Boring Bar A/D-Clamp



  • Manufactured from High Tensile Steel to provide better yield strength under heavy working conditions.
  • Used for cutting operations inside bores and pipes.
  • The clamp holds the negative type insert rigidly in place for stability during operations.
  • The inserts can be easily and rapidly replaced once worn down thus saving machining time and cost.
  • Rust preventive black oxide finish.
  • Inserts can be provided on request.
Boring Bar A/D-Clamp

Nomenclature

Boring bars are used for material removal from the internal surface of the workpiece through operations like longitudinal turning in order to obtain the required bore diametre, length and contour.They are available in a number of shapes and sizes each having their distinguish entering/lead angle, seat inclination angle and clamp styles. 

Effects of cutting geometry

Nose Radius

The angle formed between the main and the auxiliary cutting edge of the insert is called the nose radius. The larger the angle, higher is the cutting edge strength of the insert. Thus a higher nose radius is preffered for roughing operations. However, large nose radius also gives rise to higher distribution of cutting forces, both axially and radially, therefore increasing the power consumption as well as the vibration tendencies. Inserts with smaller nose angles are prefered for finishing, profiling or for turning intricate contours inaccessible to larger radii.

Holder shapes

Different holders are available for different entering angles and insert clearances. 

Rigid and lever clamping methods facilitate mounting of negative inserts (N) or inserts with 0° clearance angle, whereas screw clamping methods facilitates the clamping of N type inserts as well as inserts with some positive clearance angle.

Positive inserts consume lower power for material removal and exert lower forces. As the clearance angle increases, the strength of the cutting edge decreases. Negative inserts on the other hand provides higher edge strength but consume more power and exert higher cutting forces.

Type Size

Dimension

(mm)

Carbide Insert

Action

H L D
APPROACH ANGLE 95°

ACLNR/L

 

S25R ACLNR/L12 25 200 32

CNMX 1204XX

S32S ACLNR/L12 32 250 40
S40T ACLNR/L12 40 300 50
S50U ACLNR/L12 50 350 63
APPROACH ANGLE 95°

AWLNR/L

 

S25R AWLNR/L06 25 200 32

WNMX 0604XX

S25R AWLNR/L08 32 200 40

WNMX 0804XX

S32S AWLNR/L08 32 250 40
S40T AWLNR/L08 40 300 50
APPROACH ANGLE 75°

ASKNR/L

S25R ASKNR/L12 25 200 32

SNMX 1204XX

S32S ASKNR/L12 32 250 40
S40T ASKNR/L12 40 300 50
APPROACH ANGLE 107.5°

ADQNR/L

 

S25R ADQNR/L11 25 200 32

DNMX 1104XX

S25R ADQNR/L15 25 200 32

DNMX 1506XX

S32S ADQNR/L15 32 250 40
S40T ADQNR/L15 40 300 50
APPROACH ANGLE 93°

ADUNR/L

 

S25R ADUNR/L11 25 200 32

DNMX 1104XX

S25R ADUNR/L15 25 200 32

DNMX 1506XX

S32S ADUNR/L15 32 250 40
S40T ADUNR/L15 40 300 50
APPROACH ANGLE 93°

AVUNR/L

S25R AVUNR/L16 25 200 32

VNMX 1604XX

S32S AVUNR/L16 32 250 40
S40T AVUNR/L16 40 300 50