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The New Zealand Railways Magazine, Volume 4, Issue 12 (April 1, 1930)

Contamination of the Lubricant

Contamination of the Lubricant.

(4) Carelessness in handling lubricants and their application by methods which permit contamination, are responsible for many bearing troubles. From the moment that the lubricants are received in barrels or tank cars they should be guarded against dirt, grit, water, and any possibility of mixing with other oils. Storage tanks into which barrels are emptied by the user should be covered thoroughly and marked plainly with the name and purpose of the oil. In distributing the oil throughout the plant, open containers should be avoided, and care should be taken that each container is used for only one kind of oil, to prevent mixing.

A Privately-Owned Railway In New Zealand. The new petrol engine and trailer, built at Invercargill for the Ohai Railway Board's private line between Wairio and Reeds, Southland. (The Ohai Railway Board operates traffic in the most important section of the southern brown coalfields.)

A Privately-Owned Railway In New Zealand.
The new petrol engine and trailer, built at Invercargill for the Ohai Railway Board's private line between Wairio and Reeds, Southland. (The Ohai Railway Board operates traffic in the most important section of the southern brown coalfields.)

Hand application of oil or grease is responsible for many impurities entering the bearing. The danger from this source is reduced somewhat by the use of closed oil cans and self-closing oil-hole covers on the bearings. The various types of automatic lubricating appliances are adapted more or less to the exclusion of foreign matter from the bearing. Bottle oilers and wick feed oilers are particularly desirable from this standpoint.

Circulation and splash lubrication systems are sensitive to the presence of foreign matter, since extreme purity of the lubricant is necessary in order that it may be able to maintain long-continued service. A frequent source of trouble is the accumulation of water in the circulation system which may be caused by leakage from water cooling systems or even condensation of water vapour from the atmosphere.

(To be concluded.)

page 52
page break
Empire Farmers’ Party Tour The South Island. (Rly. Publicity photos) (1) and (3) Empire Farmers’ Party leaving Pelorus Sounds (Marlborough) by launch; (2) fishing in the Sounds—catching a blue cod; (4) and (5) luncheon at Mr. R. D. Fell's home. Pelorus Sounds; (6) inspecting Merino rams at Amberley (Canterbury); (7) a scene in Nikau Bay, Pelorus Sounds; (8) and (9) arrival and welcome at Amberley Domain; (10) at Amberley Railway Station; (11) Mr. E. C. Bacon (England), replying to the address of welcome at Amberley; (12) Mr. A. V. Allen (left), manager of the South African Party; (13) and (14) members of the party partaking of afternoon tea, at Amberley.

Empire Farmers’ Party Tour The South Island.
(Rly. Publicity photos)
(1) and (3) Empire Farmers’ Party leaving Pelorus Sounds (Marlborough) by launch; (2) fishing in the Sounds—catching a blue cod; (4) and (5) luncheon at Mr. R. D. Fell's home. Pelorus Sounds; (6) inspecting Merino rams at Amberley (Canterbury); (7) a scene in Nikau Bay, Pelorus Sounds; (8) and (9) arrival and welcome at Amberley Domain; (10) at Amberley Railway Station; (11) Mr. E. C. Bacon (England), replying to the address of welcome at Amberley; (12) Mr. A. V. Allen (left), manager of the South African Party; (13) and (14) members of the party partaking of afternoon tea, at Amberley.