Quick Caterpillar Cat 307, 308 attachment 20t Excavator Double Lock Quick Hitch Quick Coupler Hydraulic Quick Couple Excavator Mechanical Quick Coupler Quick Hitachi

Different Types of Quick Couplers
Quick couplers for excavators are designed to simplify the process of changing attachments, increasing efficiency, and reducing downtime. There are two primary types of quick couplers: mechanical and hydraulic. Each of these has its advantages and specific applications in the field.
Manual Quick Couplers

A common choice for budget-conscious operators, Manual Quick Couplers come in a variety of styles but generally involve manually entering or removing a pin to lock the bucket in.
This is commonly referred to as a manual “pin-puller” coupler – where the front of the coupler is an open slot that you can hook on a bucket, and the rear is a dedicated pin hole that you fix you attachment to. This retains the breakout force while still improving your efficiency.
These are generally significantly cheaper than Mechanical or fully Hydraulic Quick Couplers while still offering an increase in efficiency, but you're still working with adding and removing pins to swap attachments out.
You'd be surprised at how much of a difference it makes compared to direct mounting every single attachment though – it really is a big quality of life increase.
DOPRO makes a great manual quick coupler for mini excavators if this is all you need, check it out:

Mechanical Quick Couplers
Mechanical quick couplers rely on manual force and physical locking mechanisms to secure attachments. These couplers typically involve a pinning system, where pins securely connect the attachment to the coupler. Mechanical quick couplers can either be universal or dedicated, with the former being more adaptable to different attachments.
Some advantages of mechanical quick couplers include:
Lower initial cost compared to hydraulic couplers
Less maintenance, as there are fewer moving parts
Simpler design, making them easily replaceable

Hydraulic Quick Couplers
Hydraulic quick couplers, as the name suggests, use hydraulic power to secure attachments to the excavator. Hydraulic couplers can also be universal or dedicated, offering the same versatility in attachment compatibility. These couplers are designed to provide a more convenient and efficient method of changing attachments compared to their mechanical counterparts.
Advantages of hydraulic quick couplers include:
Fast and easy attachment changes from within the cab
Increased safety due to reduced manual handling
Ability to handle high-pressure applications,

Whether excavator operators choose mechanical or hydraulic quick couplers, the ultimate goal is to expedite the process of changing attachments and to maximize productivity on the job site. The right choice will depend on the specific needs of the operation and the types of attachments typically used by the excavator.
We have a great Hydraulic Quick Coupler . There's a video on the product page that's worth watching to understand how the mechanics function internally.

Tilting Quick Couplers
These are newer on the market, but companies are starting to make Tilting Quick Couplers. These are very expensive, but drastically increase efficiency by not having to reposition your machine to change angles or digging directions.
All Tilting Quick Couplers must be, by definition, Hydraulic quick couplers as well — since the tilt functionality operates off of hydraulic pressure. So think of Tilting quick couplers as an upgrade to a hydraulic quick coupler.
DOPRO once again has a Tilting Quick Coupler that we carry, and again I highly recommend just watching the video to see how it works since it’s significantly easier to understand that way

Advantages and Disadvantages of Excavator Quick Coupler Types
Pros of Quick Couplers
Quick couplers provide many benefits to operators, greatly improving the versatility of excavators. One of the significant advantages of using quick couplers is the ease of changing buckets and attachments. By facilitating the process of attaching and detaching equipment, quick couplers increase work efficiency by saving time and labor.
Two primary types of quick couplers are available in the market: hydraulic and mechanical. Hydraulic couplers offer convenience and efficiency, as they allow operators to change attachments rapidly without leaving the cab. This can boost productivity by minimizing interruptions and downtime.
Moreover, quick couplers can enhance safety on the job site. High-quality couplers possess safety features, such as locking mechanisms that prevent the accidental release of attachments, decreasing the chance of accidents.