China high quality 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 I replace a worn-out bike sprocket, or do I need to change the entire drivetrain?

Replacing a worn-out bike sprocket is a common maintenance task and can be done independently without necessarily changing the entire drivetrain. The drivetrain of a bicycle typically consists of the chain, front chainrings, rear cassette sprockets, and derailleurs. Each component plays a crucial role in the smooth functioning of the drivetrain. Here’s what you need to consider when dealing with a worn-out bike sprocket:

  • Assessing Wear: Over time, sprockets can wear out due to regular use and exposure to dirt, grime, and debris. To determine if a sprocket is worn, you can visually inspect the teeth for signs of wear, such as sharp hook-like profiles, elongated teeth, or missing teeth. Additionally, a worn sprocket may cause the chain to slip or skip while pedaling.
  • Replacing Individual Components: If only the sprocket is worn, you can replace it independently. Most modern bicycles have a cassette system, where the rear sprockets are part of a single unit (cassette) that can be removed and replaced. On the other hand, some older or single-speed bikes may have a freewheel system, where the sprockets are threaded onto the hub. In either case, you can replace the worn sprockets with new ones of the appropriate size and speed compatibility.
  • Chain Compatibility: When replacing sprockets, it’s essential to consider the compatibility of the chain. A worn sprocket can accelerate chain wear, and using a new chain with worn sprockets can cause premature chain elongation and skipping. If the chain is relatively new and in good condition, replacing only the sprockets is often sufficient.
  • Upgrading the Drivetrain: In some cases, if multiple components of the drivetrain are significantly worn or damaged, it may be more cost-effective to replace the entire drivetrain as a set. This ensures that all components work optimally together and can improve overall shifting performance and longevity.
  • Seek Professional Help: If you’re unsure about how to replace the sprocket or assess the condition of the drivetrain, it’s best to seek help from a professional bike mechanic. They can inspect your bike, recommend appropriate replacements, and ensure that the new components are installed correctly.

Regular maintenance and timely replacement of worn components can extend the life of your bike’s drivetrain and enhance your riding experience. By replacing individual sprockets or the entire drivetrain when needed, you can keep your bicycle running smoothly and efficiently.

bike sprocket

How do I prevent chain slippage and skipping issues with bike sprockets?

Chain slippage and skipping can be frustrating and potentially dangerous while riding a bicycle. However, there are several preventive measures and maintenance practices that can help minimize these issues:

1. Chain Lubrication:

Regularly lubricating the chain is crucial to reduce friction and wear. Use a bicycle-specific chain lubricant and apply it to the chain links evenly. Wipe off any excess oil to prevent attracting dirt and debris that can contribute to skipping.

2. Chain Cleaning:

Keep the chain clean by regularly removing dirt and grime. Use a chain cleaning tool or a rag soaked in a degreaser to clean the chain thoroughly. Clean chains operate more smoothly and are less likely to skip.

3. Chain Tension:

Proper chain tension is essential for smooth shifting and reduced skipping. If your bike has a derailleur, follow the manufacturer’s guidelines for setting the correct chain tension. In the case of single-speed or internally geared bikes, ensure that the chain tension is appropriately adjusted.

4. Sprocket and Chainring Inspection:

Regularly inspect the sprockets and chainrings for wear. Worn-out teeth can cause chain skipping. Replace any sprocket or chainring that shows significant signs of wear, such as shark-fin-shaped teeth or sharp points.

5. Chain Replacement:

Chains naturally wear out over time, and a stretched chain can lead to skipping issues. Replace the chain before it becomes excessively worn to prevent premature wear on the sprockets.

6. Proper Shifting Technique:

Shift gears smoothly and avoid putting excessive pressure on the chain while shifting. Make sure to ease off the pedals momentarily when shifting to allow the chain to move smoothly between gears.

7. Regular Maintenance:

Perform routine maintenance on your bike, including checking the drivetrain components, cable tension, and derailleurs. Regular maintenance can help identify potential issues before they become major problems.

8. Avoid Cross-Chaining:

Avoid extreme gear combinations known as cross-chaining, such as using the largest chainring with the largest sprocket or the smallest chainring with the smallest sprocket. Cross-chaining can stress the chain and cause skipping.

9. Wheel Alignment:

Ensure that the wheels are properly aligned in the dropouts. Misaligned wheels can lead to poor chain tension and alignment, affecting shifting performance.

By following these preventive measures and conducting regular maintenance, you can significantly reduce the risk of chain slippage and skipping issues with your bike sprockets, ensuring a smoother and more enjoyable ride.

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 high quality The Sprocket Aluminum Alloy Casting Custom Sprocket for Speedway Bicycle  China high quality The Sprocket Aluminum Alloy Casting Custom Sprocket for Speedway Bicycle
editor by CX 2023-10-17