{"id":30202,"date":"2024-06-30T04:39:19","date_gmt":"2024-06-30T04:39:19","guid":{"rendered":"https:\/\/www.santam.safirezaban.ir\/product\/sft-850\/"},"modified":"2026-10-28T12:21:07","modified_gmt":"2026-10-28T12:21:07","slug":"sft-850","status":"publish","type":"product","link":"https:\/\/www.santamco.ir\/en\/product\/sft-850\/","title":{"rendered":"Rotational Fatigue Testing Machine  SFT-850"},"content":{"rendered":"<div dir=\"ltr\">\n<p>The rotating fatigue testing machine SFT-850 is an educational system designed to demonstrate fatigue failure of specimens under fully reversed rotating bending using a four-point loading configuration.<\/p>\n<p>Test results can be presented in the form of stress-cycle (S-N) curves, where the vertical axis represents the applied stress and the horizontal axis represents the number of cycles to failure. These curves indicate the number of cycles a specimen can withstand at a given stress level.<\/p>\n<p>A dead weight loading system applies a bending moment of up to 20 N.m. The specimen is driven by a three-phase AC motor with precise speed control from 0 Hz to 50 Hz, powered from a single-phase 220V input, providing a max. \u00a0rotational speed of approximately 6000 RPM. The system is equipped with cut-off microswitches that automatically stop the machine upon specimen fracture, ensuring safe operation and accurate test termination. A digital LCD counter with resolution of 1 revolution and a capacity of 10,000,000 revolutions displays the number of cycles. Battery-backed memory retains the RPM and cycle count during power interruptions.<\/p>\n<p>High-quality and high-durability ball bearings are used to ensure smooth and stable operation, improving test accuracy and reducing noise. Rigid jaws are designed to securely grip specimens with diameters of 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, and 20 mm; and an adjustable jaw opening range of 60 mm \u00b1 20 mm.<\/p>\n<p>The machine features a suspension (counterbalance) system, and is equipped with accessories and instruments for measuring and compensating the dead weight of the grips and the specimen, ensuring accurate stress application.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div dir=\"ltr\">\n<ul>\n<li>Designed in compliance with ISO 1143, DIN 50113<\/li>\n<li>Dead-weight loading system with max. point load of 400 N<\/li>\n<li>Four-point bending fatigue mechanism for uniform bending moment in the test section (fully educational)<\/li>\n<li>bending moment: 20 N.m<\/li>\n<li>Capable of completing 1,000,000 cycles in less than 3 hours<\/li>\n<li>Equipped with a digital LCD cycle counter with 1 revolution resolution and 10,000,000-cycle capacity (made in Korea)<\/li>\n<li>Battery-backed memory to retain RPM and cycle count during power interruptions<\/li>\n<li>Specimen and grip counterbalance (suspension) system to eliminate dead-weight effects and improve test accuracy<\/li>\n<li>Transparent protective guard for operator safety and test observation<\/li>\n<li>Safe, stable, and easy to operate<\/li>\n<\/ul>\n<\/div>\n","protected":false},"featured_media":41733,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[290],"product_tag":[],"class_list":["post-30202","product","type-product","status-publish","has-post-thumbnail","product_cat----en","first","instock","shipping-taxable","product-type-simple"],"gallery_images":[41737,41734,41740],"_links":{"self":[{"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product\/30202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/comments?post=30202"}],"version-history":[{"count":13,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product\/30202\/revisions"}],"predecessor-version":[{"id":67339,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product\/30202\/revisions\/67339"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/media\/41733"}],"wp:attachment":[{"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/media?parent=30202"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product_cat?post=30202"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.santamco.ir\/en\/wp-json\/wp\/v2\/product_tag?post=30202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}