Bucket-and-thumb grip
The thumb presses suitable logs, stones or debris against the excavator bucket.
← Grapples & Material HandlingJY-HT series · Excavator attachment
Hydraulic excavator thumb
A hydraulically operated claw that works against the excavator bucket to hold rocks, logs and irregular debris. Check the thumb length, bucket clearance and mounting arrangement together before selecting a configuration.
- Primary work
- Rock handling
- Model range
- 4 configurations
Product & applications
About the hydraulic excavator thumb
A hydraulically operated claw that works against the excavator bucket to hold rocks, logs and irregular debris. Check the thumb length, bucket clearance and mounting arrangement together before selecting a configuration.
Features & benefits
Hydraulic positioning
A cylinder moves the thumb to grip or release material.
Complementary tool
The attachment adds a gripping function to a compatible bucket rather than replacing it with standalone grapple jaws.
Typical applications
- Rock handlingHold suitable rocks against the bucket while repositioning them.
- Logs and branchesClamp timber and branches during site clearance.
- Demolition debris handlingGrip irregular debris that a bucket alone cannot retain easily.
Compare dimensions and hydraulic requirements
Check attachment weight, machine size and installation requirements together.
| Specification | Unit | JY-HT-04 | JY-HT-6 | JY-HT-08 | JY-HT-10 |
|---|---|---|---|---|---|
| Excavator operating weight | t | 4-6 | 6-9 | 12-16 | 17-23 |
| Attachment weight | kg | 150 | 200 | 500 | 650 |
| Thumb length | mm | 600-1100 | 800-1400 | 1200-1500 | 1400-1700 |
| Thumb width | mm | 200-400 | 200-400 | 350-500 | 400-640 |
| Hydraulic pressure | bar | 110-140 | 120-160 | 150-170 | 160-180 |
| Hydraulic oil flow | L/min | 30-55 | 50-100 | 90-110 | 100-140 |
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
Bucket geometry
Bucket width, shape and opening path
Mounting position and cutting reach
Thumb mounting position and pin or weld-on arrangement
Cylinder travel and clearance
Cylinder travel and clearance throughout movement
Hydraulic supply
Available hydraulic flow and pressure
Product questions
Hydraulic excavator thumb questions
Can the thumb use the same mounting check as a grapple?
No. Confirm the pin-on or weld-on arrangement, thumb pivot, cylinder anchors and the clearance between the bucket and thumb.
What should I check through the movement range?
Check bucket width, tooth alignment, thumb length, cylinder travel and clearance against the selected installation drawing.
Will the thumb match my existing bucket?
Compare thumb reach, bucket profile, linkage movement and coupler height. The bucket and thumb must work together without interference.
Is a thumb a standalone grapple?
No. A thumb normally works against the bucket. A standalone grapple has its own gripping jaws and mounting arrangement.
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