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REAMING | ALVAN® Reaming Systems by S.C.A.M.I.®

Lead-in Angle Information

XTP TAP TAS HPU APX 4TX REV OPN SSD ACP BTA WHL CRT ALV BRN THM

Straight Flute

Lead-in

Angles

Chip Evacuation

Description

Lead-in can be used to improve finish.

A

45°

Straight

8°

Can be used for stock removal at the bottom of the hole. Reduce the feed by 40% of the values on the recommended cutting data pages.

90°

F

Standard and suitable for most materials.

G

45°

May provide improved straightness. Reduce the feed by 40% of the values on the recommended cutting data pages.

75°

L

Ideal for through holes. It is possible to increase the feed up to 100% of the values on the recommended cutting data pages.

N

20°

Suitable for titanium based alloys.

T

30°

Suitable for most materials and increases tool life

V

45°

Excellent at breaking small chips that are easy to evacuate in blind hole applications. Requires 50% increased feed rate, which will result in reduced tool life when compared to other leads.

K

80°

0.10x45°

Helical Flute (Left-Hand) - Through Hole Applications Only

Lead-in

Angles

Chip Evacuation

Description

Standard and suitable for most materials.

E

NOTE: Through hole applications only.

Helical

25°

May provide better penetration rates in steels over 200 BHN.

M

45°

NOTE: Through hole applications only.

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