• China 20x57 size track bolt
  • China 20x57 size track bolt
  • China 20x57 size track bolt

20x57 Size Track Bolt For Excavator Track Shoe Parts

Brand :F-Times,AFA,UTD

Product origin :Quanzhou Fujian China

Delivery time :30 days

Supply capacity :20000pcs

40Cr heat treatment+intermediate frequency processingto ensure the hardness and tension of the bolt.
A wide range of track shoe bolts, track roller bolts, sprocket bolts etc., to meets the needs of most chassis armor and bucket parts.

Product Information

China 20x57 size track bolt

Brand Name F-Times,AFA,UTD
Products TypeTrack Shoes Bolt
Place of ProductionQuanzhou Fujian China
Excavator, Bulldozer, ect
Forging Casting/Smooth Finish
FeatureDurable, Strong
Material45#,40Cr, 20CrMnTi
Color Commonly use color, Customized
MOQ 10pcs
Shipment FOB


Product Information

Track Bolt Maintenance Precautions


First. Pollution during rinsing


The track bolts need to be cleaned with silicate cleaner after quenching, and then rinsed, so be very careful when rinsing to prevent residues.


Second, Track bolts are stacked unreasonably


The track bolts will show signs of discoloration after tempering, and there may be oily residue after soaking in ether, indicating that the surface of the track bolts is not clean. The analysis showed that the track bolts were piled unreasonably when heated, resulting in a slight oxidation of the track bolts in the quenching oil.


Third, surface residue


There are white residues on the high-strength screws, which are analyzed by instruments and confirmed to be phosphides. This reaction occurred because the acid washer was not cleaned and the rinsing tank was not thoroughly checked.


Fourth, alkali burns


High-strength screw quenching waste heat blackening has a uniform, flat oil black outer surface. Tested to be caused by alkali burns. Therefore, the steel track bolts in the quenching oil can not remove the surface alkaline substances, so that the surface burns at high temperatures, and aggravate the injury during tempering. It is recommended that the track bolts be thoroughly washed and rinsed before heat treatment to completely remove alkaline residues that cause burns to fasteners.


Fifth. Improper rinsing


For large size track bolts, polymer aqueous solutions are often used for quenching. Before quenching, they are washed and rinsed with an alkaline cleaner. After quenching, the fasteners have rusted on the inside. Therefore, the rinsing water should be exchanged frequently to ensure that the track bolts will not rust during rinsing.


Sixth. Excessive corrosion


High-strength track bolts often see some black streaks. This black streak is a contamination of the surface residue. It is a dried quenching oil. It is the evolution of gaseous materials during the quenching process. Because the quenching oil is too old, it is recommended to add new oil.



 China 20x57 size track bolt




Product Process

               China 20x57 size track bolt

China 20x57 size track bolt


China 20x57 size track bolt

China 20x57 size track bolt

China 20x57 size track bolt


China 20x57 size track bolt


Q1: How to ensure the goods is available for my machine?

A1: We have the service information system which can check the machine parts 

information precisely. You can measure the parameter and then we will find that.

Q2: How do you guarantee your good's quality?

A2: First, we have severe quality-control system and ISO certification. Second,

we will sign up the parts warranty policy with you.  And last, you can visit our

factory or ask some quality-test organization to check that.

Q3: What's your advantages which is different from others?

A3: The company advantages : we have a very complete service system. 

The product advantage:the company pays attention to the product quality, 

the use value which pays attention to the customer, provides the high quality 

product with the outstanding cost performance for the domestic and foreign customer.

Q4: What's your delivery time?

A4: It depends on your order quantity. If the products you need are in stock, 

we would arrange dispatch within 7 days after you pay. If not, the delivery time

can be negotiated.


China 20x57 size track bolt

China 20x57 size track bolt

Get the latest price? We'll respond as soon as possible(within 12 hours)
close left right