The Bicycle Crank Pedaling Fatigue Testing Machine is specifically designed to evaluate the fatigue strength and durability of bicycle cranksets under repeated pedaling loads. The system complies with EN 15194, ISO 4210, EN 14781, EN 14766, EN 14764, as well as multiple international bicycle testing standards including CNS, JIS, DIN, NF, CPSC, CSA, AS, and BS.
The machine simulates real-world pedaling conditions by applying alternating cyclic loads to both crank arms through two servo-controlled electric actuators. The loading position, force magnitude, frequency, and cycle count are precisely controlled, enabling manufacturers to verify crankset reliability, structural integrity, and fatigue life before market release.
The equipment supports all crank configurations specified in ISO 4210 and EN 15194 fatigue testing requirements and is suitable for conventional bicycles, mountain bikes, road bikes, city bicycles, and electric bicycles.
Applicable Test Standards
ISO 4210 Bicycle Safety Requirements
EN 15194 Electrically Power Assisted Cycles (EPAC)
EN 14781 Racing Bicycles
EN 14766 Mountain Bicycles
EN 14764 City and Trekking Bicycles
CNS Bicycle Standards
JIS Bicycle Standards
DIN Bicycle Standards
NF Bicycle Standards
CPSC Bicycle Regulations
CSA Bicycle Standards
AS Bicycle Standards
BS Bicycle Standards
Pedaling Force Requirements (Reference)
Bicycle Type | Applied Force (F1) |
City Bicycle | 1000 N |
Children's Bicycle | 1000 N |
Mountain Bike | 1200 N |
Racing Bicycle | 1100 N |
Key Features
Designed according to ISO 4210 and EN 15194 requirements
Dual servo electric cylinder loading system
Full closed-loop force control
Sinusoidal fatigue loading waveform
Real-time force and frequency monitoring
Automatic stop upon specimen failure
Automatic stop when target force cannot be maintained
High-speed data acquisition and analysis
Computer-controlled operation and reporting
Suitable for bicycle and e-bike crank fatigue testing
Test Functions
Crank Pedaling Fatigue Test
Simulates repetitive pedaling loads applied to both crank arms during actual cycling.
Durability Verification Test
Evaluates crankset fatigue resistance after long-term cyclic loading.
Structural Integrity Assessment
Detects deformation, cracking, loosening, or failure of crank assemblies.
Product Development Testing
Validates new crank designs before production.
Quality Control Testing
Confirms manufacturing consistency and compliance with international standards.
Technical Specifications
Item | Specification |
Maximum Test Frequency | 0 – 5 Hz |
Load Sensors | 5000 N × 2 Disc-Type Load Cells |
Load Resolution | 1/10000 |
Drive System | Servo-Controlled Electric Cylinders |
Number of Actuators | 2 |
Stroke | 150 mm (±75 mm) |
Test Cycle Counter | 0 – 999,999 Cycles |
Control Method | Full Closed-Loop Force Control |
Control Modes | Force, Displacement, Time |
Software | Feihong Proprietary Control Software |
Display | Computer & Monitor |
Data Acquisition | High-Speed Acquisition Card |
Force Sampling Frequency | >200 kHz |
Loading Waveform | Sinusoidal Wave |
Auto Stop Functions | Specimen Failure Detection, Force Loss Detection |
Fixture | Crank Fatigue Test Fixture × 1 |
Machine Weight | Approx. 400 kg |
Power Supply | AC 220V |
Power Consumption | 2.5 kW |
Test Frame Dimensions | 1720 × 1280 × 2060 mm |
Control Cabinet Dimensions | 680 × 600 × 1430 mm |
Computerized Data Analysis Functions
The integrated software system automatically records and analyzes test data, including:
Real-time Force vs. Time Curve
Real-time Frequency vs. Time Curve
Maximum Applied Force
Failure Detection Value
Curve Comparison Analysis
Standard Deviation Calculation
Average Value Calculation
Automatic Test Report Generation
Data Export and Storage
Fixture Configuration
The test setup uses two interchangeable crank arms with a length of 175 mm, positioned at a 45° inclination angle (±2° tolerance) according to standard requirements.
The crank assembly is mounted to simulate realistic drivetrain geometry, ensuring accurate load transmission and compliance with international testing procedures.
Advantages
Accurate Simulation of Real Pedaling Conditions
Dual servo actuators reproduce alternating left-right pedaling forces encountered during actual riding.
High-Precision Closed-Loop Control
Advanced force control ensures excellent repeatability and compliance with international standards.
Comprehensive Data Acquisition
High-speed sampling enables precise monitoring of force fluctuations and fatigue behavior throughout the test.
Ideal for Certification and R&D
Suitable for product certification, quality assurance, durability validation, and new product development.
FAQ
Q1: What components can be tested?
A: The machine is designed for bicycle crank arms, cranksets, chainring-crank assemblies, and e-bike crank systems.
Q2: Which standards does the machine comply with?
A: It complies with ISO 4210, EN 15194, EN 14781, EN 14766, EN 14764, and multiple international bicycle testing standards.
Q3: What is the maximum testing frequency?
A: The machine supports fatigue testing frequencies from 0 to 5 Hz.
Q4: How many load actuators are included?
A: The system is equipped with two servo-controlled electric cylinders for simultaneous crank loading.
Q5: Does the software generate test reports?
A: Yes. The software automatically records test data, generates graphs, calculates statistics, and exports professional test reports.
