Type 427ELTools - Reamers - Extended Length Coolant Fed Reamers - Extended Length Coolant Fed Reamers with Left Spiral Flutes and Flute Fed Coolant for Through Holes
| Chip Class | Material Machined | Tool Type |
|---|---|---|
| 20 | NON-FERROUS - LONG CHIPS | 427EL |
| 40 | NON-FERROUS - SHORT CHIPS | 427EL / 428EL |
| 60 | CAST IRONS | 428EL |
| 80 | LOW STRENGTH STEELS | 429EL / 428EL |
| 100 | MEDIUM STRENGTH STEELS | 429EL |
| 120 | HIGH STRENGTH STEELS | 429EL |
| 140 | HIGH TEMPERATURE ALLOYS | 429EL |
Description
- Coolant outlets in each flute
- All Extended length reamers provided with controlled shank
- Must specify overall length when ordering (centers supplied only at maximum overall length)
Modifications
- Modified tool diameter - priced below
- Metric tool diameter
- Closer tool diameter tolerance
- Cutting diameter reduced for step or pilot
- End chamfer other than 45º
- End cutting or corner radius
- Increased / decreased circular margin
- Increased / decreased tool diameter back taper
- Shortened shank or reduced shank diameter
- Flat(s) or tang on shank
Coatings available:
- TITANIUM NITRIDE - TiN
- TITANIUM CARBONITRIDE - TiCN
- ZIRCONIUM NITRIDE - ZrN
- AL TITANIUM NITRIDE - AITiN
| Tool Diameter Range | Flute Length | Max Shank Diameter | Number Of Flutes | Overall Length Range | Shank Diameter | EDP | 0.9411 - 0.9720 | 2 5/8 | 8 | 10 1/32 - 18 | 3/4 | 42731EL | 0.9721 - 1.0030 | 2 3/4 | 8 | 10 17/32 - 18 | 7/8 | 42732EL | 0.8471 - 0.8780 | 2 5/8 | 6 | 10 1/32 - 18 | 3/4 | 42728EL | 0.8781 - 0.9090 | 2 5/8 | 6 | 10 1/32 - 18 | 3/4 | 42729EL | 0.9091 - 0.9410 | 2 5/8 | 8 | 10 1/32 - 18 | 3/4 | 42730EL | 0.7841 - 0.8160 | 2 1/2 | 6 | 9 17/32 - 18 | 5/8 | 42726EL | 0.8161 - 0.8470 | 2 1/2 | 6 | 9 17/32 - 18 | 5/8 | 42727EL | 0.7531 - 0.7840 | 2 1/2 | 6 | 9 17/32 - 18 | 5/8 | 42725EL | 0.7221 - 0.7530 | 2 1/2 | 0.6245 | 6 | 9 17/32 - 18 | 42724EL | 0.6591 - 0.6910 | 2 1/4 | 0.5615 | 6 | 9 1/32 - 18 | 42722EL | 0.6911 - 0.7220 | 2 1/4 | 0.5615 | 6 | 9 1/32 - 18 | 42723EL | 0.5971 - 0.6280 | 2 1/4 | 0.5615 | 6 | 9 1/32 - 18 | 42720EL | 0.6281 - 0.6590 | 2 1/4 | 0.5615 | 6 | 9 1/32 - 18 | 42721EL | 0.5661 - 0.5970 | 2 | 0.4355 | 6 | 8 1/32 - 16 | 42719EL | 0.5031 - 0.5340 | 2 | 0.4355 | 6 | 8 1/32 - 16 | 42717EL | 0.5341 - 0.5660 | 2 | 0.4355 | 6 | 8 1/32 - 16 | 42718EL | 0.4721 - 0.5030 | 2 | 0.4355 | 6 | 8 1/32 - 16 | 42716EL | 0.4091 - 0.4410 | 1 3/4 | 0.3730 | 6 | 7 1/32 - 14 | 42714EL | 0.4411 - 0.4720 | 1 3/4 | 0.3730 | 6 | 7 1/32 - 14 | 42715EL | 0.3471 - 0.3780 | 1 3/4 | 0.3105 | 4 | 7 1/32 - 14 | 42712EL | 0.3781 - 0.4090 | 1 3/4 | 0.3105 | 4 | 7 1/32 - 14 | 42713EL | 0.2841 - 0.3150 | 1 1/2 | 0.2792 | 4 | 6 1/32 - 12 | 42710EL | 0.3151 - 0.3470 | 1 1/2 | 0.2792 | 4 | 6 1/32 - 12 | 42711EL | 0.2211 - 0.2530 | 1 1/2 | 0.2193 | 4 | 6 1/32 - 12 | 42708EL | 0.2531 - 0.2840 | 1 1/2 | 0.2505 | 4 | 6 1/32 - 12 | 42709EL |
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