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CoroTurn® Prime

All-directional turning

entry-to-workpiece.jpg

Entry to workpiece

Always use feed reduction and radius entry when going into the material. Use CoroPlus® Tool Path for PrimeTurning™ for correct programming codes and techniques.

chip-thickness.jpg

Chip thickness (hex)

Keep chip thickness constant by reducing feed for downward moves. Use CoroPlus® Tool Path for PrimeTurning™ for correct programming codes and techniques.

coolant-benefits.jpg

Coolant benefits

Under coolant is advantageous to achieve longer tool-life while over coolant is beneficial for forming thinner chips.

Application tips

Cutting data application area for​​ A-type and B-type

Depth of cut (ap)
Feed (fn)

 

Note: Using inserts at higher ap and fn leads to risk for overload and at lower ap and fn there is a risk for long chips.

cp22-2-detail-pic.jpg

Cutting data application area for A-type geometries

cutting-data-application-area-a-type-geometries.jpg

P*) Low-carbon and high-strength/ductile steel

P**) Alloy steel

M*) Austenitic stainless steel

M**) Duplex stainless steel

K*) Nodular cast iron

K**) Grey cast iron

S*) HRSA

S**) Titanium

Cutting data application area for B-type geometries

cp-22-2-cutting-data-b-type-geometries.jpg

P*) Low-carbon and high-strength/ductile steel

P**) Alloy steel

M*) Austenitic stainless steel

M**) Duplex stainless steel

K*) Nodular cast iron

K**) Grey cast iron

S*) HRSA

S**) Titanium

Recommendations

CoroTurn Prime A-type
Insert grade
Machining conditions P M K S,
HRSA		 S,
Ti
Good 4415 2025 4415 1210 H13A
Average 4425 2025 4425 1115 H13A
Difficult 2025 2025 2025 2025 1115

 

Insert geometry
Operation P* P**
 M* M**
 K* K**
 S* S**
Finishing L3 L5W L5W L3 L5W L5W L5W L3
Medium L3 L5 L5 L5 L5 L5 L5 L5

 

P*) Low-carbon and high-strength/ductile steel

P**) Alloy steel

M*) Austenitic stainless steel

M**) Duplex stainless steel

K*) Nodular cast iron

K**) Grey cast iron

S*) HRSA

S**) Titanium

CoroTurn Prime B-type
Insert grade
Machining conditions P M K S,
HRSA		 S,
Ti
Good 4415 2220 4415 1210 H13A
Average 4425 2220 4425 1115 H13A
Difficult 2025 2025 2025 2220 1115

 

Insert geometry
Operation P* P**
 M* M**
 K* K**
 S* S**
Finishing L4W M5W M5W L4W M5W M5W M7W L4W
Medium L4 M5 M5 M7 M5 M5 M5 L4
Roughing M7 M5 M5 M7 M5 M5 M7 M7

 

P*) Low-carbon and high-strength/ductile steel

P**) Alloy steel

M*) Austenitic stainless steel

M**) Duplex stainless steel

K*) Nodular cast iron

K**) Grey cast iron

S*) HRSA

S**) Titanium

First choice

Second choice
External turning
Internal turning

Side backward (SBW)

Side forward (SFW)

End backward (EBW)

Side forward (SFW)

End backward (EBW)

End forward (EFW)

Side backward (SBW)

End forward (EFW)

 

Cutting data recommendations

External turning

A-type CP-A11xx-xxx

   SBW EBW SFW EFW
fn min 0.2 (.0079) 0.2 (.0079) 0.1 (.0039) 0.1 (.0039)
fn rec 0.4 (.0157) 0.4 (.0157) 0.2 (.0079) 0.2 (.0079)
fn max 0.5 (.0197) 0.5 (.0197) 0.25 (.0098) 0.25 (.0098)
ap min 0.25 (.010) 0.25 (.010) 0.25 (.010) 0.25 (.010)
ap rec 1.5 (.059) 1.5 (.059) 1 (.039) 1 (.039)
ap max 3 (.118) 2.5 (.098) 1.5 (.059) 1.5 (.059)
KAPR 30 25 115 120
RMPX 15 10 15 10

 

B-type CP-B11xx-xxx

   SBW EBW SFW EFW
fn min 0.3 (.0118) 0.3 (.0118) 0.2 (.0079) 0.2 (.0079)
fn rec 0.6 (.0236) 0.6 (.0236) 0.35 (.0138) 0.3 (.0118)
fn max 1.2 (.0472) 1.2 (.0472) 0.6 (.0236) 0.6 (.0236)
ap min 0.5 (.020) 0.5 (.020) 0.5 (.020) 0.5 (.020)
ap rec 2 (.079) 2 (.079) 2 (.079) 2 (.079)
ap max 4 (.157) 4 (.157) 3 (.118) 3 (.118)
KAPR 25 25 95 95
RMPX 23 23 23 23

 

Internal turning

A-type CP-A11xx-xxx

   SBW EBW SFW EFW
fn min 0.2 (.0079) 0.2 (.0079) 0.1 (.0039) 0.1 (.0039)
fn rec 0.4 (.0157) 0.4 (.0157) 0.2 (.0079) 0.2 (.0079)
fn max 0.5 (.0197) 0.5 (.0197) 0.25 (.0098) 0.25 (.0098)
ap min 0.25 (.010) 0.25 (.010) 0.25 (.010) 0.25 (.010)
ap rec 1.5 (.059) 1.5 (.059) 1 (.039) 1 (.039)
ap max 2.5 (.098) 3 (.118) 1.5 (.059) 1.5 (.059)
KAPR 25 30 120 115
RMPX 10 15 10 15

 

B-type CP-B11xx-xxx

   SBW/EBW SFW EFW
fn min 0.3 (.0118) 0.2 (.0079) 0.2 (.0079)
fn rec​ 0.6 (.0236) 0.3 (.0118) 0.35 (.0138)
fn max 1.2 (.0472) 0.6 (.0236) 0.6 (.0236)
ap min 0.5 (.020)​ 0.5 (.020) 0.5 (.020)
ap rec 2 (.079) 2 (.079) 2 (.079)
ap max 4 (.157) 3 (.118) 3 (.118)
KAPR 25 95 95
RMPX 23 23 23

 

Where to apply PrimeTurning™

External turning

Best suited for short and compact components and slender ones using tail stock

Suitable

Not suitable
Short and compact com​ponents​ Components without tail-stock
 
Components with tail-stock  
 

 

Minimum diameter

Clearance on the insert and holders makes it difficult to start at less D min3 diameter in EBW (End backward) direction. However there are no limits when facing in EFW (End forward) direction i.e. conventional way.

cp22-2-clearance-ccw.jpg
  D mi​n3
EBW​​ EFW
A-type 3​0 (1.18") 0
B-type 3​0 (1.18") 0

 

Internal turning

CoroTurn® Prime SL heads can be used for internal turning of diameters above 40 mm (1.575 inch) and overhangs up to 8–10​×D

cp22-2-internal-turning-dmin1.jpg

Ensure optimal performance and avoid issues by considering Dmin when using Silent Tools boring bars. Tangential and radial deflection, influenced by bar design, overhang, and cutting force, can lead to clearance loss.


Highlights

Optimize your tool path

Optimize your tool path

The CoroPlus® Tool Path software is updated with many new features to secure maximum output for your PrimeTurning™ applications. Try out the one-month free trial of the CoroPlus® Tool Path software and see it for yourself!

The geometry for finishing operations in ductile materials

The geometry for finishing operations in ductile materials

The -L4 geometry is optimized for machining low-carbon and high-strength steel, duplex stainless steel and titanium at low to medium feed rates. The geometry delivers outstanding productivity even at lower feed rates, due to increased cutting speed and/or longer tool life compared to conventional turning.

    The geometry for difficult-to-machine materials

    The geometry for difficult-to-machine materials

    Achieving good chip control has always been difficult in low-carbon and high-strength steels. The -H3 geometry is optimized for these materials, eliminating concerns about chip control.

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