Overview
ISO 22915-4:2018 - "Industrial trucks - Verification of stability - Part 4" defines test methods to verify the static and dynamic stability of pallet stackers, double stackers, and order-picking trucks with an elevating operator position up to and including 1 200 mm. Applicable to trucks with rated capacities up to and including 5 000 kg, this ISO standard covers trucks with tilting or non-tilting masts or fork arms, trucks fitted with load‑handling attachments, and order‑picking trucks fitted with additional lifting devices. ISO 22915-4:2018 is the second edition (2018) and is part of the ISO 22915 stability verification series.
Key topics and technical requirements
- Scope & applicability: Specifies which truck types and configurations fall under the standard (lift height ≤ 1 200 mm, capacity ≤ 5 000 kg).
- Test conditions: Defines environmental and setup requirements for stability testing, referencing general provisions in ISO 22915-1.
- Truck positioning on a tilt table: Detailed rules for aligning the load axle and drive/steer axle relative to the tilt axis; special provisions for single/dual drive wheels, castors, articulating frames and sprung or non‑sprung castors.
- Datum points and load positioning: Establishes datum points (E, F, F1) for repeatable measurement when lifting and prescribes upper‑load positions for double stackers (e.g., heel distances for standard load distances).
- Tests and verification matrix: A set of numbered tests (Tests 1–9) and a verification table (Table 1) define which combinations of longitudinal/lateral tests, load leading/trailing, travel simulation, lift heights and mast positions must be performed.
- Tilt‑table angles and criteria: Numeric tilt angles and percentage gradients are prescribed in Table 1; some values are functions of travel speed (v) and maximum gradient (i).
- References and terminology: Uses definitions from ISO 5053-1 and the general test principles in ISO 22915-1.
Practical applications
- Product design validation and stability performance testing for manufacturers of pallet/double stackers and order‑picking trucks.
- Type testing and conformity assessment for compliance with international stability requirements.
- Test laboratories and certification bodies implementing standardized tilt‑table procedures.
- Safety engineers, fleet managers and buyers assessing truck suitability for specific operational conditions (lift height, load attachment, travel speed and gradients).
Who should use this standard
- Industrial truck OEMs and R&D teams
- Test labs and certification bodies (type testing)
- Occupational safety professionals and procurement specialists
- Standards and compliance officers in warehousing and logistics
Related standards
- ISO 22915-1 - Industrial trucks - Verification of stability - Part 1: General
- ISO 5053-1 - Industrial trucks - Terminology and classification - Part 1: Types of industrial trucks
- Other parts of the ISO 22915 series covering counterbalanced, reach and straddle trucks
Keywords: ISO 22915-4:2018, industrial trucks, stability verification, pallet stackers, double stackers, order-picking trucks, tilt table tests, lift height 1200 mm, rated capacity 5000 kg.
Open preview (PDF)Industrial trucks — Verification of stability — Part 4: Pallet stackers, double stackers and order-picking trucks with operator position elevating up to and including 1 200 mm lift height
