How to buy Agricultural Bearings

Bearing is rotating shaft of various mechanical or moving parts support, widely used in farm vehicles, tractors, diesel engines, electric motors, threshers and other agricultural machinery. Choose Common bearing code, but bearing code more complicated, if agricultural hand grasp identification bearing code of law, the purchase is easy.
Bearings are some of the commonly used standard model, codenamed "0" tolerance class "G" (ordinary level), the general agricultural bearings of the first paragraph can not write, so its more than seven-digit code representing the basic code.
To illustrate the meaning of bearing code: Example 7002136 (135 series diesel engine shaft main bearings), the basic code from right to left to identify. "36" within a two-digit representation of light, which is calculated as 36 × 5 = 180 mm; "1" represents the diameter of the series special light; "2" indicates the type of cylindrical roller bearings; "00" indicates the form of the outer bearing structure without ribs; "7" represents the width of the narrow series. If the machine hand to buy other standard models bearing seven-digit code can and so on.
Optional multi-reference bearing diameter bearings, tower crane bearing diameter in the basic code using the right end of the first, second digit indicates. Sub-standard and non-standard bearing bore diameter, the difference is not an integer or a non-standard inner diameter of the whole multiple of 5.
To facilitate machine hand purchase.
To illustrate:
① bearing diameter in 9 mm below the right end of the first digit is represented by the actual size. For example, the bearing 18, an inner diameter of 8 mm.
② bearing diameter of 10 - 17 mm is represented by a set number. Such as bearings 100, 201, 302, 403, an inner diameter of the right end of the two-digit code is respectively 00, 01, 02, 03, respectively, an inner diameter of 10, 12, 15, 17 mm fixed numbers.
③ bearing diameter in 20--480 mm (22, 28, except 32), in addition to the inner diameter of 5 resulting numbers.
④ bearing diameter of more than 500 mm (22, 28, 32), expressed as a fraction, the denominator represents the inner diameter, the numerator represents the size of the series, the type and structure of the deck crane bearing

. Example No. 30031/560 bearings, an inner diameter of 560 mm, the other and so on.