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Heavy-duty chuck, BT 40, ⌀ D1: 20mm
Article no.: 302865 20
Article code:
Product details
Technical Data
| Entry of cooling lubricant | without cooling lubricant entry | |
| Escape of cooling lubricant | without cooling lubricant exit | |
| Cooling lubricant | no | |
| Holder type | ISO taper | |
| Interface coding | SKG04005085 | |
| Holder shape | MAS BT | |
| Holder version | dimensionless nominal size without cooling | |
| Holder size, no dimensions | 40 | |
| Type of mounting | spigot | |
| Shank length LS | 85 mm | |
| Interface on machine side | BT 40 | |
| With flat surface contact | yes | |
| Max. clamping diameter D1 | 20 mm | |
| Gauge length A | 90 mm | |
| External diameter, tool-end D | 52 mm | |
| External diameter of clamping nut D | 63 mm | |
| Height of clamping nut | 39 mm | |
| Concentricity | 5 µm | |
| Balance quality G at rotational speed | g 6.3 at 20,000 rpm | |
| Machining strategy | HPC | |
| Vibration damping | no | |
| Tool pull-out protection | yes | |
| Maximum clamping force | 1,000 Nm | |
| Interface | joint 1; joint 2 | |
| Type of product | heavy-duty chucks | |
| Overall length L | 155.4 mm | |
| Overall height H1 | 52 mm | |
| Overall width B1 | 52 mm | |
| Standard | ISO 7388-2; JIS B6339 | |
| Shape | AD | |
| Through-coolant available | no | |
| Material | heat-treatable steel | |
| Surface treatment | burnished | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 302865 20 | |
| EAN / GTIN | 4045197549075 | |
| Manufacturer number | 302865 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
- Low friction due to needle bearings.
- Protected with anti-corrosion coating.
- Dust-tight and watertight.
- Very high clamping force prolongs tool life and improves surface quality.
- Flexible clamping range by means of collets.
- Clamping force up to 1000 Nm.
Version - image:
Internal axial recesses effectively prevent the tool slipping.
High radial stiffness due to repeatable clamping accuracy against a flat face, which prevents misalignment and ensures a high accuracy of machining, coupled with long tool life.
T-slots take up the oil and grease, so that reliable torque transmission is achieved.
Absolutely smooth running of the clamping nut.
High radial stiffness due to repeatable clamping accuracy against a flat face, which prevents misalignment and ensures a high accuracy of machining, coupled with long tool life.
T-slots take up the oil and grease, so that reliable torque transmission is achieved.
Absolutely smooth running of the clamping nut.
Application:
For clamping tools with plain shanks.
Supplied with:
Clamping nut