Manual tool changes
The locking mechanism is operated with a spanner and does not need a hydraulic locking circuit.
← Quick Couplers & TiltrotatorsJY-MQ series · Excavator attachment
Mechanical quick coupler
A manually operated pin-grabber coupler for changing compatible excavator buckets and attachments. Compare pin diameter, pin centres and mounting width, then confirm the locking arrangement for the selected machine.
- Primary work
- Attachment changes
- Model range
- 7 configurations
Product & applications
About the mechanical quick coupler
A manually operated pin-grabber coupler for changing compatible excavator buckets and attachments. Compare pin diameter, pin centres and mounting width, then confirm the locking arrangement for the selected machine.
Features & benefits
Q345B steel structure
Q345B steel forms the mechanical coupler structure.
Long-stroke pin engagement
The engagement mechanism accommodates different pin-centre distances within its specified range.
Multiple retention components
A safety pin, index pin and locking block retain the attachment connection.
Manual locking mechanism
The mechanical design provides a straightforward installation and tool-change arrangement.
Typical applications
- Attachment changesChange compatible pin-mounted buckets and tools using the manual locking mechanism.
- Bucket interchangeMatch the coupler to the mounting pins of the intended buckets.
- General excavationUse the selected bucket after verifying correct engagement and retention.
Mounting dimensions and attachment weight
Check attachment weight, machine size and installation requirements together.
| Specification | Unit | JY-MQ-00 | JY-MQ-01A | JY-MQ-01B | JY-MQ-02 | JY-MQ-04 | JY-MQ-06 | JY-MQ-08 |
|---|---|---|---|---|---|---|---|---|
| Attachment weight | kg | 24 | 32 | 37 | 50-75 | 80-110 | 170-210 | 350-390 |
| Overall length L2 | mm | 400 | 410 | 455 | 520-542 | 581-610 | 760 | 920-955 |
| Overall width W | mm | 240 | 280 | 295 | 260-266 | 265-283 | 351-454 | 450-483 |
| Overall height H1 | mm | 185 | 250 | 258 | 312 | 318 | 400 | 512 |
| Arm mounting width A | mm | 90-120 | 110-130 | 120-140 | 155-172 | 181-205 | 230-317 | 290-345 |
| Pin centre distance D | mm | 90-130 | 140-180 | 190-230 | 220-275 | 290-350 | 350-400 | 430-480 |
| Pin diameter | mm | 20-30 | 30-40 | 30-40 | 40-45 | 45-55 | 50-70 | 70-90 |
| Vertical pin centre distance F | mm | 185 | 165 | 170 | 200-210 | 205-220 | 240-255 | 300 |
Confirm all mounting dimensions against the selected machine and attachment drawing. Hydraulic requirements apply only to the hydraulic circuits listed for that configuration.
On smaller screens, swipe the table sideways to compare every model.
Installation requirements
Confirm the attachment fits your excavator
Before ordering, send the machine identification and the connection, power and working information relevant to this product.
Machine identification
Excavator model and operating weight
Mounting dimensions
Attachment pin diameter and pin centre distance
Arm width and movement clearance
Arm mounting width and full movement clearance
Locking and retention
Manual locking mechanism and retention components
Dimensional drawing
Confirm dimensional drawing and approved carrier range
Product questions
Mechanical quick coupler questions
How is this coupler operated?
This is a manually operated coupler. Check its locking and retention arrangement before changing compatible attachments.
Will this coupler fit every attachment on my machine?
Check each attachment interface separately, including both pin diameters, pin centres, connection width and locking arrangement. Excavator weight alone is not enough.
What information is needed for a hydraulic connection?
For powered locking or tilt mechanisms, provide available circuits, pressure, flow and control details. A mechanical locking mechanism has different requirements.
Does the locking mechanism need hydraulics?
The listed mechanical locking mechanism is manually operated. This does not establish the requirements of other hydraulic functions on an attached tool.
Can one coupler fit all my buckets?
Only if each bucket’s pin geometry and retention engagement match the selected coupler. Check each connection individually.
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