Hand-Held Electric Grinders, Polishers and Disk-Type Sanders are subject to mandatory BIS ISI certification under the Safety of Hand-held Motor-Operated Electric Tools (Quality Control) Order, 2026. From 12 mo after publication of the QCO in the e-Gazette, these products cannot be lawfully manufactured for sale, imported, or distributed in India without a valid BIS ISI licence under IS 4665 (Part 2/Sec 3):2023. Non-compliance attracts penalties under the BIS Act, 2016 — product seizure, fines, and prosecution.
This guide covers the applicable Indian Standard, key technical and safety requirements, the step-by-step certification process, documentary requirements, and the most common compliance pitfalls for manufacturers and importers.
📜 Applicable Indian Standard
- IS 4665 (Part 2/Sec 3):2023 — Hand-Held Electric Grinders, Polishers and Disk-Type Sanders (primary standard)
- Aligned with the corresponding IEC / ISO standard for technical performance and safety
- Latest amendments notified by BIS apply automatically
📌 Angle grinders are among the most injury-prone power tools sold in India. The QCO enforces wheel-guard integrity, dead-man switch operation, and mechanical durability — critical for protecting users from spinning-disc failures.
🔬 Key Quality Requirements Under IS 4665 (Part 2/Sec 3):2023
BIS-approved laboratories evaluate the following during type testing:
Electrical Safety
Insulation, dielectric strength, leakage current, and earthing per IEC 60745-2-3. Double-insulation verification on class II tools.
Wheel-Guard & Switch
Wheel guard retention, dead-man switch operation, anti-restart protection, and disc-burst containment requirements.
Mechanical Durability
Drop, impact, and spindle-locking testing. Motor and gearbox endurance under prescribed cycles.
EMC & Marking
EMC immunity and emissions. Voltage, wattage, max disc diameter, spindle thread, and ISI Mark plus licence number on tool body.
Products covered under IS 4665 (Part 2/Sec 3):2023:
- Angle grinders — 100 mm, 125 mm, 230 mm variants
- Polishers / buffers for automotive and metal finishing
- Disk-type sanders for wood and surface preparation
- Die grinders for precision metalwork
📋 Step-by-Step BIS ISI Certification Process
- Variant ScopingList every disc size, wattage, and switch configuration. Each unique construction may need separate sample testing.
- Application FilingSubmit online application on manak.bis.gov.in. Indian manufacturers via Product Certification Scheme; foreign manufacturers via FMCS with appointed AIR.
- Sample TestingSubmit complete tools to a BIS-recognised power-tool testing laboratory. Electrical, wheel-guard, and mechanical tests: approximately 4–6 weeks.
- Factory InspectionBIS officers inspect motor winding, gearbox assembly, switch mechanism, and in-house testing capability.
- Licence GrantBIS issues the ISI Mark licence. ISI Mark plus licence number is applied on the tool body and packaging.
- Surveillance & RenewalPeriodic BIS market sample testing, factory audits, and annual marking fees keep the licence active.
📄 Documents Required
- Company incorporation / registration certificate
- Product list with disc size, wattage, and spindle thread
- Engineering drawings and BOM with critical-component specs
- Wheel-guard and switch mechanism design records
- EMC test plan and product safety documentation
- Quality Manual / ISO 9001 certificate (if available)
- AIR appointment letter (for foreign manufacturers)
- Existing test reports from BIS-recognised labs (if any)
⚠ Common Compliance Pitfalls
Common issues include wheel-guard slippage under burst testing, switch sticking in the ON position, motor overheating under endurance, and missing or incomplete max-disc markings.
🏭 Special Considerations for Importers
Angle grinders and polishers are imported in very high volume. Each variant requires its own BIS ISI certification. Importers and e-commerce sellers must hold valid BIS documentation before listing or customs clearance.
Get BIS Certified — We Handle Everything
Global Approbation manages end-to-end BIS ISI / FMCS registration for Grinders, Polishers & Disk Sanders — from documentation to licence grant. Enforcement begins 12 mo from QCO notification.
BIS ISI / FMCS Services Talk to Our Team