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How to buy agricultural machinery bearings 2011-07-28
Agricultural bearing a variety of mechanical axis of rotation or moving parts of the supporting parts are widely used in agricultural vehicles, tractors, diesel engines, motors, threshers and other agricultural machinery. Bearing bearing code used to buy, but bearing code more complicated, and if the farm hand to grasp the law of identification bearing code, buy it easy.
Bearings are some commonly used standard model, code-named "0", the tolerance level for the "G" (general level), the general bearing of the first paragraph can not write, so the code more to the basic code of 7 digits that.
To illustrate the meaning of the bearing code: case 7002136 (135 series diesel engine shaft main bearing), the basic code from right to left to identify. "36" digit of light, which is calculated as 36 × 5 = 180 mm; "1" in diameter series special light; "2" indicates the type of cylindrical roller bearings; "00" indicates the bearing outer structure without ribs; "7" series, said narrow width. If the machine hand to buy 7-digit code to other standard models bearing and so on.
Buy bearing multiple reference bearing diameter, bearing diameter right in the basic code using the first and second digit represents. Sub-standard and non-standard bearing bore diameter, the difference between non-standard ID is not an integer or integer multiples of 5. To facilitate machine hand purchase.
To illustrate:
① bearing diameter of 9 mm below the actual size with the right end of the first digit, said. For example, bearing number 18, the inner diameter of 8 mm.
② bearing 10-17 mm in diameter with a fixed number, said. For example, bearing No. 100,201,302,403, and its diameter were right two-digit code is 00,01,02,03, 10,12,15,17 mm internal diameter were fixed digits.
③ bearing diameter in the 20-480 mm (except 22,28,32), in addition to diameter size from number 5 said.
④ bearing diameter 500 mm (22,28,32) with a fraction, the denominator of that diameter, the size of the bearing elements, said series, type and structure. For example, bearing No. 30031/560, its diameter is 560 mm, the other and so on.
