Custom Machine & Tool Co. Inc.

Custom Machine & Tool Co. Inc. - Custom Machine & Tool Co., Inc. manufactures timing pulleys, pulley stock, keyless shaft to hub connection systems and machined components for the motion control and power transmission markets.301 Winter Street
Hanover, MA 02339
Phone: (781) 924-1003
Fax: (781) 924-5154
Contact: Marc Sematones


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Custom Machine & Tool Co., Inc. is a USA manufacturer of precision timing pulleys, drive systems and components for the motion control and power transmission markets since 1964. CMT offers in-stock timing pulleys - the preferred pulley stock manufacturer for OEM’s; 72-hour timing pulley stock; guarantee shipping program; sprockets; custom v-ribbed pulleys; tapered bushings; and idler bearings.

Our product offering contains all types of popular timing pulley tooth designs including:
  • Trapezoidal Profiles: 40 DP (.0816"), MXL (.080"), XL (.200"), L (.375") and H (.500")
  • HTD metric curvilinear profiles: 3MM, 5MM, 8MM, 14MM
  • Gates PowerGrip® GT®2 (PGGT) Profiles: 2MM, 3MM, 5MM, 8MM
  • Goodyear SuperTorquePd®: 3MM, 5MM, 8MM
  • Gates Poly Chain® GT®2 (PGGT): 8MM
  • Metric Profiles: T2.5, T5, T10, T20
  • AT Metric Profiles: AT3, AT5, AT10, AT20
  • Gears up to AGMA Quality 8, 8-64 DP, .5-2 MOD
  • Various Sprockets - #25 to #60 Chain

Custom and industry standard precision timing pulleys, with or without the Concentric Maxi Torque bushing, in all industry standard belt widths. Zero backlash option also available.

Custom Machine and Tool Co., Inc. developed the revolutionary hub-to-shaft connection device, the Concentric Maxi Torque (CMT), which allows for precise component positioning and tight runout control on demanding applications, while at the same time being simple to install and remove without shaft damage. Our keyless hub-to-shaft connection device has superior features and benefits compared to other connection systems such as keyways, pins, set screws, clamp collars, and other tapered shaft locking devices.