BS EN 12965:2019
$167.15
Tractors and machinery for agriculture and forestry. Power take-off (PTO) drive shafts and their guards. Safety
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 42 |
This document specifies safety requirements and their verification for the design and construction of power take-off (PTO) drive shafts and their guards linking a tractor or self-propelled machinery to the first fixed bearing of recipient machinery. It describes methods for the elimination or reduction of risks that need specific requirements including such risks arising from misuse, reasonably foreseeable by the manufacturer. It is applicable only to those PTO drive shafts and guards mechanically linked to the shaft by at least two bearings. When used with compatible guards for power take-off (PTO) of the tractor (master shield) or self-propelled machine and the power input connection (PIC) of the power receiving machine, the requirements for power take-off drive shafts are complete.
Fully enclosing PIC guard cones alone provide full protection.
ISO 500?1 and ISO 500?2 give requirements for the guarding of tractor power take-offs (PTO) and ISO 4254?1 gives requirements for power input connections (PIC) of power receiving machinery that are compatible with the guarding required by this document.
In addition, it specifies the type of information on safe working practices to be provided by the manufacturer.
This document does not deal with:
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the guards totally covering, but not mechanically linked to, the PTO drive shaft;
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the mechanical characteristics of PTO drive shafts, overrun devices and torque limiters;
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general hazards which are dealt with in EN ISO 4254?1:2015 (see introduction).
Environmental aspects have not been considered in this document.
This document is not applicable to PTO drive shafts and their guards that are manufactured before the date of publication of this document by CEN.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | 1 Scope 2 Normative references |
| 8 | 3 Terms and definitions |
| 11 | 4 Safety requirements and/or measures 4.1 General requirements 4.2 Overlap on PTO side |
| 12 | 4.2.1 Universal joint |
| 13 | 4.2.2 Wide-angle universal joint 4.3 Wide-angle guard cone requirements |
| 14 | 4.4 PTO drive shaft guard 4.4.1 General |
| 15 | 4.4.2 Restraining system 4.5 Service and maintenance 4.5.1 Lubrication requirements 4.5.1.1 Lubrication access 4.5.1.2 Lubrication holes 4.5.2 Maintenance requirements |
| 16 | 4.6 Locking system on PTO yoke and PIC yoke 4.6.1 General 4.6.2 Locking system on PTO yoke 4.6.3 Locking system on PIC yoke 5 Verification of safety requirements and/or measures 5.1 General |
| 17 | 5.2 Test for guarding the universal joints including wide-angle |
| 19 | 5.3 Entanglement test 5.3.1 General 5.3.2 Test conditions |
| 21 | 5.3.3 Test sample |
| 22 | 5.3.4 Test procedure 5.3.4.1 General |
| 23 | 5.3.4.2 Test run |
| 24 | 5.3.4.3 Test cycle 5.3.5 Acceptance criteria |
| 25 | 5.3.6 Test report 6 Information for use 6.1 Operator’s manual |
| 26 | 6.2 Marking 6.2.1 General |
| 27 | 6.2.2 Instructional signs 6.2.3 Safety signs |
| 30 | Annex A (informative)List of significant hazards |
| 33 | Annex B (informative)Procedure of how to put the test sample together B.1 General B.2 1st package of the test sample (see Figure B.1) |
| 34 | B.3 2nd package of the test sample (see Figure B.2) |
| 35 | B.4 3rd package of the test sample (see Figure B.3) B.5 Putting together the three packages to a test sample |
| 38 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC aimed to be covered |
