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Narrow-Roll Differential Winding Shaft

Ball Slip Shaft

Ball slip shafts can be configured as center-air, pneumatic side-pressure or mechanical side-pressure structures for flexible narrow-roll winding.

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Ball Slip Shaft shaft view 1
Ball Slip Shaft shaft view 2
Ball Slip Shaft shaft view 3

Ball-Type Winding Structure

Controlled torque for flexible narrow-roll winding.

Suitable for narrow-width slitting from 5 mm and for film, paper and label rewinding applications where roll-specific torque compensation is required.

  • Can be built as center-air-pressure, pneumatic side-pressure or mechanical side-pressure slip shafts.
  • The center-air design has low mechanical torque loss and delivers torque in proportion to air pressure.
  • Supports a broad winding tension range according to shaft structure, ring type and air pressure setting.
  • Suitable for rolls as narrow as 5 mm, with roll width selection based on the actual winding layout.
3-inch Ring75.5 mm OD, 78.2 mm maximum expansion
6-inch Ring151 mm OD, 155.5 mm maximum expansion
Core Sizes76.2 +/- 0.2 mm and 152.4 +/- 0.2 mm
WidthsSingle-ball 10-25 mm; double-ball 15-50 mm
Minimum Slitting WidthFrom 5 mm depending on shaft and ring layout

Slip Ring

Slip ring options and core-contact details

Ball slip rings can be selected according to core size, ring width, ball structure, pressure method and required winding torque.

Ball Slip Shaft slip ring 1
Ball Slip Shaft slip ring 2
Ball Slip Shaft slip ring 3
Ball Slip Shaft slip ring 4
Ball Slip Shaft slip ring 5
Ball Slip Shaft slip ring 6
Ball Slip Shaft slip ring 7
Ball Slip Shaft slip ring 8
Ball Slip Shaft slip ring 9
  • 3-inch ring outside diameter is 75.5 mm and expands to 78.2 mm.
  • Maximum expansion diameter of the steel-ball ring is 78.2 mm.
  • Suitable paper core inner diameter is 76.2 +/- 0.2 mm.
  • Standard 3-inch width is 25 mm; single-ball rings are available in 10, 15, 20 and 25 mm widths.
  • Double-ball rings are available in 15, 20, 25, 30, 35, 40, 45 and 50 mm widths.
  • Standard inner diameter is 60 mm.
  • 6-inch ring outside diameter is 151 mm and expands to 155.5 mm; suitable core is 152.4 +/- 0.2 mm.
  • 6-inch standard widths are 35 and 45 mm, with 30, 40 and 50 mm options.

Selection Notes

Confirm core material, core inner diameter, required width, winding tension range, shaft structure and whether the application needs low starting tension or higher roll-holding force.

Technical Reference Data

Pull force and air pressure reference values for preliminary selection.

Reference values should be confirmed according to the actual shaft structure, ring width, groove material, pressure method and air path before final selection.

Ball Slip Shaft Pull Force, Low Pressure Range

Test condition: 3-inch double-ball slip ring, 25 mm width, 60 mm inner diameter, 20 x 3 groove with wool felt.

Air Pressure (kg/cm2)00.20.40.60.81.01.21.41.61.82.02.22.42.62.83.0
Pull Force (kg)0.170.210.410.520.791.001.121.381.541.771.871.992.082.142.242.46

Ball Slip Shaft Pull Force, High Pressure Range

Continuation of the 3-inch double-ball slip ring test.

Air Pressure (kg/cm2)3.23.43.63.84.04.24.44.64.85.05.25.45.65.86.0
Pull Force (kg)2.622.782.853.123.333.423.613.864.004.264.424.664.925.125.24

Related Slip Shaft Types

Air Slip Shaft

Air slip shafts combine pneumatic core locking with controlled differential slip for accurate torque and stable multi-roll winding.

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Low Tension Slip Shaft

Low tension slip shafts are designed for sensitive materials that require stable winding at low air pressure and low torque.

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DS Slip Shaft

DS slip shafts provide pneumatic core locking and controlled slip for medium-tension film slitting and rewinding applications.

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Double Ball and Roller Slip Shaft

Double ball and roller slip shafts use extended expansion contact points to support stable core holding and winding torque.

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Key Slip Shaft

Key slip shafts use rectangular metal or rubber keys to expand and contact the core for controlled differential winding.

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