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ALLIED MACHINE & ENGINEERING | NOMENCLATURE

ALVAN® Reamer Overview REAMER LEAD-INS

COATINGS

Lead-In

Angle

Chip EvacuaƟon DescripƟon Straight Flute - Through and Blind Holes

Uncoated • Ideal for nonferrous applications.

45°

A

Lead-in can be used to improve finish.

8°

TiN • Ideal for general purpose applications.

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

90°

F

TiCN • Provides improved surface finish.

45°

G

Standard and suitable for most materials.

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

75°

L

TiAlN • Provides higher heat resistance to improve tool life.

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

N

20°

Alcrona • Provides excellent wear resistance and can help increase cutting speeds.

30°

T

Suitable for Ɵtanium based alloys.

Suitable for most materials and increases tool life.

Hardcut • Ideal for cast iron and hardened steel applications.

45°

V

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

K

80°

0.10x45°

R Coating • Improved tool life in cast iron materials.

Helical Flute (Right-Hand) - Blind Hole ApplicaƟons Only

E

Standard and suitable for most materials.

25°

T Coating • Optimized tool life in titanium and very hard materials.

May provide beƩer penetraƟon rates in steels over 200 BHN.

45°

M

CUTTER MATERIAL

80° Excellent at breaking small chips that are easy to evacuate in blind hole applicaƟons. Requires 50% increased feed rate, which will result in reduced tool life. Helical Flute (LeŌ-Hand) - Through Hole ApplicaƟons Only 0.10x45°

K

Material

Details

A fine-grain carbide suitable for all convenƟonal reaming applicaƟons. Recommended where rigidity is not excellent and speeds must be reduced. Cermet provides high wear resistance and is recommended for abrasive and increased speed applicaƟons. Not recommended for poor rigidity or interrupted cuts.

Carbide

E

Standard and suitable for most materials.

25°

May provide beƩer penetraƟon rates in steels over 200 BHN.

45°

M

Cermet

23

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