Key Points for Open End Wrench

1. Open end wrench pull the bolt or nut only in a limited space, the bolt or nut is pulled to the limit position, and then remove the wrench to repeat the original process.
2. Moved direction of the wrench should be pull to the inside, this operation more effort, if you must push out the wrench, open the palm of your hand to operate.
3. When tightening the bolts or nuts with an open-end wrench, the force on the wrench should be based on bolt tightening torque requirements, not too much, otherwise it will lead to thread slip.
4. When using an open-end wrench, if the position is too high, or only pinch a small part of the nut head, wrench in use will slip.
5. If the opening end of the open-end wrench is larger than the opposite platform width of the nut head, which also can cause the wrench to slip, make sure that the wrench and the nut are properly engaged.

Hand-held Power Tool Safety Technology

Hand-held power tools are divided into I, II, III class in accordance with security requirements.
Class I hand-held power tools rated voltage exceeds 50V, is non-secure voltage, It must be ground or zero for protection, but also must be connected leakage protection to ensure safety.
Class II hand-held power tools rated voltage exceeds 50V, but it uses double or reinforced insulation additional security measures. Double insulation means that  in addition to insulation work, as well as a protective insulating layer. When damage the insulation, operator isolate to charged body, it will not shock.
Class III hand-held power tools use safe voltage, it needs to have a good two-winding transformer isolated power supply, transformer rated voltage does not exceed 50V. So they is not necessary to connect ground, but be sure to install leakage protection.
Hand-held power tools must be installed isolation switch, short circuit protection, overload protection or leakage protection.

What Is The Hand Rivets?

Hand rivet is used of riveting one side of the workpiece. Usually dedicated to the blind rivet. Hand rivet is used for fastening riveted various types of sheet metal, pipes and other manufacturing industries.
Hand rivet is now widely used in the automotive, aviation, railway, refrigeration, elevators, switches, instruments, furniture, decoration and other mechanical and electrical products. To solve the sheet metal, thin tube welding fusible nut, it can be riveted, riveting has high efficiency solid, easy to use.
There are many types of hand rivet, hand rivet is divided into electric, manual and pneumatic according to the power type, manual rivet is the most widely used, easy to operate, with the appropriate tools, such as electric hand drill, impact drill and others to use.

Sinotools Will Participate in The 120th Canton Fair

China Import and Export Fair, also known as the Canton Fair, is held biannually in Guangzhou every spring and autumn, our company will participate in The 120th Canton Fair in the 15 to 19 October, Booth is 15.3B44.
Sinotools is China leading manufacturer & exporter of hand tools, garden tools & agriculture tools, main products include industrial hand tools, garden hand tools, such as hammers, pliers, wrenches, screwdrivers. If you are interested in our products, welcome to our show!

Chain Saw Maintenance

Chain saw maintenance, the most important is that the saw chain. Proper maintenance and sharpening the saw chain saw only a small pressure can be easily into the wood. When routine maintenance, pay attention to check whether there are cracks and broken rivets, replace any damaged or worn parts on the chain saw, then  match with new parts with the same shape and size as the original one.
If the filter of the chain saw is stuck by dirt, you need special filter to clean, and dry. Do not use a brush to clean wool filter.
Note that, even if the regulations require the use and maintenance of the chain saw, some parts of the power tool will have normal wear and tear, and therefore must be based on the model and use of parts and promptly replaced. These components include: chain, guide plate, transmission parts (clutch, clutch drum sprocket), filters, starter, spark plugs and shock absorber system parts.