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Aluminum Modified Mountain Bike Bicycles Accessories Single-Disc Hollow Crank
US$0.89-5.19
100 Pieces
Sample price:US$0.99/piece.Request sample
Product profile
Customization
AvailableAfter-sales Service
as SpecificationWarranty
as SpecificationModel NO.
SA-QBCondition
NewCertification
CE, BSCI, EEC, ISO9001, ASTMCustomized
CustomizedApplication
Kids Bike, Road Bike, Mountain Bike, Ordinary Bicycle, SubmersibleChainwheel Teeth
44-52TMaterial
SteelItem
CrankRaw Material
Aluminum, SteelSize
as Your RequirementTechincs
Forging, MachiningBrand Name
Shengao,OEMStandard or Nonstandard
NonstandardFactory
Over 15 Years Experience in ProducingLogo
Customized Logo Is AvailableQuality Control
100% InspectedPrice Range
1~10USD/PCSOEM Service
YesCustom Made
YesLogo Printing
CustomizedMOQ
10-1000PCSFree Sample
YesTransport Package
Plywood BoxSpecification
SGS, ISO9001: 2008, ASTM, GB, DIN, EN124, CETrademark
ShengAoOrigin
Weifang, Shangdong, ChinaHS Code
87089910Production Capacity
50000PCS/MonthKey features
Lifetime Warranty Coverage: Covers all mechanical defects with free parts and labor for the machine's entire life.
24/7 Technical Support: Engineers available via email, phone, or online platform with 8-hour response time.
Customized Logo Available: Logo printing and customization services provided for OEM and bulk orders.
High-Strength Materials: Constructed from Aluminum Alloy and Chromium Molybdenum Steel for durability.
Precision Machining: CNC grade processing with tolerance up to 0.001mm and smooth finish.
100% Quality Inspection: Every part undergoes 100% test and tryout before shipment.
Wide Compatibility: Compatible with 7/8/9/10/11/12 speed chains and various bottom bracket standards.
Competitive Pricing: Price range from 1 to 10 USD per piece with competitive market rates.
Company profile
Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2010-04-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.56h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryWeifang Shengao Machinery Co., Ltd. is a limited company focused on mechanical parts, hardware, metal tools, CNC machine tools, and related components. It identifies as a professional technical supplier and offers 3D software design and broad customization services, including sample-, design-, full-, minor-, and flexible customization. The supplier has written procedures and records for service assessment, corrective actions, and complaint handling. Its export sales share is stated at 71%–90%, with three years of export experience. However, the supplier has nine employees, only two years of total R&D engineer experience, no new products in the past year, no ODM, SDK, or overseas service infrastructure, and no stated customer cases. Audit information is provided for a TUV Rheinland audit with a validity period from September 4, 2025 to September 3, 2026, but the evaluation result is recorded as 0 and no certification name is specified.
Supplier typeThe supplier explicitly identifies as a professional technical supplier and a limited company. Its stated business and product scope covers mechanical parts, hardware products, metal tools, CNC machine tools, functional components, forgings, and powder metallurgy products; the audit record identifies mechanical parts as the primary product.
After-Sales capabilityThe supplier has clear written procedures and followed records for corrective and preventive actions and for handling customer complaints. This directly supports an established service-response process, although the slices do not provide service performance results or response-time data.
Production capacityThe supplier reports an annual production output range, six to ten quality-control staff, on-time delivery, random production quality inspection, and its own factory. It has nine total employees, so the available evidence supports an operating production capability, while capacity beyond the stated output range cannot be determined.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also welcomes OEM and ODM requests according to its company description. These repeated statements provide direct evidence of broad customization coverage, although the separate record states that ODM is not available, creating a conflict on ODM specifically.
Product Q&A
Q:What is a bike crank?
A:
The bike crank, or crankset, is the component that connects the pedals to the bicycle frame via the bottom bracket. It converts your pedaling motion into rotation that drives the chain and rear wheel.
Q:What types of bike cranks do you offer?
A:
We offer a range of cranksets for various disciplines: Road cranks, Mountain bike (MTB) cranks, Gravel/Adventure cranks, Track cranks, and Electric bike (e-bike) cranks.
Q:What are the key parts of a crankset?
A:
A modern crankset typically consists of Crank Arms, Chainrings (or Rings), Spider, and Crank Bolts/Axle.
Q:What is the difference between 1x, 2x, and 3x cranksets?
A:
This refers to the number of front chainrings: 1x (Single) is simpler and lighter; 2x (Double) offers a wide gear range; 3x (Triple) provides a very wide range but is less common now.
Q:How do I know which crank length is right for me?
A:
Crank arm length affects pedaling leverage and comfort. Common lengths range from 165mm to 175mm. Riders are often fitted based on height/inseam, and many are moving to slightly shorter cranks for improved comfort.
Send Inquiry
*To:
Weifang Shengao Machinery Co., Ltd.
Weifang Shengao Machinery Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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