Shantui 16y-18-00013 Segment bolt and gale nut block

Product Details

Specifications: For example, the bolt with model number 16Y-18-00013 may have a specification of M22×1.5×70.

Material: Generally, high-strength alloy steel and other materials are used to meet the high-strength use requirements of bulldozers under complex working conditions, with high strength, toughness and fatigue resistance.

Function: Mainly used to connect the tooth block of Shantui SD16 bulldozer with other components, so that the tooth block can be firmly fixed in the corresponding position, ensuring the normal operation of the bulldozer's walking system, drive system, etc., transmitting power and bearing various forces.

Features: The surface is treated with rust prevention, such as galvanizing, blackening, etc., to improve the corrosion resistance of the bolt and extend its service life. It has high-precision thread processing to ensure good cooperation with nuts or threaded holes and achieve reliable fastening connection.

Installation method

Preparation before installation:

Cleaning parts: Use cleaning agents and sandpaper and other tools to remove dirt, rust, oil and other impurities on the tooth block, installation site and bolt surface to ensure that the installation surface is clean and flat.

Check the parts: carefully check whether the gear block bolts have cracks, deformation, thread damage and other defects, and check whether the gear block and the matching parts are damaged, worn, etc. If there are any problems, replace them in time.

Prepare tools: prepare suitable installation tools, such as wrenches and torque wrenches of corresponding sizes.

Installation process:

Insert the bolts: carefully insert the bolts into the mounting holes of the gear block and the corresponding parts to ensure that the bolts can pass smoothly and do not damage the threads.

Install washers: install flat washers and spring washers as needed. Generally, flat washers are placed on the workpiece side and spring washers are placed above the flat washers to disperse the pressure and prevent loosening.

Preliminary tightening: Use a wrench to screw the nut into the bolt for preliminary tightening, but do not tighten it to the final torque. It can be done in a diagonal alternating manner to make the bolts evenly stressed.

Final tightening: Use a torque wrench to perform final tightening according to the specified torque value to ensure that the bolts reach the tightness required by the design. The torque values of SD16 gear block bolts of different specifications are different, and you need to refer to the relevant technical manual.

Common faults

Loose bolts:

Reason: The bulldozer vibrates greatly during operation, and long-term vibration will gradually loosen the bolts; the bolts are not tightened according to the specified torque value during installation, or the washers used are damaged or ineffective, and cannot prevent loosening.

Impact: Loose bolts will cause the tooth block to be loosely connected, affecting the normal operation of the bulldozer. In severe cases, the tooth block may fall off, causing equipment damage and safety accidents.

Broken bolts:

Reason: The tooth block is subjected to excessive impact force or alternating load during operation, which exceeds the bearing capacity of the bolt; the bolt material has defects, such as cracks and inclusions inside; excessive tightening during installation causes the bolt to bear excessive preload.

Impact: Broken bolts will cause the tooth block to lose its fixation, causing the bulldozer's walking, driving and other systems to malfunction, unable to work normally, and may even cause damage to other components.

Thread slippage:

Reason: The matching accuracy between the bolt and the nut or threaded hole is not enough, or the thread is damaged during installation; the thread surface is severely worn during use, resulting in an increase in the matching clearance.

Impact: Thread slippage will make the bolt unable to be effectively tightened, prone to loosening, and reduce the reliability of the connection. It is necessary to replace the bolt or repair the threaded hole in time.