GROOVING AND PARTING-OFF BLADE FOR GL INSERTS, FOR MS-EN TOOL HOLDER_GLS BS

How to read the ordering code (example: GL2-S29CBS)

• GL: tool group (Pramet GL grooving and parting-off system)
• 2: pocket size (GL2 inserts)
• S: steel shank without internal coolant
• 29: shank height H in mm
• C: blade total length LF = 50 mm
• BS: modular blade

Compatible MS-EN modular tool holders

MS-EN-2020 K, MS-EN-2020 KS, MS-EN-2525 M, MS-EN-2525 MS, MS-EN-3225 P and MS-EN-3225 PS. The smaller holders MS-EN-1212 F and MS-EN-1616 H are not listed for GL BS blades.

Usage guidance

• Use GL inserts with the same pocket size as the blade, for example GL3-S29CBS with GL3 inserts.
• Choose a tool holder with the largest possible cross-section and the smallest possible overhang to reduce vibration.
• Apply coolant directly to the cutting edge in sufficient quantity to lower the temperature of the cutting edge and insert seat and extend tool life.
• When parting-off or deep grooving, set the cutting edge slightly above the workpiece centre line to reduce vibration.
• For parting-off and deep grooving, use inserts with PM or PR chip breakers, which form spiral-shaped chips.

The Pramet GLS BS series is a modular grooving and parting-off blade designed for GL inserts. The short blade, with a functional length (LF) of 50 mm and a shank height (H) of 29 mm, is mounted in an MS-EN modular tool holder, which is the Dormer Pramet holder for BS type grooving and parting-off blades.

Key features

• Designed for Pramet GL grooving and parting-off inserts, with pocket sizes GL2, GL3, GL4, GL5 and GL6
• Cutting width (CW) of 2.00, 3.00, 4.00, 5.00 or 6.00 mm according to pocket size
• Maximum cutting depth (CDX) of 24 mm and functional height (HF) of 24 mm on every size
• Steel shank without internal coolant; blades treated for longer tool life
• Listed by the manufacturer for finishing, medium machining and roughing, in both stable and unstable working conditions

Applications

External radial grooving and parting-off on lathes and turning centres, using GL inserts with the grade and geometry matched to the workpiece material.

Short, flat modular blade with an insert pocket at the front end that holds a GL insert. The blade is clamped in the MS-EN modular tool holder. Main dimensions (same for all sizes unless noted):

• H (shank height): 29 mm
• LF (functional length): 50 mm
• HF (functional height): 24 mm
• CDX (maximum cutting depth): 24 mm
• CW (cutting width): 2.00 / 3.00 / 4.00 / 5.00 / 6.00 mm, according to pocket size GL2 / GL3 / GL4 / GL5 / GL6

Choosing the blade size

All blades in this series share the same CDX 24 mm, H 29 mm and LF 50 mm, so the choice depends mainly on the required groove width. The pocket size in the code (GL2 to GL6) must match the size of the GL insert.

Choosing the GL insert geometry

Choosing the insert grade