Taper Lock Pulley

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What Is Taper Lock Pulley?

A tapered lock pulley is a type of pulley that allows two pulleys to be connected on a shaft. This is used in various applications such as motor and fan rotors. These pulleys usually have half-threaded holes so they are easier to install.

Taper lock pulleys are often used in complex systems. These pulleys allow the user to easily disconnect and reconnect the pulleys. The system is also easy to remove and helps control the speed of the mechanism.

Taper lock pulleys can be drilled or undrilled and come in many different styles. Typically, these pulleys are made of gray cast iron and have a tapered sleeve inside. They also come in different sizes including small, medium and large. Choosing the correct type is important as it affects torque transfer.

When installing the pulley, it is important to align the screw holes with the center of the pulley. Depending on the diameter of the pulley, there may be five or three screws. Once all the screws are in place, you can start the motor. It is recommended to run the motor at low speed for a few minutes to ensure it is working properly.

Taper Lock Pulley Installation

Hang the pulley on the shaft. Check that the smaller diameter of the taper is towards the motor or pillow block. Now insert the tapered bush onto the shaft. Align the keyway slots (if using one) and slip the pulley, aligning its three half-holes with those in the tapered bush. Insert the two grub screws in the holes located at each side of the slit. Tighten both evenly so the pulley will sit straight on the tapered bush.

How to Remove a Taper Lock Pulley

Loosen and completely remove both mounting screws. Insert one of these screws in the hole opposite the split. Tighten this screw in and the pulley will be pushed out from the tapered bush. The pulley and tapered bush are separated and both may now be removed from the shaft.

What is a Taper Lock

Tapered lock bushings are the components that provide the locking mechanism for power transmissions. This helps control the speed of the mechanism and ensures that the driven equipment remains on the shaft. These bushings are commonly used on pulleys and fan rotors.
Taper lock bushings are machined from precision cast iron. They come in various sizes and grades. Some designs have etched tapers for easy identification.
The tapered lock bushing is designed to reduce the length of the through hole and provide a tight flush fit with the sprocket. They are ideal for high torque applications.

How Does a Taper Lock Pulley Work?

A taper lock pulley is a type of pulley that uses a tapered locking mechanism to keep the belt in place. This type of pulley is typically used in industrial applications where a high level of precision and reliability is required. The keyless taper lock mechanism ensures that the belt is securely attached to the pulley and will not slip off.

How Does a Taper Lock Work?

The taper locking system is a common and common mechanical power transmission mechanism. It consists of a set of bushes mounted on a shaft. These bushings are designed to fit shafts of all sizes. In addition to being flexible, they also offer a slim fit. They also offer a premium finish.
Bushings are machined to exact tolerances and computer etched for dimension identification. Depending on the specific application, they are available in custom varieties.
Taper-Lock bushings provide a true pinch fit for the sprocket. The bushing is held in place by a blind hex socket cap screw that compresses the inner diameter of the bushing. This allows the tapered lock bushing to taper and reduce the through hole length dimension.
Taper-Lock bushings are also available for parallel bore components. In addition to providing a tight fit, they also help keep the sprocket hub narrow.

Types of Taper Lock Pulleys

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SPA Taper Lock Pulleys Used with A or SPA / XPA Section Belts

SPA Pulleys are used with A or SPA / XPA Section Belts. This section has single to six groove taper lock pulleys. The pulleys are mounted to the shafts using the taper bushes. The taper bush not only secures the pulley on the shaft with a keyway but also fixes it against axial displacement.

SPZ Taper Lock Pulleys Used with Z or SPZ / XPZ Section Belts

SPZ taper lock v-belt pulleys for taper bushes are the primary type of V-belt pulleys. The keyless taper lock pulley consists of a hub with a tapered locking groove around the outside. The belt is placed around the hub and the locking groove, and a locking pin is inserted through the groove and belt to hold them together.

SPB Taper Lock Pulleys Used with B or SPB / XPB Section Belts

SPB Pulleys are used with B or SPB / XPB Section Belts. This section has a single groove to ten groove taper lock pulley. SPB taper lock pulleys are typically used in compressors, blowers, machine tools, paper and chemical industries, and many other machines.

SPC Taper Lock Pulleys Used with C or SPC / XPC Section Belts

SPC Pulleys are used with C or SPC / XPC Section Belts. This section has three grooves to ten groove taper lock pulleys. European standard pulleys include SPZ, SPA, SPB, and SPC V-belt pulleys. It is widely used in various power transmissions, such as petroleum, metallurgy, chemical, textile, lifting, and other industrial equipment.

High-Quality Cast Iron Heavy Duty Customized Size Taper Lock Pulley

Taper lock pulleys are designed to transmit power or motion between two shafts. The shafts are held in place by a locking mechanism that secures them in the pulley. This locking mechanism prevents the shafts from slipping or rotating in the pulley. Taper lock pulleys are available in a variety of sizes and styles.

Professional Manufacture Low Price Guaranteed Quality Taper Lock Pulleys for Industry

Our taper lock pulleys are made from the highest quality materials. We offer a variety of pulley sizes and styles to meet your specific needs. The standard size range includes SPA Pulley, SPB Pulley, SPZ Pulley, and SPC Pulley. You can buy standard Taper lock Pulleys or send us the design and drawing for the custom variables.

All Categories

  • Taper Lock Pulleys
  • SPA Taper Lock Pulleys
  • SPB Taper Lock Pulleys
  • SPC Taper Lock Pulleys
  • SPZ Taper Lock Pulleys
  • Heavy Duty Taper Lock Pulleys
  • Customized Taper Lock Pulley
  • V Belt Pulleys
  • AK/AKH Series Pulley
  • BK/BKH Series Pulley
  • Adjustable Pitch V-Belt Pulleys
  • Large Cast Iron V Belt Pulley
  • B/C/D Series Pulley
  • 3V/5V/8V Series Pulley
  • Timing Belt Pulleys
  • Timing Belt Pulley MXL Type
  • Timing Belt Pulley H Type
  • Timing Belt Pulley S3M Type
  • Timing Belt Pulley S8M Type
  • Timing Belt Pulley HTD5M Type
  • Timing Belt Pulley HTD8M Type
  • Sprockets
  • Double Pitch Sprockets
  • Stainless Steel Sprockets
  • Plastic Sprockets
  • Plate Wheel Sprockets
  • Bushed / Taper Lock Sprockets
  • Idler Sprockets

Advantages of Taper Lock Pulley

“When the transmission part runs for a long time, the inner hole and the chain groove may be damaged. If it is a transmission part using this kind of tapered sleeve, when this happens, replace the tapered sleeve with the exact specification, and it can be used again.”

Good Interchangeability

“High versatility: The separation of the pulley and the tapered sleeve makes the change of the shaft hole only need to change the diameter of the tapered sleeve, which increases the versatility of the product and significantly reduces the inventory type and cost of the product.”

High Versatility

“The taper lock pulley is a new type of pulley, which is widely used in European and American countries. It consists of two parts. A tapered bush is connected between the pulley and the installation shaft, and then it is locked with an Allen wrench to fix the screw and it can be used.”

Easy installation and disassembly

Textile Mill

Pump & Compressor

Paper Mill

Food Machinery

Looking at the Pulley from the Perspective of Application Advantages and Disadvantages

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About Taper Lock Pulley FAQ

What precautions should be taken when assembling the taper lock pulley?

There are many application advantages of the taper lock pulley. The 8-degree outer tapered surface is tightly connected with the inner tapered surface of the pulley, which can significantly improve the centering accuracy of the transmission parts. Moreover, its versatility and interchangeability are excellent and can be applied to various occasions. Even if the inner hole and the chain groove are damaged during long-term operation, they can be restored only by replacing the taper sleeve to the exact specification, reducing the follow-up maintenance cost.

Matters needing attention in the assembly of the taper lock pulley:

(1) Gasoline must be used for the first cleaning before and after the taper lock assembly to ensure that the parts are clean and dry to ensure that the mating surfaces are tightly fitted without oil stains and have sufficient friction.

(2) It should be washed with gasoline and dried before assembling with hexagon socket head bolts. Do not apply lubricating oil or grease in the bolts or screw holes to ensure sufficient friction and self-locking ability after the bolts are tightened.

(3) When the three hexagon socket bolts are about to be installed, they need to be tightened to ensure that the tapered sleeve is subjected to uniform axial force and that the pulley and the tapered sleeve are well positioned coaxially.

(4) Before installation, check and measure the length of the hexagon socket head bolts for assembly to ensure that the assembly bolts can withstand the bottom end of the blind hole of the taper sleeve after tightening to ensure that the tapered surface fits tightly, and to ensure that the bolts are subjected to the reverse thrust of the bottom end of the blind hole, resulting in double The same anti-loosening effect as the nut principle.

(5) After the taper lock pulley is tightened, check and adjust the relative position of the primary and driven pulleys by pulling the wire to ensure that the two pulleys are on the same plane and the belt tension is moderate.

(6) The pulley cover should be intact and installed firmly to ensure that the belt is broken or the pulley is loosened and withdrawn during operation, resulting in a significant safety accident.

(7) After many years of long-term operation of mechanical equipment, it is necessary to check the inner hole and chain groove condition regularly, there may be damage, and spare parts should be replaced in time if defects are found.

Why do taper lock pulley need surface treatment?

The pulley belongs to the hub-type parts. The material is generally cast iron. The manufacturing process is usually based on casting and forging. Therefore, the pulley products without surface treatment are prone to burrs on the surface and hurt the hands—Rust phenomenon.

Currently, the commonly used surface treatment of pulleys is phosphating and blackening. The technological process is degreasing and rust removal – water cleaning – surface conditioning – phosphating – water cleaning – chromate treatment – drying – grease or dyeing treatment:

Mainly iron-based phosphating. The early application of the phosphating process is rust prevention. The steel parts are phosphated to form a phosphating film, which plays a role in rust prevention. The workpiece treated with solid alkali or strong acid will cause the phosphating film to coarsen, and the grains can be refined by surface adjustment and activation. The anti-rust period of workpieces after phosphating and anti-rusting treatment can reach several months or even several years (for oiled workpieces) and is widely used for anti-rust, anti-rust, and phosphating in the process, transportation, packaging, storage, and use.

After the pulley is phosphated and blackened, the pulley has a better all-black appearance. The important thing is that it is not easy to rust after the pulley is phosphated and blackened. The pulley’s service life is significantly prolonged, which can effectively help customers reduce costs.