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Tap extension with through-coolant, Type: 3
Article no.: 338435 3
Article code:
Product details
Technical Data
| Through-coolant | yes | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Manufacturer’s designation | Gewindebohrer-Verlängerung mit Innenkühlung Typ 3 | |
| Interface position | on the machine; on the workpiece | |
| Holder type | plain shank; plain shank | |
| Interface coding | ZYL00602105; ZYL00452105 | |
| Holder version | metric with cooling lubricant holes; metric with cooling lubricant holes | |
| Holder size, metric | 6 mm; 4,5 mm | |
| Type of mounting | spigot; hole (internal mounting) | |
| Holder tolerance class | h6 | |
| Shank diameter DS | 6 mm; 4.5 mm | |
| Length of shank LS | 60 mm | |
| Interface on machine side | plain shank | |
| Min. clamping diameter D1 | 4.5 mm | |
| Max. clamping diameter D1 | 4.5 mm | |
| Gauge length A | 70 mm | |
| External diameter, on the tool side D | 8.4 mm | |
| Min. tool clamping length L3 min | 23 mm | |
| Max. tool clamping length L3 | 23 mm | |
| Format | long | |
| suitable for tapping | yes | |
| Size of tap, min. D1 | M4 | |
| Size of tap, max. D1 | M6 | |
| Width across flats SW | 4.9 mm | |
| With cooling channel bore | yes | |
| Interface | joint 1; joint 2 | |
| Type of product | toolholder extension | |
| Overall length L | 130 mm | |
| Overall height H1 | 8.4 mm | |
| Overall width B1 | 8.4 mm | |
| With width across flats | yes | |
| Through-coolant available | yes | |
| Weight | 0.06 kg | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 338435 3 | |
| EAN / GTIN | 4067263110309 | |
| Manufacturer number | 338435 3 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
- Long and extra long version.
- The front end of the extension acts as a collet. The collet is clamped to the tap by hand-tightening the knurled clamping nut.
- The drive torque is provided by the square drive.
- The rear part of the extension is to DIN, so that the extension can be mounted in quick-change tapping collets or ER tapping collets with a square drive.
With internal coolant supply.
Application:
For tapping in confined places, such as recesses, offsets, sharp edges on jigs, extremely deep internal threads, or directly into casting walls.
Note:
Alternative hexagon collet for fixing the tap available on request.