China wholesaler High Quality Spc 335 mm 8groove V-Belt Pulley for Taper Bush 4040 Interchange for Chiaravalli and Vke pulley design

Product Description

High quality SPC 8Groove 335mm  v belt pulley for  4040 Taper Bush 

We are a leading manafacturer of V Belt Pulley in China and ISO 9001 certificated.

V Belt Pulleys or “Vee Belt Pulleys” are specially constructed for V Belt and V Pulley systems using various section belts. These belts are used in several applications such as automobiles, wood working machines, etc. When used together with V Belts, they can guarantee top drive performances as well as high ratio and torque drives.

MIGHTY supply V Belts available with various sections, lengths, and materials. Our V Pulley range is available in A, B, C and Z belt sections, as well as in Taperlock or Pilot Bore fitment. We offer several V Belts with a wide range of diameters (50mm to 800mm), CHINAMFG or “grooves” (1 – 8), pitch diameters and forms.

If you are interested in finding our more about our industrial products, visit our products page, especially if you are in need of V Belt Pulleys and Timing pulleys. If you have any further queries or if you would like to know more about our Special Offers, contact us and we will be glad to help.

Can’t find what you’re looking for? – Contact us.

Europe Standard: SPZ, SPA, SPB, SPC V Belt Pulley 
Bore: : Taper bore pulley, Polit Bore pulley
Material: Cast Iron GG25
Surface treatment: Phosphating finished
Lettering:  Laser typing 

Lead Time

Quantity(Pieces) 1 – 50 51 – 100 101 – 500 >500
Est. Time(days) 15 30 50 To be negotiated

Each pulley is strictly static balanced with high precision machining tools. Unbalanced volume will corrected accurated.

Company Information

MIGHTY, a brand belongs to SCMC Corp. which is a wholly state-owned enterprise established in 1980, is specialized in producing precision mechanical power transmission products. After years of hard work, Mighty has already got the certificate of ISO9001:2000 and become a holding company of 3 manufacturing factories.

Mighty’s products are mainly exported to Europe, America and Middle East market. With the top-ranking management, professional technical support and abundant export experience, Mighty has established lasting and stable business partnership with many world famous companies and has got good reputation from CHINAMFG customers in international sales.

Equipment: sawing machine, CNC Lathe, drilling machine, hobbing machine, punch machine, milling machine, gear shaper, grinding machine, machining center, etc.

Trade Show: PTC Asia, Canton Fair, Hannover Messe, IFPE


Main Products:

Timing belt pulleys, timing bars, timing belt clamping plates.

Locking elements and shrink discs: could be alternative for Ringfeder, Sati, Chiaravalli, BEA, KBK, Tollok, etc.

V belt pulleys and taper lock bush.

Sprockets, idler, and plate wheels.

Gears and racks: spur gear, helical gear, bevel gear, worm gear, gear rack.

Shaft couplings: miniature coupling, curved tooth coupling, chain coupling, HRC coupling, normex coupling, FCL coupling, GE coupling, rigid and flexible coupling, jaw coupling, disc coupling, multi-beam coupling, universal joint, torque limiter, shaft collars.

Forging, Casting, Stamping Parts.
Other customized power transmission products and Machining Parts (OEM).





1. Engineering: machine tools, foundry equipments, conveyors, compressors, painting systems, etc.

2. Pharmaceuticals& Food Processing: pulp mill blowers, conveyor in warehouse, agitators, grain, boiler, bakery machine, labeling machine, robots, etc.

3. Agriculture Industries: cultivator, rice winnower tractor, harvester, rice planter, farm equipment, etc.

4. Texitile Mills: looms, spinning, wrappers, high-speed auto looms, processing machine, twister, carding machine, ruler calendar machine, high speed winder, etc.

5. Printing Machinery: newspaper press, rotary machine, screen printer machine, linotype machine offset printer, etc.

6. Paper Industries: chipper roll grinder, cut off saw, edgers, flotation cell and chips saws, etc.

7. Building Construction Machinery: buffers, elevator floor polisher mixing machine, vibrator, hoists, crusher, etc.

8. Office Equipments: typewriter, plotters, camera, money drive, money sorting machine, data storage equipment, etc.

9. Glass and Plastic Industries: conveyor, carton sealers, grinders, creeper paper manufacturing machine, lintec backing, etc.

10. Home Appliances: vacuum cleaner, laundry machine, icecream machine, sewing machine, kitchen equipments, etc.



Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:



We warmly welcome friends from domestic and abroad come to us for business negotiation and cooperation for mutual benefit. To supply customers excellent quality products with good price and punctual delivery time is our responsibility.

Any question or inquiry, pls contact us without hesitate, we assure any of your inquiry will get our prompt attention and reply!

Certification: ISO
Pulley Sizes: Type A
Manufacturing Process: Casting
Material: Iron
Surface Treatment: Polishing
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
US$ 0.01/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

variable pulley

Are there different types of variable pulleys, and how do they vary in applications?

Yes, there are different types of variable pulleys, also known as variable speed pulleys or adjustable pulleys. These pulleys vary in their design and mechanism, leading to differences in their applications and functionality. Here are some common types of variable pulleys and their respective applications:

1. V-Belt Variable Pulleys:

V-belt variable pulleys consist of two cone-shaped pulleys that can move closer or farther apart. As the distance between the pulleys changes, the effective diameter of the pulley changes, thereby altering the speed ratio. These pulleys are commonly used in applications such as:

  • Automotive engines
  • Industrial machinery
  • Power transmission systems

2. Variable Speed Belt Pulleys:

Variable speed belt pulleys are similar to V-belt variable pulleys but use flat belts instead of V-belts. They provide stepless speed variation by adjusting the axial position of the two pulleys. These pulleys find applications in:

  • Machine tools
  • Woodworking equipment
  • Textile machinery

3. Variable Diameter Pulleys:

Variable diameter pulleys, also known as step pulleys or cone pulleys, have multiple steps with different diameters. By manually shifting the belt between different steps, the effective diameter of the pulley changes, resulting in variable speed ratios. These pulleys are commonly used in:

  • Drill presses
  • Lathes
  • Milling machines

4. Variable Pitch Pulleys:

Variable pitch pulleys have a unique design with movable flanges that can change the groove width, altering the effective pitch diameter of the pulley. This adjustment allows for variation in speed ratios. These pulleys are used in applications such as:

  • Conveyor systems
  • Material handling equipment
  • Printing presses

5. Toroidal or Continuously Variable Pulleys:

Toroidal or continuously variable pulleys consist of two discs with a groove in a unique shape. These pulleys provide stepless and continuous variation of the speed ratio by changing the position of the belt along the groove. They are commonly found in:

  • Automotive continuously variable transmissions (CVT)
  • Industrial machinery requiring precise speed control

Each type of variable pulley offers specific advantages and is suitable for different applications based on factors such as the required speed range, torque, precision, and ease of adjustment. By selecting the appropriate type of variable pulley, engineers and designers can optimize the performance of machinery and equipment in various industries.

variable pulley

Can variable pulleys be used in both industrial and DIY applications?

Yes, variable pulleys can be utilized in both industrial and DIY (Do-It-Yourself) applications. The versatility and adjustability of variable pulleys make them suitable for a wide range of uses, from large-scale industrial machinery to smaller DIY projects. Here’s a closer look at how variable pulleys are applicable in both contexts:

Industrial Applications:

In industrial settings, variable pulleys are commonly employed in various types of machinery and equipment for speed control and power transmission. Some notable industrial applications of variable pulleys include:

  • Conveyor Systems: Variable pulleys are used in conveyor systems to adjust the speed of the conveyor belts, allowing for efficient material handling and sorting processes.
  • HVAC Systems: Variable pulleys can be found in heating, ventilation, and air conditioning (HVAC) systems to regulate fan speeds and control airflow, optimizing energy efficiency and comfort.
  • Machine Tools: Variable pulleys are utilized in machine tools such as lathes, milling machines, and drill presses, enabling operators to adjust the rotational speed for different machining operations.
  • Automotive Industry: Variable pulleys are employed in automotive applications, such as continuously variable transmissions (CVT), where they allow for seamless speed adjustments and improved fuel efficiency.
  • Industrial Mixers and Agitators: Variable pulleys are used in mixers and agitators to control the rotational speed of blades or paddles, ensuring proper mixing and blending of materials.

DIY Applications:

In DIY applications, variable pulleys can be utilized by hobbyists, enthusiasts, and individuals working on personal projects. Some common DIY applications of variable pulleys include:

  • Power Tools: DIY enthusiasts often incorporate variable pulleys into homemade power tools, such as belt sanders, drill presses, and grinders, to achieve adjustable speed control.
  • Garden and Yard Equipment: Variable pulleys can be used in DIY projects involving garden and yard equipment, such as lawnmowers or leaf blowers, to adjust the speed of the cutting blades or the airflow.
  • Small Machinery: Variable pulleys can be applied in DIY projects involving small machinery, such as mini lathes or mini milling machines, allowing users to customize the rotational speed for specific tasks.
  • Experimental Setups: Variable pulleys can be incorporated into DIY experimental setups or scientific projects where adjustable speed control is required, such as in physics experiments or mechanical demonstrations.

The adaptability of variable pulleys makes them suitable for a wide range of applications, both in industrial and DIY contexts. Whether it’s for large-scale industrial machinery or small-scale personal projects, variable pulleys provide a flexible and efficient means of achieving adjustable speed control and power transmission.

variable pulley

What is a variable pulley, and how does it function in mechanical systems?

A variable pulley, also known as a variable speed pulley or a variable drive pulley, is a type of pulley designed to provide variable speed ratios in mechanical systems. It consists of two or more pulley halves that can move relative to each other, allowing for adjustment of the effective diameter and thus changing the speed ratio between the input and output shafts.

The primary function of a variable pulley is to provide a means of continuously adjusting the speed of driven components in a mechanical system without the need for manual gear changes or transmission adjustments. This flexibility is particularly useful in applications where speed variations are required to accommodate different load conditions or to achieve specific operational requirements.

The operation of a variable pulley is based on the principle of changing the effective diameter that the belt or chain engages with. It typically consists of a fixed pulley half and a movable pulley half, both connected by a belt or chain. The movable pulley half is designed to slide or pivot, which changes the distance between the pulley halves, thus altering the effective diameter.

When the movable pulley half is positioned closer to the fixed pulley half, the effective diameter increases. This results in a larger belt or chain contact area and a higher speed ratio between the input and output shafts. Conversely, when the movable pulley half is positioned farther away, the effective diameter decreases, leading to a smaller contact area and a lower speed ratio.

Variable pulleys can be actuated by different mechanisms, such as hydraulic, pneumatic, or mechanical means. The actuation mechanism allows for precise adjustment of the movable pulley position, enabling smooth speed transitions and accurate control.

One common application of variable pulleys is in automotive vehicles, where they are used in continuously variable transmissions (CVTs). In a CVT, the variable pulleys provide seamless speed adjustments, allowing the engine to operate at its optimal speed for different driving conditions, resulting in improved fuel efficiency and performance.

In summary, a variable pulley is a pulley system that enables continuous adjustment of speed ratios in mechanical systems. By changing the effective diameter through the movement of pulley halves, it allows for variable speed control without the need for manual gear changes. Variable pulleys find applications in various industries, providing flexibility, efficiency, and precise speed control in mechanical systems.

China wholesaler High Quality Spc 335 mm 8groove V-Belt Pulley for Taper Bush 4040 Interchange for Chiaravalli and Vke   pulley design	China wholesaler High Quality Spc 335 mm 8groove V-Belt Pulley for Taper Bush 4040 Interchange for Chiaravalli and Vke   pulley design
editor by CX


variable pulley

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