GB/T 10855-2016Inverted tooth(silent) chains and sprockets (English PDF)

3.1 Chain structure type

The tooth chain is composed of a series of tooth plate and guide plate alternately assembled and connected with a pin or a combination of articulated components, adjacent links between

Hinge section. The guide plate of the outer guide ring is crossed on both sides of the sprocket as shown in Fig. 1a). The guide plate of the inner guide ring is on the sprocket

Or a plurality of circumferential guide grooves, as shown in Figure 1b), Figure 1c). Chain guide plate to ensure the stability of the horizontal chain.

Typical chain plate structure shown in Figure 2. Allow the chain plate to be changed, but the link plate must be able to engage the sprocket as specified in this standard

The center is located on the index circle of the sprocket. As the hinge, the connection and the transition chain plate with the different manufacturers, so this standard is not standardized

Set these parts.

3.2 chain general structure

9.525mm and above the chain chain chain width to reach more than 2 times the length of the chain with the inner guide; chain width of less than 2 times the length of the chain can be

To use the external guide, can also be used within the guide; should not use the chain width of more than 16 times the length of the chain.

4.762mm pitch chain according to the provisions of Table 3 can be used outside the guide or internal guide, the maximum chain width should not be greater than 8 times the chain pitch.

3.3 Chain number

9.525mm and above Pitch chain The chain number consists of the letter SC and the number representing the chain pitch and the nominal width of the chain.

1 or the first two by 3.175mm (1/8in) for the chain pitch value, the last 2 or 3 digits multiplied by 6.35mm (1/4in) for the tooth chain

The nominal chain width. For example, SC302 represents a tooth chain with a pitch of 9.525 mm and a nominal chain width of 12.70 mm.

The 4.762mm pitch chain chain consists of the letter SC and the number representing the chain pitch and the nominal width of the chain.

The number multiplied by 1.5875mm (1/16in) for the chain pitch value, the last one or two digits multiplied by 0.79375mm (1/32in) for the tooth chain

The nominal chain width. For example, SC0309 represents a tooth chain with a pitch of 4.762 mm and a nominal chain width of 7.14 mm. 4.762mm pitch teeth

The chain plate has a nominal thickness of 0.76mm, so the width value in the chain number is the number of chain plates in the chain width direction.