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NSK bearing inspection and inspection common sense
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Analyze the calculations to determine the various technical objectives and quality objectives of the main engine using these NSK bearings; or to improve these objectives through technological methods; for example, to determine the detailed objectives that the depicted host reversal accuracy can reach; The detailed value of the bearing reversal accuracy; as in the device technology; it is often necessary to know the axis and the seat hole and the orientation of the external axis error of the bearing device; the method of adopting the corresponding maximum value reverse device; Can offset each other to the maximum limit; then get higher spindle reversal accuracy, and then the device shop often needs to measure the detailed dimensions of the bearing device appearance; and match the actual dimensions of the main body's journal and seat hole; The bearing cooperation of the same batch of mainframes is relatively uniform; it is not too loose or too tight; to prevent the appearance of raceway deformation or the appearance of cooperative external activities; it is beneficial to ensure spindle reversal accuracy and operation life.
Always return; view NSK bearings; users need to have the following common sense:
(1) Which specification is used for the inspection of NSK bearing products,
(2) What are the items for the inspection of NSK bearing products; in order to check these items,
(3) NSK bearing products before the quality inspection; what preparation work needs to be done;
(4) The various inspection items of NSK bearing products are under the conditions of å•¥; using å•¥ method; using å•¥ instruments for inspection; the results of the inspection are necessary to be qualified within the scope of public service.
(5) NSK bearing products are sometimes in large quantities; they cannot be inspected 100%; then a sampling plan should be selected; how many quantities should be selected for inspection; more comprehensively, and the degree of satisfaction is representative of the quality of the overall commodity bearing; The results of the inspection are also measured in accordance with the å•¥ specification; to determine whether the goods are acceptable for the batch; or the unqualified batch that should be rejected.
Inspection inspection of NSK bearings can generally be divided into three categories; namely:
Routine view - a general view of routine NSK bearings when they arrive.
Customs view the NSK bearing and device related scale accuracy, rotation accuracy, bearing clearance and bearing residual magnetic strength and other items to view.
Special View - View the oscillation quality, noise quality and other special requirements for bearings of NSK bearings.
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Common types and uses of pliers
Pliers have many functions and are used in many industries. The pliers used in different industries are also different. Generally, the more commonly used pliers are:
1. Wire stripper
Wire strippers are commonly used tools for internal electricians, motor repairs, and instrumentation electricians. They are composed of knife edges, crimping ports and clamp handles. They are mainly used for stripping plastic and rubber insulated wires and cable core wires.
2. Wire cutters
Also called a vise, it is a kind of clamp and cutting tool. It is composed of jaws, tooth edges, knife edges, guillotines and pliers handles. It is mostly used to pick up nails or break nails and iron wires.
3. Nozzle pliers
It can be divided into electrical and electronic categories. It is mainly used for cutting injection molding machine products, plastic products, and injection nozzles. It is also suitable for cutting metal products and electronic component pins.
4. Needle-nose pliers
Also known as trimmers, pointed pliers, and pointed pliers. They are composed of pointed tips, knife edges and pliers handles. They are generally made of 45# steel. They are used to cut single and multi-strand wires with thinner diameters and to give orders. Stranded wire joint bending, stripping of plastic insulation layer, etc., can be operated in a relatively small working space.
5. Curved nose pliers
Also called elbow pliers, its function is similar to that of needle-nose pliers without cutting edge, and it is suitable for use in narrow or recessed working spaces.
6. Flat nose pliers
It is a commonly used tool for assembly of metal parts and telecommunications engineering. It is generally used to bend metal sheets and metal filaments to make them into the required shape. In repair work, they are used to install and pull out pins, springs, etc.
7. Diagonal pliers
Mainly used to cut metal wires, flat-nose diagonal pliers are suitable for use in recessed working spaces.
8. Top cutting pliers
End-cutting pliers are similar to diagonal pliers. They are mainly used for cutting steel wires with the cutting edge at the top.
9. Water Pump pliers
The function is similar to a pipe wrench, but it is lighter, smaller and easier to use than a pipe wrench. However, the clamping force is not as good as a pipe wrench. Generally, it is only suitable for household non-professional emergency or simple installation of water pipes.
10. Slip joint pliers
The shape resembles a carp. The opening width of the jaws has two adjustment positions, which can be enlarged or reduced. It is mainly used to clamp round parts. It can also replace small nuts and small bolts with a wrench. It is often used in the auto repair industry.
11. Circlip pliers
Commonly known as circlip pliers, it is a special tool used to install inner and outer circlips, and can also be used to remove circlips. .
12. Vigorous pliers
It is mainly used for clamping parts for riveting, welding, grinding, etc. It can also be used as a wrench. Its characteristic is that the jaws can be locked and generate a large clamping force to prevent the clamped parts from loosening.
Wire Stripper,Needle-Nose Pliers,Wire Cutters,Curved Nose Pliers
Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaou.com