Hyrdaulic Excavator | Couplers
Pin Grabber Couplers
PSM pin-grabber couplers provide a host of features for Instant, Independent, and Innovative coupling. Available in both multi-model and OEM-specific models, we offer you the best coupling solution for your excavator. Configurations are available for both 3 and 2-line control circuits depending on machine size. The patented Nexgen configuration allows for instantaneous knuckle reset when an attachment is uncoupled.
The PSM Manual Pin Grabber is a less expensive alternative to Hydraulic Pin Grabbers. Ideal for applications that require less frequent attachments changes. The simple and robust ratchet-driven wedge system allows operators to efficiently change attachments without any hydraulics in the coupler.
specifications
- Wedgelock® Wedge locking principle used for primary lock
- I-Lock Safety Knuckle used for secondary locking on all hydraulic couplers
- Coupler body is constructed from heavy duty steel plate
Wedgelock® technology
PSM pin-grabber couplers use Wedgelock® technology to provide industry-leading ease of use and safety. Cascade, a PSM company, has been the exclusive manufacturer of Wedgelock® in the US for over 20 years.
PSM Innovation
Although Wedgelock® was, at one time, a unique technology, today the rear pin is now retained by wedges using wedgelock technology on all leading couplers. It is the industry standard for safe, reliable, and fast operation.
Built-In Safety
Cascade has continuously improved the PSM pin-grabber coupler with patented technologies. The Nexgen iLock® technology is the latest version using a patented automated front jaw providing automatic locking without a third hydraulic line.
Options
- Hydraulic I-Lock with 2-line control circuit/OEM control circuit uses Nexgen technology to automatically reset the safety knuckle.
- Hydraulic I-Lock with 3-line control circuit
- Hydraulic Tilting
- Multi-model attachment pickup
- Mechanical Manual Operation
- Custom solutions for mixed carrier/attachment pinup
Specifications
| Wedgelock Weight Class | Excavator Machine Weight | Weight (est) | Coupler Base Pin Center (min/max) | Base Width | Pin Ø | WLL (Lifting Eye) |
|---|---|---|---|---|---|---|
| 037 | 2.9–3.7T | 106 lbs | 172/221 mm | 122 mm | 35/40 mm | 4,400 lbs |
| 045-055 | 3.6–5.5T | 143 lbs | 221/264 mm | 145 mm | 45/50 mm | 4,400 lbs |
| 070 | 5.6–7.0T | 187 lbs | 289/312 mm | 165 mm | 45/50 mm | 8,800 lbs |
| 130 | 10.0–13.0T | 429 lbs | 355/420 mm | 218 mm | 60/65 mm | 17,600 lbs |
| 170 | 14.0–17.0T | 682 lbs | 400/465 mm | 280 mm | 70 mm | 17,600 lbs |
| 170 | 14.0–17.0T | 682 lbs | 390/435 mm | 300 mm | 80 mm | 17,600 lbs |
| 210 | 18.0–21.0T | 682 lbs | 430/485 mm | 300 mm | 80 mm | 17,600 lbs |
| 270 | 22.0–27.0T | 880 lbs | 440/512 mm | 300 mm | 80 mm | 22,000 lbs |
| 270 | 22.0–27.0T | 880 lbs | 495/520 mm | 325 mm | 90 mm | 22,000 lbs |
| 320 | 28.0–32.0T | 1,155 lbs | 495/570 mm | 345 mm | 90 mm | 26,400 lbs |
| 320 | 28.0–32.0T | 1,155 lbs | 460/520 mm | 325 mm | 100 mm | 26,400 lbs |
| 320 | 28.0–32.0T | 1,155 lbs | 525/590 mm | 370 mm | 80/90/100 mm | 26,400 lbs |
| 450 | 36.0–45.0T | 1,430 lbs | 570/635 mm | 424 mm | 100 mm | 26,400 lbs |
| 450 | 36.0–45.0T | 1,496 lbs | 540/630 mm | 399 mm | 100/110 mm | 26,400 lbs |
| 750 | 55.0–75.0T | OEM | specifications | —- | —- | 33,000 lbs |
| 1000 | 80.0–120.0T | OEM | specifications | —- | —- | 33,000 lbs |
2-line PSM Pin-Grabber Coupler Operations Video
We are working on a new video, so the 2-Line video will be available early February 2026. We apologize for the inconvenience.
3-line PSM Pin-Grabber Coupler Operations Video
Application Photos
Downloads
Links to I-Lock coupler documentation downloads:
I-Lock Couplers Operators Manual
I-Lock Couplers Install Manual V4
Coupler Technical Documents
How to install Spring and Shaft
Field Service Coupler Cylinder Relief Valve
Retrofit Timer Wiring Instructions
Links to Related Documents
Warranty
Cascade new products are warrantied for 12 months or 2000 hours, whichever comes first, following date of installation. This includes all attachments, hose reels, forks and service parts
Cascade will repair or replace, at its option, any part that a Cascade inspection reveals to be defective in materials or workmanship.
To preserve Cascade’s Warranty, Dealers and Customers must carefully follow applicable Cascade Installation Instructions, Service Manuals and Operator Guides when maintaining and operating Cascade equipment.
To view the full warranty and instruction guide for receiving warranty and technical assistance visit our Warranty Page
