How to choose Changzhou automobile water pump bearings? Did you refer to its inner diameter when you bought it?

Bearings are the rotating shafts or movable parts of various machinery and are widely used in agricultural vehicles, tractors, diesel engines, electric motors, threshers and other agricultural machinery. The bearing codes are commonly used when choosing bearings, but the bearing codes are more complicated. If the agricultural machine masters the law of identifying the bearing codes, the purchase is easy.

Generally, the water pump bearings of Changzhou automobile water pump bearing manufacturers are some standard models, the code is "0", and the tolerance level is "G" (general level). Generally, one section of the bearing does not need to be written, so the code is mostly 7 digits of the basic code. Number representation. Now give an example to illustrate the meaning of bearing code: Example 7002136 (135 series diesel engine shaft main bearing), the basic code is identified from right to left. "36" two digits means the inner diameter, and the calculation method is 36×5=180 mm; "1" means the diameter series is extra light; "2" means the type is cylindrical roller bearing; "00" means the bearing structure has no outer ring Ribs; "7" means that the width series is narrow. If the operator chooses the 7-digit bearing code of other standard models, the same applies.

When choosing bearings, refer to the inner diameter of the bearing. The inner diameter of the bearing is represented by the first and second digits on the right in the basic code. The inner diameter of the water pump bearing is divided into standard and non-standard inner diameters. The difference is that the non-standard inner diameter is not an integer or an integer multiple of 5. For the convenience of the operator's purchase, we will illustrate with examples: 1. Bearings with an inner diameter of less than 9 mm are indicated by the actual size of one digit at the right end. For example, bearing number 18 has an inner diameter of 8 mm. 2. The inner diameter of the bearing is between 10 mm and 17 mm, expressed by a fixed number. For example, for bearing numbers 100, 201, 302, 403, the inner diameter codes are 00, 01, 02, 03 at the right end, and the inner diameters are 10, 12, 15, 17 mm fixed numbers. 3. The bearing inner diameter is between 20 mm and 480 mm (except 22, 28, 32), expressed as the quotient obtained by dividing the inner diameter by 5. 4. The inner diameter of the bearing above 500 mm (22, 28, 32) is expressed as a fraction, the denominator indicates the inner diameter, and the numerator indicates the size series, type and structure of the bearing. For example, bearing No. 30031/560 has an inner diameter of 560 mm, and so on.