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Timing Belt Pulley

A timing belt pulley, also called a synchronous belt pulley, is a slotted wheel used to maximize the transmission of power through machinery. It is a standard component in many automobiles, printers and manufacturing equipment.
The purpose of the timing pulley is to connect and synchronize the rotational motion of two shaft systems, such as the cam and crankshaft in an engine. This ensures that each cylinder fires on time and in sequence to provide optimum performance.

Timing Belt Pulley Catalogue

European Standard Timing Pulley

PDF Catalogue
Pilot Bore Timing Pulley

Pilot Bore Series Timing Pulleys

Taper Bush Timing Pulley

Timing Belt Pulleys for Taper Bushes

HTD Timing Belt Pulley

HTD Timing Belt Pulleys

  • HTD Taper Bore Timing Pulleys
    • HTD Timing Belt Pulleys For Taper Bushes 8M-20 & 8M-30
    • HTD Timing Belt Pulleys For Taper Bushes 8M-50 & 8M-85
    • HTD Timing Belt Pulleys For Taper Bushes 14M-40 & 14M-55
    • HTD Timing Belt Pulleys For Taper Bushes 14M-85 & 14M-115
  • HTD Timing Belt Pulleys with Pilot Bores
    • HTD Timing Belt Pulleys 3M-09 & 3M-15
    • HTD Timing Belt Pulleys 5M-09 & 5M-15
    • HTD Timing Belt Pulleys 5M-25 & 8M-20
    • HTD Timing Belt Pulleys 8M-85 & 14M-40
    • HTD Timing Belt Pulleys 14M-55 & 14M-85
    • HTD Timing Belt Pulleys 14M-115 & 14M-170
Metric Pitch Timing Pulley

Metric Pitch Timing Pulleys

Standard Toothed<br /> Bar

Standard Toothed Bar

Metric Pitch for AT Belts

Metric Pitch for AT Belts

  • Metric Pitch for AT Belts BAT5
    • BAT5(Pitch 10mm) For belt width 10mm
    • BAT5(Pitch 5mm) For belt width 16mm
    • BAT5(Pitch 5mm) For belt width 25mm
  • Metric Pitch for AT Belts BAT10
    • BAT10(Pitch 10mm) For belt width 16mm
    • BAT10(Pitch 10mm) For belt width 25mm
    • BAT10(Pitch 5mm) For belt width 32mm
    • BAT10(Pitch 10mm) For belt width 50mm

American Standard Timing Pulley

XL 1/5” Pitch Timing Pulleys L 3/8” Pitch Timing Pulleys H 1/2‘’ Pitch Timing Pulleys XH 7/8” Pitch Timing Pulleys

Toothed Bar for Timing belt

Standard Toothed Bar BAT 5 & BAT10 Standard Toothed Bar XL 1/5 & L 3/8 Toothed Bar for Timing Belt HTP 3M & HTP 5M Metric Pitch Standard Toothed Bars T2.5/T5/T10

Timing Pulley Flanges

Timing Pulley Flange

Timing Pulley Material

There are various materials that can be used for synchronous timing pulleys. Each material type offers distinct properties, and the selection should be based on engineering requirements.

Steel is one of the most popular materials for timing pulleys, due to its superior strength and durability. The material for belt timing pulley is also relatively lightweight and has a low melting point, making it an ideal option for use in environments where weight is a factor.

Aluminum is another common material option for timing belt drive pulleys, combining the metallic durability of steel with the lightness and malleability of plastic. This material is also resistant to corrosion and is commonly used in applications where the pulley will be exposed to moisture.

There are three primary engineering materials for timing belt pulleys: aluminum, steel, and plastic. The ideal material for your application will depend on the corrosive, temperature, and oil/grease conditions that you are operating in.

CNC Timing Pulley

How to Tighten Timing Belt Tensioner Pulley?

When it comes to the timing belt, one of the most important parts is the tensioner. This device keeps the belt centered and helps prevent it from slipping.

The tensioner is made up of a base, a spring, and a pulley. It is also equipped with a hydraulic damper that keeps the belt from bouncing around as it moves under various engine load changes.

Its goal is to optimize the belts for a good combination of performance and life. Its design includes a precise dimensional bearing clearance, optimized pulley design and shape, and a damping system that keeps the drive belt from jumping teeth.

A bad belt can lead to serious engine damage, so it’s vital to check yours regularly for signs that it needs to be replaced. Identifying these problems can help you make informed decisions on what to do.

Timing Belt Pulley

How to Remove Timing Belt Pulley?

Removing a timing belt pulley is a simple process, but there are a few things you need to know before you start.

First, you need to locate the top dead center (TDC) on your engine. This is where the camshafts and crankshafts line up with each other, and it is the spot where you will find the marks that will line up with each sprocket when it comes time to remove the timing belt.

Rotate the engine to TDC using a heavy ratchet with two extensions and turn it over by hand until you see the top of each piston on the crankshaft sprocket align with the mark on the corresponding cylinder head or camshaft bearing cap.

Next, turn the crankshaft a little further until all three marks on each sprocket line up with the corresponding arrow on the crank block.

With the sprockets lined up, it’s time to route the new belt around each of the pulleys and sprockets. Typically, the new belt goes around the smallest diameter pulley first then the largest.

After routing the belt around all the pulleys, release the tension on it so you can remove it. Slide the old belt out from under it with care, and make sure you’re not jiggling the cogs too much.

Depending on your tensioner, you may need to loosen it slightly with a socket wrench and breaker bar. Some tensioners have a hole in the idler pulley bolt that you can insert the drive end of the breaker bar into to pivot the tensioner away from the drive belt.

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Product categories

Timing Belt Pulley Design

A timing belt pulley is an essential component of any rotary system, providing the necessary synchronization between the shafts that drive the engine. The timing belt teeth in the pulley gear are designed to engage with the linings of the belt to provide a positive grip. This helps to prevent the shafts from slipping, allowing for smooth rotational speeds and increased torque transfer.
Timing pulleys are hampered by dust particles and debris build-up that can inhibit their functionality. In addition, a variety of chemicals can negatively impact their function in a number of ways. In these cases, choosing a urethane or rubber belt that is ozone-block resistant is recommended.

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Timing Pulley China

Timing Belt Pulley Selection

When determining the best CNC timing belt pulley for your application, product designers should consider the material and environment in which the system will operate. This will affect the design and operating characteristics of the system, as well as safety.

Selecting the Right Materials for Timing Belt Gear Pulley
One of the most common engineering materials used to fabricate timing belt pulleys is aluminum. This material offers high tensile strength and thermal stability while remaining relatively lightweight. It is commonly utilized in high-power drive systems, as well as in environments with extreme temperatures.

Steel is also widely utilized in timing pulley fabrication. This material offers high tensile strength and durability, as well as resistance to corrosion. It is typically used in heavy-duty, temperature-sensitive environments, and is available in many different sizes.

Plastics are also commonly utilized in timing belt pulley fabrication. These materials offer excellent tensile strength and thermal stability but are not as light as aluminum or steel. They also provide good chemical resistance but melt at relatively low temperatures.

A common way to calculate the timing belt pulley size for a specific application is by evaluating the motor’s input torque and output torque requirements. If the motor’s output torque requirement is greater than its input torque, then a larger-capacity pulley would be required to meet the load. The number of teeth between the smaller and larger gears is also a factor when calculating the appropriate size for the system.

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