BT30 Collet Chuck Typ ER

Certificate of Quality

  • Chuck body fine balanced U < 1 gmm
  • All functional surfaces fine machined
  • Taper tolerance AT3

Collet Chuck Type ER
JIS B 6339 · BT30

For clamping tools with cylindrical shank in ER collets according to ISO 15488.

JIS B 6339 BT30.

  • Included in delivery: Locknut type HS (fine balanced, with slide coating for higher clamping forces)
  • Enlarging of size L upon request

Technical data subjects to change without prior notice.

Features Collet Chuck Typ ER

The most important features:

  • 1. Fine balanced G2.5 at 25,000 rpm
  • 2. All functional surfaces grinded
  • 3. Fine balanced ER nut
  • 4. High runout accuracy

Technical drawing

BT30 Collet Chuck Typ ER Technical Drawing

Please select your clamping diameter:

Version ER 11
Ø D [mm]19
Clamping range [mm]0,5 - 7,0
L [mm]26,5
Order No. Gage length A in mm    
30.525.11
BT30 Collet Chuck Standard ultra short Pictogram
ultra short, 50.00 mm
DXF
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30.520.11
BT30 Collet Chuck Standard short Pictogram
short, 60.00 mm
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30.521.11
BT30 Collet Chuck Standard long Pictogram
long, 100.00 mm
DXF
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Version ER 16
Ø D [mm]28
Clamping range [mm]0,5 - 10,0
L [mm]32,5
Order No. Gage length A in mm    
30.525.16
BT30 Collet Chuck Standard ultra short Pictogram
ultra short, 50.00 mm
DXF
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30.520.16
BT30 Collet Chuck Standard short Pictogram
short, 60.00 mm
DXF
Step
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30.521.16
BT30 Collet Chuck Standard long Pictogram
long, 100.00 mm
DXF
Step
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Version ER 20
Ø D [mm]34
Clamping range [mm]1,5 - 13,0
L [mm]38,5
Order No. Gage length A in mm    
30.525.20
BT30 Collet Chuck Standard ultra short Pictogram
ultra short, 50.00 mm
DXF
Step
Add item to wishlist Add item to wishlist Item already on wishlist
30.520.20
BT30 Collet Chuck Standard short Pictogram
short, 60.00 mm
DXF
Step
Add item to wishlist Add item to wishlist Item already on wishlist
30.521.20
BT30 Collet Chuck Standard long Pictogram
long, 100.00 mm
DXF
Step
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Version ER 25
Ø D [mm]42
Clamping range [mm]1,0 - 16,0
L [mm]41
Order No. Gage length A in mm    
30.520.25
BT30 Collet Chuck Standard short Pictogram
short, 60.00 mm
DXF
Step
Add item to wishlist Add item to wishlist Item already on wishlist
30.521.25
BT30 Collet Chuck Standard long Pictogram
long, 100.00 mm
DXF
Step
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