Product Description
Adjustable Pitch V-Belt Pulleys
Product Description
V-belt pulleys (also called sheaves) are used with V-belts to transfer motion from motors to belts, fans, and pumps. They have V-shaped grooves corresponding to V-shaped belts to prevent slippage and misalignment. V-belt pulleys provide maximum friction and torque in compatible V-belt drive systems. Available in single or double grooves, they offer a pitch range from 1.9 inches to 6.7 inches (A belt) and 2.4 inches to 7.0 inches (B belt). 1VP and 2VP series are finished bore variable speed sheaves made of cast iron and designated for heavier duty service up to 25 HP. Variable pitch pulleys are used with 3L, 4L, 5L, A, B, or 5v belts.
Product Parameters
|
Size |
Outside Diameter |
Pitch Diameter (4L/A) |
Pitch Diameter (3L) |
Type |
Dimension (F) |
Dimension (L) |
Dimension (P) |
Dimension (C) |
Pulley Weight |
|---|---|---|---|---|---|---|---|---|---|
| AK17 | 1.75″ | 1.50″ | 1.16″ | 1 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.2 LBS |
| AK20 | 2.00″ | 1.80″ | 1.46″ | 1 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.3 LBS |
| AK21 | 2.10″ | 1.90″ | 1.56″ | 1 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.4 LBS |
| AK22 | 2.20″ | 2.00″ | 1.66″ | 1 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.5 LBS |
| AK23 | 2.30″ | 2.10″ | 1.76″ | 1 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.5 LBS |
| AK25 | 2.50″ | 2.30″ | 1.96″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.5 LBS |
| AK26 | 2.60″ | 2.40″ | 2.06″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.5 LBS |
| AK27 | 2.70″ | 2.50″ | 2.16″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.6 LBS |
| AK28 | 2.80″ | 2.60″ | 2.26″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.7 LBS |
| AK30 | 3.05″ | 2.80″ | 2.46″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.7 LBS |
| AK32 | 3.25″ | 3.00″ | 2.66″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.7 LBS |
| AK34 | 3.45″ | 3.20″ | 2.86″ | 2 | 21/32″ | 15/16″ | 7/16″ | 5/32″ | 0.9 LBS |
| AK39 | 3.75″ | 3.50″ | 3.16″ | 2 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.4 LBS |
| AK41 | 3.95″ | 3.70″ | 3.36″ | 2 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.5 LBS |
| AK44 | 4.25″ | 4.00″ | 3.66″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.5 LBS |
| AK46 | 4.45″ | 4.20″ | 3.86″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.5 LBS |
| AK49 | 4.75″ | 4.50″ | 4.16″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.7 LBS |
| AK51 | 4.95″ | 4.70″ | 4.36″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.7 LBS |
| AK54 | 5.25″ | 5.00″ | 4.66″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.8 LBS |
| AK56 | 5.45″ | 5.20″ | 4.86″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 1.9 LBS |
| AK59 | 5.75″ | 5.50″ | 5.16″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 2.0 LBS |
| AK61 | 5.95″ | 5.70″ | 5.36″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 2.1 LBS |
| AK64 | 6.25″ | 6.00″ | 5.66″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 2.2 LBS |
| AK66 | 6.45″ | 6.20″ | 5.86″ | 3 | 3/4″ | 1-5/32″ | 15/32″ | 1/16″ | 2.3 LBS |
| AK69 | 6.75″ | 6.50″ | 6.16″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 3.5 LBS |
| AK71 | 6.95″ | 6.70″ | 6.36″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 3.8 LBS |
| AK74 | 7.25″ | 7.00″ | 6.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 3.4 LBS |
| AK79 | 7.75″ | 7.50″ | 7.16″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 4.0 LBS |
| AK84 | 8.25″ | 8.00″ | 7.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 3.8 LBS |
| AK89 | 8.75″ | 8.50″ | 8.16″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 4.3 LBS |
| AK94 | 9.25″ | 9.00″ | 8.68″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 4.5 LBS |
| AK99 | 9.75″ | 9.50″ | 9.16″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 5.3 LBS |
| AK104 | 10.25″ | 10.00″ | 9.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 5.1 LBS |
| AK109 | 10.75″ | 10.50″ | 10.16″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 5.8 LBS |
| AK114 | 11.25″ | 11.00″ | 10.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 5.6 LBS |
| AK124 | 12.25″ | 12.00″ | 11.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 6.5 LBS |
| AK134 | 13.25″ | 13.00″ | 12.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 7.5 LBS |
| AK144 | 14.25″ | 14.00″ | 13.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 8.5 LBS |
| AK154 | 15.25″ | 15.00″ | 14.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 9.8 LBS |
| AK184 | 18.25″ | 18.00″ | 17.66″ | 3 | 3/4″ | 1-15/32″ | 23/32″ | — | 12.1 LBS |
Installation and Removal of Pulleys
Install
1. Check the pulley groove to make sure there are no scratches or sharp edges and all dimensions are up to standard;
2. Clean the surfaces of all parts, such as hub holes, taper sleeves, bolt holes, etc. Fit the cone sleeve into the pulley, aligning all the screw holes.
3. Apply oil to the screw (TB 1008-TB 3030) and thread (TB 3525-TB 5050) and screw them into the mounting holes, but do not tighten them yet.
4. Clean the surface of the drive shaft, push the pulley with the tapered sleeve installed to the predetermined position on the shaft, and check whether the V-belt pulley is aligned.
5. When using the keyway, it must be inserted into the hub first, and there must be a certain tolerance between the keyway and the hole hub.
6. Using a hexagonal wrench conforming to the DIN911 standard, alternately, gradually, and evenly tighten the bolts in each mounting hole until the torque shown in the table below is reached.
7. After a short period of operation (0.5 to 1 hour), check the tightening torque of the bolts and retighten them if necessary.
8. To prevent the intrusion of foreign matter, fill the hole’s connection hole with grease.
Disassemble
1. Loosen all the bolts, take out 1 or 2 of the bolts according to the number of disassembly holes, lubricate the bolt pattern and the tip of the bolt with oil, and insert the bolt into the disassembly hole.
2. Tighten the bolts alternately until the taper sleeve and pulley are loosened.
3. Remove the taper sleeve and pulley from the shaft.
Technological Processing
Company Profile
HZPT is a professional manufacturer of mechanical parts. Our main products are belt pulleys, sprockets, taper sleeves, coupling, and other transmission parts. Its products are mainly exported to Germany, Britain, France, and other European countries, with an annual export value of 18 million US dollars, accounting for more than 65% of the total output. The annual output value reached 200 million yuan.
Our products all adopt international, European, and American advanced industrial standards, use precise and good processing equipment, develop reasonable production technology, apply efficient and flexible management systems, and improve the quality management system to ensure that the product quality is good and the price is affordable.
Our factory adheres to the enterprise concept of “quality: the basis of enterprise survival, integrity: the basis of enterprise development, service: the source of enterprise development, low price: the instrument of enterprise development.” We are always looking CHINAMFG to the presence of customers at home and abroad, seeking CHINAMFG benefits and joint cause development.
Warehouse Stock
The warehouse covers an area of 5000 square CHINAMFG and can provide all kinds of standard models A/B/C/Z, with complete quantity and large quantity in stock. Meanwhile, it accepts all sorts of non-standard customization for drawing production. The daily production capacity is 10 tons, and the delivery time is short.
Packaging & Shipping
Experienced Workers Packing Pulleys Carefully, safe wooden cases keep parts from being injured or damaged during sea or air shipment.
| Certification: | CE, ISO |
|---|---|
| Pulley Sizes: | Type F |
| Manufacturing Process: | Forging |
| Material: | Carbon Steel |
| Surface Treatment: | Baking Paint |
| Application: | Chemical Industry, Grain Transport, Mining Transport, Power Plant |
| Samples: |
US$ 9999/Piece
1 Piece(Min.Order) | |
|---|
How are sheave pulleys used in the operation of cranes and hoists?
In the operation of cranes and hoists, sheave pulleys play a crucial role in facilitating the lifting and movement of heavy loads. Here is a detailed explanation of how sheave pulleys are used in the operation of cranes and hoists:
1. Lifting Mechanism Design: The lifting mechanism of cranes and hoists is designed to meet the specific requirements of the lifting operation. This includes determining the load capacity, lifting height, and application type.
2. Wire Rope Selection: An appropriate wire rope or cable is selected based on factors such as load capacity, durability, flexibility, and resistance to wear or corrosion. The wire rope is chosen to withstand the expected load and provide the necessary strength and stability.
3. Sheave Pulley Configuration: Sheave pulleys are incorporated into the lifting mechanism to guide and support the wire rope. The pulleys are typically mounted on a framework or structure, allowing them to rotate freely.
4. Multiple Pulley Systems: Cranes and hoists often utilize multiple sheave pulleys in different configurations to achieve mechanical advantage and increase lifting capacity. These configurations can include single sheave, double sheave, and multiple sheave arrangements.
5. Wire Rope Routing: The wire rope is threaded through the grooves of the sheave pulleys, creating a continuous loop. The pulleys guide the wire rope along the intended path, ensuring proper alignment and minimizing friction.
6. Drive Mechanism: A drive mechanism, such as an electric motor or hydraulic system, provides the power necessary to rotate the sheave pulleys. As the pulleys rotate, the wire rope moves, resulting in the lifting or lowering of the load.
7. Lifting and Lowering: When the crane or hoist is operated, the rotation of the sheave pulleys causes the wire rope to wind or unwind, lifting or lowering the load accordingly. The mechanical advantage provided by the multiple pulley systems allows for efficient lifting and precise load control.
8. Load Control and Safety: Cranes and hoists incorporate various load control and safety mechanisms to ensure safe lifting operations. These mechanisms, such as brakes and limit switches, work in conjunction with the sheave pulleys and other components to prevent overloading, uncontrolled descent, or other hazardous situations.
Regular maintenance and inspection of the sheave pulleys, wire rope, and other lifting components are essential to ensure the continued safe and reliable operation of cranes and hoists. This includes lubrication of the pulleys, checking for signs of wear or damage, and making necessary adjustments or replacements to maintain optimal functionality.
Can sheave pulleys withstand harsh environmental conditions?
Yes, sheave pulleys can be designed and manufactured to withstand a variety of harsh environmental conditions. Here is a detailed explanation of their ability to withstand such conditions:
1. Corrosion Resistance: Sheave pulleys can be made from materials that offer excellent corrosion resistance, such as stainless steel or corrosion-resistant coatings. These materials are specifically chosen to withstand exposure to moisture, humidity, or corrosive substances, making them suitable for harsh environments such as marine or industrial settings where corrosion is a concern.
2. Temperature Extremes: Sheave pulleys can be designed to withstand a wide range of temperature extremes. Specialized materials, coatings, or heat-resistant treatments can be utilized to ensure the pulleys maintain their structural integrity and functionality in high-temperature environments, such as foundries or industrial ovens. Similarly, pulleys can be designed to withstand extremely low temperatures encountered in cold storage facilities or outdoor applications.
3. Chemical Resistance: In environments where exposure to chemicals or abrasive substances is common, sheave pulleys can be customized with materials or coatings that offer high chemical resistance. This ensures that the pulleys can withstand contact with chemicals, solvents, oils, or abrasive particles without deteriorating or suffering from chemical reactions that could compromise their performance.
4. Mechanical Durability: Sheave pulleys can be engineered to withstand heavy loads, shocks, or vibrations that may be present in harsh environments. By using robust materials, precision engineering, and appropriate manufacturing techniques, the pulleys can maintain their structural integrity and resist mechanical stresses, ensuring reliable performance and longevity in demanding conditions.
5. Sealing and Protection: To enhance their ability to withstand harsh environments, sheave pulleys can be equipped with sealing mechanisms and protective features. These may include sealed bearings or bearing enclosures to prevent contamination from dust, dirt, or water ingress. Additionally, pulleys can be designed with protective covers or shields to safeguard the internal components from external elements, increasing their durability and resistance to harsh conditions.
6. UV Resistance: In outdoor applications where exposure to sunlight and ultraviolet (UV) radiation is prevalent, sheave pulleys can be manufactured with UV-resistant materials or coatings. UV resistance prevents degradation, discoloration, or loss of mechanical properties due to prolonged sun exposure, ensuring the pulleys remain functional and reliable over an extended period.
7. IP Ratings: Sheave pulleys can be designed to meet specific Ingress Protection (IP) ratings. IP ratings indicate the level of protection provided against the intrusion of solid particles (dust) and liquids (water or other liquids). By choosing pulleys with suitable IP ratings, they can be effectively protected against harsh environmental conditions, ensuring their performance and longevity.
It is important to note that the ability of sheave pulleys to withstand harsh environmental conditions may vary depending on the specific design, materials used, and the severity of the conditions. Manufacturers can provide guidance on the suitable customization options and specifications required to ensure optimal performance and longevity in specific harsh environments.
How do sheave pulleys contribute to effective weightlifting and material handling?
Sheave pulleys play a crucial role in facilitating effective weightlifting and material handling operations. Here is a detailed explanation of how sheave pulleys contribute to these processes:
1. Mechanical Advantage: Sheave pulleys provide a mechanical advantage by utilizing the principle of leverage. When a rope or cable is threaded through the grooves of a sheave pulley, it creates a system of multiple ropes or cables. This arrangement allows for the distribution of the load over several strands, reducing the amount of force required to lift the weight. The mechanical advantage provided by sheave pulleys enables individuals to lift heavier loads with less effort, making weightlifting and material handling more efficient.
2. Directional Change: Sheave pulleys allow for changes in the direction of force applied to the lifting or moving object. By redirecting the path of the rope or cable, sheave pulleys enable weightlifting and material handling in various directions, including vertical, horizontal, or angled movements. This versatility in directional change is particularly useful in situations where objects need to be lifted, lowered, or moved in different orientations, enhancing the flexibility and adaptability of weightlifting and material handling processes.
3. Load Distribution: Sheave pulleys distribute the load evenly across multiple strands of rope or cable. This load distribution minimizes stress on individual strands, reducing the risk of rope or cable failure. By spreading the load, sheave pulleys enhance the safety and reliability of weightlifting and material handling operations. Additionally, load distribution helps prevent damage to the lifted or moved objects, ensuring their integrity during the process.
4. Controlled Speed: Sheave pulleys enable controlled speed during weightlifting and material handling. By adjusting the diameter and configuration of the sheave pulleys, the speed at which the rope or cable moves can be regulated. This control over speed is crucial for precise and safe lifting or movement of heavy objects. It allows operators to maintain proper control and prevent sudden or erratic movements, reducing the risk of accidents or damage to the load.
5. Efficient Power Transmission: Sheave pulleys facilitate efficient power transmission in weightlifting and material handling systems. By utilizing grooves that match the profile of the ropes or cables, sheave pulleys maximize the contact area and grip between the pulley and the lifting medium. This efficient power transmission minimizes slippage and loss of energy, ensuring that the applied force is effectively transferred to the load. As a result, weightlifting and material handling processes become more efficient and require less input power.
6. Scalability: Sheave pulleys offer scalability in weightlifting and material handling systems. Multiple sheave pulleys can be incorporated into a system to create complex arrangements, such as block and tackle configurations. These configurations allow for further mechanical advantage and increased lifting capacity. By adding additional sheave pulleys or combining them in different ways, weightlifting and material handling systems can be customized to meet specific load requirements, making them highly adaptable to different applications.
Overall, sheave pulleys significantly contribute to effective weightlifting and material handling by providing a mechanical advantage, allowing for directional changes, distributing the load evenly, enabling controlled speed, facilitating efficient power transmission, and offering scalability. These features enhance the efficiency, safety, and versatility of weightlifting and material handling operations in various industries and applications.
editor by CX
2023-11-16
