Sprocket 05B-2 z=25 with hub, C45 steel

Product Description

Sprocket 05B-2 z=25 with hub, C45 steel fits 05B-2 roller chain (European standard DIN 8187 / ISO 606), double-strand (duplex), with a pitch of 8 mm. It has 25 teeth and is made of C45 steel.

The sprocket has a one-sided hub with a diameter of 40 mm and a pilot bore of Ø10 mm, which is bored to the shaft size and completed with a keyway or a set screw hole. The total width of the sprocket is 20 mm.

Technical data

Applications

It is found in textile machinery, gate and roller shutter drives and workshop equipment. The double-strand version carries higher loads than a single-strand one of the same pitch.

Frequently asked questions

Which chain does the 05B-2 z=25 sprocket fit?

05B-2 roller chain to European standard DIN 8187 / ISO 606, with a pitch of 8 mm. A duplex sprocket requires a double-strand (duplex) chain.

When are multi-strand sprockets used?

Double- and triple-strand sprockets work with multi-strand chains in heavily loaded drives where there is no room for a chain with a larger pitch. Several strands share the load evenly, which reduces wear and the risk of chain breakage.

How do I check the pitch of a sprocket?

The sprocket pitch matches the chain pitch - it is the distance between the centres of adjacent teeth measured on the pitch circle. The easiest way to check it is to place a section of matching chain on the sprocket: it should sit on the teeth without tension. This sprocket has a pitch of 8 mm.

How is the pitch diameter of a sprocket calculated?

The pitch diameter Dp is the circle along which the chain rollers travel. It is calculated with the formula: pitch divided by the sine of (180° / number of teeth). For this sprocket it is 63.83 mm, and the outside diameter De is 67.5 mm.

When should I choose a sprocket with hub and when a plate wheel?

A sprocket with hub is chosen when it transmits torque directly from the shaft via a key - the hub provides a longer contact surface with the shaft and a more stable fit. Plate wheels are used mainly when the wheel is fixed to an existing flange or drum, or when there is little space on the shaft.

What does the lead time depend on?

When ordering, please check the current stock level of this sprocket - the lead time depends on it and is clearly stated according to the quantity available in each warehouse. The stock level is shown above the product price and may vary depending on the warehouse.

Product photos are for illustration purposes only.