We will reply to you within 12 hours on the workday.

We are a professional transmission chain production plant and a cooperative factory for sprocket, pinion, and mechanical parts.

We mainly produce mechanical transmission roller chains, logistics conveyor chains, intelligent door and window chains, motorcycle chains, O-ring&X-ring sealed chains, agricultural machinery chains, forklift lifting chains, continuously variable transmission chains, and silent toothed chains.

Our products cover almost all fields of equipment manufacturing and machinery manufacturing, including rail transit, automobile and motorcycle transmission parts, engineering transmission machinery, silent transmission machinery, forklift lifting, agricultural machinery transmission, marine machinery transmission, petroleum machinery transmission, construction machinery transmission, power automatic closing system, electromechanical systems, hardware tools, etc.

Yes, we can produce according to the drawings and samples provided by the users.

Yes, all the items displayed on our website are standard, with corresponding international standards, domestic standards, and industry standards.

Our production capacity is 2 million meters per year.

Our factory has 115 in-service personnel, including more than 30 professional and technical personnel, and 5 engineers and technicians.

We conduct follow-Up Service from raw material to every manufacturing process, and for finished products, we will take 100% inspection depend on international standards according to customer’s requirements.

We will confirm the payment with you when quoting, like FOB, CIF, CNF or others.

In batch production, we accept 30% deposit, balance against completion or the copy of B/L. T/T is the main payment.

Usually, we ship by sea, because we are only 170 kilometers away from Shanghai Port and Ningbo Port, and the sea export is very convenient. Of course, if the customer's goods are urgent, we can also send by air, Ningbo Airport and Shanghai International Airport are very close to us.

Our products are mainly exported to dozens of countries including the United States, Germany, Japan, Brazil, Italy, the United Kingdom, South Korea, Australia, and Canada, etc.

1. Assembly Inspection

After installing the roller chain and sprocket, perform a test run inspection as shown below before operation. In addition, since conditions may change over time during operation, daily and regular inspections should be performed to ensure safe use.

· Check whether the circlips, cotter pins, etc. at the chain joint are installed correctly.
· Check that the cotter pin at the chain joint is deployed correctly.
· Check for proper tension (not too loose or too tight).
· Check if the chain is touching the chain cover.
· Check that the chain is properly lubricated.

2. Daily Inspection

· Check for abnormal vibration, noise, etc.
· Check for obstructions that may interfere with the chain and sprockets.
· Check chain components, dirt, corrosion, improper lubrication, etc.
· Check each component for scratches, deformation, damage or other abnormalities.
· Check the roller rotation, bending or clearance of various parts.
· Check the condition of the contact area with the sprocket.
· Check chain wear elongation.
· Check whether the joint, circlip or cotter pin is abnormal.
· Check the chain for rust (red rust due to poor lubrication or rust due to environmental deterioration).
· Check for carbonization or other deterioration of the lubricating oil.
· Check for sticky powder or forgings that accelerate wear.

3. Periodic Inspection

· Check paragraphs (1) and (2) above visually or using a measuring device with the machine running, stopped and with the chain removed.
· Check regularly according to usage conditions and environment. If the usage conditions are severe, the number of inspections should be increased.

4. Other

Predicting failures means taking measures to prevent accidents based on inspection results

Probable Causes：

•Overload
•Insufficient lubrication

Countermeasures：

•Proper lubrication
•Replace with new chain if the elongation exceeds the allowable limit

Probable Causes：

•Overload
•Insufficient lubrication

Countermeasures：

•Replace with new chain as soon as possible

Probable Causes：

•Excessive chain tension or looseness
•Contact with chain cover
•Loose bolts and nuts (e.g., conveyor case)
•No lubrication or improper lubrication

Countermeasures：

•Adjustment of chain tension, cannot exceed the maximum tension
•Adjustment of the chain cover
•Retightening of bolts and nuts
•Oiling according to different usage conditions

Probable Causes：

•Excessive chain slack
•Long distance between shafts
•Poor bending

Countermeasures：

•Adjustment of the chain tensioner
•Adjust axis spacing
•Lubricate the chain or replace it with a new one

Probable Causes：

•Sprocket misalignment

Countermeasures：

•Adjustment of sprocket alignment
•Replace with new chain depending on the degree of wear

Probable Causes：

•Excessive load
•Sprocket misalignment
•Insufficient lubrication
•Foreign matter intervention, poor atmosphere
•Rusting

Countermeasures：

•Change chain size
•Adjustment of alignment
•Clean the chain and lubricate it according to usage conditions

Probable Causes：

•Wear elongation
•Excessive chain slack
•Worn or deformed sprockets

Countermeasures：

•Replace with new chain
•Install tension if necessary
•Replace with new sprocket

Probable Causes：

•Long distance between shafts
•Wear elongation
•Worn or deformed sprockets

Countermeasures：

•Install idler
•Replace with new chain
•Replace with new sprocket

Probable Causes：

•The fractured part is close to the link plate position, and the fractured surface is characterized by a spherical shape with a bright surface.

•Center of pin is broken at nearly right angle

•The pin was repeatedly subjected to loads exceeding its fatigue strength. Or, under corrosive environment, the pin may break starting from the corroded part.

•Beach marks are observed on the fracture surface.

Countermeasures：

•Review the load and re-select a chain.

Probable Causes：

•Broken connecting pin (cut at the base of the flattened part)

Countermeasures：

•Discontinue the use of the connecting link.
•Review chain selection

Probable Causes：

•Fatigue failure of the plate vertically from the hole
•Occasionally also occurs from the center mark position

Countermeasures：

•Review the load of the chain
•Review chain selection

Probable Causes：

•Stress corrosion cracking of the plate, starting from the hole in the plate where the pin or bushing is press-fitted

Countermeasures：

•Protect the chain from acid and alkaline atmospheres with chain covers.
•Review chain selection

Probable Causes：

•Cracking of the rollers occurs from flaws in the indentation caused by foreign matter
•Fatigue failure

Countermeasures：

•Review rotational speed and load as well as consider lubrication appropriate to usage conditions, and chain covers for removal of foreign matter.

Probable Causes：

•The bottom of the plates are worn due to friction with the guides

Countermeasures：

•Replace with new chain if wear of more than 5% of the plate height occurs

Probable Causes：

•Static breakage of plate with overload exceeding tensile strength

Countermeasures：

•Review the load of the chain and chain selection

Probable Causes：

•Delivery status checking
•Improper oiling
•Overload operation
•Use in corrosive environment
•Collision with foreign objects or conveyed objects
•Use in high temperature situations

Countermeasures：

•Check and correct
•Clean and properly oil
•Reduce load operation
•Exchange chain or environmental protection
•Use environmental protection
•Adjust the usage environment

Probable Causes：

•Tension adjustment required

Countermeasures：

•Within one week of use, once a day
•Within one month of use, twice a week
•After one month of use, twice a month