Three Knife Trimmers

3-Knife Trimmers from Rosback and Challenge



  • ISP model a stitcherThe CB Model 250 Trimmer is designed for use with other saddle stitchers, flat stitchers, collators, and perfect binding finishing equipment.
  • ISP model a stitcher250 FRC 3-Knife Trimmer - designed for the Rosback 203 Series Saddle Binding System. Equipped with a variable speed inverter drive which helps the automated timing sequence.
  • ISP model a stitcherThe 253 Trimmer also operates independently. This Trimmer has been cropped while maintaining accurate and superior quality trims for the cost-effective manager.
  • ISP model a stitcher318 F Series 3-Knife Trimmers - 318 F, 318 CD and 318 SA. These Trimmers are a deluxe version of the 250 FRC Trimmer and are also equipped with a variable speed inverter drive.


  • challenge 3 knife trimmerCMT 330 Three-Knife Trimmer - Designed for the on-demand printing environment, the CMT-330 features full digital control of the trimming process!