<?xml version="1.0" encoding="UTF-8" ?>
<feed xmlns="http://www.w3.org/2005/Atom">
    <link href="https://www.sankyo-oilless.de/com/news/?sAtom=1" rel="self" type="application/atom+xml" />
    <author>
        <name>Sankyo Oilless</name>
    </author>
    <title>Blog/Atom feed</title>
    <id>https://www.sankyo-oilless.de/com/news/?sRss=1</id>
    <updated>2026-06-21T07:13:11+02:00</updated>
    
        <entry>
            <title type="text">Oilless bearings (bushings) and their applications</title>
            <id>https://www.sankyo-oilless.de/com/news/oilless-bearings-bushings-and-their-applications</id>
            <link href="https://www.sankyo-oilless.de/com/news/oilless-bearings-bushings-and-their-applications"/>
            <summary type="html">
                <![CDATA[
                
                                            Oilless bearings with embedded solid lubricants are maintenance-free and used in conditions where ball bearings cannot be used due to high loads (static pressure, fluctuating pressure) or impact loads. 
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                 
 1. Introduction 
  
  Fig. 1:  Bearing with embedded solid lubricant 
 
 
 Oilless bearings with embedded solid lubricants  (Fig. 1)  are maintenance-free and used in conditions where ball bearings cannot be used due to high loads (static pressure, fluctuating pressure) or impact loads. They are also often used in harsh conditions that shorten bearing life, such as at: 
 
 
 high temperatures 
 
 
 dusty areas 
 
 
 under sea water 
 
 
 under chemical solutions 
 
 
 low sliding speed 
 
 
 in locations where space saving is required 
 
 
 In recent years, the demand for robust bearings that can be used at higher speeds or in harsh conditions (dirt, high temperatures, ...) has increased. 
 
 
 
 2. Solid lubrication system 
  
  Fig. 2:  Graphite crystal structure 
 
 
 The solid lubricant embedded in bearings is graphite, which has a crystalline structure (hcp) with low shear strength  (Fig. 2) .    Graphite is chemically stable and has excellent thermal stability. It can be used in the temperature range between 200° to 400° (without additional cooling).    When sliding, graphite is discharged from graphite pockets and transfered to the counterpart material, creating a lubricated surface with low shear strength  (Fig. 3) .    In some cases, oilless bearings are also used with oil-soaked graphite (only on request) for further improved sliding properties (friction, wear, anti-seizure property). 
 
  
  Fig. 3:  Discharge and transfer of graphite 
 
 
 
 3. Approach to high-performance bearings 
  
  Fig. 4:  Bearing wear process 
 
 
 In general, sliding materials transfer from the initial running-in period (I) to the low-friction steady state (II)  (Fig. 4) .   This means that the ability to promptly achieve a steady state and lower friction is crucial for high-performance bearings.   The friction coefficient of the friction surface with solid lubricants is calculated with the following formula:      μ = τ 0  / P H      ①     Note that τ 0  indicates the shear strength of lubrication films and P H  indicates the base surface hardness.    Based on formula  ① , we aimed to create high-performance bearings with wear resistance and low friction properties by dispersing hard particles into the base metal alloy. Hard particles dispersed into the copper alloy polish off adhering metals and projections on the counterpart material in the initial running-in period area (I) to ensure smooth surfaces.    In the low friction steady state area (II), the embedded graphite is discharged to create a steady and low friction lubrication state. At this time, the friction coefficient also decreases because the P H  in formula  ①  is higher than that of normal alloy hardness, which prevents the material from moving to the fatigue failure area (III).    As just described, excellent wear resistance and low friction properties are ensured by dispersing hard particles into the copper alloy base metal. 
 
 
 
 4. High-performance bearings 
 
 To respond to a customer request, we developed high-performance bearings ( SO#50SP8  and  SO#50SP13 ) by increasing the degree of hardness of copper alloys, which have been used as bearing materials, and dispersing hard particles into them  (Table 1) . 
 
 
   Table 1:   Materials and applications of Oilless Bearings 
 
  Classification name  Material No.  Application  
  High-strength brass 
 SO#50SP2 
 (CuZn25Al or eq) 
 
 Automobile production facilities 
 (used for multiple purposes) 
 
 
 
 SO#50 SP3 
 Construction machines 
 (high durability) 
 
 
 
 SO#50SP8 
 Toggle type injection molding machine 
 (excellent running in property and wear resistance) 
 
 
  Aluminum bronze 
 SO#50SP5 
 Outdoor crane, water turbine, water gate 
 (high loads) 
 
 
 
 SO#50SP7 
 Mill roller 
 (very high compressive strengths) 
 
 
 
 SO#50SP13 
 Steel mill roller, Grate roller 
 (excellent heat resistance and wear resistance) 
 
 
 
 
 
 
 
 5. Capability of high-performance bearings 
 
  
  Fig. 5:  Wear resistance of  SO#50SP8  
 
   (1) Oilless bearings with excellent wear resistance for high-load applications      Fig. 5  shows the wear resistance of a bearing ( SO#50SP8 ) made of a high-strength brass copper alloy dispersed with hard particles (the results obtained from a sliding test).    When compared to  SO#50SP2  (equivalent to CAC304), which is a high-strength brass copper alloy that has higher wear resistance than other bearing materials, the wear amount of  SO#50SP8 , which is dispersed with hard particles, is just 25% of it. 
 
 
 
  
  Fig. 6:  High-temperature characteristics of  SO#50SP13  
  Test conditions:  
 
 
 
 
 
 
  Surface pressure : 50N/mm² 
 
 
  Sliding speed : 1m/min 
 
 
 
 
 
 
  No lubrication  
 
 
  Counterpart : C45 + induction hardening (≥ HRC50) 
 
 
 
 
 
 
 
   (2) Oilless bearings for high-temperature environments     Oil and grease cannot be used for lubrication, because they deteriorate at high temperature.   Even the degree of hardness of high-strength brass ( SO#50SP2 ) materials significantly decreases when the temperature is higher than 200°C.    The amount of decrease in hardness for  SO#50SP13 , which is an oilless bearing made of aluminum bronze dispersed with hard particles, is in the range from 200° to 300°C small. Therefore it can be used in high-temperature environments  (Fig. 6) . 
 
 
 
 
 
  SO#50SP2  (eq. to CAC304)   Hardness: ≥ HB 210 
  
 
  SO#50SP13    Hardness: ≥ HB 280 
  
  Fig. 7:  Conditions of bushings covered with burned ashes 
 
   (3) Oilless bearings with excellent robustness     Aluminum bronze has excellent corrosion resistance at high temperatures.   It is used in drying, combustion, and post-combustion processes as a sliding material for grates in incinerators.   It is also used for bushings for a pusher lever on the device that pushes out burned ashes from under water (environment where wet burned ashes get on the bushing).     Fig. 7  shows the comparison between  SO#50SP2  (equivalent to CAC304) and  SO#50SP13 .   Both were used as bushings for a pusher lever for one year. The hardness of the  SO#50SP2  bushing has significantly decreased compared to its hardness when manufactured (HB 210 and above) and there is corrosion damage to the edge.    On the other hand,  SO#50SP13  does not have any corrosion or decrease in hardness and the surface under the adhering substance is in good condition with a small amount of wear. The hard particles with adequate hardness keep the amount of wear on the counterpart material small, exhibiting excellent robustness. 
 
 
 
 6. Conclusion 
 
 There are two types of oilless bearings with embedded solid lubricants (graphite).    One is high-strength brass bearings with excellent running in property and the other is aluminum bronze bearings with excellent robustness.     SO#50SP8  and  SO#50SP13  bearings, which are made of base metals dispersed with hard particles, exhibit excellent wear resistance and robustness at high temperatures.    They can also be used in special environments where normal bearings cannot be used.   These are created by the synergistic effect of graphite (solid lubricant) and high-performance base materials and exhibit high adaptability. 
 
 
                ]]>
            </content>

                            <updated>2023-08-14T00:00:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">Deepest sympathy</title>
            <id>https://www.sankyo-oilless.de/com/news/deepest-sympathy</id>
            <link href="https://www.sankyo-oilless.de/com/news/deepest-sympathy"/>
            <summary type="html">
                <![CDATA[
                
                                            We would like to express our deepest condolences to the bereaved families and friends, who lost their loved ones in the massive earthquake that struck southeastern Turkey on February 6, 2023.
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                   We would like to express our deepest condolences to the bereaved families and friends, who lost their loved ones in the massive earthquake that struck southeastern Turkey on February 6, 2023. At the same time, we would like to express our deepest sympathies to all those who have been affected by the earthquake.    The SANKYO OILLESS Group decided to donate from our local subsidiary SANKYO OILLESS Makine San. Tic. Ltd. Sti in Turkey and from Sankyo Oilless Industry Inc. in Japan to support the suffered peoples and the reconstruction of the affected areas. The former donation will be directed to Disaster and Emergency Management Authority (AFAD) and the later to AFAD through the Embassy of the Republic of Turkey in Japan.    The entire SANKYO OILLESS Group sincerely hopes for the earliest possible recovery of the disaster suffered areas.   
                ]]>
            </content>

                            <updated>2023-02-24T00:00:00+01:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">SANKYO OILLESS - Large bushings for all applications</title>
            <id>https://www.sankyo-oilless.de/com/news/sankyo-oilless-large-bushings-for-all-applications</id>
            <link href="https://www.sankyo-oilless.de/com/news/sankyo-oilless-large-bushings-for-all-applications"/>
            <summary type="html">
                <![CDATA[
                
                                            Now SANKYO OILLESS is able to fulfill the market demand for large bushings. These bushings run maintenance-free in standard applications, under harsh conditions and heavy loads.
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                   SANKYO OILLESS Industry GmbH is a leading company in the field of manufacturing and developing high-quality and maintenance-free sliding elements and plain bearing systems. In addition to our wide range of standard products, we provide customised components for mechanical engineering, crane construction, press dies, mould making, wind turbines and offshore applications.    Thanks to the expansion of our machine park, it is now possible to manufacture large bushings cost-effectively. This allows us to replace bushings that previously consisted of segments with solid bushings. The advantage is the improved fitting accuracy with reduced assembly effort.    For an optimal fulfilment of your requirements, we offer the custom-made bushings in all common SANKYO materials and in combination with different solid lubricants.    This makes it possible to replace existing components with maintenance-free SANKYO sliding elements at any time.   
 
 
 
    
 
   Due to the combination of heavy-duty base materials and application-specific solid lubricants, SANKYO sliding elements achieve a very long service life time with minimum wear. The solid lubricant is present throughout the entire service life, which is why there is no need for additional lubrication of the bearing point. The maintenance effort is thereby reduced to a minimum and no environmentally harmful lubricating oils need to be used.    Possible sizes and application examples can be found in our YouTube video &#039;SANKYO OILLESS - Large bushings&#039;.   
 
 
 
 
                ]]>
            </content>

                            <updated>2022-10-26T23:45:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">SANKYO OILLESS - maintenance free sliding materials</title>
            <id>https://www.sankyo-oilless.de/com/news/sankyo-oilless-maintenance-free-sliding-materials</id>
            <link href="https://www.sankyo-oilless.de/com/news/sankyo-oilless-maintenance-free-sliding-materials"/>
            <summary type="html">
                <![CDATA[
                
                                            Do you desire to protect the environment? Do you like to operate for extended periods without maintenance under offshore conditions? Your solution for maintenance-free bearings is here!
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                   SANKYO OILLESS Industry is a leading company in the field of manufacturing and developing high-quality and maintenance-free sliding elements and slide bearing systems. Besides our wide range of standard products, we also offer custom-made parts for offshore applications, mechanical engineering, press-dies, mould making or maintenance.    For special offshore applications, e.g. salty and underwater conditions, we recommend our proven combination of SO#50SP5 (an aluminum bronze) and our special solid lubricant GR9. Our SO#50SP5 has excellent corrosion resistance. The electrolytic corrosion is even more reduced by GR9. This combination is used in the offshore industry for many years already resulting in very positive experiences.    Due to the combination of heavy-duty base materials and application-specific solid lubricants, SANKYO sliding elements achieve a very long service life with the lowest wear. Self-lubrication eliminates the need for lubrication of the bearing point, so that maintenance is reduced to a minimum and no environmentally harmful lubricating oils need to be used.    For further general product and material information you may also watch our YouTube video ‘SANKYO OILLESS maintenance free sliding materials’.   
 
 
 
    
 
   We have a global network of production facilities (e.g. in Portugal, Turkey, Japan etc.) and sales offices, from where we can support our customers quickly and efficiently.    Our list of global and Western European customers includes many well-known companies in the fields of design and manufacturing of equipment for the offshore industry, mechanical engineering as well as for the plastics and stamping industry.  If you have any further questions, we look forward to hearing from you.   
 
 
 
 
                ]]>
            </content>

                            <updated>2022-05-16T00:00:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">KOCU-KE - the new inclined ejectore core unit</title>
            <id>https://www.sankyo-oilless.de/com/news/kocu-ke-the-new-inclined-ejectore-core-unit</id>
            <link href="https://www.sankyo-oilless.de/com/news/kocu-ke-the-new-inclined-ejectore-core-unit"/>
            <summary type="html">
                <![CDATA[
                
                                            The new, temperature-controlled inclined ejector core unit! An extension of Sankyo&#039;s Kocu series, which is successful for decades.
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                 
   The new cooling inclined ejector core unit - the KOCU-KE!   
 
 
   An extension of SANKYO&#039;s KOCU series, which is successful for decades.    In cooperation with and inspired by our customers, we have developed the new KOCU-KE.     This offers the possibility to realise the cooling water connections inside the mould. Thanks to the new geometry of the adapter, the connection can be made both on one side and looped through. Corresponding counterbores for the holes are already predefined.   
 
 
 
 
 
    
 
   Due to the innovative fixing of the bolt, the tool can be easily dismantled (e.g. for tuning work) without having to remove the cooling water connections. The KOCU itself remains in the tool.   
   
   Please find further information on the KOCU-KE on the product page.   
 
 
 
 
 
                ]]>
            </content>

                            <updated>2022-03-30T12:45:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">SUFC - EFFICIENT AND EFFECTIVE TRIMMING</title>
            <id>https://www.sankyo-oilless.de/com/news/sufc-efficient-and-effective-trimming</id>
            <link href="https://www.sankyo-oilless.de/com/news/sufc-efficient-and-effective-trimming"/>
            <summary type="html">
                <![CDATA[
                
                                            We have developed the SUFC, the so-called floating cutter to greatly improve and reduce burrs and chips during the stamping cutting of sheet metal panels.
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                   The current environmental issues are having an increasing impact&amp;nbsp; on all areas of manufacturing, none more so than that of automobile production.    
  Many new, innovative methods and materials have been introduced to reduce a vehicles weight, such as the use of aluminium and composite materials. This can been seen especially in the recent&amp;nbsp; developments of electric vehicles.   
  In terms of production productivity, the introduction of servo presses has realized increases in the productivity of sheet metal stamping and processing.  
 &amp;nbsp; 
  Parallel to this, SANKYO have been developing and producing products to aid in these increases in efficiency.   
  During the process of&amp;nbsp; stamping and trimming sheet metal. Often burrs and chips occur, which is especially Important to avoid&amp;nbsp; for&amp;nbsp; parts that require a critical trim line. When this happens, it may mean that the part has to be re-worked. Burring may also cause problems during assembly, for example marrying of parts. In order to overcome these problems, SANKYO have developed the SUFC floating cutter.  
  Using the SUFC will greatly reduce, if not eliminate burred and chips parts.   Since its introduction in 2019, the SUFC has been used extensively in the Japanese market.   
  The SUFC is assembled as an integral part of a tools upper trim cutter. This ensures a clean trim line ensuring that burrs and chips are kept to a minimum and in doing so, increases efficiencies and reduces the need for reworking.   
  In the case of the upper die blade being of a nonstandard shape or size. The SUFC can be adapted to suit. The cutters installation is made easy due to the 0.5mm horizontal tolerance and can be adjusted accordingly when assembling the upper blade of the tool.   In addition the SUFC provides an improvement in the ease in which scrape falls out.  
 &amp;nbsp; 
   FEATURES OF SUFC    
  • Life time: 500,000 cycles durable without maintenance   
  • Max. stroke: 6mm   
  • Suitable especially aluminium and steel sheet metal panels   
  • Open space around the cutter   
  • Off-set structure: non-interference on pad side  
                ]]>
            </content>

                            <updated>2021-01-11T07:00:00+01:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">We are here for you</title>
            <id>https://www.sankyo-oilless.de/com/news/we-are-here-for-you</id>
            <link href="https://www.sankyo-oilless.de/com/news/we-are-here-for-you"/>
            <summary type="html">
                <![CDATA[
                
                                            Important information
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                   Dear Ladies and Gentlemen,    
      Unfortunately, we are currently experiencing how rapidly the corona virus (COVID-19) is spreading worldwide.&amp;nbsp;  Protecting and maintaining the health of our employees is our first duty.&amp;nbsp;In addition, securing the supply chain and availability of the articles is also a high priority for SANKYO OILLESS.    For this reason, we have taken extensive measures to meet our social and economic responsibilities.&amp;nbsp;We would like to inform you about some of these measures that we have already implemented. The primary goal is to prevent the virus from spreading as much as possible while at the same time maintaining our business operations, including for your company:&amp;nbsp;    
 
   Part of our workforce is currently available in the home office during normal business hours. This is to protect the health of our employees, reduce the risk of the virus spreading and ensure our reachability for you - our customers.   
   Until further notice, we forego business trips and personal appointments with customers. We are happy to assist you via Skype or telephone and of course by email.   
   All of our employees are required to adhere strictly to the hygiene recommendations of the WHO.   
 
     There is currently no risk of delivery or production bottlenecks.&amp;nbsp;Our technical field service is still available to you by phone or email.  In addition, you can continue to contact your known contact person if you wish a quotation.&amp;nbsp;Due to the current changing daily situation, we can unfortunately not give you any guarantee of unrestricted delivery capability.    We wish you, your family and colleagues all the best and stay healthy!   
                ]]>
            </content>

                            <updated>2020-03-29T07:00:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">New Website and Webshop</title>
            <id>https://www.sankyo-oilless.de/com/news/new-website-and-webshop</id>
            <link href="https://www.sankyo-oilless.de/com/news/new-website-and-webshop"/>
            <summary type="html">
                <![CDATA[
                
                                            Find products faster and inquire online!
                                        ]]>
            </summary>
            <content type="html">
                <![CDATA[
                  We constantly strive to provide our customers with excellent service. Therefore, we are especially pleased to present you our new website with attached webshop. Our webshop offers you the possibility to quickly and easily select the right products from our versatile assortment and to inquire directly online.  
                ]]>
            </content>

                            <updated>2018-10-09T09:00:00+02:00</updated>
                    </entry>

    
</feed>
