Pin-On Hydraulic Thumb
ACS Pin-On Hydraulic Thumbs are custom designed & manufactured to work with a specific bucket so that they integrate seamlessly with the bucket’s geometry, giving the operator the widest range of motion possible in all job applications.
The heavy duty hydraulic cylinder allows operator to pull material toward the bucket and improves safety and productivity by eliminating manual adjustment. Requires compatible auxiliary hydraulics, or wet kits, for operation; sold separately through ACS.
Thumb teeth are crafted from AR400 steel, ensuring long service and consistent wear over the life of the attachment. Available with either serrated or smooth teeth.
Important Notes
Pin-on thumbs are made specifically for the bucket they will be used over. For the best customer satisfaction, lowest installation cost and maximum productivity ACS recommends you use an ACS bucket that is specifically designed to fit and work with your thumb.
Adding a Coupler: ACS will vary the thumb length according to whether or not you plan to use the thumb on a coupler-equipped machine. A thumb on a coupler-equipped excavator needs to be longer in order to interlace correctly with the bucket teeth.
Pin-On Hydraulic Thumb Links
Tech Specs
Machine Requirements
Machine must have third-function hydraulics to actuate thumb cylinder.| Excavator Size | Bucket Width
Inches |
Number of Bucket Teeth | Number of Thumb Teeth | Weight
US Pounds |
|---|---|---|---|---|
| All weights are approximate. Weights are estimated assuming no add-ons, options or payloads. | Class 5 6-8 Metric Tons 13,200-17,600 lbs |
24" | 4 teeth | 3 teeth | 425 lbs |
| 30" | 5 teeth | 4 teeth | 450 lbs | |
| Class 10 8-14 Metric Tons 17,600-30,800 lbs |
18" | 3 teeth | 2 teeth | 730 lbs |
| 24" | 3 teeth | 2 teeth | 850 lbs | |
| 30" | 4 teeth | 3 teeth | 870 lbs | |
| 36" | 5 teeth | 4 teeth | 870 lbs | |
| Class 15 14-18 Metric Tons 30,600-39,600 lbs |
18" | 3 teeth | 2 teeth | 850 lbs |
| 24" | 3 teeth | 2 teeth | 850 lbs | |
| 30" | 4 teeth | 3 teeth | 870 lbs | |
| 36" | 5 teeth | 4 teeth | 870 lbs | |
| 42" | 5 teeth | 4 teeth | 870 lbs | |
| Class 20 18-22 Metric Tons 39,600-48,400 lbs |
24" | 3 teeth | 2 teeth | 1,200 lbs |
| 30" | 4 teeth | 3 teeth | 1,250 lbs | |
| 36" | 4 teeth | 3 teeth | 1,325 lbs | |
| 42" | 5 teeth | 4 teeth | 1,325 lbs | |
| 48" | 6 teeth | 5 teeth | 1,400 lbs | |
| Class 25 22-28 Metric Tons 48,400-61,600 lbs |
30" | 4 teeth | 3 teeth | 1,200 lbs |
| 36" | 4 teeth | 3 teeth | 1,200 lbs | |
| 42" | 5 teeth | 4 teeth | 1,250 lbs | |
| 48" | 6 teeth | 5 teeth | 1,250 lbs | |
| 54" | 6 teeth | 5 teeth | 1,400 lbs | |
| Class 30 28-36 Metric Tons 61,600-79,200 lbs |
36" | 4 teeth | 3 teeth | 1,690 lbs |
| 42" | 5 teeth | 4 teeth | 1,690 lbs | |
| 48" | 5 teeth | 4 teeth | 1,690 lbs | |
| 54" | 6 teeth | 5 teeth | 1,800 lbs | |
| 60" | 6 teeth | 5 teeth | 1,800 lbs | |
| Class 40 36-50 Metric Tons 79,200-110,000 lbs |
36" | 4 teeth | 3 teeth | 2,540 lbs |
| 42" | 5 teeth | 4 teeth | 2,750 lbs | |
| 48" | 5 teeth | 4 teeth | 2,750 lbs | |
| 54" | 6 teeth | 5 teeth | 2,960 lbs | |
| 60" | 6 teeth | 5 teeth | 2,960 lbs | |
| Class 50 50-60 Metric Tons 110,000-143,000 lbs |
42" | 4 teeth | 3 teeth | 3,180 lbs |
| 48" | 4 teeth | 3 teeth | 3,400 lbs | |
| 54" | 5 teeth | 4 teeth | 3,400 lbs | |
| 60" | 6 teeth | 5 teeth | 3,700 lbs | |
| 66" | 6 teeth | 5 teeth | 3,700 lbs | |
Options
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Custom Thumb Design
ACS will custom design your Pin-On Thumb to fit another manufacturer's (non-ACS) bucket. A measurement sheet and instructions will be provided for communicating bucket data to our engineering team. -
Hydraulic Activation Kit
Also called a wet kit. Provides turnkey solution for excavators not already plumbed for additional hydraulic attachments. Customer chooses which operational control (included) to install with the kit: Joystick Control or Foot Pedal Control. -
Serrated or Smooth Teeth
Serrated teeth provide a more secure grip on the material being handled. Smooth teeth don't mar or cut into the material. We recommend smooth teeth for working with things like logs that will be cut into lumber or stones intended for use in decorative landscaping.
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Pin-On Hydraulic Thumb
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Pin-On Hydraulic Thumb
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Pin-On Hydraulic Thumb
Related Videos
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Excavator Loading Brush Into Tub Grinder
Excavator using ACS Hydraulic Thumb and Heavy Duty Bucket to load brush into a tub grinder at a wood recycling facility.
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Rake and Thumb Unloading Brush
Using an ACS Rake, Hydraulic Coupler and Hydraulic Thumb for handling debris.