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CoroMill® 345

Machining with wiper inserts

  • Use the same grade for the wiper insert and the working inserts
  • To ensure the desired effect of wiper inserts, use ground working inserts

Internal coolant

​Use internal coolant for best surface finish when machining stainless steel. Apply a coolant screw for internal coolant capability.

Shim mounting

  • Position the shim with mounting indicators towards the tool body
  • Use lubrication when mounting the shim screw

Torque value

Insert screw: 3.0 Nm (26.5 in-lbs)
Shim screw: 6.0 Nm (53 in-lbs)

Application tips

How to choose the right pitch

It is always important to select the suitable pitch with the right properties for the operation.

• When machining in ISO P, use L or M pitch cutters with high fz to maintain productivity and reduce cost

• The even H and HX pitches generate a smoother sound compared to differential cutters

Maximum chip thickness

For maximum productivity, use hex value for fz calculations.

Calculating cutting parameter according to right hex value will ensure good cutting action with better surface quality and tool life.

Finishing with wiper inserts

Excellent surface finish can be achieved with standard inserts in combination with one or more wiper inserts. Wiper inserts work most usefully to perform best at a high feed per revolution (fn), in larger diameter cutters with extra close pitch and setting facilities.

Keep the cutter engaged

The position of the cutter in relation to the workpiece engagement and the contact which the cutter teeth have are vital factors for a successful operation.

Recommendations

Difficult conditions

 

L

Limited stability and power
Long overhang

Average conditions

 

M

General purpose


Good conditions

 

H

Good stability and power
Short chipping materials

Excellent conditions

 

HX

Excellent stability and power
Short chipping materials




First choice insert

Roughing M-PH 4330 T5M-MM 2040 M-KH 3330 T5E-MM S40T M-PH 1010
Medium M-PM 4330 T5E-MM 2040 M-KM 3330 T5E-MM S30T M-PM 1010
Finishing E-PL 1130 T5E-ML 1040 E-KL 1020 T5E-ML S30T E-PL 1010
P M K S H

Cutting data

Geometry ISO CoroMill® 345
fz (feed per tooth), mm (inch) fz (hex), mm (inch)
Min Start Max Min Start Max
345R-1305X-KL ISO K 0.07 (0.003) 0.16 (0.006) 0.22 (0.009) 0.05 (0.002) 0.11 (0.004) 0.16 (0.006)
345R-1305X-KM ISO K 0.16 (0.006) 0.30 (0.012) 0.40 (0.016) 0.11 (0.004) 0.21 (0.008) 0.28 (0.011)
345R-1305X-KH ISO K 0.25 (0.010) 0.35 (0.014) 0.55 (0.022) 0.18 (0.007) 0.25 (0.010) 0.39 (0.015)
               
345R-13T5X-ML ISO M/S 0.07 (0.003) 0.11 (0.004) 0.20 (0.008) 0.05 (0.002) 0.08 (0.003) 0.14 (0.006)
345R-13T5X-MM ISO M/S 0.15 (0.006) 0.20 (0.008) 0.45 (0.018) 0.11 (0.004) 0.14 (0.006) 0.32 (0.013)
               
345R-1305X-PL ISO-P/H 0.07 (0.003) 0.17 (0.007) 0.21 (0.008) 0.05 (0.002) 0.12 (0.005) 0.15 (0.006)
345R-1305X-PM ISO-P/H 0.15 (0.006) 0.25 (0.010) 0.40 (0.016) 0.11 (0.004) 0.18 (0.007) 0.28 (0.011)
345R-1305X-PH ISO-P/H 0.25 (0.010) 0.40 (0.016) 0.55 (0.022) 0.18 (0.007) 0.28 (0.011) 0.39 (0.015)

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