Headway PWM32

Models in this family

1. 

   PWM32Legacy

   The Headway PWM32 is a spinner spin controller that was later upgraded to the PWM50.

   Cited variants

   Designation	Generation	Vintage	Changes	Source
   PWM32-PS-CB15	—	—	Up to 10,000 rpm; for relatively light loads such as silicon wafers and small photomasks; CB15 bowl with 15-inch I.D. and recommended substrate limits stated in the source.	headwayresearch.com[1]
   PWM32-PS-R790	—	—	Up to 10,000 rpm for relatively light loads such as silicon wafers and small photomasks; substrates up to a 5-inch maximum.	headwayresearch.com[1]
   PWM32-BD-CB15	—	—	Up to 2,500 rpm for heavy loads such as compact disk masters, thick E-beam masks, LCD panels, and substrates requiring high inertia chucks; substrates up to a recommended 12-inch maximum.	headwayresearch.com[1]
   PWM32-BD-LS22	—	—	For substrates larger than 12 inches, or for heavy substrates at higher than 2,500 rpm; LS22 described as the next larger bowl.	headwayresearch.com[1]
   PWM32 Spin Controller	—	—	Described as the model that was upgraded and renamed PWM50.	web.archive.org[2]

Sources