+ We stock a large inventory of Proportion Air industrial automation systems and parts.
+ We repair, service and calibrate most Proportion Air models of equipment.
+ We ship Proportion Air replacement parts worldwide, with expedited shipping for your urgent Proportion Air requirements


For immediate assistance click here for quick online help
or contact our Automation & Controls team:

Mr. Ryan Fitzgerald
Director, Industrial Automation & Controls Service Team
[email protected]
(212) 772-6992 ext. 704


Our staff at York Scientific is dedicated to help you succeed with all your mission-critical Proportion Air Industrial Automation equipment needs.

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Popular Industrial Automation Products:

Winter 2022 & 2023 Q1 Developments in Industrial Automation - expanded product offering and diagnostic and repair services at York MRO

Winter 2023 Update: Since December 2022 the supply chain strictures have fortunately eased, with less stress on product delivery due dates. Our teams at York MRO have been able to ramp up our service response times with expedited shipment schedules back to normal, providing replacement parts and services following normal response times. Our departments are now working on near-normal production levels and our delivery and service schedules back to regular operation levels. In addition to the Proportion Air SJ0 parts and service support, we have been able to add new lines of product and service:

Expanded Service and Repair Support for New Product Lines: We offer full support for discontinued Psd products, including obsoleted and phased-out Rafi parts and systems, as well as the all-new for 2023 Red-Lion product line-up. Starting Q1 2023 York MRO is pleased to announce additional repair and rebuild services for the automation products made by industrial controls leader Psd such as the O709A spares. Related to this we have added to our service line-up the 540551841005 manufactured by Rafi and we are pleased to be able to service most Rafi systems and parts. Due to increased demand we now feature ZNH1000H by Manufacturer Red-Lion as well.

York Scientific's New & Featured Automation Replacement Parts: Starting early January 2023 York has Reliance Brand 114883 in stock, original and quality replacement parts available for immediate dispatch to meet your requirement for spare replacements. Spare units by Prosoft such as 5105DFCMPDPS equipment made by Prosoft have been added to our featured items. As a tip, you can find the entire Prosoft products line-up in our inventory by simply searching for "Prosoft" in the search box. Additionally we have now also available 5803900S made by Purup-Eskofot as well as the popular REP5M6 original spares produced by Rbc-Bearings

Servo Motors, Spindles, and Electric Motors Rewinding and Rebuilding. We have expanded capacity at our service centers to do complete overhauls of industrial electric motors and spindles. Refurbishment processes are held to stringent QA standards to adhere to or exceed manufacturer's specifications. Overhauls include motor bearing replacement, stator rewinding, and rebalancing. Additional overhaul and rebuilding capabilities of products such as the 14C104 by Reliance and 5105DFCMPDPS spares by Prosoft are also now also our York Scientific's line-up of service offerings. This also includes the original 20D6171 Spares made by industrial controls and automation manufacturer Reliance.