When the chain tension of the chain hoist increases and requires maintenance, the following aspects can be considered and addressed:

1、 Check the reason

Firstly, it is necessary to determine the specific reason for the increase in chain tension. Possible reasons include:

Chain too tight: During installation or adjustment, the chain may be excessively tightened, resulting in excessive tension.

Bearing failure: Damage or excessive wear of bearings may cause additional resistance to the chain during operation, thereby increasing tension.

Component damage: Other components in the chain system, such as sprockets, drive shafts, etc., if damaged or loose, may also cause an increase in chain tension.

Insufficient lubrication: The chain needs to maintain good lubrication to reduce friction and wear. If lubrication is insufficient, the chain may generate additional resistance during operation, thereby increasing tension.

2、 Maintenance measures

Corresponding maintenance measures can be taken for different reasons:

Adjust the tightness of the chain:

Use manual tools (such as wrenches, screwdrivers, etc.) or automatic adjustment devices (if equipped) to adjust the tightness of the chain.

Ensure that the chain is neither too tight nor too loose during operation to maintain appropriate tension.

Replace or repair bearings:

If the bearings are damaged or excessively worn, they need to be replaced with new bearings in a timely manner.

It is also possible to consider cleaning and lubricating the bearings to restore their normal function.

Check and repair other components:

Carefully inspect the sprocket, drive shaft, and other components for damage or looseness.

Repair or replace damaged components to ensure the normal operation of the entire chain system.

Strengthen lubrication:

Regularly lubricate the chain to reduce friction and wear.

Use lubricating oil or grease suitable for the chain and lubricate according to the requirements in the equipment manual.

3、 Precautions

During the maintenance process, the following points should be noted:

Safety first: Before carrying out any maintenance operations, be sure to turn off the device power and disconnect all connections. Ensure that no accidental electric shock or mechanical injury accidents occur during the maintenance process.

Follow the standard operation: During the maintenance process, it is necessary to operate according to the equipment manual or relevant standards and specifications. Avoid blind operation that may cause equipment damage or safety accidents.

Use appropriate tools and equipment: Select tools and equipment suitable for maintenance tasks for operation. Ensure the quality and reliability of tools and equipment to meet maintenance requirements.

Regular maintenance and inspection: In order to avoid further increase in chain tension or other malfunctions, it is necessary to regularly maintain and inspect the chain hoist. Timely detection and resolution of problems can extend the service life of equipment and improve operational efficiency.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment