Overview
ISO 20957-10:2017 specifies additional safety requirements and test methods for stationary training equipment - specifically exercise bicycles with a fixed wheel or without a freewheel and with a flywheel inertia > 0,6 kg·m². This part is intended to be read in conjunction with ISO 20957‑1 (general safety requirements) and covers hazards, performance and durability criteria that are specific to fixed‑wheel/spin‑type bicycles.
Key topics and technical requirements
- Scope & classification
- Applies to exercise bicycles with a fixed wheel or without freewheel having an inertia > 0,6 kg·m².
- Usage classes follow ISO 20957‑1.
- External construction & guarding
- Transmission elements and rotating parts require adequate covers or guards (transmission guard) and pass reach tests (test finger) to prevent entrapment.
- Minimum distance between pedal cranks and stationary parts: ≥ 10 mm (unless housing diameter larger than crank).
- Flywheel edge radius: ≥ 2,5 mm; pedal edges must be burr‑free/rounded or protected.
- Temperature limits
- Accessible surfaces must not exceed 65 °C (per ISO 13732‑1 referenced).
- Intrinsic loading and structural strength
- Seat pillar: tested with vertical load of 2,5 × maximum user mass or 2 500 N, whichever is greater; slip into seat tube ≤ 5 mm; equipment must not tip or fail.
- Handlebar: vertical load 1,5 × max user mass or 1 500 N; horizontal forward load 0,5 × max user mass or 500 N.
- Pedals: withstand 2,5 × max user mass or 2 500 N.
- Adjustment & locking
- Requirements for seat and handlebar adjustment and insertion depth; tool requirements differ by equipment class (S or H).
- Locking systems and stability tests to ensure safe use.
- Emergency braking & performance
- Emergency brake effectiveness, actuator integrity and visibility requirements; endurance testing for pedal crank assembly.
- Marking, instructions & power display
- Additional marking and user instructions specific to fixed‑wheel bicycles; testing of power display where provided.
- Test methods & reporting
- Detailed test clauses (Clause 6) covering dimensional checks, visual inspection, performance tests and test reports.
Applications - who uses ISO 20957-10 and why
- Manufacturers and product designers: to design compliant fixed‑wheel exercise bikes and specify components (flywheel, pedals, seat pillar, handlebars).
- Test laboratories and conformity assessors: to perform the required strength, safety and performance tests and produce test reports.
- Certification bodies and standards committees: to evaluate compliance for market access and safety certification.
- Commercial gym operators and procurement teams: to specify safe equipment and verify supplier claims.
- Risk assessors and safety engineers: to identify hazards and implement risk reduction per ISO 12100.
Related standards
- ISO 20957‑1 - Stationary training equipment - General safety requirements and test methods (normative companion).
- ISO 12100 - Safety of machinery - Risk assessment and risk reduction.
- ISO 13732‑1:2006 - Ergonomics of the thermal environment - assessment of contact with hot surfaces.
Using ISO 20957-10 helps ensure safer exercise bicycles, consistent test methods, and clearer regulatory/market acceptance for fixed‑wheel and non‑freewheel stationary bikes.
Open preview (PDF)Stationary training equipment — Part 10: Exercise bicycles with a fixed wheel or without freewheel — Additional specific safety requirements and test methods