DIN 844-(A-B) L-M-N long face milling cutter with center blades with cylindrical shank for machining steel, cast iron

4-cutter with flat face	Angle of inclination of the screw line of the chip groovesλ=30°	Directions of the tool's work	Cylindrical shank smooth in accordance with DIN 1835-A	Weldon shank to DIN 1835-B
Tool made of HSS steel	Tool made of HSS-E steel	Coating on the cutting part	General purpose cutters	Coating on the cutting part
	Tool made of PM HSS-E steel

HSS/HSS-E
	Non-alloy steels	Non-alloy and alloy steels	Cast Iron Gray	Ductile Iron, Malleable Cast Iron
PM HSS-E
	Non-alloy steels	Non-alloy and alloy steels	Alloy steels	Stainless and Acid-Resistant Steels	Stainless and Acid-Resistant Steels with Elevated Chromium and Nickel Content	Cast Iron Gray	Ductile Iron, Malleable Cast Iron

Of course, I will explain the designations used in the description of the DIN 844-(A-B) L-M-N spindle burr:

1. DIN 844: This refers to a German industry standard that defines specifications for cutting tools, including milling cutters. DIN 844 covers face milling cutters, which are commonly used in machining.

2. (A-B): These letters refer to different variations in cutter design. They can denote differences in geometry, blade shape or other parameters that affect how the tool processes material.

3. L-M-N: These are designations that can refer to various features and parameters of the cutter, such as tool length, blade type, coating or other technical characteristics. Here are some possible interpretations:

- L: Indicates the length of the tool. In the case of an arbor cutter, "L" can indicate the long dimension of the tool, which can be useful for machining deep holes or materials with large thicknesses.

- M: The "M" designation may indicate a particular type of blade or cutter geometry that affects how the tool processes material.

- N: This can mean various technical features, such as tool coating or other properties that affect the performance and durability of the cutter.

4. Cylindrical face long burr with center blades with cylindrical shank: This is a description of the tool itself. A cylindrical-shank milling cutter is a cutting tool used for milling operations in which the blades are located along the tool's axis. The center blades are the key elements of the cutter, which are responsible for removing material. A cylindrical shank is a type of tool holder that provides a stable hold and enables smooth milling.

All of these designations together define the specifications and characteristics of DIN 844-(A-B) L-M-N face milling cutters, which helps the user select the right tool for a specific machining application.