What is a timing belt pulley?
A timing belt pulley is a specialized pulley system with teeth or pockets along the outside of the pulley body’s diameter. The teeth or pockets on the outside of the pulley are not used for power transmission. Rather, they engage the pulley belt, assisting with timing and averting misalignment.
Is a timing belt more like a belt and pulley?
Is a timing belt more like a belt and pulley system or a sprocket and chain system? A timing belt is more like a sprocket and chain system because they have teeth that engage with notches in the pulleys on the crank and camshaft.
When should a timing belt be replaced on a pulley?
In almost all cases, the timing belt tensioner should be replaced at the same time as the timing belt which is generally between 75,000 and 100,000 miles.
How do you check a timing belt on a pulley?
To quickly calculate the Outside Diameter (O.D.) in inches of any 8mm pitch timing belt pulley divide the number of teeth on the pulley by ten (10). For example an 80 tooth pulley would have an 8” Outside Diameter (O.D.) (80 teeth / 10) or a 33 tooth pulley would have a 3.3” Outside Diameter (O.D.) (33 teeth / 10).
What are timing pulleys?
Timing pulleys have teeth or pockets around the outside diameter of the pulley body. Timing teeth engage holes in the metal belt, while timing pockets engage drive lugs on a belt’s inner circumference. As the name implies, these teeth or pockets are used for timing.
What is a timing pulley used for?
Timing pulleys are used in power transmission systems where maintenance of speed ratio is an important design consideration. These synchronous belt drive systems are durable, highly efficient, and suitable for many different applications.
Why might you choose to use a belt and pulley system instead of a chain and sprocket system?
Depending on how pulleys and sprockets are applied, speed, direction, and torque can be modified within the system. Typically, belts and pulleys are easier to manufacture, lighter weight, and less expensive to purchase than sprockets and chains.
How do I know what size timing belt to get?
What is the Timing Belt Length? Timing Belt Length = Number of Teeth! Do not measure the length of the belt with a cord, this is inaccurate! The surest method is to count the teeth.
What is a timing belt do?
The timing belt is there to make sure that the movement of the camshaft or camshafts is synchronized with the movement of the crankshaft.
What is the pitch of a timing belt?
By definition, pitch is the distance from one tooth center to the adjacent tooth center. Pitch choices for metric pitch timing belts include: T pitch, a metric trapezoidal pitch available in four pitch sizes: 2.5 mm, 5 mm, 10 mm, and 20 mm.
What is a synchronous pulley?
Synchronous pulleys are also known as timing pulleys because they often work with timing belts in motors. In principle, pulleys operate by translating rotational force of a motor or engine into a linear pulling force. They come in many shapes and sizes for various loads and speeds.
What is a toothed pulley?
A toothed pulley is the type of pulley used with a cog belt. Looking much like any pulley with teeth or cogs machined into the outside perimeter in place of the more common deep V associated with a common V type fan belt, the toothed pulley relies on the teeth to provide adequate drive power instead…