and conventional lathes. With its 25×25 mm shank, this holder provides high rigidity and stability during demanding cutting operations. It is specifically designed for MGMN 3.0 mm carbide inserts, making it suitable for parting-off, external grooving, and slotting applications with cutting depths up to 40 mm.

The 3T40-D designation indicates a cutting width of 3.0 mm, a maximum cutting depth of 40 mm, and a reinforced “D” type design that improves clamping strength and durability. Its optimized pocket design ensures accurate insert positioning, secure clamping, and efficient chip evacuation. This results in stable performance, reduced vibration, and long tool life, even in heavy-duty cutting environments.

The MGEHR 2525 3T40-D is widely used in automotive, mold-making, and heavy engineering industries. When combined with the correct MGMN inserts, it offers reliable machining performance on steels, stainless steels, and cast iron.

Code Breakdown:

• M – Clamping method: screw clamp

• G – Insert type: grooving

• E – Insert shape: rectangular

• H – External grooving/parting holder style

• R – Cutting direction: right-hand

• 2525 – Shank size: 25×25 mm

• 3T40 – For MGMN 3.0 mm inserts, 40 mm cutting depth

• D – Reinforced holder design for durability

Key Features:

• External grooving and parting tool holder

• Shank size: 25×25 mm for high rigidity

• Right-hand cutting direction

• Compatible with MGMN 3.0 mm inserts

• Cutting depth: up to 40 mm

• Reinforced “D” style for stronger clamping

• Excellent for heavy-duty grooving and parting

Compatible Inserts:

• MGMN 300 series and MGMR 300  (e.g., MGMN 300-M, MGMN 300-G)