Caliper Disc Brake CDB1621A

Technical Specs

Maximum Torque - Series Wound 1/2 h 1,000 lb-ft
Maximum Torque - Series Wound 1h 600 lb-ft
Maximum Torque - Shunt Wound 1/2 h 1,000 lb-ft
Maximum Torque - Shunt Wound 1h 750 lb-ft
Drum Brake Replaced 16 in
Disc Diameter 21 in
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Features of the CDB1621A

Caliper Disc Brake

PT Tech's new CDB1621A replaces 16" drum brakes and conforms to the new AIST brake standard.

If the installation conforms to AIST's dimensional standard for DC mill motors, then when ordering all that is required is the DC mill motor number and existing electrical coil specifications. In all other installations, please provide a drawing of the existing brake drum. 21" inch disc replaces an 16" drum.

The CDB1621A caliper disc brake provides higher performance and easier maintenance than the drum brakes it replaces. Upgrading your crane with PT Tech's CDB1317A will result in the following advantages:

  • Wear adjustment is far easier.
  • Less frequent need for wear adjustments.
  • Improved wear life.
  • Replacing friction pucks is substantially quicker.
  • A set of friction pucks weighs only 4½ pounds.
  • Eliminates drag and slip problems due to drum thermal expansion.
  • Significantly better resistance to heat checking
  • Spring applied
  • Electrically released
  • Operates in series with DC motors
  • Installation requires no modification

PT Tech supports its commitment to excellent field service with a large inventory of parts and a 24-hour emergency service. When Converting The CDBA directly replaces an 16" drum brake. It has the same mounting footprint and torque capacity as an 16" drum brake. When converting, it is critical that the disc's centerline is in the same position as the drum's centerline. Single-acting caliper disc brakes impose a bending moment. Shafting should be reviewed prior to installation. Consult PT Tech. In most cases, PT Tech can suggest mounting adaptations for non-standard drum brakes.