China wholesaler The Sprocket Aluminum Alloy Casting Custom Sprocket for Speedway Bicycle

Product Description

Product Description

the sprocket aluminum alloy casting custom sprocket for speedway bicycle
 

  Material  Tensile Strength  Yield Strength (0.2%)  Impact Strength  Shear Strength  Hardness  Elongation   
  PSI X 10³  PSI X 10³  FT lb  PSI X 10³  Brinell (HB)  % in 50mm 
ADC12  45 22 3 75 3.5
A380  47 23 3 27 80 3.5
A360  46 24 26 75 3.5
B390  46 36 120 1
ZAMAK 3  41 32 43 31 82 10
ZAMAK 5  48 33 48 38 91 7
ZA27  61 55 9.4 47 119 3

What kind of die casting we can supply?
 

Machine  Die casting machine 88 ton/280 ton/400 ton/500 ton/800 ton/1250 ton 
Material  Aluminum alloy ADC10 . ADC12 . A 360 . A380  .zinc alloy
Process  Drawing & Samples→Mould making→ Die casting  →  Deburring  → 
 Drilling and threading →  CNC Machining  → Polishing  →  Surface treatment 
 →  Assembly  →  Quality inspection  →  Packing →Shipping
Surface treatment  Polishing, Sandblasting, Painting, Powder coating, Galvanizing, Chrome plating,Spray coating, 
Application   Led light housing & Led Heatsink
  Auto & motocyle & bicycle  parts
  Furniture accessories         
  Power tool housing                                                       
  Pump housing 
  Mechanical parts   
Diecasting kitchen utensils
Drawing Format Auto CAD,CAD, PDF,3D, SLDPRT
ISO Cetificate  ISO9001-2008, Rohs
Payment term T/T, L/C, Western union
QC system 100% inspection before package or 1 by one
Lead time 10~25working days according on quantity
Monthly capacity 50,000pcs
Our advantage  More than 15 years of experience in die casting field.                                               
 With talented and experienced engineers

 Why you choose us?

  1.we have full automatic equipment (Cold chamber die-casting machine, hot chamber die-casting machine, second machining center, multi-axis drilling machine ….

 2.we Can also supply with plated and anodized or chromated finish. Plated finish includes zinc, nickel, chrome, antique copper, antique brass etc.

 3. professional R & D team (mold designer, mold programmer, etc.)

 4. Experienced quality QC team(100% inspection before shipping and provide full tracking services).

5. the excellent sales department (to provide you with 24 hours of service, High quality and competitive prices and timely delivery) .

6. OEM and ODM services (your ideas we realize, your drawings we produce).

7.We have lots of experience in export, we export to many country, Mainly in America and Europe. 

What kind products we can do?

. Led light housing & Led Heatsink & led industrial high light

. Auto & motocyle & bicycle  parts

.Juice extractor & Coffee machine base 

. Furniture accessories  & hardware

. Power tool housing   
 

Our Advantages

company-HangZhou-HongHangZhou-Precision-Technology-Co-Ltd-.html

Hong Fu Xin precision technology company founded in 2004 with having ISO9001: 2008 & RoHS certificates. we are specialized in diecasting parts in past 15years. we have full-automatic diecasting machine from 88t to 1250t,4000m2 CZPT workshop, various CNC machining equipment. We are familiar with various surface treatment which have electroplate  ,   Powder coating , anodized  , high Polishing ,  Shot blasting ,  Sand blasting so on…

FAQ:

1. Are you a manufacturer or a trading company?

We are a professional manufacturer with over 15 years’ export experience for designing and producing mult die casting parts.
 

2. How can I get some samples?

If you need, we are glad to offer you free samples,but the new clients are expected to pay the courier cost, and the charge will be deducted from the payment for formal order.
 

3. Can you make casting according to our drawing?

Yes, we can make casting according to your drawing, 2D drawing, or 3D cad model. If the 3D cad model can be supplied, the development of the tooling can be more efficient. But without 3D, based on 2D drawing we can still make the samples properly approved.
 

4. Can you make casting based on our samples?

Yes, we can make measurement based on your samples to make drawings for tooling making.
 

5. What’s your quality control device in house?

We have spectrometer in house to monitor the chemical property, tensile test machine to control the mechanical property and UT Sonic as NDT checking method to control the casting detect under the surface of casting.

 

 

Die Casting Machine Type: Hot Chamber Die Casting Machine
Die Casting Method: Precision Die Casting
Application: Auto Parts
Machining: CNC Machining
Material: Aluminum, A360/As80/A356, Zinc Alloy
Surface Preparation: Powder Coating
Customization:
Available

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Customized Request

bike sprocket

Can bike sprockets affect the overall speed and efficiency of a bicycle?

Yes, bike sprockets play a significant role in determining the overall speed and efficiency of a bicycle. The sprockets are part of the drivetrain, which includes the chain, front chainrings, and rear sprockets (also known as cogs). The size and number of teeth on the sprockets can impact the bike’s speed, pedaling cadence, and overall performance. Here’s how bike sprockets affect the bike’s speed and efficiency:

  • Speed and Gear Ratios: The number of teeth on the front chainrings and rear sprockets determines the gear ratios available on the bike. Larger chainrings or sprockets generally provide higher gear ratios, suitable for higher speeds and flat terrain. Smaller chainrings or sprockets offer lower gear ratios, ideal for climbing hills and maintaining control at lower speeds.
  • Efficient Pedaling: Choosing the right combination of chainring and sprocket (gear) ensures efficient pedaling. When the gear ratio matches the terrain and rider’s abilities, they can maintain an optimal pedaling cadence. Pedaling too fast or too slowly can lead to inefficiency and fatigue.
  • Cadence: Cadence refers to the speed at which a cyclist pedals. Finding the right cadence is crucial for energy efficiency and endurance. With the appropriate gear ratio, cyclists can maintain their preferred cadence, whether they want to spin at a high cadence for endurance or push harder at a lower cadence for more power.
  • Effect on Terrain: Different terrains require different gear ratios. Steep climbs demand lower gears to provide enough power without putting excessive strain on the rider’s legs. On flat or downhill stretches, higher gears enable the rider to attain higher speeds with less pedaling effort.
  • Aerodynamics: Speed and efficiency can also be affected by the rider’s position and aerodynamics. Higher gears that allow for faster speeds can expose the rider to more wind resistance, making it harder to maintain speed compared to using lower gears.
  • Mechanical Efficiency: The condition of the chain and sprockets also influences mechanical efficiency. A well-maintained drivetrain with clean and properly lubricated sprockets and chain reduces friction and improves power transfer, enhancing overall efficiency.

Choosing the appropriate sprocket sizes and gear ratios for your riding style and the terrain you frequent can significantly impact the bike’s speed and efficiency. Regular maintenance, including keeping the sprockets clean and in good condition, is crucial for maintaining optimal performance.

bike sprocket

What are the best practices for adjusting bike sprockets and ensuring smooth shifting?

Properly adjusting bike sprockets and ensuring smooth shifting are essential for a comfortable and efficient cycling experience. Here are the best practices to follow:

1. Check Chain Condition:

Before adjusting the sprockets, inspect the chain for wear and damage. A worn-out chain can cause poor shifting performance and premature wear on the sprockets. Replace the chain if it shows significant elongation or signs of damage.

2. Set Limit Screws:

Start by setting the limit screws on the front and rear derailleurs. The limit screws control the range of movement of the derailleur, preventing the chain from falling off the sprockets. Follow the manufacturer’s instructions to adjust the limit screws properly.

3. Index the Gears:

Indexing ensures precise shifting between gears. Use the barrel adjusters on the shifters or derailleurs to fine-tune the indexing. Shift the gears while turning the pedals to check for smooth and accurate shifting. Make adjustments as needed until all gears shift cleanly and without hesitation.

4. Check Cable Tension:

Ensure the cables are properly tensioned. Loose cables can lead to slow or incomplete shifting. Use the barrel adjusters to adjust the tension until the shifting is crisp and responsive.

5. Check Chainline:

Ensure the chain runs straight from the front chainring to the rear sprockets. Misalignment can cause chain rub and poor shifting. Adjust the front derailleur position and spacers as necessary to achieve a straight chainline.

6. Lubrication:

Keep the sprockets and chain well-lubricated to reduce friction and wear. Use a bicycle-specific chain lubricant and apply it regularly, especially after riding in wet or muddy conditions.

7. Maintain Components:

Keep all drivetrain components, including the chain, derailleurs, and shifters, clean and free from dirt and debris. Regularly inspect these components for signs of wear and damage.

8. Professional Tune-Up:

If you are unsure about adjusting the sprockets and drivetrain yourself, consider taking your bike to a professional bike mechanic for a tune-up. They can perform a thorough inspection, make necessary adjustments, and ensure your bike’s shifting is optimized.

By following these best practices, you can achieve smooth and reliable shifting, extending the lifespan of your sprockets and drivetrain components while enhancing your overall cycling experience.

bike sprocket

How do I choose the right size and number of teeth for bike sprockets?

Choosing the right size and number of teeth for bike sprockets, both front chainrings and rear cassette sprockets, is essential to optimize your bicycle’s performance and gearing for your riding needs. Here’s how you can make the right selection:

1. Consider Your Riding Terrain:

Take into account the type of terrain you’ll be riding on most frequently:

  • Flat Terrain: For mostly flat or gently rolling terrain, larger front chainrings and rear sprockets with more teeth provide higher gear ratios and greater speed potential.
  • Hilly Terrain: If you’ll be riding in hilly areas, consider smaller front chainrings and rear sprockets. These lower gear ratios will make climbing easier by requiring less pedaling effort.

2. Assess Your Fitness Level:

Your fitness level and leg strength play a role in gear selection. Cyclists with more strength and fitness may prefer larger chainrings and sprockets for faster riding, while beginners or less experienced riders may benefit from smaller gears for easier pedaling.

3. Determine Your Gear Range:

Consider the range of gears you’ll need to cover your typical rides. Having a good gear range ensures you have options for different riding conditions. A wide range of gears allows you to comfortably pedal at various speeds and tackle steep climbs and fast descents.

4. Understand Gear Ratios:

It’s essential to understand how gear ratios work. The gear ratio is determined by the number of teeth on the front chainring divided by the number of teeth on the rear sprocket. For example, if the front chainring has 50 teeth and the rear sprocket has 20 teeth, the gear ratio is 50/20 = 2.5.

5. Experiment and Test:

Choosing the right sprocket sizes may involve some trial and error. If possible, test ride bicycles with different gear setups to get a feel for what works best for you. Consider factors like comfort, ease of pedaling, and the ability to maintain a comfortable cadence.

6. Seek Expert Advice:

If you’re unsure about selecting the right sprocket sizes, don’t hesitate to seek advice from a knowledgeable bike mechanic or a reputable bike shop. They can provide valuable insights and help you find the best gear configuration for your specific needs.

Remember, the ideal sprocket sizes for your bike may depend on personal preference, fitness level, riding style, and the type of riding you plan to do. By understanding the principles behind gear ratios and considering your unique riding requirements, you can choose sprockets that enhance your biking experience and help you achieve your cycling goals.

China wholesaler The Sprocket Aluminum Alloy Casting Custom Sprocket for Speedway Bicycle  China wholesaler The Sprocket Aluminum Alloy Casting Custom Sprocket for Speedway Bicycle
editor by CX 2023-12-06