DRAW-IN COLLETS

Schlenker draw-in collets are designed and manufactured to offer maximum precision and reliability.
By using them, you improve the processing quality and precision of your machines considerably.

USE
OPTIONS

USE OF DRAW-IN COLLETS

Draw-in collets are used for workpiece clamping as well as in all common grinding machines, dividing heads and manual turning machines.
Clamping is performed by retracting the draw-in collet into the collet sleeve.

d Shaft OD
A Head OD
L Total length
K Taper angle
G Thread
F Shape
Article ø d
[mm]
ø A
[mm]
L
[mm]
K
[degree]
G F
min. – max. [mm]
E324 15 21,5 53 20 M13x1 1,0 – 9,0 2,0 – 6,5 2,0 – 8,0
E3409 20 28 90 8 Tr.20×1,5 2,0 – 14,5 PR PR
E351 20 28 80 20 Tr.20×1,5 1,0 – 15,0 2,0 – 10,5 2,0 – 13,0
E358 23 32 81,5 20 M21x1 1,0 – 16,5 2,0 – 11,0 2,0 – 14,5
E359 23 32 89,5 20 Tr.23×1,5 1,0 – 18,0 2,0 – 12,0 2,0 – 16,0
E363 25 33,5 84 16 M23x1 1,0 – 17,5 2,0 – 12,5 2,0 – 15,5
E366 28 36 100 18 Tr.27×1/20″ 1,0 – 21,0 2,0 – 15,0 2,0 – 18,0
E367 28 38 100 20 Tr.28×1,5 1,0 – 22,0 2,0 – 15,5 2,0 – 19,0
E385 31,75 37,5 83 10 Außen: 31,45×1/20″
Innen: 26,44×1,058
1,0 – 25,0 2,0 – 17,5 2,0 – 21,5
E386 32 45 110 20 Tr.32×1,5 1,0 – 27,0 3,0 – 19,0 3,0 – 23,5
E666 25 35 59,5 20 M25x1 3,0 – 20,0 PR PR
K20 20 28 80 20 Tr.20×1,5 1,0 – 15,0 2,0 – 10,5 2,0 – 13,0
K23 23 32 89,5 20 Tr.23×1,5 1,0 – 18,0 2,0 – 13,0 2,0 – 16,0
K32 32 45 110 20 Tr.32×1,5 1,0 – 27,0 4,0 – 19,0 3,0 – 23,5
K45 45 60 140 20 Tr.45×2 5,0 – 36,5 5,0 – 26,0 5,0 – 32,0
KDT38 58 70,3 99 15 M50x1,5 10,0 – 38,0 8,0 – 26,0 8,0 – 32,0

DRAW-IN COLLETS OPTIONS

We offer a wide range of options for our draw-in collets. Whether you want to simplify your work, improve your production quality or satisfy a customer specific production requirement. Test our draw-in collets now, you will be convinced.

CLAMPING SURFACE DESIGNS
Shapes
Slot designs
Wear reduction
Additional versions
Inserts
Versions

DRAW-IN COLLETS CLAMPING SURFACE DESIGNS

All options

SMOOTH – STANDARD

  • Standard draw-in collet
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GROOVED

  • With additional grooves
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AXIAL & RADIAL GROOVES

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

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

  • Carbide coating possible for all shapes
  • Roughened surface
  • Higher clamping force
  • Repeated / afterward coating possible
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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
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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
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ZUGSPANNZANGEN FORMEN

All options

SQUARE

  • Suitable for clamping square material
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HEXAGON

  • Suitable for clamping hexagon material
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SPECIAL PROFILES

  • Various profiles can be realized by ram EDM or wire EDM
  • Profiles can be adapted individually to the workpiece
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SPECIAL CONTOURS

  • Complex contours can be realized by hard milling, hard turning and grinding
  • Already possible with smallest diameters from 0.2 mm
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ECCENTRIC

  • Eccentric bore can be eroded individually according to application
  • Through hole or offset hole is possible
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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
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INNER CONICAL

  • For gripping conical workpieces
  • The taper angle of the collet is precisely adapted to the workpiece
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DRAW-IN COLLETS SLOT DESIGNS

All options

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
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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
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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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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
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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
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DRAW-IN COLLETS WEAR REDUCTION

All options

CARBIDE INSERT

  • High wear resistance
  • Prevents pressure marks on the workpiece
  • Higher service life
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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
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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
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DRAW-IN COLLETS ADDITIONAL VERSIONS

All options

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
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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
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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
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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
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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
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UP VERSION

  • High precision
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UUP VERSION

  • Highest precision
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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
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