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EAN / GTIN:
Manufacturer number:
Cat. Nr.:
HT chuck, BT 50 short, Clamping range ⌀ D1: 20mm
Article no.: 303469 20
Article code:
- Arbor standard: JIS B6339; JIS B6339
- Shape: ADB
- Balance quality G at rotational speed: G 2.5 at 25,000 rpm
- Concentricity: ≤ 3
- Machining strategy: HSC; HPC
Product details
Technical Data
| Clamping ⌀ D1 | 20 mm | |
| Adapter | BT 50 short | |
| Arbor standard | JIS B6339; JIS B6339 | |
| Shape | ADB | |
| Balance quality G at rotational speed | G 2.5 at 25,000 rpm | |
| Concentricity | ≤ 3 µm | |
| Machining strategy | HSC; HPC | |
| Overhang dimension A | 83.5 mm | |
| External ⌀ D | 49.25 mm | |
| Reach L1 | 45.5 mm | |
| suitable reducing adapter | 302160; 302155; 302150; 302165 | |
| Type of product | Hydraulic clamping chuck |
Identification & Classification
| Article number | 303469 20 | |
| EAN / GTIN | 4062406240059 | |
| Manufacturer number | 303469 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
- Very high overall stiffness due to optimised design.
- Axial length adjustment, adjustment travel 10 mm.
Advantage:
- Maximum transmissible torque 550 Nm, version HT (High Torque), for high process reliability.
- Ideal damping characteristics, resulting in optimum surface finishes, increased tool life and spindle protection.
- Temperature resistance up to 120 °C.
Application:
Especially for heavy-duty milling.
Supplied with:
Hexagon socket drive with T-handle.
Optional extras:
Note:
Caution in the case of extra-long tools and TPC machining.
Warning:
Intended use
Reasonably foreseeable misuse
- HD chuck for clamping rotationally symmetrical tools.
- For work in industrial environments.
- Observe minimum clamping depth.
- If using custom designs, observe the specifications in the applicable drawings.
Reasonably foreseeable misuse
- Do not use in explosion hazard areas.
- Not for use in areas where high concentrations of dust, flammable gases, vapours or solvents are present.
- Do not combine extensions.
- Not to be used for workpiece clamping.
- Do not heat with a shrink-fit unit.