DEAD LENGTH COLLETS

USE OF DEAD LENGTH COLLETS

Dead length collets are used in the main and sub spindle. The collets can be installed in various types of machines, such as turning machines, sliding headstock automatic lathes, multi-spindle machines, conventional lathes, cam-controlled lathes and in special purpose machine constructions.
The collet is clamped via the pressure sleeve, which presses the collet in axial direction against the union nut.

dShaft-Ø
AHead-Ø
BNose-Ø
lNose length
LTotal length
KTaper angle
FShape
Articleø d
[mm]		ø A
[mm]		ø B
[mm]		I
[mm]		L
[mm]		K
[degree]		F
min. – max. [mm]
       
E101
TF8
F8-577		81284,542160,5 – 5,01,0 – 3,51,0 – 4,5
E109
TF10
F10		1016105,547,5200,5 – 7,01,0 – 5,01,0 – 6,5
E112111912641220,5 – 7,01,0 – 5,01,0 – 6,5
E116
F13		131913664160,5 – 9,52,0 – 7,02,0 – 8,5
E1181419,515646150,5 – 10,02,0 – 7,02,0 – 9,0
E120
TF15
F15		152115664160,5 – 12,02,0 – 8,52,0 – 10,5
E1212
TF16
F16		162116664160,5 – 12,02,0 – 8,52,0 – 10,5
SYF16
M14x0,75		162116866160,5 – 12,02,0 – 8,52,0 – 10,5
E127
TF18		182518667160,5 – 13,02,0 – 9,52,0 – 11,5
E136
F20-201		202619554150,5 – 16,52,0 – 12,02,0 – 14,5
E138
TF20
F20-87		202821767160,5 – 16,02,0 – 11,52,0 – 14,0
E140
TF22
F22		223021655150,5 – 16,52,0 – 12,02,0 – 14,5
TF24242822762150,5 – 18,52,0 – 13,02,0 – 16,0
E144253425665150,5 – 20,02,0 – 14,52,0 – 17,0
E145
TF25
F25		2535271077160,5 – 20,02,0 – 14,52,0 – 17,5
E147
F27-22		273830872,7150,5 – 23,02,0 – 16,02,0 – 20,0
E148
F28		283828770150,5 – 23,02,0 – 16,02,0 – 20,0
BS202835271077160,5 – 23,02,0 – 16,02,0 – 20,0
E157
TF30
F30		3042341080160,5 – 25,02,0 – 18,02,0 – 22,0
EF30
E1446		303832665150,5 – 26,02,0 – 18,52,0 – 22,5
E161
F32		324534875151,0 – 25,52,0 – 18,02,0 – 22,5
0166324034665151,0 – 28,02,0 – 20,02,0 – 24,5
E162354334770151,0 – 29,52,0 – 21,02,0 – 25,5
E163
F35		354838880151,0 – 30,52,0 – 21,52,0 – 25,5
EF37
TF37
E1536		3747401092161,0 – 32,02,0 – 22,52,0 – 27,0
E164
F38		3849389,5108151,0 – 32,02,0 – 22,52,0 – 28,0
EF404047401092161,0 – 36,02,0 – 25,52,0 – 31,5
E171
F42		425542994151,0 – 37,04,0 – 26,54,0 – 32,0
TF434353461092161,0 – 39,04,0 – 27,54,0 – 33,5
TF444452441092161,0 – 38,04,0 – 27,04,0 – 33,0
E173
F48		486050994151,0 – 42,04,0 – 30,04,0 – 36,5
TF48486050994151,0 – 42,04,0 – 30,04,0 – 36,5
BS3848544410100151,0 – 40,04,0 – 28,04,0 – 34,5
E177
F58		587060994153,0 – 52,04,0 – 37,04,0 – 45,0
E185
F66		6684739110153,0 – 60,05,0 – 42,55,0 – 52,0
E185 – Kurz
F66		 85739401561,0 – 65,0  
E190
F88		8810694101151560,0 – 80,020,0 – 56,020,0 – 69,0
E193
F90		901079212,513015a. A.a. A.a. A.

DEAD LENGTH COLLETS CLAMPING SURFACE DESIGNS

SMOOTH

  • Mainly used on the sub spindle
  • Collets up to Ø5.9 mm smooth, collet type E177 and larger
    up to Ø8.9 mm smooth

GROOVED – STANDARD

  • Standard collet
  • Mainly used on the main spindle
  • Collets from Ø6.0 mm grooved, collet type E177 and larger from Ø9.0 mm grooved

AXIAL & RADIAL GROOVES

  • Higher clamping force compared to the grooved standard collet due to the additional axial grooves

SUPERGRIP

  • Highest clamping force at the same clamping pressure of the machine due to very closely spaced axial 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

DEAD LENGTH COLLETS SHAPES

SMALL BORE SIZES

  • Produceable from Ø0.2 – 0.99 mm

SQUARE

  • Square collets are supplied from SW8 with grooves as standard
  • Collet type E177 and larger are available from SW10 with grooves as standard

HEXAGON

  • Hexagon collets are supplied from SW8 with grooves as standard
  • Collet type E177 and larger are available from SW10 with grooves as standard

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

DEAD LENGTH COLLETS 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

 

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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

DEAD LENGTH 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

DEAD LENGTH 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

DEAD LENGTH 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

INSERT AID

  • Is inserted in main spindle collets
  • Is mainly used for small diameters
  • Minimizes vibrations as the bar material is supported along its total length

BUSH

  • Is inserted in main spindle collets
  • An alternative to the insert aid
  • 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

EMERGENCY COLLET SOFT DESIGN

  • Is not hardened
  • Clamping diameter can be turned out by the user himself
  • Used for the production of prototypes, samples and one-off productions

EMERGENCY COLLET WITH TEMPERED HEAD

  • Is hardened, slotted and widened
  • Head is tempered so clamping bore can still be turned out by the user himself
  • Suitable for workpiece clamping in small to medium series production

DEAD LENGTH 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

BRONZE 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