A custom mount is not a place to guess. If the pin centers are off, the ears are too narrow, or the coupler style is misunderstood, a productive attachment can sit on the ground while the crew waits. Knowing how to order custom mounts starts with one goal: give the supplier enough accurate machine and attachment information to build a fit that is ready to work when it arrives.
For demolition, excavation, utility, and sitework contractors, the mount is more than steel between an attachment and an excavator. It affects attachment control, breakout force, clearance, hose routing, and safety. Get it right upfront, and you avoid field modifications, rushed welding, damaged pins, and lost production.
Start With the Machine, Not the Attachment
The attachment may be the tool you need for the job, but the host machine determines the mount. Start by identifying the excavator make, model, serial number, operating weight, and boom configuration. A machine model alone can be helpful, but it does not always tell the full story. Stick length, linkage arrangement, factory options, and prior modifications can change the dimensions that matter.
Tell the supplier whether the attachment will mount directly to the stick or through a quick coupler. This is one of the most common points of confusion. A mount built for a pin-on connection will not automatically fit a coupler, and an adapter made for one coupler brand or series may not match another.
If you run a quick coupler, provide the coupler manufacturer, model, serial number when available, and clear photos of the pickup area. Include the coupler’s required pin diameter and center-to-center spacing. If the coupler uses a dedicated interface rather than standard pin geometry, that detail drives the entire design.
A dependable supplier will ask questions before quoting. That is not delay or red tape. It is how you prevent a mount from arriving close, but not correct.
How to Order Custom Mounts: Measure What Matters
Accurate measurements are the backbone of a custom mount order. Take measurements from the actual machine or coupler that will run the attachment, not from a similar unit in the yard. Wear in the bores, replacement pins, and aftermarket couplers can all change the fit.
Use calipers, a tape measure, or a machinist’s scale appropriate for the dimension. Photograph the measurement as you take it whenever possible. A photo with the tape in place gives the fabricator a second way to verify what the number means.
For most excavator pin-on mounts, you will need the following information:
- Pin diameter for both the stick pin and link pin
- Pin center-to-center distance
- Inside ear width at the stick connection
- Inside ear width at the linkage connection
- Pin boss width or outside width, if applicable
- Distance from the stick pin center to the attachment’s working edge or mounting face
The first four dimensions typically establish whether the attachment can physically connect. The remaining measurements help confirm clearance, geometry, and load placement. A mount can slide onto the pins yet still create a bad working angle, interfere with the linkage, or place the attachment too far from the machine.
Do not estimate worn pin diameter by looking at it. Measure it. A few millimeters of error can mean excessive slop, accelerated bore wear, and a mount that pounds itself loose under a hammer, shear, or pulverizer.
Send Photos From the Right Angles
Photos save time when they show the right details. Take one straight-on view of the stick end, one side view of the linkage, one top view of the coupler or pin area, and close-ups of any casting marks or ID plates. Show the hose routing area if you are ordering a hydraulic attachment.
Keep the machine on level ground, lower the boom safely, and follow your company’s lockout and attachment-handling procedures before measuring. No mount order is worth putting a technician in a pinch point.
Match the Mount to the Work You Actually Do
A mount should be designed around the attachment, the carrier, and the job. That means the cheapest option is not always the right option, especially when the attachment will see high-impact demolition work.
A hydraulic hammer mount has different demands than a screening bucket mount. A concrete pulverizer or rotating grapple may need attention to hose protection, rotation clearance, and the added load created by the attachment’s operating position. A fixed ripper may be simple in appearance but still needs proper ear plate thickness, pin fit, and geometry to handle repeated breakout forces.
Share the attachment make, model, weight, and intended use. If it is a used attachment, include photos of its existing bracket or mounting pad. If it is a bare attachment that needs a complete custom bracket, provide every available spec sheet and measurement.
Be direct about the work. Say whether the attachment will be used for bridge demolition, utility trenching, land clearing, material handling, concrete processing, or general excavation. The right build depends on duty cycle. A mount that is acceptable for occasional light cleanup may not hold up under daily production demolition.
There are trade-offs. A heavier mount can add strength and service life, but it also adds weight and may reduce payload or digging performance. An adapter can let one attachment work across more than one machine, but it may push the tool farther from the stick and change the machine’s effective reach. The right answer depends on whether flexibility or maximum production on one carrier matters more.
Confirm Hydraulic and Mechanical Clearances
If the attachment has hydraulic functions, the mount order needs more than pin dimensions. Confirm the number of hydraulic circuits, hose sizes, fitting types, operating pressure, and required flow. A custom mount may need hose guards, clamps, routing holes, or protected paths that keep hoses away from the stick, coupler, and moving linkage.
Ask where the auxiliary ports sit on the machine and whether the attachment uses a case drain, return line, rotation circuit, or electrical connection. A rotating shear or grapple can require a different setup than a one-way hammer. Assuming every attachment runs on standard auxiliary hydraulics is how crews end up changing fittings or rerouting hoses in the field.
Clearance matters just as much. The attachment should be able to curl fully without striking the stick, coupler, cylinder, hoses, or cab area. It also needs enough room to change pins and perform routine service. If a mount makes grease fittings inaccessible, the problem will show up later as wear and downtime.
Review the Quote Before Fabrication Starts
Before approving the order, review the quote and drawing details line by line. Confirm the carrier machine, coupler type, attachment model, pin dimensions, mount style, material specification, lead time, and shipping destination. Make sure everyone is using the same terms. “Pin-on,” “quick-coupler ready,” and “adapter bracket” are not interchangeable descriptions.
Ask what is included. Does the order include pins, retainers, bushings, hose guards, mounting hardware, or only the fabricated bracket? Will the mount arrive painted, ready to pin on, or does it require welding to the attachment? These details affect the real cost and the time needed before the tool reaches the jobsite.
For a critical project, tell the supplier the required delivery date and job location early. Freight access, unloading equipment, and the size of the finished mount can affect delivery planning. A mount that arrives on time but cannot be safely unloaded is still a delay.
EFI Demolition Equipment helps contractors sort out custom mounts and pins around the machine and attachment they are actually running. The focus is straightforward: verify the fit before steel is cut, then get the equipment moving toward the job.
Inspect the Mount When It Arrives
Before putting the attachment into production, inspect the mount against the approved specifications. Check pin diameters, ear spacing, bore condition, weld quality, hose protection, and overall clearance. Install it carefully and cycle the attachment through its full range of motion at low speed before working under load.
Look for contact points, hose stretch, unusual pin play, or interference at full curl and dump. Grease all points, torque any required hardware, and keep the approved dimensions with the machine records. That paperwork makes future attachment changes faster and gives your maintenance team a reliable reference.
A proper custom mount is a small part of the machine package, but it carries a big share of the load. Bring accurate measurements, clear photos, and an honest description of the work. That is how you get a mount that fits the first time and keeps the crew producing when the schedule is tight.