Overview - ISO 20957-5:2016 (stationary exercise bicycles & upper body crank equipment)
ISO 20957-5:2016 is the ISO safety standard that specifies additional specific safety requirements and test methods for stationary exercise bicycles and upper body crank training equipment. It supplements the general requirements in ISO 20957‑1, applies to equipment classed as type 5 (stationary exercise bicycles and upper-body crank devices) and covers classes S, H, I and A, B, C per ISO 20957‑1. The standard clarifies equipment classification, required protective measures, test procedures and documentation. It does not apply to roller stands.
Key topics and technical requirements
ISO 20957-5:2016 focuses on practical safety and verification items, including:
- Classification and definitions (see Clause 3) - terms like crank training equipment, freewheel, seat pillar, inertia factor.
- Specific safety requirements (Clause 5) covering:
- Transmission elements and rotating parts (guards and finger-probe protection)
- Temperature rise for components that may heat up
- Intrinsic loading and structural strength for seat pillars, handlebars and pedals
- Seat insertion depth, adjustment, tilting and seat systems (including recumbent designs)
- Handlebar stem adjustment and overall stability
- Additional requirements for combined or upper-body crank equipment
- Requirements for endurance, instructions for use and warning labeling
- Test methods (Clause 6) for verifying safety and performance:
- Dimensional, visual and tactile checks
- Temperature-rise testing
- Finger-probe tests on cranks and moving parts
- Structural loading tests for seat, handlebar and pedal attachments
- Stability and endurance tests
- Power mode tests (constant power, heart-rate control) and power accuracy/repeatability tests for relevant classes
- Reporting - required test-report content and informative annexes (e.g., inertia determination).
Applications - who uses ISO 20957-5:2016
This standard is essential for:
- Fitness equipment manufacturers designing stationary bikes and upper-body crank devices
- Product safety engineers and R&D teams validating mechanical safety and control systems
- Test laboratories and certification bodies conducting compliance testing
- Procurement teams and gym operators specifying safe equipment for commercial or institutional use
- Regulatory and conformity assessment professionals harmonizing with ISO 20957‑1 requirements
Using ISO 20957-5 helps reduce user risk, streamline product approvals and demonstrate compliance with internationally recognized safety and test methods for crank-based fitness equipment.
Related standards
- ISO 20957‑1 - General safety requirements and test methods (mandatory companion)
- ISO 4210‑8 - Pedal and drive system test methods (referenced)
- EN 71‑1 - Mechanical/physical safety of toys (referenced for certain protective aspects)
Keywords: ISO 20957-5, ISO 20957-5:2016, stationary exercise bicycles, upper body crank training equipment, safety requirements, test methods, fitness equipment standards.