Overview
IEC 61029-2-10:1998 is the International Electrotechnical Commission (IEC) safety standard for transportable motor‑operated cutting‑off grinders used primarily for cutting metal. It is a Part 2 (particular requirements) document to be used in conjunction with IEC 61029-1 and covers cutting‑off grinders that use a plain abrasive cutting‑off wheel with a diameter up to 406 mm and a rated peripheral speed not exceeding 80 m/s.
Key topics and technical requirements
- Scope and definitions: Defines cutting‑off grinders, tool spindle, guard, flange assembly, workpiece fixing device and normal load conditions.
- Marking and documentation: Tools must be clearly marked with rated no‑load speed, maximum wheel diameter, and direction of wheel rotation. The handbook must include safe operation, wheel change, maintenance, and transport instructions.
- Guarding requirements:
- A fixed guard must fully enclose the non‑cutting portion of the abrasive wheel; a movable guard must cover the wheel rim on both sides and return automatically to rest position when withdrawn from the workpiece.
- Design limits include a fixed‑guard opening angle (α) not to exceed 165°, and the lower front of the guard must be below the horizontal plane through the spindle axis for all arm positions.
- Gaps between fixed and movable guards must prevent fingertip access (standard test finger). Where no overlap exists, clearances must be small (≤ 4 mm as specified).
- Mechanical strength and testing:
- Guards are subject to burst containment tests (wheel burst simulated by a projectile or equivalent). After bursting three wheels in the same guard, the guard must remain attached, effective and show no visible cracks (non‑destructive crack detection such as dye penetration or magnetic methods).
- Thickness, material and construction requirements for guards and flanges are specified to resist wheel failure and ejection of fragments.
- User safety instructions: Mandatory guidance includes wearing protective eyewear, not using damaged wheels or operating without guards, and using only wheels recommended by the manufacturer with marked speeds equal or greater than the machine rating.
- Additional technical clauses: Requirements align with general clauses in IEC 61029-1 covering electrical protection, insulation, wiring, components, and endurance tests.
Applications and who uses this standard
- Manufacturers of cutting‑off grinders and abrasive wheels to design, test and certify machines for market entry.
- Test laboratories and certification bodies performing mechanical and containment tests (burst tests, guard integrity).
- OEMs, procurement and safety engineers specifying compliant equipment for workshops, metal fabrication and maintenance facilities.
- Compliance officers and regulators verifying machinery safety and conformity with international safety requirements.
Related standards
- IEC 61029-1 (General requirements for transportable motor‑operated electric tools) - to be used together with this part.
- IEC reference documents for terminology and symbols: IEC 60050, IEC 60027, IEC 60417, IEC 60617.
Keywords: IEC 61029-2-10, cutting‑off grinders safety, abrasive cutting‑off wheel, guard requirements, burst test, machine marking, flange assembly, motor‑operated tools.