{"id":4798,"date":"2025-09-29T11:51:07","date_gmt":"2025-09-29T03:51:07","guid":{"rendered":"http:\/\/www.camcjsw-testmachines.com\/?p=4798"},"modified":"2025-09-29T11:59:23","modified_gmt":"2025-09-29T03:59:23","slug":"sinotest-spherical-plain-bearing-performance-testing-principle","status":"publish","type":"post","link":"http:\/\/www.camcjsw-testmachines.com\/ru\/sinotest-spherical-plain-bearing-performance-testing-principle\/","title":{"rendered":"SINOTEST\u00a0Spherical Plain Bearing Performance Testing Principle"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4798\" class=\"elementor elementor-4798\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4721959 e-flex e-con-boxed e-con e-parent\" data-id=\"4721959\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75b067e elementor-widget elementor-widget-text-editor\" data-id=\"75b067e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><strong><b>Introduction<\/b><\/strong><\/p><p>Bearings, serving as the &#8220;joints&#8221; of the equipment manufacturing industry, are core foundational components for strategic and emerging industries such as aerospace, high-speed rail, and new energy vehicles. As the demand for domestic bearings in related industries shifts from &#8220;quantity&#8221; to &#8220;quality,&#8221; China&#8217;s bearing industry is imposing higher requirements for the performance testing of high-end bearings.<\/p><p>Our previous article shared a series of spherical plain bearing testing machines developed by SINOTEST\u00a0Equipment Co., Ltd. to meet bearing performance testing needs (SINOTEST&#8217;s High-End Bearing Testing Machine Series Products Help the Bearing Industry Leap from &#8216;Quantity&#8217; to &#8216;Quality&#8217;). This article continues by sharing the performance testing principles of this product series.<\/p><ol><li><strong><b> Factors Affecting Spherical Plain Bearing Performance and Lifespan<\/b><\/strong><\/li><\/ol><p>To accurately measure the performance of spherical plain bearings, it is essential to understand the\u00a0loading conditions and oscillation modes\u00a0they endure under actual operating conditions. Based on lubrication methods, spherical plain bearings can be divided into self-lubricating and non-self-lubricating types. Among them, self-lubricating spherical plain bearings are widely used in aerospace, military equipment, and other fields due to their high load density and simple maintenance.<\/p><p>This article will analyze the structure and loading methods using\u00a0&#8220;self-lubricating&#8221; spherical plain bearings\u00a0as an example. A self-lubricating radial spherical plain bearing consists of four parts:\u00a0\u2460 Outer Ring, \u2461 Seal, \u2462 Self-lubricating Liner, and \u2463 Inner Ring. Typically, the liner is bonded to the inner spherical surface of the outer ring. Its basic structure is shown in Figure 1.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc50a15 e-flex e-con-boxed e-con e-parent\" data-id=\"bc50a15\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7b61b41 elementor-widget elementor-widget-image\" data-id=\"7b61b41\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"420\" height=\"293\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3f6d8714-eec9-4e2f-a264-bdc0591fdbb6.webp\" class=\"attachment-large size-large wp-image-4804\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3f6d8714-eec9-4e2f-a264-bdc0591fdbb6.webp 420w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3f6d8714-eec9-4e2f-a264-bdc0591fdbb6-300x209.webp 300w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3f6d8714-eec9-4e2f-a264-bdc0591fdbb6-18x12.webp 18w\" sizes=\"(max-width: 420px) 100vw, 420px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc2ccb2 e-flex e-con-boxed e-con e-parent\" data-id=\"bc2ccb2\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8998dc3 elementor-widget elementor-widget-text-editor\" data-id=\"8998dc3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><b>Figure 1: Physical Diagram of Self-lubricating Spherical Plain Bearing<\/b><\/strong><\/p><p><strong><b>(I) Oscillation Conditions<\/b><\/strong><\/p><p>Factors affecting the wear life of spherical plain bearings also include the oscillation mode, oscillation frequency, and oscillation amplitude. The main oscillation modes of spherical plain bearings during operation include rotational oscillation, tilting oscillation, and compound oscillation combining both.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cef2304 e-flex e-con-boxed e-con e-parent\" data-id=\"cef2304\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e597d41 elementor-widget elementor-widget-image\" data-id=\"e597d41\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"176\" height=\"203\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/dfe6c23c-df3a-4dd9-ae78-e83677281bb8.webp\" class=\"attachment-large size-large wp-image-4807\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/dfe6c23c-df3a-4dd9-ae78-e83677281bb8.webp 176w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/dfe6c23c-df3a-4dd9-ae78-e83677281bb8-10x12.webp 10w\" sizes=\"(max-width: 176px) 100vw, 176px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b463603 elementor-widget elementor-widget-image\" data-id=\"b463603\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"274\" height=\"202\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d2eca1b-cbc0-4d7d-b2ca-16698b5d4525.webp\" class=\"attachment-large size-large wp-image-4802\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d2eca1b-cbc0-4d7d-b2ca-16698b5d4525.webp 274w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d2eca1b-cbc0-4d7d-b2ca-16698b5d4525-16x12.webp 16w\" sizes=\"(max-width: 274px) 100vw, 274px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db24ecf e-flex e-con-boxed e-con e-parent\" data-id=\"db24ecf\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-def70ec elementor-widget elementor-widget-text-editor\" data-id=\"def70ec\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><b>Figure 2: Spherical Plain Bearing Oscillation Modes<\/b><\/strong><\/p><p>In actual operating conditions, the influence of the oscillation mode and the characteristics and magnitude of the applied load on the working performance of spherical plain bearings is as follows:<\/p><p>\u2460 Tilting and compound oscillation of the bearing can easily cause liner detachment;<\/p><p>\u2461 High pv values generated by high frequency and heavy loads can cause an increase in the friction temperature of the spherical plain bearing;<\/p><p>\u2462 Heavy loads can also cause excessive deformation and failure of the bearing&#8217;s rigid materials.<\/p><p><strong><b>(II) Loading Conditions<\/b><\/strong><\/p><p>This type of bearing has closely fitted inner and outer rings (conforming contact) and primarily withstands\u00a0radial and axial loads\u00a0under oscillating motion.<\/p><p>The self-lubricating liner is generally made of non-metallic materials. In practical working environments, it is prone to different forms of damage and deformation under various loading methods such as alternating loads and impact loads. Therefore, the load-bearing capacity and service life of self-lubricating spherical plain bearings under alternating loads and impact loads are important indicators for evaluating their performance.<\/p><ol><li><strong><b> Force Analysis of Spherical Plain Bearings in Actual Working Conditions<\/b><\/strong><\/li><\/ol><p>After understanding the oscillation modes and loading conditions of spherical plain bearings, we can establish a coordinate system O-XYZ based on the spherical centers of the inner and outer rings of the self-lubricating bearing to analyze the forces acting on the bearing under actual working conditions.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cabd0c0 e-flex e-con-boxed e-con e-parent\" data-id=\"cabd0c0\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4148775 elementor-widget elementor-widget-image\" data-id=\"4148775\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"391\" height=\"278\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d27ef8a-1ef3-441e-86d7-7621e691fa84.webp\" class=\"attachment-large size-large wp-image-4803\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d27ef8a-1ef3-441e-86d7-7621e691fa84.webp 391w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d27ef8a-1ef3-441e-86d7-7621e691fa84-300x213.webp 300w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3d27ef8a-1ef3-441e-86d7-7621e691fa84-18x12.webp 18w\" sizes=\"(max-width: 391px) 100vw, 391px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bfe9960 e-flex e-con-boxed e-con e-parent\" data-id=\"bfe9960\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce3d2be elementor-widget elementor-widget-text-editor\" data-id=\"ce3d2be\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><b>Figure 3: Schematic Diagram of Motion Modes and Load Application Directions<\/b><\/strong><\/p><p>Using the fixed bearing outer ring (or inner ring) as the reference, the inner and outer rings can relatively reciprocate around the three coordinate axes: X, Y, and Z. During the actual operation of a self-lubricating spherical plain bearing, its actual motion state can be composed of the combination of rotations in these three directions. As shown in Figure 3, with the bearing inner ring fixed, the outer ring can relatively have forces FX, FY, FZ applied along the X, Y, and Z axes. In actual operation,\u00a0the load applied to the self-lubricating spherical plain bearing can be derived from the combination of the loads in these three directions.<\/p><p><strong><b>III. Load Application Methods for Spherical Plain Bearing Testing<\/b><\/strong><\/p><p>From the above analysis of the motion forms and load directions of self-lubricating spherical plain bearings, it can be seen that the inner and outer rings of self-lubricating spherical plain bearings can relatively reciprocate around the three rotation axes X, Y, Z, and loads can be applied along the X, Y, Z directions. Therefore, the loading methods can be divided into unidirectional loading, bidirectional loading, and multi-directional loading.<\/p><p>SINOTEST\u00a0considers\u00a0the load state of self-lubricating spherical plain bearings under actual working conditions, dividing\u00a0the loads borne during performance testing into several modules: the\u00a0Radial Loading Module, Axial Loading Module, Tilting Oscillation Module, and Rotational Oscillation Module.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d4fe00 e-flex e-con-boxed e-con e-parent\" data-id=\"6d4fe00\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4a1c5f7 elementor-widget elementor-widget-image\" data-id=\"4a1c5f7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"414\" height=\"293\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/77b81ba2-ce22-4b9d-94eb-af7d4e5c9755.webp\" class=\"attachment-large size-large wp-image-4805\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/77b81ba2-ce22-4b9d-94eb-af7d4e5c9755.webp 414w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/77b81ba2-ce22-4b9d-94eb-af7d4e5c9755-300x212.webp 300w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/77b81ba2-ce22-4b9d-94eb-af7d4e5c9755-18x12.webp 18w\" sizes=\"(max-width: 414px) 100vw, 414px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4fdff96 e-flex e-con-boxed e-con e-parent\" data-id=\"4fdff96\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ae75675 elementor-widget elementor-widget-text-editor\" data-id=\"ae75675\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><b>Figure 4: Schematic Diagram of Each Loading Module<\/b><\/strong><\/p><p>Among them, the radial and axial loading modules simulate the loads experienced by the self-lubricating spherical plain bearing under actual working conditions, while the tilting and rotational oscillation modules simulate the motion modes of the self-lubricating spherical plain bearing under actual working conditions, fully restoring the force application method on the self-lubricating spherical plain bearing, thereby enabling comprehensive and accurate performance testing.<\/p><p>In actual test cases, a compound oscillation spherical plain bearing life testing machine developed using the above method was used to repeatedly test the tribological performance of self-lubricating radial spherical plain bearings under different oscillation modes. The test conditions were: room temperature; test duration approximately 18 hours (approximately 130,000 oscillations); radial load 10 kN; oscillation angle \u00b15\u00b0; oscillation frequency 2 Hz. Figure 5 shows the relationship curve between the number of oscillations and the wear amount of the spherical plain bearing during the test.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8bbd280 e-flex e-con-boxed e-con e-parent\" data-id=\"8bbd280\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba3a609 elementor-widget elementor-widget-image\" data-id=\"ba3a609\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"553\" height=\"306\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/d584a5d8-9b15-44c3-b277-8bf3dc1dca29.webp\" class=\"attachment-large size-large wp-image-4806\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/d584a5d8-9b15-44c3-b277-8bf3dc1dca29.webp 553w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/d584a5d8-9b15-44c3-b277-8bf3dc1dca29-300x166.webp 300w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/d584a5d8-9b15-44c3-b277-8bf3dc1dca29-18x10.webp 18w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7ae1683 e-flex e-con-boxed e-con e-parent\" data-id=\"7ae1683\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1cbc3e8 elementor-widget elementor-widget-text-editor\" data-id=\"1cbc3e8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><b>Figure 5: Relationship Curve Between Number of Oscillations and Wear Amount<\/b><\/strong><\/p><p>From Figure 5, it can be seen that the wear amount of the spherical plain bearing with increasing continuous rotational oscillations can be roughly divided into\u00a0three stages:\u00a0In the initial stage, the self-lubricating bearing is in the running-in process, and the wear amount increases rapidly; in the stable stage, the wear of the bearing friction pair surface is mainly dominated by the wear of the transfer film, and the wear amount increases steadily; in the rapid wear stage, the liner is worn through, and the wear amount increases sharply,\u00a0which is basically consistent with the wear situation of self-lubricating spherical plain bearings under actual working conditions.<\/p><ol><li><strong><b> Related Products<\/b><\/strong><\/li><\/ol><p>The series of spherical plain bearing testing machines developed based on the principles described in this article, while highly restoring the actual working conditions of the samples, adopt dedicated acquisition control systems and integrated loading systems specifically for spherical plain bearing testing, significantly shortening the load chain, and featuring characteristics such as\u00a0high stiffness and high frequency response.<\/p><p>This series of testing machines can be loaded according to standard waveforms or according to a certain wave spectrum. They can perform both alternating load tests and fatigue tests.\u00a0The testing conditions can basically cover all current spherical plain bearing products on the market.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1268bea e-flex e-con-boxed e-con e-parent\" data-id=\"1268bea\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-747ce65 elementor-widget elementor-widget-image\" data-id=\"747ce65\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"536\" height=\"393\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3cc329ff-e0c4-4ad3-a1b1-99223f8be5ff.webp\" class=\"attachment-large size-large wp-image-4808\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3cc329ff-e0c4-4ad3-a1b1-99223f8be5ff.webp 536w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3cc329ff-e0c4-4ad3-a1b1-99223f8be5ff-300x220.webp 300w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2025\/09\/3cc329ff-e0c4-4ad3-a1b1-99223f8be5ff-16x12.webp 16w\" sizes=\"(max-width: 536px) 100vw, 536px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 6: 3D Model of the Testing Machine<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1be0184 e-flex e-con-boxed e-con e-parent\" data-id=\"1be0184\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de16bc0 elementor-widget elementor-widget-text-editor\" data-id=\"de16bc0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div>\n \t<strong><b> V. Conclusion<\/b><\/strong><\/li>\n<\/ol>\nStanding at the forefront of new quality productive forces, China&#8217;s high-end bearing industry is using independent innovation as its engine to drive towards a higher position in the global value chain. As materials science, intelligent manufacturing, and the industrial internet deeply integrate, a trillion-yuan market blue ocean is opening up. When the precision and reliability of &#8220;China Bearings&#8221; gain international recognition, the &#8220;joints&#8221; of Chinese manufacturing will become more flexible and powerful, supporting every precise operation from major national projects to emerging technologies.\n\n<strong><b>END<\/b><\/strong>\n\n&nbsp;<\/div>\n \t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction Bearings, serving as the &#8220;joints&#8221; of the equipment manufacturing industry, are core foundational components for strategic and emerging industries such as aerospace, high-speed rail, and new energy vehicles. As the demand for domestic bearings in related industries shifts from &#8220;quantity&#8221; to &#8220;quality,&#8221; China&#8217;s bearing industry is imposing higher requirements for the performance testing of [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-4798","post","type-post","status-publish","format-standard","hentry","category-blogs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v22.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>SINOTEST\u00a0Spherical Plain Bearing Performance Testing Principle - SINOTEST, a brand of JIANGSU WALLONG-HSIN MACHINERY ENGINEERING CORPORATION LTD<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.camcjsw-testmachines.com\/ru\/sinotest-spherical-plain-bearing-performance-testing-principle\/\" \/>\r\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"SINOTEST\u00a0Spherical Plain Bearing Performance Testing Principle\" \/>\r\n<meta property=\"og:description\" content=\"Introduction Bearings, serving as the &#8220;joints&#8221; of the equipment manufacturing industry, are core foundational components for strategic and emerging industries such as aerospace, high-speed rail, and new energy vehicles. 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