HM Attachment / Electric Coupler
HM Electric Quick Coupler
Electric when you need speed. Manual when you need a backup.
Electric quick coupler for 5–9 ton excavators, with wireless control, triple auto-lock, and manual backup operation. No hydraulic connection required.
CE Certified
Dual Operating Modes
Two operating modes. One coupler.
Electric Mode
Normal operation with electric actuation and wireless control. Change attachments efficiently during daily operations.
Manual Backup Mode
If the electrical system fails, the coupler can still be operated manually, providing a practical backup and helping reduce unnecessary downtime.
Safety
TRIPLE AUTO-LOCK
Three independent locking systems work together to keep every single attachment change positively locked.
The Self-Locking Screw
42CrMo alloy steel with proprietary self-locking thread. Horizontal-push design isolates the screw to pure axial loads — full-thread engagement, designed to resist loosening under vibration.
The Auto-Lock Clutch
Advanced planetary ratchet. Automatic locking with full-tooth disc engagement — carburized alloy steel designed for high-impact durability.
The Safety Lock Block
Failsafe mechanism synchronized with the movable jaw, providing an additional level of locking protection.
Features
KEY FEATURES
Electric Drive System
No hydraulic connection required, simplifying installation and eliminating the need for hydraulic lines.
Triple Auto-Lock
Independent locking points with visual lock indicators.
Manual Backup
Manual operation remains available in the event of electrical failure.
Wireless Control
Wireless remote control as standard, with optional in-cab wired control.
IP67 Protection
Electrical components protected against water and dust ingress.
Control
INTELLIGENT CONTROLLER
- Industrial-grade protection: shorts, overvoltage, overheating, phase loss.
- Diagnostic buzzer for instant error identification.
- IP67 waterproof, 12-24V compatibility.
Setup
SIMPLE INSTALLATION
Designed for straightforward installation without hydraulic connections.
Power Connection
Install wireless control box near battery (12V).
Wire Routing
Connect main cable to coupler.
Remote Pairing
Sync remote for wireless operation.
Testing
Verify automatic locking and operation.
Built to last
ALL-WEATHER DURABILITY
- IP67 waterproof motor + corrosion-resistant coatings.
- Sand/mud-resistant shields and fully sealed electronics.
- Operating temperature: -20°C to 80°C.
Specifications
HM Electric Coupler Technical Specifications
| Parameter | Model EC-02 | Model EC-04 |
|---|---|---|
| Pin Diameter | 45/50 mm | 45/50 mm |
| Length | 540±5 mm | 565±5 mm |
| Width | 240±5 mm | 280±5 mm |
| Height | 299±5 mm | 305±5 mm |
| Arm Opening | 155-180 mm | 195-220 mm |
| Pin Center Distance | 245-265-285 mm | 310 mm |
| Pick Up Range | 245-310 mm | 265-350 mm |
| Vertical Offset | 172±2 mm | 178±2 mm |
| Coupler Weight | 65 kg | 67 kg |
| Operating Voltage | 12/24V | 12/24V |
| Machine Weight | 5-7 Ton | 6-9 Ton |
Compact
COMPACT DESIGN
- Compact design for easier installation and handling.
- Designed for compatibility with common excavator mounting configurations.
- Circuit protection: Phase Loss + Short Circuit + Overload + Overvoltage + Overheat.
Contact for pricing and specifications
Email: hm@hmattachment.com