# TECHNICAL SPECIFICATIONS

## Materials

Standard cutters are made of high speed steel and can be made of cobalt upon request. Our Carbide woodruffs are made of solid carbide. Carbide tipped cutters on a steel body are also available.

### Coatings

We can provide a variety of coatings depending on your requirements.

## Milling Cutter Information

Tolerances | |
---|---|

Outside Diameter: | -.005 +.050 |

Width: | +/-.0005 |

### Side Clearance

Cutters without side teeth: ½° (Plain Mills and Woodruff Keyway Cutters)

Cutters with side teeth: 3-1/2°

### Overlapping Side Milling Cutter Information

The total width of the two sections and not the diameter determines the size of the overlap placed on the cutter.

### Overlapping Side Milling Cutter Specifications

Cutter Width | Overlap Used | Expanded Width | Cutter Diameter | Total Width |
---|---|---|---|---|

3/8” to ½” | 1/32” | Approximately 1/16” | 3” | 3/8” to 3” |

½” to 7/8” | 1/16” | Approximately 1/8” | 4” | 7/16” to 3” |

7/8” to 1-1/2” | 3/32” | Approximately 3/16” | 5” and 6” | ½” to 3” |

1-1/2” to 3” | 1/8” | Approximately ¼” | Over 6” | 9/16” to 3” |

Overlapping cutter of widths greater than 3” can be made from 3 or more sections depending on width.

### All Arbor Type Cutters other than Overlapping Side Milling Cutters

Cutter Diameter | Total Width |
---|---|

3” | 1/8” to 1-1/4” |

4” | 1/8” to 1-1/4” |

5” and 6” | 3/16” to 1-1/2” |

Over 6” | ¼” to 1-1/2” |

Please note: The diameter of the cutter determines the width of all types of Aber Curved tooth milling cutters.

## Rules for Determining Speeds and Feeds

To Find | Having | Rule | Formula |
---|---|---|---|

Speed of cutter in Feet per Minute (FPM) | Diameter of cutter and Revolutions per Minute | Diameter of cutter (In.) multiplied by 3.1416, multiplied by Revolutions per Minute, divided by 12 | D x π x RPM/12=FPM |

Revolutions per Minute (RPM) | Feed per Minute and Diameter of Cutter | Feet per Minute, divided by circumference of cutter in feet (Diameterx3.1416/12) | FPM/D x π/12=RPM |

Feed per Revolution (FR) | Feed per Minute and Revolutions per Minute | Feed per Minute, divided by Revolutions per Minute | F/RPM=FR |

Feed per Tooth per Revolution (FTR) | Feed per Minute and number of teeth in cutter | Feed per Minute (in.) divided by number of Teeth per Minute (number of teeth in cutter x Revolutions per Minute) | F/ (T x RPM)= FTR |

Feed per Minute (F) | Feed per Tooth per Revolution, number of teeth in cutter, and Revolutions per Minute | Feed per Tooth per Revolutions multiplied by number of teeth in cutter, multiplied by Revolutions per Minute | FTR x T x RPM=F |

Feed per Minute (F) | Feed per Revolutions and Revolutions per Minute | Feed per Revolution multiplied by Revolutions per Minute | FR x RPM=F |

Number of Teeth per Minute (TM) | Number of teeth in cutter and Revolutions per Minute | Number of teeth in cutter multiplied by Revolutions per Minute | T x RPM=TM |

RPM=Revolutions per minute | TM=Teeth per minute | T=Teeth in cutter | F=Feed per minute |

D=Diameter of cutter | FR=Feed per revolution | FTR=Feed per tooth per revolution | FPM=Speed of cutter in feed per minute |