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American Heller's RETU Drills are used for reaming operations. Reaming is drilling operation used for light stock removal at high feeds and speeds. Reaming is similar to counter-boring with the exception that there is more stock removal in counter-boring operations.
For holes larger than 1.375" we recommend our standard line of BTA Indexable Reamers
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Consider these unique advantages of American Heller's Brazed Reaming Heads (RETU)
- Tools sizes between .724-2.559" are available for quick delivery
- Tools produced to an accuracy of ±.0005" on diameter resulting in closer tolerance holes
- Carbide inserts can be resharpened when they are worn
- Various grades available for drilling different materials
- 4 premium grades of coating for optimum tool life
- Available with either a 45 or 20 degree lead angle
- Available in either 'chip forward' or 'chip back' designs
- The 'chip forward' design is readily adaptable to gun-drilling machines without modification
Note:
Hole tolerances, concentricity, surface finish and runout will be affected by a number of factors including machine condition, alignment, boring bar straightness, bushing size, etc.
General Information
American Heller's RETU reamers are for use with the DTS drilling system. For more information on the DTS drilling system please refer to our Drilling Information Page. RETU reamers have an external/OD thread and are available in either 'chip forward' or 'chip back' designs. The 'chip forward' design is ideal for reaming through holes while the 'chip back' design is ideal for reaming blind holes or through holes. The following table shows the different tool ranges and the standard boring bar/drill tube that they are used with.
| PART NO. |
DIA (INCH) |
DEPTH OF CUT PER SIDE |
BAR/TUBE |
PART NO. |
DIA (INCH) |
DEPTH OF CUT PER SIDE |
BAR/TUBE |
| RETU -001 |
0.724 - 0.756 |
0.039 |
800-DTS |
RETU -083 |
1.512 - 1.559 |
0.118 |
808-DTS |
| RETU -002 |
0.757 - 0.787 |
0.039 |
800-DTS |
RETU -091 |
1.560 - 1.598 |
0.118 |
809-DTS |
| RETU -011 |
0.788 - 0.822 |
0.079 |
801-DTS |
RETU -092 |
1.599 - 1.645 |
0.118 |
809-DTS |
| RETU -012 |
0.823 - 0.858 |
0.079 |
801-DTS |
RETU -093 |
1.646 - 1.692 |
0.118 |
809-DTS |
| RETU -021 |
0.859 - 0.901 |
0.079 |
802-DTS |
RETU -101 |
1.693 - 1.744 |
0.118 |
810-DTS |
| RETU -022 |
0.902 - 0.948 |
0.079 |
802-DTS |
RETU -102 |
1.745 - 1.795 |
0.118 |
810-DTS |
| RETU -031 |
0.949 - 0.992 |
0.079 |
803-DTS |
RETU -103 |
1.796 - 1.850 |
0.118 |
810-DTS |
| RETU -032 |
0.993 - 1.039 |
0.079 |
803-DTS |
RETU -111 |
1.851 - 1.909 |
0.118 |
811-DTS |
| RETU -041 |
1.040 - 1.082 |
0.079 |
804-DTS |
RETU -112 |
1.910 - 1.972 |
0.118 |
811-DTS |
| RETU -042 |
1.083 - 1.129 |
0.079 |
804-DTS |
RETU -113 |
1.973 - 2.035 |
0.118 |
811-DTS |
| RETU -051 |
1.130 - 1.173 |
0.079 |
805-DTS |
RETU -121 |
2.036 - 2.094 |
0.118 |
812-DTS |
| RETU -052 |
1.174 - 1.220 |
0.079 |
805-DTS |
RETU -122 |
2.095 - 2.153 |
0.118 |
812-DTS |
| RETU -061 |
1.221 - 1.263 |
0.118 |
806-DTS |
RETU -123 |
2.154 - 2.212 |
0.118 |
812-DTS |
| RETU -062 |
1.264 - 1.311 |
0.118 |
806-DTS |
RETU -131 |
2.213 - 2.299 |
0.118 |
813-DTS |
| RETU -071 |
1.312 - 1.370 |
0.118 |
807-DTS |
RETU -132 |
2.300 - 2.385 |
0.118 |
813-DTS |
| RETU -072 |
1.371 - 1.425 |
0.118 |
807-DTS |
RETU -133 |
2.386 - 2.472 |
0.118 |
813-DTS |
| RETU -081 |
1.426 - 1.468 |
0.118 |
808-DTS |
RETU -134 |
2.472 - 2.559 |
0.118 |
813-DTS |
| RETU -082 |
1.469 - 1.511 |
0.118 |
808-DTS |
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American Heller's RETU Reamers are available in a variety of different grades for drilling different materials. The table below shows the available grades and the part material that they should be used with. The TA grade is the default grade for American Heller's RETU Reamers. Special TIN and Cermet coatings are available upon request.
| GRADE |
ISO |
PART MATERIAL |
| *TA |
P10,M10-P15,M15 |
STEEL, ALLOY STEEL, STAINLESS |
| AA |
M10 |
STAINLESS STEEL, ALLOY STEEL |
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