EN ISO 4254-11:2010/A1:2020 PDF

Overview

EN ISO 4254-11:2010/A1:2020 is an amendment to the international safety standard for pick-up balers used in agriculture. Published by CEN in 2020, this document updates EN ISO 4254-11:2010 and is intended to be used together with ISO 4254-1. The amendment clarifies scope and normative references, adds specific requirements for machines combined with bale wrappers, and refines guarding and hazard controls to support conformity with EU Machinery Directive 2006/42/EC.

Key topics and technical requirements

• Scope and application
  • Covers self‑propelled and trailed pick‑up balers, including when combined with bale wrappers (except wrapping functions).
  • Intended to be used together with ISO 4254-1 for a complete hazard coverage.
• Normative references
  • Adds ISO 4254-14:2016 (Bale wrappers) and ISO 12100:2010 (Risk assessment and risk reduction).
• Risk assessment and design principles
  • Reinforces use of ISO 12100 for risk assessment and design choices.
  • Emphasizes removing risks from blockages by design where practicable; if deviation is necessary, the manufacturer must document risk assessment and design specification.
• Guarding and protective measures
  • Crushing and shearing points within 550 mm of the machine outer limit must be guarded per ISO 13857.
  • Specific guarding for lateral crop‑conveying elements: auger guards must extend forward from the rear to at least the auger longitudinal axis; alternative devices require comparable top guarding.
  • Combination solutions (lateral fixed guard + distance barrier + front/side barriers) are recognized where dimensions of the amended Figure 3 are respected.
• Terminology and hazard listing
  • Terms and definitions aligned with ISO 12100 and ISO 4254-1; the amendment updates entries specific to pick-up, feeding element, and assisted areas.
• Annex ZA / regulatory alignment
  • Annex ZA maps clauses to essential requirements of Directive 2006/42/EC (amended by 2009/127/EC), supporting presumption of conformity when cited in the Official Journal.

Practical applications and users

This amendment is relevant to:

• Manufacturers and designers of pick‑up balers and integrated baler/wrapper combinations implementing safety by design.
• Safety engineers and conformity assessors performing risk assessments and preparing technical documentation for CE marking.
• Standards bodies and test laboratories applying updated guarding, measurement and verification criteria.
• Purchasers and fleet operators who require machinery compliant with EU safety requirements.

Related standards

• ISO 4254-1 (General requirements for agricultural machinery safety)
• ISO 4254-14:2016 (Bale wrappers) - wrapping functions covered here
• ISO 12100:2010 (Risk assessment and risk reduction)
• ISO 13857 (Safety distances and guarding)

Keywords: EN ISO 4254-11:2010/A1:2020, pick‑up balers, agricultural machinery safety, bale wrappers, ISO 4254-14, ISO 12100, guarding, risk assessment, Machinery Directive.