Q:How to choose torque wrench for automobile assembly

Also known as the torque wrench torque wrench, common pointer is the maximum torque is 30KG, now most good garage is a selection of preset type adjustable torque wrench, due to various reasons the price origin, quality is uneven.

Q:How to distinguish between good and bad wrenches?

A wrench is a common tool for mounting and dismounting. A manually operated tool for screwing bolts, screws, nuts, and other threads to secure the opening or sleeve of a bolt or nut. An opening or a sleeve hole of a clamping bolt or a nut is usually arranged at one end or both ends of the handle part, and the screw bolt or nut can be screwed when an external force is applied to the handle in the direction of rotation of the thread.

Q:What problems do sleeve wrenches use?

Caution with torque wrench:1., pay attention to waterproof, mud, sand and other debris into the wrench handle, torque wrench is strictly prohibited when the use of hammer.2. when using the wrench head to be leveled, force should be uniform, not too hard or exert impact force.3. when the torque wrench issued a "click" sound, to immediately stop the wrench, wrench force to prevent damage to the part of the 4 set to zero in the wrench is strictly prohibited to use, because in this state after no sound signal, easy to overload damage wrenchWhen the 5. wrench is not suitable for a long time, the wrench scale shall be set on the zero position so as to avoid the fatigue failure of the force measuring element.6. during the process of use, if the wrench does not sound, the signal should be stopped immediately for maintenance. After maintenance, the wrench needs to be calibrated and can be used before calibration.

Q:Where can I buy a good digital torque wrench?

Digital torque wrench torque wrench is with digital display (torque wrench, torque wrench), it is different from the general torque wrench, has powerful functions, including torque setting unit setting mode setting;; numerical; storage; numerical clearance; numerical output and network correction function, digital torque wrench, chrome vanadium steel material.

Q:What is the difference between the electric wrench and the air?

The air (pneumatic wrench) features: is driven by air pneumatic motor, with the impact of work piece, through kept tapping nut / bolt. Therefore, the noise is relatively large, and can not do the effective fixed torsion, but also will have certain harm to the bolt.

Q:How long can a torque wrench last?

Torque wrench purchase parameters reference:1 、 handle, ergonomic design, comfortable grip, greatly reducing fatigue when high intensity operation.2, double scale, can accurately set the torque value.3, to set the torque value, send out a clear sound, and can feel a slight shock on the handle.4, the locking ring close to the mouth of the net, can avoid misoperation, change the set torque value.5, wrench length: 990MM.6. Drive size 3/4 inches.7 minimum calibration interval 1.8. Application torque shall be within 40% to 90% of the torque range of the wrench.9 、 press the torque to lock the nut.

Q:Inside six angle spanner, black is good or white is good, why some have black, I prepare to buy, but don't know to buy what kind of color

Black is called black and white. It is nickel plated or chrome platedWhite relative to nickel plating is better, the coating is not easy to fall offAre surface treatment, mainly to prevent oxidation and rust

Q:What's wrong with a rechargeable wrench without strength?

High strength bolts can be divided into torshear type and the big six angle two GB, torshear type high strength bolt for M16, M20, M22, M24 four, M27, M30 non GB two GB; six angle high strength bolt for several M16, M20, M22, M24, M27, M30 etc.. General for high strength bolts fastening must first end tight and tight, and each need to have strict requirements of torque. Large six angle high-strength bolts of initial tightening and final tightening must use fixed torque wrenches. Therefore, all kinds of electric wrenches are needed for fastening.

Q:How to quickly identify the elastic direction of the screw?! And recognize the size of the wrench.

General occasions (rotating outside) are right-handed thread, left loose, right tight; but in the rotating body with general left screw (opposite to the direction of the movement, that is, the more tight), then it is right, loose, left tight.M5, M6, M8, M10, M12 commonly used specifications; then the diameter is 5mm, 6mm, 8mm, 10mm, 12mm, so you have to be more sensitive to the size of it, not often take a ruler to Practice makes perfect. gestures!

Q:How do you use the six point spanner?

Put the wrench with six edges in the inner six corners of the screw. Tighten the screws clockwise. Loosen the screws counterclockwise.