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


For immediate assistance be sure to 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 Sierra Instruments Industrial Automation equipment needs.

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Popular Industrial Automation Products:

Winter 2024 & 2025 Q1 Developments in Industrial Automation - expanded product offering and diagnostic and repair services at YorkXPS

Winter 2025 Update: Since December 2023 the supply chain strictures have fortunately eased, with less stress on product delivery due dates. Our teams at YORK XPS 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 Sierra Instruments 640S-NAA-L13-M0-E4(50)-P3-V4-DD-0 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 Siemens products, including obsoleted and phased-out Sixnet parts and systems, as well as the all-new for 2023 Skf product line-up. Starting Q1 2025 YORK is pleased to announce additional repair and rebuild services for the automation products made by industrial controls leader Siemens such as the 6ES54417LA116ES54417LA11 spares. Related to this we have added to our service line-up the 60AD14F7CB367B manufactured by Sixnet and we are pleased to be able to service most Sixnet systems and parts. Due to increased demand we now feature Explorer23044CCC3W33 by Manufacturer Skf as well.

York Scientific's New & Featured Automation Replacement Parts: Starting early January 2025 YORK has Sitron Brand SULGA4TU235002 in stock, original and quality replacement parts available for immediate dispatch to meet your requirement for spare replacements. Spare units by Silicon-Power such as F1890SD1200 equipment made by Silicon-Power have been added to our featured items. As a tip, you can find the entire Silicon-Power products line-up in our inventory by simply searching for "Silicon-Power" in the search box. Additionally we have now also available 203424S72A120 made by Sigma as well as the popular 8550 original spares produced by Signet

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 SMP16SYS516AR15020AA000AA0 by Siemens and F1890SD1200 spares by Silicon-Power are also now also our York Scientific's line-up of service offerings. This also includes the original S20053 Spares made by industrial controls and automation manufacturer Skan-a-matic.