Boring Bar Screw clamp



  • Manufactured from High Tensile Steel to provide better yield strength under heavy working conditions.
  • Used for cutting operations inside bores and pipes.
  • The screw holds the positive 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 Screw 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°

SCLCR/L

 

 

 

S08H SCLCR/L06 08 100 9.5

CCXX 06 02XX

S10K SCLCR/L06 10 125 11.5
S12M SCLCR/L06 12 150 14.5
S12M SCLCR/L09 12 150 15

CCXX 09 T3

 

 

S16Q SCLCR/L09 16 180 17.5
S20R SCLCR/L09 20 200 21.5
S25R SCLCR/L09 25 200 27.5
S32S SCLCR/L09 32 250 34.5
S40T SCLCR/L09 40 300 43
S50U SCLCR/L09 50 350 53
APPROACH ANGLE 75°

SCKCR/L

 

S08H SCKCR/L06 08 100 9.5

CCXX 06 02XX

S10K SCKCR/L06 10 125 11.5
S12M SCKCR/L06 12 150 14.5
S12M SCKCR/L09 12 150 15

CCXX 09 T3

S16Q SCKCR/L09 16 180 17.5
S20R SCKCR/L09 20 200 21.5
S25R SCKCR/L09 25 200 27.5
S32S SCKCR/L09 32 250 34.5
APPROACH ANGLE 93°

SCZCR/L

S12M SCZCR/L06 12 150 17

CCXX 06

S16Q SCZCR/L09 16 180 21

CCXX 09

S20R SCZCR/L09 20 200 25
APPROACH ANGLE 107.5°

SDQCR/L

 

S10K SDQCR/L07 10 125 14

DCXX 07 02XX

S12M SDQCR/L07 12 150 16
S16Q SDQCR/L11 16 180 19

DCXX 11 T3

S20R SDQCR/L11 20 200 25
S25R SDQCR/L11 25 200 32
S32S SDQCR/L11 32 250 40
S40T SDQCR/L11 40 300 50
APPROACH ANGLE 93°

SDUCR/L

 

S10K SDUCR/L07 10 125 14

DCXX 07 02XX

S12M SDUCR/L07 12 150 16
S16Q SDUCR/L11 16 180 19

DCXX 11 T3

S20R SDUCR/L11 20 200 25
S25R SDUCR/L11 25 200 32
S32S SDUCR/L11 32 250 40
S40T SDUCR/L11 40 300 50
APPROACH ANGLE 3°

SDXCR/L

 

S10K SDXCR/L07 10 125 14

DCXX 07 02XX

S12M SDXCR/L07 12 150 16
S16Q SDXCR/L11 16 180 19

DCXX 11 T3

S20R SDXCR/L11 20 200 25
S25R SDXCR/L11 25 200 32
S32S SDXCR/L11 32 250 40
S40T SDXCR/L11 40 300 50
APPROACH ANGLE 93°

SDZCR/L

 

S12M SDZCR/L07 12 150 17

DCXX 07 02XX

S16Q SDZCR/L07 16 180 21
S16Q SDZCR/L11 16 180 21

DCXX 11 T3

S20R SDZCR/L11 20 200 25
S25R SDZCR/L11 25 200 32
S32S SDZCR/L11 32 250 36
S40T SDZCR/L11 40 300 44
APPROACH ANGLE 62.5°

SD-CR/L

 

S10K SD-CR/L07 10 125 15

DCXX 07 02XX

S12M SD-CR/L07 12 150 17
S16Q SD-CR/L11 16 180 21

DCXX 11 T3

S20R SD-CR/L11 20 200 25
S25R SD-CR/L11 25 200 32
APPROACH ANGLE 91°

STFCR/L

 

S10K STFCR/L09 10 125 13

TCXX 0902XX

S12M STFCR/L09 12 150 17
S12M STFCR/L11 12 150 17

TCXX 11 02XX

S16Q STFCR/L11 16 180 21
S20R STFCR/L11 20 200 25
S20R STFCR/L16 20 200 25

TCXX 16 T3

S25R STFCR/L16 25 200 32
APPROACH ANGLE 60°

STWCR/L

 

S12M STWCR/L11 12 150 17

TCXX 11 02XX

S16Q STWCR/L11 16 180 21
S20R STWCR/L11 20 200 25
S20R STWCR/L16 20 200 25

TCXX 16 T3

S25R STWCR/L16 25 200 32
S32S STWCR/L16 32 250 40
APPROACH ANGLE 93°

STUCR/L

 

S10K STUCR/L09 10 125 13

TCXX 0902XX

S12M STUCR/L09 12 150 17
S12M STUCR/L11 12 150 17

TCXX 11 02XX

S16Q STUCR/L11 16 180 21
S20R STUCR/L11 20 200 25
S20R STUCR/L16 20 200 25

TCXX 16 T3

S25R STUCR/L16 25 200 32
S32S STUCR/L16 25 250 40
APPROACH ANGLE 52°

SVJCR/L 

SVJBR/L

 

 

S12/10J SVJCR 12 150 16

VCX 08 02XX

S16Q SVJCR 16 180 20
S20R SVJCR 20 200 25

VBCX 11 03XX

S25R SVJCR 25 200 30
APPROACH ANGLE 93°

SWUBR/L 

 

 

 

 

S10H SWUBR/L 0606-10 10 10 6

WBMT

 

 

 

 

S10H SWUBR/L 0606-15 10 15 6
S10H SWUBR/L 0606-18 10 18 6
S10H SWUBR/L 0606-21 10 21 6
S10H SWUBR/L 0606-25 10 25 6
S10H SWUBR/L 0606-10 10 10 7
S10H SWUBR/L 0606-15 10 15 7
S10H SWUBR/L 0606-18 10 18 7
S10H SWUBR/L 0606-21 10 21 7
S10H SWUBR/L 0606-25 10 25 7
APPROACH ANGLE 93°

SVUNR/L 

 

 

 

S16Q SVUNR/L12 16 180 21

VNMX 12

 

S20R SVUNR/L12 20 200 25
S25R SVUNR/L12 25 200 32
S32S SVUNR/L12 32 250 40
APPROACH ANGLE 107.5°

SVQNR/L 

 

 

 

S16Q SVQNR/L12 16 180 21

VNMX 12

 

S20R SVQNR/L12 20 200 25
S25R SVQNR/L12 25 200 32
S32S SVQNR/L12 32 250 40