Products

Machine Tool Products -- Locking Devices

Power-Locks are used in fastening the tool changers, turrets, and pulleys for main spindle drive in ATC systems, and to fasten rotors for built-in spindle motors.

AS Series Power-Lock® (Economic, Most popular multipurpose type)  >>>Click for product data

  • A popular standard type that is our simplest to attach and remove.
  • Imperial sizes, electroless nickel plating, and stainless steel types are also available.
  • Perfect for fastening ATC arms and the rotors of built-in spindle motors to main spindles.
  • Uses high strength fastening bolts, and has fewer bolts than competitor products to help you cut down on attachment time.

*This series has no centering functions. A centering guide on the boss (hub) is required.

  • Applicable spindle diameter:
    19 - 300mm
  • Applicable torque range:
    245 - 151000N·m
  • Applicable spindle tolerance:
    h8
  • Applicable hub bore tolerance:
    H8
AS Series picture

KE Series Power-Lock® (economic type for a wide range of spindle tolerances)  >>>Click for product data

  • This easy to use series has centering functions and a small ratio of inner and outer diameters.
  • Has a simple, economical structure with just an inner ring, outer ring, and fastening bolts.
  • Perfect for fastening ATC arms, turrets, and pulleys for spindle motor drives.
  • Electroless nickel plating and stainless steel types also available.

*This series has no centering functions. A centering guide on the boss (hub) is required.

  • Applicable spindle diameter:
    5 - 100mm
  • Applicable torque range:
    7.5 - 9900N·m
  • Applicable spindle tolerance:
    h8
  • Applicable hub bore tolerance:
    H8
KE series picture

EL Series Power-Lock® (element type)  >>>Click for product data

  • This excellent space saving design is lightweight and compact.
  • Users can select the number to be included, the number of fastening bolts, and the size to match their application.
  • Allows for flexible designing.
  • Completely ring shaped for excellent dynamic balance.
  • Perfect for fastening ATC arms, turrets, and pulleys for spindle motor drives.

This series has no centering functions. A centering guide on the boss (hub) is required.

  • Applicable spindle diameter:
    10 - 150mm
  • Applicable torque range:
    6.9 - 10500N·m
  • Applicable spindle tolerance
     φ10 - 38: h6
     φ40 - 150: h8
  • Applicable hub bore tolerance
     φ10 - 38: H7
     φ40 - 150: H8
EL series picture

AD-N Series Power-Lock® (large capacity type) >>>Click for product data

  • Has the same inner diameter as the AS Series with 1.5 - 3 times or more the transmission torque capacity.
  • Has centering functions, so there is no need to machine a troublesome centering guide on the hub bore.
  • Regardless of the application, this series is ideal wherever large transmission torque capacity is needed.
  • Electroless nickel plating and stainless steel types also available.

This power-lock should not be attached and removed more than twice.
(Power-Locks in other series can be attached and removed up to ten times.)

  • Applicable spindle diameter:
    19 - 300mm
  • Applicable torque range:
    382 - 429000N·m
  • Applicable spindle tolerance:
    h8
  • Applicable hub bore tolerance:
    H8
AD-N series picture

SL Series Power-Lock® (outer fastening type)  >>>Click for product data

  • Can be fastened from the outside of the hub, making it ideal for where design limitations force the use of thin-walled hubs or for fastening to hollow spindles.
  • We can provide tap holes for balance adjustments for when fastening the rotors on built-in spindle motors to main spindles that are rotating at high speeds.
  • Ideal for applications where design limitations force the use of thin-walled hubs when fastening to turret spindles or other additional spindles.
  • Applicable spindle diameter:
    24 - 300mm
  • Applicable torque range:
    167 - 290000N·m
  • Applicable hub outer diameter tolerance:
    h7
  • Applicable hub bore tolerance:
    H7
  • Applicable spindle tolerance:
    h6
SL series picture

EF Series Reverse Taper Power-Lock® (made-to-order product)

  • The direction of the taper is opposite that of the standard EF Series, eliminating hub movement during attachment.
  • Ideal for fastening ATC arms and built-in spindle motor rotors to main spindles.
  • We can provide tap holes for balance adjustments for when fastening the rotors on built-in spindle motors to main spindles that are rotating at high speeds.
  • When using an element-type with ATC arms or the like, we can provide designs that eliminate the trouble of manufacturing a pressurizing flange while providing maximum consideration for the mounting dimensions of the current pressurizing flange and element-type.

Contact a Tsubaki representative for more information.

EF series picture