Warranty

YUNL Electric Coupler Warranty Coverage

ComponentWarranty PeriodCoverage Details
Cast Steel Housing12 Months12-month replacement for cracks caused by product defects. Exclusions: Damage due to improper operation, unauthorized modifications (e.g., welding, heat treatment).
Brushless Motor12 Months12-month replacement for motor housing cracks. 18-month repair service (parts fee applies). Exclusions: Damage from incorrect wiring, voltage mismatch, water ingress due to poor maintenance, or unauthorized disassembly.
Self-Locking Screw12 Months12-month replacement for fractures caused by defects. 18-month repair service (parts fee applies). Exclusions: Damage from improper use, rust due to damaged protective sleeves.
Self-Locking Clutch12 Months12-month replacement for defects. 18-month repair service (parts fee applies). Exclusions: Normal wear and tear, rust from damaged sleeves.
Auto-Lock BlockLifetimeLifetime replacement for defects (includes safety pins and push mechanisms). Shipping costs borne by the customer.
Wireless Controller12 Months12-month replacement for defects. 18-month repair service (parts fee applies). Exclusions: Damage from incorrect wiring, voltage mismatch, water ingress, or unauthorized repairs.
Damping Rubber6 Months6-month replacement for cracks caused by defects.
Motor Bracket6 Months6-month replacement for defects. 12-month repair service.
Pins6 MonthsExclusions: Bent/twisted pins, wear exceeding 3mm, or damage due to lack of lubrication.

Important Notes:

  • The warranty covers only defects in the coupler itself.
  • YUNL is not liable for indirect losses (e.g., downtime, labor injuries) caused by product defects or other factors.

Upgrade & Support:

  • All YUNL couplers are eligible for modular upgrades (e.g., auto-oil guide system).
  • Free return shipping for upgrades. Discounts apply for retrofits.

Contact Support:
✉️ Service@hmattachment.com