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Liên hệ
igus® Vietnam Company Limited

Unit 4, 7th Floor, Standard Factory B, Tan Thuan Export Processing Zone, Tan Thuan Street

District 7, HCM City, Vietnam

+84 28 3636 4189
VN(VI)

High-performance bearings for extreme temperature fluctuations in brewery plants

iglidur plain bearings at alternating temperatures and chemically aggressive cleaning agents

Kaspar Schulz Brauereimaschinenfabrik & Apparatebauanstalt KG is the world market leader for small and medium-sized breweries. It installed a jackknife that is used in brewery plants in the production of beer. The jackknife cuts slits in the brewer grains. Brewer grains are filter aids obtained from malt residues. This process is important so that the brewer grains can be removed afterwards. The components used here must meet various requirements such as temperature resistance. Bearings made of the FDA-compliant high-temperature material iglidur A500 are used here.

Profile

  • What was needed: plain bearing made of iglidur A500
  • Requirements: the material of the bearing had to be able to withstand changing temperatures between 0 and 120°C, as well as cleaning with aggressive chemical cleaning agents and had to have FDA approval.
  • Industry: beverage industry
  • Success for the customer: the bearings made of iglidur A500  can operate in a temperature range from -100°C to +250°C. The material is resistant to all relevant chemical compounds. Overall, by using iglidur plain bearings there was an increase in the service life of about 280% compared to the previous gunmetal bearing.
Brewery

Problem

During the beerewing process , the wort is produced in the brewhouse. For this purpose, sugar is dissolved from the malt, which is necessary for fermentation and alcohol development. The solid and liquid phases must then be separated again. The residues of the malt, the so-called brewer grains, serve as filter aids. To obtain the desired filter layer in the process tank, the brewer grains are allowed to sediment at the bottom of the tank. This leads to an increase in filtration efficiency and ultimately to an impenetrable layer. To make it permeable again in a controlled manner, slits are cut into the spent grains with the knives of the so-called chopper. As a result, a controlled movement takes place again. After complete separation of the liquid and solid phases, the brewer grains must be removed from the lauter tun. Various technical devices are used for this purpose.
The Kaspar Schulz company developed the so-called jackknives for this purpose. The knives, which are used to slit the brewer grains, are rotatably mounted. When the chopping unit rotates clockwise, the knives cut the brewer grains. When the chopping unit rotates in the opposite direction, the knives fold over and push the brewer grains towards a discharge opening. No further actuators or cylinders are required.
During the process, the equipment in the process vessel is exposed to a wide range of adverse influences. These requirements also applied to the bearing of the jackknives, for which a suitable solution had to be found.
The material of the bearing had to be able to withstand changing temperatures between 0 and 120°C as well as cleaning with aggressive chemical cleaning agents without any problems and had to have FDA approval.
Previously, gunmetal bearings were used to mount the knives, which were difficult to work with, showed signs of wear when in contact with some cleaning agents, and were not FDA compliant. In addition, they expanded rapidly in hot conditions and had to be adjusted for cold or warm conditions.

Solution

Among other things, for the bearing of the jackknives described, the company Kaspar Schulz has since that time used plain bearings made of the material iglidur A500, which meets all the customer's requirements.
This means the extreme temperatures are no challenge for these iglidur plain bearings, which operate in application ranges from -100°C to +250°C. 
The use of organic raw materials as well as the hygiene and cleanliness requirements of a food processing plant necessitate the use of chemical cleaning agents and disinfectants. The resistance of iglidur A500 against all relevant chemical compounds allows the choice of the preparation to be adapted to the contamination and not to the materials used. And the bearings were also able to solve the problem of completely removing the chemical cleaning agents after the cleaning process due to their low water absorption.
Finally, the material properties were allowed to change only insignificantly over the entire temperature range as well as during cleaning with steam, which the high-performance material fulfils with a coefficient of expansion of approx. 0.0001/K. Overall, by the application of the iglidur plain bearing an increase in the service life of about 280% compared to the previous gunmetal bearing could be achieved.

 


Brewery Jackknife when turning clockwise. The brewer grains (not shown in the picture) are slit.
Brewery Jackknife when turning counter-clockwise. The knives fold down and the brewer grains (not shown in the picture) are pushed out.

Kaspar Schulz Brauereimaschinenfabrik & Apparatebauanstalt KG, Christoph Bissinger, Bamberg, Germany

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Aw Kai Hua

Product Manager iglidur® bearings ASEAN

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CÔNG TY TNHH IGUS VIỆT NAM

Đơn vị 4, Tầng 7, Xưởng tiêu chuẩn B, Đường Tân Thuận, Khu Chế Xuất Tân Thuận, Phường Tân Thuận Đông, Quận 7, Thành phố Hồ Chí Minh, Việt Nam

Số điện thoại: +84 28 3636 4189

Giấy chứng nhận đăng ký doanh nghiệp số: 0314214531

Ngày đăng ký lần đầu: 20-01-2017

Nơi cấp: SỞ KẾ HOẠCH VÀ ÐẦU TƯ THÀNH PHỐ HỒ CHÍ MINH

IGUS VIETNAM COMPANY LIMITED

Unit 4, 7th Floor, Standard Factory B, Tan Thuan Street, Tan Thuan Export Processing Zone, Tan Thuan Dong Ward, District 7, Ho Chi Minh City, Vietnam

Phone: +84 28 3636 4189

Tax code: 0314214531

Date of issuance: January 20, 2017

Place of issuance: DEPARTMENT OF PLANNING AND INVESTMENT OF HO CHI MINH CITY