Market participants said that in the first week of April, the price of U.S. styrene-butadiene rubber (non-oil-extended 1502) with strong demand and limited supply soared by US$200/ton, and it had reached US$2,596/ton by the end of last week.
According to statistics, the US automobile sales in March increased by 27% over the same period of last year to 850,308 units. The increase in car sales will drive the demand for tires, which will in turn drive the growth in the demand for styrene-butadiene rubber raw materials for tires. Various signs of the market show that the US auto industry has embarked on the road to recovery. In the second quarter, the industry may need to import more SBR. Analysts at ICIS expect that demand for styrene butadiene rubber will increase by 20% this year in the United States, and demand for styrene butadiene rubber for automobile tires will account for about 70% of total demand.
In Asia, due to the fact that the major downstream tire manufacturers have already prepared enough raw materials for the second quarter, spot prices for styrene butadiene rubber from US$2,450 to 2,500/tonne (CFR, Asia) have been strongly resisted by tire manufacturers, and styrene butadiene rubber producers We will look to the United States. A Korean styrene butadiene rubber producer said that the company will export 6,000 tons of styrene-butadiene rubber to the United States in April. He said: “The amount of styrene-butadiene rubber we will export to the United States in April will increase significantly, and we expect exports to remain strong in May.†It is understood that South Korea exports styrene-butadiene rubber to the United States in April (non-oil-extended 1502). The price is 2350 ~ 2400 US dollars / ton (FOB), the freight from South Korea to the United States is approximately 200 US dollars / ton, so the arrival price of 2550 ~ 2600 US dollars / ton.
A styrene butadiene rubber producer in Southeast Asia also stated that it has received inquiries from customers in the United States. The customer hopes that the manufacturers will increase their exports to the United States in April and May.
Steel cage spherical roller bearing, which have two rows of barrel shaped symmetrical rollers, and held in a brass cage without fixed middle block. a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis .Therefore, spherical roller bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, The center point of the sphere in the outer ring raceway is at the roller bearing axis. modified line contact between rollers and internal & external ring to achieve maximum loading capacity. mainly bear radial load.
Feature:
Both the dynamic load rating and rating life equations contain no difference regarding cage design and material (brass or steel).
Design used for medium size bearings operating at medium to high speeds and featuring high load carrying capacities
Two-piece window type pressed steel cage guided on the inner ring
When the rolling bearing is equipped with a steel cage, hard contaminants might appear as a result of the adhesive wear at the cage-rolling element contact.
Consequently the cage design has evolved to achieve higher and higher bearing load rating capacities, by incorporating more rollers, and lower costs, by replacing brass with cheaper low carbon steel, probably also for reasons connected to the economies of scale pursued by the biggest bearing manufacturers.
APPLICATION:
Spherical Roller Bearing are available with heavy duty rollers and cages that are suitable for extreme demand harsh applications such as vibratory screens. Mining Conveyor Machine, and mining bulk Conveyor Pulley. In this sort of aggressive operational environment, the spherical roller bearing is the only type that delivers acceptable service life. generally have a longer life span than other bearing types.
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