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 f_z to maintain productivity and reduce cost

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

Choose the right pitch

Maximum chip thickness

For maximum productivity, use h_ex value for f_z calculations.

Calculating cutting parameter according to right h_ex 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 (f_n), 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
		f_z (feed per tooth), mm (inch)			f_z (h_ex), 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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Sandvik Coromant

Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era. Educational support, extensive R&D investment and strong customer partnerships ensure the development of machining technologies that change, lead and drive the future of manufacturing. Sandvik Coromant owns over 1,800 patents worldwide, employs over 7,600 staff, and is represented in 150 countries.

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CoroMill® 345