What is SDX Bearing? (2)

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  What is SDX Bearing? (2) ✅ FAQ 1. What is the difference between SDX and dry-bearing SDU? SDU is a dry-bearing that can operate without lubrication and is resistant to most solvents and industrial fluids. On the other hand, SDX bearings are pre-lubricated by applying grease during assembly and are generally used in agricultural machinery, hydraulic machinery, and automobiles. 2. What is the plating material for the outer diameter? It is usually tin-plated with a thickness of about 0.002 mm, and copper plating is available upon request. 3. Is there any difference in performance depending on the POM colors? There is no difference in the performance and price from the standard product (yellow POM + tin plating). Other colors besides yellow POM can be made to order. SDX bearings with PEEK are recommended for high-temperature environments such as high-pressure gear pumps, water injection pumps, paint spraying, etc. 4. What material is recommended for the shaft? It can be used with all...
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Rolling Bearing and Oilless Bearing

 

Rolling Bearing and Oilless Bearing



What is the difference between oilless bearings and rolling bearings?This question is one of the most frequently asked questions by customers, and here is the table below showing the advantages and disadvantages of each bearing.


※ A-Excellent B-Average C-Below Average


1. Rolling Bearings

 

① Advantages

  - Standardized goods, high compatibility, and cost-effective except for special products

  - No performance degradation until around 100℃

  - Good accommodate to thrust and radial loads

  - Very low frictional resistance when starting

 

② Disadvantages

  - Large Inside and Outside diameter for narrow width

  - Requires handle with care when fitting the inner and outer rings

  - Weak to impact and noise occurrence depending on the precision

  - Repeated stress on the raceway, and generally not allowed axial change



2. Oilless Bearings 
  

① Advantages

  - Easy to make to order as per requirement

  - No need for a separate lubricant by using solid lubricants such as graphite and plastic

  - Good performance in boundary friction, high load, low-speed motion, 

    reciprocating motion, impact load, etc.

  - Various options for materials and dimensions in consideration of working conditions

 

② Disadvantages

  - Unable to use at high speed without lubrication

  - High friction coefficient compared to regular lubricated sliding bearings, 

    which can cause seizures or shorten the lifespan





As you see above, rolling bearings and oilless bearings have different characteristics, it is essential to select a bearing that meets the required service life or design specifications (working conditions).
If you would like to use oilless bearings for new machines or special conditions, please contact SGO.


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Bronze Casting Processes for Oil-less Bearings(3)

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  Bronze Casting Processes  for Oil-less Bearings (3) The last letter  covered Horizontal Continuous Casting, and we will introduce Metal Extrusion as the final episode of the casting process for oil-less bearings. Extrusion   Extrusion is a forming process that enables the continuous production of tubular or rod-shaped products with a uniform cross-section by extruding material through a mold. The material coming out of the mold is called the extrudate, and non-metals such as ceramics, plastics, and polymers are also suitable for extrusion.   UBE 2,750 ton Hot Extrusion Machine   Extrusion at room temperature is called cold extrusion, and extrusion by heating the billet above its recrystallization temperature to soften the metal is called hot extrusion. The extrusion process has a high initial cost and requires high compressive force, but it has many advantages technically and economically. Heated Billet Before Extrusion   Continuous casting allows th...
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SGO THEDVELON Bearings

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  SGO THEDVELON Bearings SGO THEDVELON THEDVELON  is a type of oilless bearing that  offsets the disadvantages of the sintered metal bearings by applying a heat treatment on a steel-backed material. It can be used for medium to high loads by supplementing the insufficient mechanical rigidity through diffusion-bonding the sintered layer and the back-steel, and the porosity of the sintered layer can also be varied. While it has an excellent abrasion resistance, it is highly price competitive owing to lower material costs compared to the conventional brass bearings. For any inquiries about   THEDVELON , please contact us by clicking the button below. INQUIRY
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Types and Characteristics of Major Copper Alloys used for Oil-less Bearings

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  Types and Characteristics of  Major Copper Alloys used for Oil-less Bearings SGO mainly manufactures Oil-less bearings using high-strength brass but used different bronzes per application. We will introduce the most used bronzes with characteristics and their uses. ※ KS D 6024 We have only introduced five materials that have been asked a lot, and there are many other copper alloy materials. You need to choose the base metal and solid lubricant depending on the working load, speed, and other working conditions of the bearings. SGO has a one-stop process from material to finished product, so if you need advice on Oil-less bearing, please don't hesitate to contact us. INQUIRY
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