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For work plans that require repeated changes between confirmed compatible attachments.
HYDRAULIC QUICK COUPLER
Hydraulic Quick Coupler for 1–45 Ton Excavators
KRATOR Hydraulic Quick Couplers are available for excavators from 1 to 45 tons. Each coupler is matched according to the excavator model and mounting dimensions, with a hydraulic safety lock valve included in the configuration.
QUICK ANSWER
What is a hydraulic quick coupler?
A hydraulic quick coupler allows an excavator to change compatible attachments through a hydraulically operated locking system. This KRATOR configuration is available for 1–45 ton excavators, uses a stated system working-pressure range of 250–350 bar and includes a hydraulic safety lock valve. Final selection still requires the excavator model, pin diameter, center distance and arm width.
VERIFIED DATA
Key Product Specifications
Only supplied technical values are published. Other dimensions and performance values are confirmed before quotation.
| Parameter | Specification |
|---|---|
| Product Type | Hydraulic Quick Coupler |
| Suitable Excavator | 1–45 ton |
| System Working Pressure | 250–350 bar |
| Safety Configuration | Hydraulic Safety Lock Valve |
| Matching Information — Method | Excavator model and mounting dimensions |
| Matching Information — Required Dimensions | Pin diameter, center distance and arm width |
Product weight, oil flow, opening width, pin diameter, dimensions, cycle time, material grade, warranty, delivery time, stock, price, model codes and locking force: confirm before quotation.
APPLICATIONS
Main Applications
This coupler supports planned attachment changes after compatibility has been checked.
Buckets and Attachments
For switching between compatible buckets and attachments after mounting dimensions and locking geometry are checked.
Construction and Earthmoving
For excavator fleets that need a hydraulically operated coupler within the verified carrier range.
Demolition Changes
For changing compatible demolition attachments according to the machine, hose, control and pressure arrangement.
Fleet and Dealer Matching
For matching a coupler to a defined excavator and a documented set of buckets or attachments.
Bucket and attachment compatibility must be confirmed from mounting dimensions and locking geometry. Compatibility is not automatic.
LOCKING CONFIGURATION
Hydraulic Safety Locking
- Hydraulic operation
- Hydraulic safety lock valve included
- Final hose and control arrangement matched to the excavator
- Final pressure arrangement matched to the excavator
The valve is part of the supplied configuration, but it does not remove the need for correct installation and operating checks. Locking engagement must be visually and operationally confirmed according to the operating procedure.
No undocumented valve construction, bypass method or pressure-adjustment instruction is stated on this page.
MODEL MATCHING
How to Match the Coupler
Use the machine and attachment data below before a final selection is made.
- 01
Send excavator brand and model
Identify the carrier that will use the coupler.
- 02
Confirm operating weight
Confirm that the machine is within the 1–45 ton range.
- 03
Measure the mounting points
Record pin diameter, center distance and arm width.
- 04
Confirm interchange requirements
List the buckets and attachments that must interchange.
Measurement checklist
- Front pin diameter
- Rear pin diameter where different
- Pin center distance
- Dipper-arm width
- Bucket-ear width where needed
- Current coupler details where applicable
SIZE COVERAGE
Hydraulic Quick Couplers for Different Excavator Sizes
The verified range covers excavators from 1 to 45 tons. Tonnage is the starting range; final matching also requires the excavator model and mounting dimensions.
Mini Excavators
A hydraulic quick coupler for mini excavators must still be checked against pin and arm dimensions.
Compact Excavators
A hydraulic quick coupler for compact excavators is selected from the machine and mounting data.
Medium Excavators
A hydraulic quick coupler for medium excavators requires the same dimensional and locking-geometry confirmation.
Excavators up to 45 Tons
Hydraulic quick couplers for excavators up to 45 tons remain subject to model and mounting-dimension matching.
QUOTE CHECKLIST
Information Required for Quotation
- Excavator brand
- Excavator model
- Operating weight
- Pin diameter
- Center distance
- Arm width
- Attachment or bucket information
- Quantity
- Destination country and port
- Photos of the arm end
- Photos of existing bucket ears
PRODUCT VIEW
Product Image and Structure Overview
The supplied image shows the full hooks, pins and locking structure without cropping. Final mounting dimensions are matched to the excavator.
What to confirm from the machine
- Excavator model and operating weight
- Front and rear pin diameters
- Pin center distance
- Dipper-arm width
- Bucket-ear width where needed
- Hose, control and pressure arrangement
FAQ
Hydraulic Quick Coupler FAQ
Verified answers about carrier range, pressure, safety configuration and model matching.
What excavator sizes can use this Hydraulic Quick Coupler?
The verified suitable excavator range is 1–45 ton. Tonnage is an initial range only; the excavator model and mounting dimensions must still be confirmed.
What is the stated system working pressure?
The stated system working-pressure range is 250–350 bar. The final hose, control and pressure arrangement must match the excavator.
Does the coupler include a hydraulic safety lock valve?
Yes. A hydraulic safety lock valve is included in this configuration. Locking engagement must still be visually and operationally confirmed according to the operating procedure.
Is excavator tonnage enough to select a coupler?
No. Tonnage is the starting range. Final selection also requires the excavator model, pin diameter, center distance, arm width and the attachments that need to interchange.
What measurements are needed before quotation?
Send the front pin diameter, rear pin diameter where different, pin center distance, dipper-arm width and bucket-ear width where needed.
Can one coupler work with every bucket?
Not automatically. Bucket and attachment compatibility must be confirmed from mounting dimensions and locking geometry.
Can the coupler be matched to an existing attachment fleet?
It can be evaluated for fleet matching after the excavator data and the mounting dimensions and locking geometry of the existing buckets and attachments are provided.
What information should I send for a model recommendation?
Send the excavator brand, model, operating weight, pin diameter, center distance, arm width, attachment or bucket information, quantity, destination country and port, plus photos of the arm end and existing bucket ears.
RELATED OPTIONS
Related Products
MODEL MATCHING
Send Your Excavator and Mounting Data
Share the machine model, operating weight, pin dimensions, arm width and the attachments that need to interchange.