Digger Arm Attachment
The following specification is written for readers who already have a machine and need to establish fit. It covers construction, interface, hydraulic supply, load position and the service items that follow from each choice.
The backhoe arm, excavator arm, digging boom is read after painting, so the sheet describes the unit that actually reaches the site. Plate flatness and wedge engagement on the digger arm attachment are verified with a straightedge before the coupler is accepted.
A tape check on the delivered backhoe arm, excavator arm, digging boom should reproduce swing at hydraulic swing cylinder. Read swing as hydraulic swing cylinder on the backhoe arm, excavator arm, digging boom when the carrier chart is being checked.
The backhoe arm, excavator arm, digging boom is supplied with its parts list, so each consumable can be picked out without referring back to a photograph. The stability figure of subframe, stabiliser legs on larger versions is written against this digger arm attachment and repeated on the parts list.
Read bucket as toothed digging bucket on the backhoe arm, excavator arm, digging boom: it is a build dimension, not a class average.
The backhoe arm, excavator arm, digging boom leaves the works with its measurement sheet, its parts list and the sign-off record together. The digger arm attachment is captured as one build configuration, and any option that changes the interface is issued as a separate row.
Mass on the backhoe arm, excavator arm, digging boom is kept close to the plate, which holds the load centre inside the chart on a compact carrier. If the carrier differs, the hydraulic circuit row for the digger arm attachment is reissued; the standard entry here is auxiliary flow, multiple services.
The bucket row for this digger arm attachment is toothed digging bucket; it is a measured value, not an estimate. Flow demand for rotating versions of the digger arm attachment is read at full engine speed rather than from pump displacement.
Where the carrier differs from the class described here, the interface rows for the backhoe arm, excavator arm, digging boom are reissued before fabrication. The mounting figure of universal quick-attach plate with subframe is written against this digger arm attachment and repeated on the parts list.
A buyer comparing carriers will find swing entered as hydraulic swing cylinder for this digger arm attachment.
The hydraulic circuit row for this digger arm attachment is auxiliary flow, multiple services; it is a measured value, not an estimate. Read bucket as toothed digging bucket on the backhoe arm, excavator arm, digging boom when the carrier chart is being checked.
The digger arm attachment is written down as one build configuration; any option that alters the interface is issued as its own line on the sheet. Read boom as two-section articulated arm on the backhoe arm, excavator arm, digging boom: it is a build dimension, not a class average.
For the backhoe arm, excavator arm, digging boom, mounting is fixed at universal quick-attach plate with subframe before the mounting interface is drawn. Working width of the backhoe arm, excavator arm, digging boom is matched to gate openings and transport limits before it is matched to engine power.
This digger arm attachment is selected only after the carrier plate has been read, because auxiliary output decides how fast the working element can turn. Inspectors record bucket as toothed digging bucket once the backhoe arm, excavator arm, digging boom has been assembled and painted.
A buyer comparing carriers will find stability entered as subframe, stabiliser legs on larger versions for this digger arm attachment.
The interface drawing for the digger arm attachment states stability as subframe, stabiliser legs on larger versions for the standard build. The digger arm attachment is furnished with a measurement sheet, and each entry can be repeated at the receiving end with ordinary tools.
For this backhoe arm, excavator arm, digging boom the interface drawing shows the plate, the wedge pockets and the hose exit, and all three are measured on the delivered unit. Read swing as hydraulic swing cylinder on the backhoe arm, excavator arm, digging boom: it is a build dimension, not a class average.
The interface drawing for the digger arm attachment states hydraulic circuit as auxiliary flow, multiple services for the standard build. Overall height of the digger arm attachment is read with the tool parked level, not with the arms raised.
Steel grade and plate thickness for the digger arm attachment are recorded on the build sheet, separately from the wear items. Inspectors record stability as subframe, stabiliser legs on larger versions once the backhoe arm, excavator arm, digging boom has been assembled and painted.
For the digger arm attachment, the hydraulic circuit line reads auxiliary flow, multiple services and is verified with a tape or gauge at goods-in.
One line that decides the fit of this digger arm attachment: boom = two-section articulated arm, measured after assembly. Where the host machine differs, the interface rows for the backhoe arm, excavator arm, digging boom are reissued before fabrication begins.
Mass on the backhoe arm, excavator arm, digging boom is kept close to the plate, which holds the load centre inside the chart on a compact carrier. Inspectors record hydraulic circuit as auxiliary flow, multiple services once the backhoe arm, excavator arm, digging boom has been assembled and painted.
Grease points on the digger arm attachment are counted and marked, then transferred to the handover checklist. One line that decides the fit of this digger arm attachment: boom = two-section articulated arm, measured after assembly.
Rotating versions of the digger arm attachment need a flow figure they can receive at full engine speed, not the theoretical pump displacement. Read mounting as universal quick-attach plate with subframe on the backhoe arm, excavator arm, digging boom: it is a build dimension, not a class average.
Read mounting as universal quick-attach plate with subframe on the backhoe arm, excavator arm, digging boom: it is a build dimension, not a class average.
The inspection record for the digger arm attachment names the coupler type, the hose size and the number of independent hydraulic services. The interface drawing for the digger arm attachment states mounting as universal quick-attach plate with subframe for the standard build.
The inspection record for the digger arm attachment lists the coupler type, hose size and the number of independent hydraulic services. Inspectors record boom as two-section articulated arm once the backhoe arm, excavator arm, digging boom has been assembled and painted.
Specification items are set out in the table in the order a workshop would check them. General compact loader ranges appear where useful, but the figures stamped on the carrier are the ones that govern. All of the rows refer to the Digger Arm Attachment shown above.
| Specification row | Works entry | Verification method |
|---|---|---|
| Boom | Two-section articulated arm | Verified during commissioning |
| Bucket | Toothed digging bucket | Measured with a tape |
| Swing | Hydraulic swing cylinder | Checked at goods-in |
| Stability | Subframe, stabiliser legs on larger versions | Measured with a tape |
| Hydraulic circuit | Auxiliary flow, multiple services | Read from the carrier plate |
| Mounting | Universal quick-attach plate with subframe | Confirmed on the interface drawing |
The selection sheet for this backhoe arm, excavator arm, digging boom puts boom at two-section articulated arm; that figure is rechecked on the finished unit.
Start with rated operating capacity and the hydraulic circuit entry of auxiliary flow, multiple services; both are recorded for this digger arm attachment and both can be rechecked on arrival. Coupler size and thread type for the digger arm attachment are named on the same row as the hydraulic supply figure.
The interface sheet lists the coupler size, the number of services and mounting as universal quick-attach plate with subframe for the backhoe arm, excavator arm, digging boom, so the answer is written down before dispatch. One line that decides the fit of this digger arm attachment: stability = subframe, stabiliser legs on larger versions, measured after assembly.
For this digger arm attachment the receiving workshop measures boom against the stated two-section articulated arm with a tape or gauge; no special equipment is needed. The backhoe arm, excavator arm, digging boom is read after painting, so the sheet describes the unit that actually reaches the site.
Wear items are listed apart from the structure on the backhoe arm, excavator arm, digging boom; bucket is recorded as toothed digging bucket so the correct replacement can be identified. Plate flatness and wedge engagement on the digger arm attachment are verified with a straightedge before the coupler is accepted.
Every line in the table has a physical counterpart on the tool. That is the point of publishing a specification in this form: the reader can verify it at delivery with ordinary measuring equipment.
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A short note with the carrier model, flow figure and working material is enough to start. Build photographs, interface dimensions and the circuit requirement come back with the answer, and the workshop handles the technical detail.
