Our online catalog is being updated! Please contact us for current pricing. Precision Open-Axis Rotary Feedthroughs WOA Series Precision Open-Axis Rotary Feedthroughs, WOA Series Description WOA-550/FA/W (shown with optional /FA/W fine adjust worm drive) The WOA rotary feedthrough is an all metal-sealed rotary feedthrough with unique features and exceptional performance. Open Axis The WOA feedthrough has a 3/4" rotary tube with a clear axis diameter of 0.55". The top of the rotary tube has a fixed 1.33" O.D. flange (2.75" O.D. optional). This open axis feature allows a multi-axis feedthrough to be constructed by stacking multiple linear or rotary feedthroughs onto the WOA feedthrough. A variety of coaxial rotary and/or linear drives can be produced. Precision The WOA feedthrough demonstrates unique rotary precision. Tests confirm resolution of better than 0.003° with a backlash of less than 0.005° for positioning (no torque load) applications. Readability Standard scale: 1° graduations /FA with vernier: 1 minute Base Schematics Open Axis Rotary Feedthrough WOA-550 2.75" O.D. mounting flange 1.33" O.D. top flange 3/4" O.D. stainless steel tube 0.55" clear axis up through feedthrough Precision Rotary Feedthrough WOA-550/B 2.75" O.D. flange 3/4" O.D. stainless steel tube Without clear axis WOA-550 and WOA-550/B Ordering Information Open Axis Rotary Feedthroughs Flange O.D. Open Axis Model No. Base Price Motorization Options* /MS/W** /MY/W** 2.75 Yes WOA-550 $3,585 $915 $915 2.75 No WOA-550/B $3,150 $915 $915 *Add motorization option price to base price. **Price does not include controller. Options Option: Top Flange Model Number: /T-275 Price: add $185 2.75" O.D. top flange, replacing the 1.33" O.D. Option: Fine Adjust Model Number: /FA Price: add $1,425 Utilizes a precision Newport stage for rotary actuation Three seconds on Newport stage One minute Vernier reading Option: Custom Length Tube Model Number: /CL Price: add $150 3/4" O.D. stainless steel tube Up to 24", flange face-to-tip Option: Fine Adjust Worm Drive Model Number: /FA/W Price: add $580 Adds a precision worm gear 96:1 (standard); 48:1, 24:1 optional gear ratio Motorization Options /MS/W Stepping or /MY/W Synchronous Motor Drive with High Precision Worm Gear Model Number: /MS/W or /MY/W Price: add $915 Anti-backlash worm drive Self-locking Manual knob Motor controller sold separately SMC Stepping or YMC Synchronous Motor Controllers Click for more information on the SMC Stepping or YMC Synchronous Motor Controllers Option: Shaft Extension Model Number: EXTS-WOA Price: $375 Precision 3/4" O.D. stainless steel tube Split clamp attachment to existing shaft Shaft extension length 3" to 24", as per customer requirements With end guide bearing, as required Simple field installation or removal Mounts to 3/4" O.D. shaft WOA and others