When you buy the materials and process them, you need to check the materials
Then turning processing requires: Vernier cards, micrometers, depth gauges and the like, which may require a meter to measure
Then heat treatment: measure the hardness to see if the internal structure is deformed
Grinding: Make a meter to measure the size, smoothness, parallelism, vertical difference, roundness, etc.
Assembly: Measure the size of the finished product and the runout Ball bearings seem to have vibration and noise requirements.
cjz-1a type magnetometer
The cjz-1a type magnetometer is a special measuring instrument for bearing residual magnetism inspection. It is mainly used for spot inspection of finished bearings and can also be used in production lines. For parts sampling. The instrument has two main measuring ranges: lmt (milliter) and 2mt, which are used to check the qualification of residual magnetism. The instrument also has a large range of 10mt, which is used to check the residual magnetization value of bearings that have not been demagnetized.
The calibration of the instrument is carried out in a standard solenoid coil uniform magnetic field. The standard is transmitted by the Bureau of Metrology. The calibration accuracy and uniformity are good. The lmt calibration magnetic field of the instrument itself is also a solenoid coil, and It is equipped with a polarity conversion switch, which can be used to correct the measurement error of the instrument for n·s pole.
The instrument is also equipped with an out-of-tolerance signaling device. After selecting the appropriate out-of-tolerance limit, if the measured value exceeds this limit, the instrument will issue an audible and visual indication to facilitate timely detection of out-of-tolerance products.
The probe of the instrument is a cylindrical hand-held structure with a measuring surface diameter of 9mm. The sensing element uses a 4×2×0.2mm 3 Hall element. When the probe is packaged, the sensing element is 1± from the measuring surface. 0.05mm, so the sensing element can naturally maintain a distance of 1mm from the workpiece during measurement.
Technical indicators
1. Measuring range l mt 2 mt 10 mt
2. Sensitivity 0.02 mt
3. Accuracy l mt 2 mt 3.0 level
4. Calibration magnetic field ±l mt DC magnetic field
5. Over-tolerance signaling range 0.5～l mt
6. Power supply AC 220 v 50 hz
(No battery required )
7. Overall dimensions 250×212×140 (mm)
8. Display: watch pointer
8. Weight 3.5 kg