Snowboard plate-bindings—Requirements and test methods
1Key Takeaways
This document specifies the basic requirements for snowboard bindings without release devices. This document applies to snowboard bindings without release devices for adults and children. This document does not apply to snowboard bindings with release devices or soft snowboard bindings.
2Expert Interpretation
An in-depth interpretation of the national standard GB/T40940-2021 "Requirements and Test Methods for Ski and Snowboard Bindings", covering key technical indicators such as adult/child binding classification, mechanical performance requirements, fatigue test specifications, and adaptability to ice and snow environments, and providing installation and use guidelines and compliance recommendations.
Analysis of the core content of the standard
This standard is equivalent to the ISO14790:2005 international standard, and establishes a complete technical framework for the mechanical performance and safety requirements of ski and snowboard bindings. It focuses on regulating the design of bindings without release devices, and distinguishes between adult type (Type A) and child type (Type C) products.
Comparison of key technical requirements
| Test items | Adult type (Type A) | Child type (Type C) | Test method |
|---|---|---|---|
| Torque bearing capacity (±Mz) | 150N·m | 100N·m | 6.6.1 Low temperature test |
| Forward bending moment (±My) | 550N·m | 300N·m | 6.5 Fatigue test |
| Lateral bending moment (±Mx) | 300N·m | 150N·m | 6.6.1 Multi-directional loading |
Special environmental adaptability requirements
Snow accumulation design requires a gap of ≥2mm between the binding and the sole (Clause 5.3) and pass the PTFE sheet simulation test (Clause 6.7). The fatigue test needs to be carried out at -20℃ for 50,000 cycles (Clause 6.5) to verify the material durability under low temperature conditions.
Implementation and application recommendations
- Label compliance: Children's products must be clearly marked with "maximum applicable weight 45kg" (Chapter 7)
- Installation specifications: M6 tolerance band g-grade screws or special bolts that comply with ISO6004:1991 (Clause 5.4) are preferred
- Test verification: It is recommended to add dynamic impact tests to supplement the performance of the binding under falling conditions
Background of standard evolution
This standard fills the gap in my country's technical specifications for snow sports equipment, and its technical indicators are synchronized with the international ski equipment safety certification system (such as TÜV certification). In 2007, the test load rate calculation formula was updated through technical errata (see the preface) to reflect the latest research results in biomechanics.