Excavator Hydraulic Thumbs
JIANGTU JT01 Hydraulic Thumb Bucket — 3–4 Tonne Class
JT01 is a complete hydraulic thumb-bucket assembly with 350/400 mm bucket-width choices, a 900 mm opening and 156 kg weight.
3–4 t
PRODUCT CATEGORY
Excavator Hydraulic Thumbs
Compare an integrated JT01 thumb bucket for 3–4 tonne excavators with a standalone JT02 hydraulic thumb for 4–6 tonne machines. Choose bucket width or existing-bucket tine geometry, then add mounting, cylinder, hoses and pivot service parts.
2 products
Excavator Hydraulic Thumbs
JIANGTU JT02 Standalone Hydraulic Thumb — 4–6 Tonne Class
JT02 is a standalone hydraulic thumb for 4–6 tonne excavators, with a 150 kg attachment weight.
150 kg · 30–55 L/min
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Send a sourcing requestChoose the attachment structure before the cylinder
| Type | Working movement | Installation |
|---|---|---|
| Mechanical thumb | Fixed braced position against the bucket | Bracket and brace on the stick |
| Hydraulic stick mount | Cylinder changes the tine position | Stick base plate, cylinder mounts and valve circuit |
| Main-pin hydraulic thumb | Thumb pivots around the bucket pin | Shared-pin geometry and bucket tooth mesh |
| Integrated thumb bucket | Bucket and gripping section supplied together | Complete dimensioned bucket/gripping assembly |
Buy a complete thumb bucket or keep the existing bucket
| Product | Carrier | Mass | Working geometry | Hydraulics |
|---|---|---|---|---|
| JIANGTU JT01 thumb bucket | 3–4 t | 156 kg | 350/400 mm bucket; 900 mm opening | 25–35 L/min; 90–150 bar |
| JIANGTU JT02 hydraulic thumb | 4–6 t | 150 kg | Length A 600–1,100 mm; width B 200–400 mm | 30–55 L/min; 110–140 bar |
Stick-mounted, main-pin and progressive-linkage thumbs
| Maker/series | Machine class | Structure | Dimensions or movement |
|---|---|---|---|
| Geith HK | 4–30 t | Universal stick mount | Weld-on base plate |
| Geith HT | 12–30 t | Main-pin hydraulic | Up to 140° rotation |
| Geith PL | 9–50 t | Progressive linkage | Up to 180° rotation |
| JIANGTU JT01 thumb bucket | 3–4 t | Complete bucket/thumb | 350/400 mm bucket;900 mm opening;156 kg |
Match the tine path with the actual bucket
Bucket width does not alone describe the thumb. Draw its tine positions between the bucket teeth, the shared or independent pivot, and the full bucket curl path. A quick coupler changes the bucket position relative to a stick-mounted thumb. Record the fitted coupler and tooth layout with the mounting drawing.
A cleanup task separates grasping from excavating
For mixed branches, rocks or broken concrete, a thumb grips an object against the bucket and places it in a receiving pile. A separate rotating grapple orients the load independently; a thumb relies on the bucket and excavator movement. Select the structure around the required reach and placement path, then list cylinder and holding-valve parts on the hydraulic order.
Order the mounting and wear groups
- Thumb or complete bucket/thumb structure
- Base plate or main-pin mounting and associated pins
- Cylinder, pressure/holding-valve arrangement and hoses
- Tine wear protection and bucket tooth/adapter set
- Pivot bushes, cylinder seals and hose ends
Cylinder and pivot replenishment follows the selected structure
| Structure | Cylinder order | Pivot / wear order |
|---|---|---|
| JT01 complete bucket | Cylinder marking and seal dimensions on the bucket assembly | Bucket teeth, thumb/bucket pivots and hose connections |
| JT02 standalone thumb | Cylinder and anchor positions on the existing-bucket mounting | Thumb pivot, tine wear locations and mounting joints |
Buying questions
Is a thumb the same as a grapple?
A thumb grips against the bucket. A separate grapple has its own jaws and may include rotation. They have different working paths and installation requirements.
Can a thumb be selected from bucket width alone?
Width is one measurement. Tine/teeth mesh, pivot position, bucket curl path and the installed coupler also define the combination.
What distinguishes a thumb-bucket order?
It supplies the digging bucket and gripping section as one assembly. A standalone thumb order is designed around the existing bucket and mounting.