CNC Drive Line Folding Bike Crank Set Bicycle Crank for Track Bike

• Customization: Available
• After-sales Service: as Per Specification
• Warranty: 6 Months
• Model NO.: SA-QB12
• Condition: New
• Certification: ISO9001
• Customized: Customized
• Application: Kids Bike, Road Bike, Mountain Bike, Ordinary Bicycle
• Chainwheel Teeth: 24-32T
• Material: Alloy
• Item: Bicycle Crank
• Raw Material: Aluminum, Steel
• Size: as Your Requirement
• Techincs: Forging, Machining
• Brand Name: Shengao,OEM
• Standard or Nonstandard: Nonstandard
• Factory: Over 15 Years Experience in Producing
• Logo: Customized
• Quality Control: 100% Inspected
• Price Range: 1~10USD/PCS
• OEM Service: Yes
• Custom Made: Yes
• Logo Printing: Customized
• MOQ: 10-100PCS
• Free Sample: Yes
• Transport Package: Plywood Box
• Specification: As your requirement
• Trademark: Shengao
• Origin: Weifang City, Shandong Province, China
• HS Code: 87089910
• Production Capacity: 50000PCS/Month
• Package Size: 40.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 3.000kg

Product Description

CNC Drive Line Folding Bike Crank Set Bicycle Crank for Track Bike

Product Description

We have many size and colors of chain wheel, please contect me if you need it.

 

length of crank arm: 170mm

size of chain wheel: 104bcd

crank arm weight: 675g/set

Item	Value
Crank Length	170mm
Chainwheel Teeth	32-42
Use	BMX, Cruisers, Kids' Bikes, Mountain Bikes, Road Bicycles
Brand Name	IXF
Place of Origin	GUA
Category	CRANK
Product name	Bicycle Parts Bicycle Crank
Color	Black Red Blue Green Gold Purple Rainbow
Length	170mm
BCD	104mm
Teeth	32/34/36/38T
Crank material	Aluminum alloy + chromium molybdenum steel
Chainrings Material	Aluminum alloy
Speed	8/9/10/11 speed
Brand	JIANKUN(IXF)
Bottom Bracket	BB91:BC 1.37*24T 68-73mm

Efficiency Gains

• 15% Increased Stiffness: Compared to standard OEM cranksets

• Optimized Q-Factor: Natural pedaling alignment for reduced knee stress

• Reduced Weight: Up to 200g savings over equivalent factory cranksets

Durability Features

• Warranty: 5-year structural warranty against manufacturing defects

• Service Life: 50,000+ km rated service life under normal riding conditions

• Replacement Parts: Widely available chainrings and hardware

       Feature:
       1. Ultralight Hollow Integrated Crank
       2.High Strength Aluminum Alloy + Chromium Molybdenum Steel,Durable and Good Quality
       3.Good Compatible:Single/Double/Triple chainrings; for 7/8/9/10/11/12S chains
       4.Fine processing,make your riding more efficient and easier

        Specifications:        
        1. ISO9001:2008.        
        2.Has advanced euipment and over 15 years experience.        
        3.price: competetive price , Precision made.      
        4. Process: Precision made.Experience & Reasonable QC that you can reply on. Each       
        part would be given 100% test andtryout before shipment.    
        5. Adequate supply capacity. Punctual delivery time.


        Inspections:
        3D instruments, 2D instruments, Projectors, Height Gauges, Inner diameter dial indicators, 
        Dial gaues, Thread and Pin gauges, Digital calipers,Micro calipers, Thickness testers, 
        Hardness testers Roughness testers, etc. ( Detection accuracy to 0.001 millimetre )

 

Mininum of Quantity	100 Piece/Pieces
Unit Weight	0.5kg~300kg
Price	FOB Qingdao,China,USD1.5~1.9
Packing Details	Paper Box in Wooden Pallet
Delivery Time	One month
Payment Terms	L/C, T/T
Machining	CNC or Machining
Supply Capacity	50 Metric Tons per Month
Standard	DIN,ASTM,GOST

 

Competitive Advantages

1. Performance Proven: Tested by professional cycling teams across multiple disciplines

2. Cost Efficiency: Direct manufacturer pricing with 30-50% savings versus branded equivalents

3. Technical Support: Engineering team available for compatibility consultations

4. Continuous Innovation: Annual R&D investment driving material and design improvements

Global Recognition

• Export Markets: Supplying to 30+ countries across Europe, North America, and Asia

• Industry Partnerships: Tier 2 supplier to major bicycle brands and assembly plants

• Quality Recognition: Multiple international design and manufacturing awards

      Delivery time:      Quantity under 20pcs will be dispatched within 2 business days normally. Delivery time
      depends on destination and shipping methods.Please don't hesitate to contact us if you
      have any question.
      We have a mature production process from raw materials to forging, heat treatment,
      machining, surface treatment, etc. The materials include carbon steel, alloy steel, stainless
      steel, aluminum and cooper. The main forging press includes 300T, 400T, 630T, 1000T, 1600T
      and 2500T, which covers product weight from 0.1kg to 100kg. The main machining equipment
      includes lathe, planer, drilling machine, tapping machine, line cutting, milling machine, CNC
      machining center, polishing machine etc., ensuring that we can fulfill different machining
      requirements from our customers.

      We have an individual team of well experienced QC staff and many high-educated technical
      engineers who work throughout the whole manufacturing processes i. e., incoming raw
      materials, production, and final output, to ensure that our products are of high-quality. The
      main inspection equipment includes chemical analyzer, hardness tester, tensile-strength
      tester, magnetic powder flaw detector, metallographic analyzer, etc.

      High quality products, reasonable price, prompt delivery, and superior service ensure
      marketing competitiveness. Our factory has earned high reputation from customers of
      home and abroad. We are looking forward to cooperating with you to forge a better future!

 

FAQ

1. What materials are your cranksets made from?
We offer a range of materials to suit different needs and budgets:

Series CR-100 & CR-MTB: Made from heat-treated 6061-T6 or 7075-T6 forged aluminum alloy, offering an excellent balance of strength, stiffness, and weight.

Series CR-200: Utilizes higher-grade 7075-T6 alloy for enhanced performance and reduced weight.

Series CR-300: Our premium option features carbon fiber arms (often with a titanium or aluminum spindle) for maximum lightness and vibration damping.

2. What crank arm lengths do you offer?
Standard lengths include 165mm, 170mm, 172.5mm, and 175mm. Custom lengths outside this range are available for OEM/ODM orders with sufficient minimum quantities.

3. Are your cranksets compatible with 1x, 2x, and 3x drivetrains?
Yes. We provide various chainring mounting patterns (104/64mm BCD, 110mm BCD, Direct Mount) to support all configurations. Our MTB cranksets often feature Narrow-Wide chainrings optimized for 1x systems.

4. Do you offer cranksets for electric bikes (E-Bikes)?
Absolutely. Our urban/E-bike models feature reinforced construction to handle the higher torque outputs of mid-drive motor systems, ensuring long-term durability and safety.

5. What is the weight of your cranksets?
Weight varies by model and configuration:

Alloy Models: ~580g - 680g

Carbon Fiber Models: From ~480g

Exact weights are listed in the technical specifications for each model.

6. What quality control and testing do your cranksets undergo?
Every crankset batch undergoes rigorous QC:

100% Dimensional Inspection

Material Certification (e.g., for 7075-T6 alloy)

Fatigue Testing: Sampled units are tested to over 100,000 cycles at loads exceeding standard requirements.

Surface & Finish Inspection

7. What is your warranty policy?
We offer a 5-year structural warranty against manufacturing defects under normal use. Wear items like chainrings are not covered. Warranty claims require proof of purchase and proper installation.

8. What is your Minimum Order Quantity (MOQ)?
Standard Models: MOQ starts at 100 pieces.

Custom/ODM Projects: MOQ typically starts at 500 pieces, depending on the complexity.

9. What are your lead times and shipping terms?
Standard Items: Ready to ship in 15-30 days.

Custom Orders: Production takes 45-60 days after final confirmation.

Shipping: We support EXW, FOB, or CIF terms and work with reliable global logistics partners.

        If there's anything I can help, please feel free to contact with us!