Skip to main content
WhizIn

Internal turning

Maintain consistent performance in internal turning under demanding conditions. The WhizIn boring bar is clamped at an angle to perfect your internal machining operation.
Menu
Home / Cutting tools / Internal turning

Excel in internal turning with WhizIn

WhizIn boring bars are designed to tackle the common challenges of internal turning with exceptional efficiency. Leave the challenges of internal turning in Swiss machining behind! Use WhizIn and forget about vibrations and inadequate chip evacuation wich can cause insert breakages and poor surface finish.

Benefits of WhizIn internal turning tool

  • Unique chip control geometries: Achieve precise control down to the smallest dimensions.
  • Increased tool life: Additional material at critical points significantly enhances tool life.
  • Improved surface finish: Optimized stability and extra material contribute to a superior surface finish.
  • Wide selection: A broad range of tool holders, including options with through-coolant capabilities.
WhizIn internal turning holder and boring bar

Consistent and reliable boring tool

With its robust construction and innovative design, WhizIn boring bars deliver consistent, high-quality results. The reduced vibrations and improved stability lead to better surface finishes and fewer insert breakages, addressing the two major challenges in internal turning.

WhizIn boring bars have up to 50% more material at the critical point compared to conventional boring bars. This added material significantly enhances the strength and stability of the tool, reducing deflection and vibrations during machining.

The boring bar is clamped into the toolholder at an angle, which optimizes the distribution of cutting forces and further stabilizes the tool. This design helps in maintaining consistent performance even under demanding conditions.

The design of WhizIn boring bars requires minimal grinding, which not only saves time but also reduces grinding-induced stress. This results in a more consistent and reliable tool, enhancing overall productivity and tool life.

WhizGuide

Minimum hole

Minimum bore hole size

The minimum bore hole size is determined by the depth the tool reaches within the smaller hole, due to the innovative angular mounting of the WhizIn boring tool. Achieve accuracy with the below calculation or with a simple calculation, as illustrated below the picture.

Enter your desired final hole size to find the largest suitable tool for the job.

-

Select a tool to calculate the minimum hole diameter it can produce at a given length.

-
Minimum bore size WhizIn

d min = tool d + Ld × 0,035

Product tables

Boring bars — WhizIn

Turning
Style J | Boring bars for turning
Turning
Copy turning
Style V | Boring bars for copy turning
Copy turning
Back turning
Style B | Boring bars for back turning
Back turning
Threading
Style T | Boring bars for threading
Threading
Grooving
Style G | Boring bars for straight grooves
Grooving
Grooving & chamfering
Style P | Boring bars for grooving and chamfering - before parting off
Grooving & chamfering
Face grooving
Style A | Boring bars for face grooving
Face grooving
Tool Diagram Centre line of toolholder End of toolholder

Boring bars for internal turning | Style J

Filter boring bars:

Boring barDdd at max depthRake angleRfLl10MB10C10F10ND10
C31NR J8-030,80,98°00,4244●●○●-
C314NR J8-031,41,58°00,7244●●○●-
C32NR J8-031,61,88°00,8247●●○●-
C32NR J16-031,61,816°00,8247●●○●-
C33NR J8-032,22,68°01,12410●●○●○
C33NR J16-032,22,616°01,12410●●○●-
C33NR J8-132,22,68°0,11,12410●●○●○
C33NR J16-132,22,616°0,11,12410●●○●-
C34NR J8-0333,48°01,52412●●○●○
C34NR J16-0333,416°01,52412●●○●-
C34NR J8-1333,48°0,11,52412●●○●○
C34NR J16-1333,416°0,11,52412●●○●-
C4NR J8-0444,68°023216,5●●○●●
C4NR J16-0444,616°023216,5●●○●-
C4NR J8-1444,68°0,123216,5●●○●●
C4NR J16-1444,616°0,123216,5●●○●-
C5NR J8-0555,78°02,54021●●○●●
C5NR J16-0555,716°02,54021●●○●-
C5NR J8-1555,78°0,12,54021●●○●●
C5NR J8-2555,78°0,22,54021●●○●●
C5NR J16-1555,716°0,12,54021●●○●-
C6NR J8-0666,78°034826●●○●●
C6NR J16-0666,716°034826●●○●-
C6NR J8-1666,78°0,134826●●○●●
C6NR J16-1666,716°0,134826●●○●-
C6NR J8-2666,78°0,234826○○○○○
C8NR J8-0889,28°047245●●○●●
C8NR J16-0889,216°047245●●○●-
C8NR J8-1889,28°0,147245●●○●●
C8NR J16-1889,216°0,147245●●○●-
C8NR J8-2889,28°0,247245○○○○○
Style J | Boring bars for turning
WhizIn boring bar style J for turning

Boring bars for internal copy turning | Style V

Filter boring bars:

Ddd at max depthRake angleARfLl10MB10C10F10
C32NR V831,61,88°0,50,050,8247●●○●
C33NR V832,22,68°0,70,071,12410●●○●
C3NR V8333,48°10,11,52412●●○●
C4NR V8444,68°1,40,1523216,5●●○●
C5NR V8555,78°1,70,22,54021●●○●
C6NR V8666,78°20,2534826●●○●
C8NR V8889,28°2,70,347245●●○●
Style V | Boring bars for copy turning
WhizIn boring bar style V for turning

Boring bars for internal back turning | Style B

Filter boring bars:

Boring barDdd at max depthABfLl10MB10C10F10
C3NR B12-1-0333,410,751,52411●●○●
C4NR B12-1,4-0444,61,4123216,5●●○●
C5NR B12-1,7-0555,71,71,252,54021●●○●
C6NR B12-2-0666,721,534827●●○●
C8NR B12-2,7-0889,22,71,847245●●○●
Style B | Boring bars for back turning
WhizIn boring bar style B for back turning

Boring bars for internal threading | Style T

Filter boring bars:

Boring barDdd at max depthVPitchtfLl10MB10C10F10ND10
C306 T6030,60,760°0,1-0,20,10,3243●○-○-
C31NR T6030,80,960°0,2-0,40,20,5244●●○●-
C32NR T6031,61,860°0,2-0,60,30,75247●●○●-
C33NR T6032,22,660°0,2-0,80,41,252410●●○●-
C34NR T60333,460°0,2-1,00,51,52412●●○●-
C4NR T60444,660°0,25-1,250,623216,5●●○●○
C4NR T55444,655°0,25-1,250,623216,5○○○○-
C5NR T60555,760°0,25-1,50,72,54021●●○●○
C6NR T60666,760°0,25-1,750,834827●●○●○
C6NR T55666,755°0,25-1,750,834827○○○○-
C8NR T60889,260°0,35-2,51,247245●●○●○
Style T | Boring bars for threading
WhizIn boring bar style T for threading

Boring bars for internal grooving | Style G

Filter boring bars:

Boring barDdd at max depthBAfLl10MB10C10F10
C31NR G0,230,80,90,20,30,4244●●○●
C32NR G0,331,61,80,30,50,8247●●○●
C33NR G0,532,22,60,50,71,12410●●○●
C34NR G0,2333,40,20,31,52412●●○●
C34NR G0,5333,40,50,81,52412●●○●
C34NR G0,8333,40,811,52412●●○●
C34NR G1,0333,4111,52412●●○●
C4NR G0,5444,60,50,823216,5●●○●
C4NR G1,0444,611,323216,5●●○●
C5NR G0,5555,70,50,82,54021●●○●
C5NR G1,0555,711,52,54021●●○●
C5NR G1,5555,71,51,52,54021●●○●
C6NR G0,7666,70,71,334826●●○●
C6NR G1,0666,711,334826●●○●
C6NR G1,5666,71,5234826●●○●
C6NR G2,0666,72234826●●○●
C8NR G1,0889,211,747245●●○●
C8NR G1,5889,21,52,247245●●○●
C8NR G2,0889,222,747245●●○●
C8NR G2,5889,22,52,747245●●○●
Style G | Boring bars for straight grooves
WhizIn boring bar style G for grooving

Boring bars internal for grooving and chamfering – before parting off | Style P

Filter boring bars:

Boring barDdd at max depthBACfLl10MB10C10F10
C3NR P0,8333,40,80,80,11,52412●●○●
C4NR P1,0444,6110,123216,5●●○●
C5NR P1,0555,711,30,22,54021●●○●
C6NR P1,0666,711,50,234826●●○●
C8NR P1,5889,21,520,347245●●○●
Style P | Boring bars for grooving and chamfering - before parting off
WhizIn boring bar style P for grooving and chamfering before parting off

Boring bars for face grooving | Style A

Filter boring bars:

Boring barDBALl10MB10C10F10
C3NR A8-3-0730,70,8186●●○●
C4NR A8-4-10411,2523,58●●○●
C5NR A8-5-1251,21,52910●●○●
C6NR A8-6-1561,523412●●○●
C8NR A8-8-20822,54316●●○●
Style A | Boring bars for face grooving
WhizIn boring bar style A for face grooving