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Print machine lubricant
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Alternator seal design reduces bearing operating temperatures
Print machine lubricant
To reduce the overall weight of automobiles, various components are being made smaller and lighter. One such component is the alternator which, to achieve at least the same performance as earlier, larger alternators, must operate at higher speeds (18 000-20 000 rev/min).
Increased reliability in the lubrication of printing machines is said to be possible with a modular dual-line system announced by Dropsa, a centralized lubrication equipment manufacturer based in Surrey, UK.
This generates higher temperatures which can be alleviated only by increasing the size of the bearing air vents. The bearings are then more easily penetrated by dust and moisture. Contact seals cannot be used to exclude contaminants as they are only suitable for relatively low-speed operation. To solve this problem, SKF has designed a new type of seal for high-speed, high-temperature operation. A non-rubbing sealing washer of synthetic rubber forms a labyrinth with a flinger ring. Dust cannot enter this labyrinth and the flinger, which rotates with the
Ilk, lira//
bearing inner ring, prevents water from entering. Tests showed that bearing operating temperatures could be reduced from 95 to 70°C, which is obviously beneficial for grease life and thus bearing life. SKF GmbH, Postfach 1440, D-8720 Schweinfurt 1, FRG.
Canadian tribologists to discuss research for industry The Associate Committee on Tribology (ACOT) of the National Research Council of Canada is to hold the 5th ACOT Seminar on Tribology Research for Canadian Industry in Quebec, Canada, on 9 10 November 1989. Papers will be presented on various aspects of tribology, with emphasis on the link between research and application in Canadian industry. Those interested in presenting a paper have until 31 May 1989 to submit a 2~[ page abstract to: Dr R. L. Kushwaha, Agricultural
The system's modular nature allows servicing of the metering valves while the assembly is still in place without disturbing existing fittings. It is therefore particularly suited to printing machines that operate 24 h per day. The system comprises a base and feeder valves made of AISI 316 stainless steel, and can handle oil or grease. Dropsa UK Ltd, Sandylands House, Wick Road, Englefield Green, Surrey TW20 OH J, UK.
Engineering Department, University of Saskatchewan, Saskatoon, Saskatchewan S7N OWO, Canada.
National Lubricating Grease Institute
The Institute's Technical Committee frequently involves the Technical Representative from each of the organizations having membership in the NLGI, and others experienced in technical matters. Technical Committee work Is conducted mainly through subcommittees which are organized to handle various phases of activities. The Committee works in investigating and solving technical matters and in conjunction with NLGI's sister organizations. Should you be Interested in volunteering your skills towards the betterment of the Industry, please contact: Thomas G. Musilli Battenfeld-American, Inc. 1575 Clinton St. Buffalo, NY 14206
NLGI
For information on the 56th Annual Meeting, a n d a c o p y o f the information brochure lncluding our catalogue o f pubr~cations, please c o n t a c t the National Lubricating Grease Institute International Office.
International in Scope 154
April 89 Vol 22 No 2
ws
Alternator seal design reduces bearing operating temperatures
Print machine lubricant
To reduce the overall weight of automobiles, various components are being made smaller and lighter. One such component is the alternator which, to achieve at least the same performance as earlier, larger alternators, must operate at higher speeds (18 000-20 000 rev/min).
Increased reliability in the lubrication of printing machines is said to be possible with a modular dual-line system announced by Dropsa, a centralized lubrication equipment manufacturer based in Surrey, UK.
This generates higher temperatures which can be alleviated only by increasing the size of the bearing air vents. The bearings are then more easily penetrated by dust and moisture. Contact seals cannot be used to exclude contaminants as they are only suitable for relatively low-speed operation. To solve this problem, SKF has designed a new type of seal for high-speed, high-temperature operation. A non-rubbing sealing washer of synthetic rubber forms a labyrinth with a flinger ring. Dust cannot enter this labyrinth and the flinger, which rotates with the
Ilk, lira//
bearing inner ring, prevents water from entering. Tests showed that bearing operating temperatures could be reduced from 95 to 70°C, which is obviously beneficial for grease life and thus bearing life. SKF GmbH, Postfach 1440, D-8720 Schweinfurt 1, FRG.
Canadian tribologists to discuss research for industry The Associate Committee on Tribology (ACOT) of the National Research Council of Canada is to hold the 5th ACOT Seminar on Tribology Research for Canadian Industry in Quebec, Canada, on 9 10 November 1989. Papers will be presented on various aspects of tribology, with emphasis on the link between research and application in Canadian industry. Those interested in presenting a paper have until 31 May 1989 to submit a 2~[ page abstract to: Dr R. L. Kushwaha, Agricultural
The system's modular nature allows servicing of the metering valves while the assembly is still in place without disturbing existing fittings. It is therefore particularly suited to printing machines that operate 24 h per day. The system comprises a base and feeder valves made of AISI 316 stainless steel, and can handle oil or grease. Dropsa UK Ltd, Sandylands House, Wick Road, Englefield Green, Surrey TW20 OH J, UK.
Engineering Department, University of Saskatchewan, Saskatoon, Saskatchewan S7N OWO, Canada.
National Lubricating Grease Institute
The Institute's Technical Committee frequently involves the Technical Representative from each of the organizations having membership in the NLGI, and others experienced in technical matters. Technical Committee work Is conducted mainly through subcommittees which are organized to handle various phases of activities. The Committee works in investigating and solving technical matters and in conjunction with NLGI's sister organizations. Should you be Interested in volunteering your skills towards the betterment of the Industry, please contact: Thomas G. Musilli Battenfeld-American, Inc. 1575 Clinton St. Buffalo, NY 14206
NLGI
For information on the 56th Annual Meeting, a n d a c o p y o f the information brochure lncluding our catalogue o f pubr~cations, please c o n t a c t the National Lubricating Grease Institute International Office.
International in Scope 154
April 89 Vol 22 No 2