+ 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 Skf products, including obsoleted and phased-out Sixnet parts and systems, as well as the all-new for 2023 Sinclair 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 Skf such as the 31452700 spares. Related to this we have added to our service line-up the STIPM1350 manufactured by Sixnet and we are pleased to be able to service most Sixnet systems and parts. Due to increased demand we now feature P4440E1 by Manufacturer Sinclair as well.

York Scientific's New & Featured Automation Replacement Parts: Starting early January 2025 YORK has Sigma Brand SGSP60YAWOB in stock, original and quality replacement parts available for immediate dispatch to meet your requirement for spare replacements. Spare units by Parker such as STMD1212P10M equipment made by Parker have been added to our featured items. As a tip, you can find the entire Parker products line-up in our inventory by simply searching for "Parker" in the search box. Additionally we have now also available 80072E made by Silicon-Valley-Group as well as the popular R8200P1SI105 original spares produced by Single-Temperiertechnik

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 729124 by Skf and STMD1212P10M spares by Parker are also now also our York Scientific's line-up of service offerings. This also includes the original 12051161 Spares made by industrial controls and automation manufacturer Sigmatek.