Metric Sprockets With ISO Standards

Metric Sprocket

ISO standard
Type A B C sprockets

	Simplex	Duplex	Triplex
Type A sprocket
Type B sprocket
Type C sprocket

To understand the size or type of your metric sprocket, please know the following information about the sprocket you need.

Sprocket Specifications

• Chain wheel specification
• Chain size
• Number of teeth and/or outside diameter
• Sprocket type (A, B, C, bushing)
• Through hole length (if applicable)
• Bore diameter (if applicable)
• 衬套类型(衬套链轮)
• Number or letter on sprocket (if any)
• Materials (steel, stainless steel, others)

size and specification table of common chain wheels. The size ranges from 04B to 32B. The parameters include pitch, roller diameter, tooth number size, row spacing and chain inner width, as well as some calculation methods of chain wheels
The chain number in the table multiplied by 254/16mm is the pitch value. The suffix A of the chain number indicates the A series, which is equivalent to the A series of the international standard so606-82 forroller chainsand the American standard ANSB29175 for roller chains; Series B is equivalent to series B of S0606-82 and the British roller chain standard B522884. In China, Series A is mainly used for design and export, while Series B is mainly used for maintenance and electricity

Different teeth numbers are available for every pitch. Furthermore, in order to meet all customers’ requirements, various materials (steel C45 E UNI EN 10083-1 and stainless steel AISI 304) are available. Surface treatments such as hardened teeth(45-55 HRC) can be also carried out for a better wear resistance of the product.

How to maintain the sprocket

1. The tightness of the sprocket should be appropriate. Too tight will increase power consumption, and the bearing is easy to wear; The chain wheel is too loose and easy to jump and fall off. The tightness of the sprocket is: it is lifted or pressed from the middle of the sprocket, which is about 2% - 3% of the distance between the cores of the two sprockets.
2. The sprocket shall be installed on the shaft without swing and skew. The end faces of two sprockets in the same drive assembly shall be in the same plane. When the center distance of the sprocket is less than 0.5m, the deviation can be 1mm; When the center distance of the sprocket is more than 0.5m, the deviation can be 2mm. However, it is not allowed to have friction on the side of sprocket teeth. If the two wheels are offset too much, it is easy to cause chain release and accelerated wear. When replacing the sprocket, pay attention to check and adjust the offset.
3. When the sprocket is seriously worn, it shall be replaced with a new one at the same time to ensure good engagement. It is not allowed to replace the sprocket with a new one alone, or it will cause poor engagement and accelerate the wear of the new sprocket. The sprocket shall be turned over for use in time after it is worn to a certain extent to extend the service time.
4. The new sprocket is too long or stretched after use, which is difficult to adjust. The link can be removed according to the situation, but it should be even. The chain link should pass through the back of the sprocket, and the locking plate should be inserted outside. The opening of the locking plate should face the opposite direction of the transmission.
5. 链轮应充满润滑油in time during operation. The lubricating oil shall enter the fitting clearance between the roller and the inner sleeve to change the working conditions and reduce wear.
6. The old sprocket cannot be mixed with some new ones, otherwise it is easy to have impact in the transmission and break the sprocket.
7. When the machine is stored for a long time, the chain wheel should be removed and cleaned with kerosene or diesel oil, and then coated with engine oil or butter and stored in a dry place.

How to select the proper sprocket correctly?

1. Select the correct chain wheel model and material according to the model or model.
2. Check whether the components for installing the sprocket are If all fastening and connecting parts are intact, they can be adjusted, replaced or repaired in case of problems.
3. Install the master and slave chain wheels according to the correct method In place, all fasteners and links must be tightened. If necessary, relevant personnel can draw installation drawings for installation.
4. After installing the drive chain and adjusting the tightness, check whether the chain and sprocket fit smoothly, coplanar and have no interference with the chain guard. After installation, thedrive chainshould be reinforced. If conditions permit, the chain wheel and chain can be regularly maintained and lubricated. If they are used for a long time, lubrication and maintenance can be carried out. This can improve their service life. If they need to be more slippery, matching replacement should be carried out. If only one product is replaced separately, their wear will be aggravated. Conditional users can let the manufacturer carry out maintenance and repair