Power Rigid Couplings  (Rigid Couplings )

Product photo
  • Tsubaki's Power Rigid Coupling is a rigid coupling for machine tools. It employs a taper-lock structure to ensure a more reliable connection.
  • The Power Rigid Coupling has no flexible element, so it cannot absorb misalignment. Please use this series for applications where secure centering is available.
  • ・Applicable shaft diameter :Φ16mm~Φ48mm
  • ・Torque range :78~489N・m

Features

  • ・Compatible with straight shafts and taper shaft.

    Compatible with taper shaft servomotors. Apply Φ11 taper shafts and adaptors for Φ16 taper shafts.

  • ・Secure Coupling

    The adoption of the taper lock system allows for larger shaft coupling force.

  • ・High Torsional Stiffness

    Does not have a flexible structure, this type has high rigidity.

  • ・Non-backlash

    There is no backlash due to the friction of the coupling through a taper-lock.

  • ・Compact & Low Moment of Inertia

    The axial length is maximally reduced, allowing for more compact design. Also provides lower moment of inertia through the polygonal outer ring configuration.

Shaft bore diameter combinations

  • ・Straight shaft type

(Units :mm)

Model No. Shaft Bore Diameter D1XD2
EPR50 16X16 16X20 20X20 20X22 - - -
EPR58 20X25 22X25 25X25 - - - -
EPR68 25X30 30X30 25X35 28X35 30X35 32X35 35X35
EPR78 ※Additional machining of plain bore items. Please contact us for turnaround time and machining cost.

  • ・Tapered shaft type

(Units :mm)

Model No. Shaft Bore Diameter D1XD2(Taper Shaft Bore Diameter )
EPR50 16X11T(Φ11Taper ) 20X11T(Φ11Taper ) 22X11T(Φ11Taper )
EPR58 20X16T(Φ16Taper ) 22X16T(Φ16Taper ) 25X16T(Φ16Taper )

Torque range

Model No. Allowable Torque  N・m
EPR50 90~139
EPR58 78~188
EPR68 144~454
EPR78 176~489
  • ※For detailed specifications for each model number, refer to 6 term "List of Model Numbers".

Construction

  • ・Straight shaft type


Straight shaft type
  • ・Tapered shaft type

Tapered shaft type

Catalogs ・Instruction Manuals

Model No. examples

・Straight shaft type
EPR 50 - 16 X 20

Series

Size
((Outer diameter) )

Left Hub Shaft Bore Diameter
mm

Right Hub Shaft Bore Diameter
mm

・Tapered shaft type
EPR 50 - 16 X 11T

Series

Size
((Outer diameter) )

Left Hub Shaft Bore Diameter
mm

Tapered bore diameter
mm

List of Model Numbers

※Click the model No. for detailed information.