Direct answer: Match an excavator attachment with both carrier specifications and interface measurements. Ton class is only the first filter; pin diameter, pin centers, internal width, hydraulic GPM/PSI, case-drain needs, and the machine’s lift chart must also agree.
Reviewed July 9, 2026. The product examples below use specifications already published on the linked Cliffhouse Buildings product pages.
Measure the attachment interface
- Pin diameter: measure across the widest part of the pin with a suitable caliper.
- Pin center-to-center: measure from the center of the front pin to the center of the rear pin.
- Internal width: measure the clear distance between the attachment ears or the receiving width stated for the coupler.
- Pin length and retention: confirm overall pin length, usable length, and the retaining method.
- Geometry: compare the stick, linkage, lug profile, and coupler instructions—not just the excavator model name.
For replacement pins, record the diameter and overall length of the existing part, then compare the available sizes on the excavator pin page.
Hydraulic attachment checklist
| Check | Why it matters | What to record |
|---|---|---|
| Carrier class | Provides the first size and stability filter | Machine operating weight and model |
| Auxiliary flow | Motor speed and heat depend on the correct range | Available GPM at the attachment circuit |
| Auxiliary pressure | Pressure above the published limit can damage components | System and attachment PSI limits |
| Case drain | Some motors require a low-pressure return directly to the reservoir | Whether a dedicated third line exists and its size |
| Attachment weight | Affects stability and working radius | Attachment weight and the machine lift chart at the intended reach |
| Hoses and couplers | Connection type, size, routing, and protection must agree | Thread/coupler type, hose length, and connection count |
Representative fitment examples
| Model | Carrier class | Hydraulics or interface | Working specification | Critical check |
|---|---|---|---|---|
| TMG-EFM32 flail mower | 3–5 ton | 10–16 GPM; 2,900 PSI | 32-in width; 2-in material | Dedicated 3/8-in case-drain line required |
| TMG-EFM40 flail mower | 6–8 ton | 16–21 GPM; 2,900 PSI | 40-in width; 2-in material | Dedicated 3/8-in case-drain line required |
| TMG-EQC07 coupler | 4–7 ton | 2-in pin; 9-in centers; 6-in internal width | Direct fit listed for TMG-ECP41, TMG-HB70Q, and TMG-EPD700 | Measure all three interface dimensions |
Information to send for a fitment check
- Excavator manufacturer, model, year, and operating weight
- Pin diameter, center-to-center distance, and internal width
- Photos of the stick, linkage, pins, existing bucket or coupler, and hydraulic connections
- Auxiliary flow and pressure from the machine manual
- Case-drain availability and hose/coupler details
- The attachment model and the intended application
Need help checking a match? Send Cliffhouse Buildings the details above, or browse excavator attachments.