USE OF LONG NOSE COLLETS
Long nose collets are used in the sub spindle for gripping the workpiece. The long nose provides better accessibility to the workpiece. To prevent the long nose collets from breaking during short clamping, they are supplied with a reinforced spring area.
| d | Shaft-Ø |
| A | Head-Ø |
| B | Nose-Ø |
| V | Long nose length |
| E | Total long nose length |
| L | Total length |
| K | Taper angle |
| G | Thread |
| F | Shape |
| Article | Ø d [mm] | Ø A [mm] | Ø B [mm] | V [mm] | E [mm] | L [mm] | K [degree] | G | F min. – max. [mm] |
 | |||||||||
| E116 VBV F13-2014 | 13 | 19 | 13 | 6 | 12 | 70 | 16 | 0,5 – 9,5 | |
| E116 VBV M11x0,75 | 13 | 19 | 13 | 6 | 12 | 70 | 16 | M11x0,75 | 0,5 – 9,5 |
| E120 VBV F15 | 15 | 21 | 15 | 7 9 | 13 15 | 71 73 | 16 | 0,5 – 12,0 | |
| E120 VBV M12x0,75 | 15 | 21 | 15 | 7 9 | 13 15 | 71 73 | 16 | M12x0,75 | 0,5 – 12,0 |
| E1212 VBV F16 | 16 | 21 | 16 | 7 9 | 13 15 | 71 73 | 16 | 0,5 – 12,0 | |
| E1212 VBV F16 M14x0,75 | 16 | 21 | 16 | 7 9 | 12 14 | 70 72 | 16 | M14x0,75 | 0,5 – 12,0 |
| E136 VBV F20 | 20 | 26 | 19 | 8 10 | 13 15 | 62 64 | 15 | 0,5 – 16,0 | |
| E136 VBV M18x1 | 20 | 26 | 19 | 8 10 | 13 15 | 62 64 | 15 | M18x1 | 0,5 – 16,0 |
| E138 VBV F20 | 20 | 28 | 21 | 8 13 | 15 20 | 75 80 | 16 | 0,5 – 16,0 | |
| E138 VBV M17x0,75 | 20 | 28 | 21 | 8 13 | 15 20 | 75 80 | 16 | M17x0,75 | 0,5 – 16,0 |
| E145 VBV F25 | 25 | 35 | 27 | 10 15 | 20 25 | 87 92 | 16 | 0,5 – 20,0 | |
| E145 VBV M22x1 | 25 | 35 | 27 | 10 15 | 20 25 | 87 92 | 16 | M22x1 | 0,5 – 20,0 |
| E1446 VBV EF30-101 | 30 | 38 | 32 | 14 | 20 | 79 | 15 | 1,0 – 26,0 | |
| E161 F32-221 | 32 | 45 | 34 | 15 | 23 | 90 | 15 | 1,0 – 25,0 | |
| E163 VBV F35 | 35 | 48 | 38 | 19 | 27 | 99 | 15 | 1,0 – 30,0 | |
| E1536 VBV F37 | 37 | 47 | 40 | 10 15 | 20 25 | 102 107 | 16 | 1,0 – 32,0 | |
| E164 VBV F38-76-2004 | 38 | 49 | 38 | 15 | 24,5 | 123 | 15 | 1,0 – 32,0 | |
| E173 VBV F48-76-2006 | 48 | 60 | 50 | 19 | 28 | 113 | 15 | 2,0 – 42,0 |
LONG NOSE COLLETS CLAMPING SURFACE DESIGNS
SMOOTH – STANDARD
- Standard long nose collet
- Mainly used on the sub spindle
GROOVED
- Mainly used on the sub spindle
- With additional grooves
CARBIDE COATING
- Carbide coating possible for all shapes
- Higher coefficient of friction than a standard collet
- Higher clamping force
- Repeated / afterward coating possible
EXTENDED CLAMPING LENGTH
- Can be used for long workpieces with multiple grooves
- Higher wrap around at the workpiece perimeter, therefore more force to clamp
- More stable clamping for long workpieces
SHORTENED CLAMPING LENGTH
- Application for workpieces whose geometry behind the clamping diameter shouldn’t be damaged
- Used for short workpieces so the ejector can be lead closer to the clamping diameter
LONG NOSE COLLETS SHAPES
SMALL BORE SIZES
- Produceable from Ø0.2 – 0.99 mm
SQUARE
- Suitable for clamping square material
HEXAGON
- Suitable for clamping hexagon material
SPECIAL PROFILES
- Various profiles can be realized by ram EDM or wire EDM
- Profiles can be adapted individually to the workpiece
SPECIAL CONTOURS
- Complex contours can be realized by hard milling, hard turning and grinding
- Already possible with smallest diameters from 0.2 mm
ECCENTRIC
- Eccentric bore can be eroded individually according to application
- Through hole or offset hole is possible
STEP BORES
- Step bores are suitable for simultaneous clamping of several diameters of a workpiece
- Very high precision as both step bores are ground in one step
INNER CONICAL
- For gripping conical workpieces
- The taper angle of the collet is precisely adapted to the workpiece
LONG NOSE COLLET SLOT DESIGNS
S-SLOT
- High and constant clamping force
- Clamping with virtually no clamping marks
- Alternatively usable for profile material (corner clamping)
- Prevents the entry of machining chips, as the collet closes almost completely
- Easy to clean after use
L-SLOT
- High and constant clamping force
- Clamping with virtually no clamping marks
- Alternatively usable for profile material (corner clamping)
- Prevents the entry of machining chips, as the collet closes almost completely
- Easy to clean after use
- Ideal for clamping short clamping surfaces
W-SLOT
- High and constant clamping force
- Clamping with virtually no clamping marks
- Alternatively usable for profile material (corner clamping)
- Prevents the entry of machining chips, as the collet closes almost completely
- Easy to clean after use
Z-SLOT
- High and constant clamping force
- Clamping with virtually no clamping marks
- Alternatively usable for profile material (corner clamping)
- Prevents the entry of machining chips, as the collet closes almost completely
- Easy to clean after use
THIN SLOTTED
- Clamping with virtually no clamping marks
- Prevents the entry of machining chips, as the collet closes almost completely
- Recommended for small bore sizes
LONG NOSE COLLETS WEAR REDUCTION
CARBIDE INSERT
- High wear resistance
- Prevents pressure marks on the workpiece
- Higher service life
BL COATING
- Smooth surface
- Fewer clamping marks on the material
- Especially suitable for material with poor gliding properties
- Prevents the welding of the material in the collet
PREMIUM BLUE COATING
- Economical alternative to collets with carbide insert
- High wear resistance
- Can also be used for special shapes
- Are completely coated on the functional surfaces like cone and shaft therefore more durable
LONG NOSE COLLETS POSITIONING
SLOT IN CONE
- Slot is placed in the cone of the collet
- Used to position the collet in the machine for special as well as square and hexagon shapes
SLOT IN SHAFT
- Slot is placed in the shaft of the collet
- Used to position the collet in the machine for special as well as square and hexagon shapes
SLOT IN FRONT-SURFACE
- Slot is placed in the front-surface of the collet
- Used to position the collet in the machine for special as well as square and hexagon shapes
ALIGNMENT SURFACE
- The alignment surface on the collet is used to position complex profiles and special contours
- Is only producible in combination with a slot
LONG NOSE COLLETS ADDITIONAL VERSIONS
INTERNAL STOP
- Suitable for manual loading of the machine at a certain length
- Prevents the displacement of the workpiece at high axial forces
- Used to stabilize the workpiece when the clamping length is too short
BUSH
- Is inserted in sub spindle collets
- Is mainly used for medium to large diameters
- Absorbs the vibrations of the bar material, supports it at the back and keeps it axially aligned
SUPPORTING BUSH
- Is inserted in sub spindle collets
- Minimizes vibrations as the bar material is supported along its total length and keeps it axially aligned
- Ejection is made possible in a process-safe way
EJECTOR & INNER COOLING
- Mechanical ejection of the workpieces
- If required internal cooling of components can be integrated
- For flushing the clamping surface
- Simple change of the ejector within one collet type possible
UP VERSION
- High precision
UUP VERSION
- Highest precision
SEALED
- Prevents the entry of machining chips
- The whole slot area can be sealed
- Resealing possible
- Not usable with high pressure flushing in the machine
LONG NOSE COLLETS INSERTS
PEEK / PLASTIC INSERTS
- Prevents pressure marks on the workpiece
- Inserts are replaceable when worn
- Ideal for scratch-sensitive materials, as well as for gentle gripping
ALUMINIUM INSERTS
- Prevents pressure marks on the workpiece
- Inserts are replaceable when worn
- Ideal for scratch-sensitive materials, as well as for gentle gripping
BRASS INSERTS
- Prevents pressure marks on the workpiece
- Inserts are replaceable when worn
- Ideal for scratch-sensitive materials, as well as for gentle gripping
PERMAGLIS INSERTS
- Prevents pressure marks on the workpiece
- Inserts are replaceable when worn
- Ideal for scratch-sensitive materials, as well as for gentle gripping
INSERTS FOR SELF-TURNING
- Clamping diameter can be reworked by the user himself
- Inserts are replaceable when worn
- Ideal for scratch-sensitive materials, as well as for gentle gripping