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STEADYLINE® BORING BARS RANGE EXTENSION: HSK-T/A AND SECO-CAPTO™ C8
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Copyright © Seco Tools AB
Range extension
Extension of the range of Steadyline turning/boring bars (GL32/GL40/GL50),
with HSK-T/A and Seco-Capto C8 machine
side connection
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GL32
C4
C5
C6
HSK-T/A63
HSK-T/A100 D32
DA20 (1.25’’)
C5
C6
HSK-T/A63
HSK-T/A100 D40
DA24 (1.5’’)
C5
C6
C8
HSK-T/A100 D40
DA24 (1.5’’)
GL40
C6
C8
HSK-T/A63
HSK-T/A100 D50
DA32 (2’’)
C6
C8
HSK-T/A63
HSK-T/A100 D50
DA32 (2’’)
C6
C8
HSK-T/A100 D50
DA32 (2’’)
GL50
10xD
8xD
6xD
C4
C5
C6
C8
HSK-T/A100 D32
DA20 (1.25’’)
C5
C6
C8
HSK-T/A63
HSK-T/A100 D40
DA24 (1.5’’)
C4
C5
C6
C8
HSK-T/A63
HSK-T/A100 D32
DA20 (1.25’’)
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Copyright © Seco Tools AB
HSK-T vs. HSK-A toolholders
Steadyline bars with HSK-T/A machine side connection are fully compatible with:
• HSK-T spindles on lathes, for static turning
operations
• HSK-A spindles on machining centers, for
rotating boring operations
HSK-T machine side connection features one driving slot slightly narrower and with tighter
tolerances than HSK-A.
Tighter tolerances also on the machine spindle driving key.
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HSK-A HSK-T
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Copyright © Seco Tools AB
HSK-T and HSK-A: tolerances and gaps
between spindle and holder
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Spindle drive key
Holder key way
HSK-A spindle, HSK-A holder
A
A
Min gap
Max gap
Spindle drive key
Holder key way
HSK-T spindle, HSK-T holder
T
T
Min gap
Max gap
Spindle drive key
Holder key way
HSK-A spindle compatible with HSK-T holder
A
Max gap
T
Min gap
A
Min gap
Spindle drive key
Holder key way
HSK-T spindle compatible with HSK-A holder
T
Max gap
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Copyright © Seco Tools AB
Toolholder and spindle angular
clearance
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Copyright © Seco Tools AB
Steadyline HSK-T/A toolholders
Steadyline bars feature “HSK-T/A” tapers: a combination of both norms
Behind the gage line: according to the HSK-T norm
• Tightest tolerances on driving slot,
required in turning operations
In front of the gage line: according to the HSK-A norm
• Pre-balancing (for rotating operations)
• Slot for Balluff chips
• Front diameter according to HSK-A
norm, compatible with «HSK-A» and
«HSK-T» tool changers
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HSK-T HSK-A
Gage line
Safe zone Safe zone
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Copyright © Seco Tools AB
HSK-T and HSK-A: tolerances and gaps
between spindle and holder
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Spindle drive key
Holder key way
HSK-A spindle, HSK-A holder
A
A
Min gap
Max gap
Spindle drive key
Holder key way
HSK-T spindle, HSK-T holder
T
T
Min gap
Max gap
HSK-T spindles and toolholders
used on lathes to guarantee an
accurate positioning of the
cutting tool during turning
operations
HSK-A toolholders are
prebalanced for rotating
operations (boring) on machining
centres
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Copyright © Seco Tools AB
Steadyline HSK-T/A toolholders
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Steadyline HSK-T/A
Suitable both for
TURNING and
BORING operations
Boring heads with GL
machine side connection
Turning heads with GL
machine side connection
HSK-T spindles and toolholders
used on lathes to guarantee an
accurate positioning of the
cutting tool during turning
operations
HSK-A toolholders are
prebalanced for rotating
operations (boring) on machining
centres
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Copyright © Seco Tools AB
Review – Boring heads for Steadyline Rough boring heads dia. 36-69 mm
Simplicity
• 2 radial Push/Pull screws
• Clamping of insert carriers through 4 bolts
• No need for extra training
Compact design, strong insert carrier design • Robust
• Reduced weight
• 90°, meaning less radial forces, for CC09/CC12 ISO inserts
Body in stainless steel, sand-blasted • Resistant to corrosion
• Long service life
Symmetrical or staggered boring (thru shim) • Adapted to all kinds of applications
• Efficient
GL Connection • Flexible, rigid, accurate
Through coolant
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Copyright © Seco Tools AB
Review – Boring heads for Steadyline Rough boring heads dia. 34-69 mm
Simple to use – same principle as A780 fine boring heads
Compact and short design, lightweight and near the mass for best damping performance
Same insert carriers as for A780 series • Bears against head body for stable cutting
• Less inventory
Fine pitch micro spindle screw • Setting at 2.5µm
• Easy access to Vernier, ergonomic
Body in stainless steel, hardened • Resistant to corrosion
• Long service life (can be repaired)
GL Connection • Flexible, rigid, repeatable accuracy
Through coolant • Improved cutting conditions
• Longer insert life
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Copyright © Seco Tools AB
Review – Mounting Steadyline
turning/boring bars on machining centres Seco-Capto spindles:
• use Seco-Capto turning/boring bars
HSK-A or HSK-T spindles: • use HSK-T/A boring bars
SA spindles (DIN, BT, CAT): • use the shortest Seco-Capto basic arbor (A length ≤
40 mm) to adapt a Seco-Capto bar on an SA spindle
• If using a Seco-Capto basic arbor with A-length > 40
mm, tuning of the whole assembly is necessary to
guarantee relevant operational outputs of the
Steadyline bar. Please inquire through ZYN.
Always respect the maximum cutting speeds indicated in the user instruction.
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Copyright © Seco Tools AB
Summary
Extension of the range of Steadyline turning/boring bars (GL32/GL40/GL50),
with HSK-T/A and Seco-Capto C8 machine
side connection
HSK-T/A machine side connection suitable both for turning operations on lathes and
boring operations on machining centres
See Steadyline sales guide for further details on the Steadyline vibration damping
technology or contact
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GL32
C4
C5
C6
HSK-T/A63
HSK-T/A100 D32
DA20 (1.25’’)
C5
C6
HSK-T/A63
HSK-T/A100 D40
DA24 (1.5’’)
C5
C6
C8
HSK-T/A100 D40
DA24 (1.5’’)
GL40
C6
C8
HSK-T/A63
HSK-T/A100 D50
DA32 (2’’)
C6
C8
HSK-T/A63
HSK-T/A100 D50
DA32 (2’’)
C6
C8
HSK-T/A100 D50
DA32 (2’’)
GL50
10xD
8xD
6xD
C4
C5
C6
C8
HSK-T/A100 D32
DA20 (1.25’’)
C5
C6
C8
HSK-T/A63
HSK-T/A100 D40
DA24 (1.5’’)
C4
C5
C6
C8
HSK-T/A63
HSK-T/A100 D32
DA20 (1.25’’)
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Steadyline® Boring Bars�Range Extension: HSK-T/A And seco-Capto™ C8Range extensionHSK-T vs. HSK-A toolholdersHSK-T and HSK-A: tolerances and gaps between spindle and holderToolholder and spindle angular �clearanceSteadyline HSK-T/A toolholdersHSK-T and HSK-A: tolerances and gaps between spindle and holderSteadyline HSK-T/A toolholdersReview – Boring heads for Steadyline�Rough boring heads dia. 36-69 mm�Review – Boring heads for Steadyline�Rough boring heads dia. 34-69 mm�Review – Mounting Steadyline turning/boring bars on machining centresSummaryFoliennummer 13