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Article code:
EAN / GTIN:
Manufacturer number:
Cat. No.:
Machine reamer H7, uncoated, Nominal ⌀ DC: 20mm
Article no.: 163000 20
Article code:
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≥ 3.9 mm
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≥ 3,9 mm
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Even number of teeth with irregular spacing − teeth are exactly opposite each other; e. g. teeth 1 and 5.
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Correct undersize for pre-drilled holes can be found in the machining handbook.
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Product details
Technical Data
| Tool material | HSS-E | |
| Coating | uncoated | |
| Colour ring | without | |
| Cutter diameter 1st step min. DC | 20 mm | |
| Overall length L | 195 mm | |
| Usable length L1 | 144 mm | |
| Cutting edge length LC | 60 mm | |
| Gauge length A | 146 mm | |
| Number of teeth | 8 | |
| Shank diameter DS | 16 mm | |
| Helix angle max. | 7 degrees | |
| Type of reaming tool | for through holes | |
| Standard | DIN 212 B | |
| Through-coolant | no | |
| Entry of cooling lubricant | without cooling lubricant entry | |
| Escape of cooling lubricant | without cooling lubricant exit | |
| Cooling lubricant | yes | |
| Wet maximum | suitable | |
| Manufacturer’s designation | Maschinen-Reibahle | |
| Interface position | on the machine | |
| Holder type | plain shank | |
| Interface coding | ZYL01600105 | |
| Holder shape | plain shank | |
| Holder version | metric | |
| Holder size, metric | 16 mm | |
| Type of mounting | spigot | |
| Holder tolerance class | h9 | |
| Length of shank LS | 60 mm | |
| Oil | suitable | |
| Configurable | no | |
| Boring out allowance | 0.2 mm | |
| Hole to be created 1st step, ISO tolerance class | H7 | |
| Tap infeed length | 0.7 mm | |
| Twist direction | left-hand | |
| Graduation | unequal spacing | |
| Adjustment range | setting not possible | |
| Type of drive | machine reamer | |
| Machining group | M (stainless steel); N (non-ferrous metals); P (steel) | |
| Cutting media, manufacturer’s designation | HSS-E | |
| Interface | joint 1 | |
| Upper dimension of nominal diameter | 0.017 mm | |
| Lower dimension of nominal diameter | 0.009 mm | |
| Weight | 289.4 g | |
| Cutting direction | right-hand cutting | |
| Tool version | solid steel | |
| Shape letter standard number | B | |
| Data carriers | without data carrier | |
| Machining method | Reiben (BRE) | |
| Type of product | cylindrical reamer | |
| Content | single part |
Identification & Classification
| Article number | 163000 20 | |
| EAN / GTIN | 4045197253279 | |
| Manufacturer number | 163000 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
N
20
N
20
P
15
P
10
P
7
P
5
P
4
M
5
M
5
S
5
K
5
N
13
Description
Version:
With long flutes and left-hand helix.
From size 1.8 even number of teeth and uneven spacing.
Up to size 3.7 both ends with external centres;
from size 3.9 both ends with internal centres.
Reamers finish ground for fit H7.
From size 1.8 even number of teeth and uneven spacing.
Up to size 3.7 both ends with external centres;
from size 3.9 both ends with internal centres.
Reamers finish ground for fit H7.
Application:
For reaming through holes. Also suitable for blind holes (from 3.9 mm ⌀) due to short chamfer lead.
Note:
- Straight flute machine chucking reamers − available ex-stock.
- For reamers with other diameters and fits see No. 162951.