Kobelco SK260LC-12M · 3.1M Arm (Rock Spec, Hydraulic Breaker) · 10 part numbers
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The 3.1M Arm (Rock Spec, Hydraulic Breaker) is listed without an exploded view in the SK260LC-12M catalogue — the parts table below is the authoritative reference, and every part number is confirmed against your machine serial before we quote.
10 separately orderable part numbers make up the 3.1M Arm (Rock Spec, Hydraulic Breaker) on the Kobelco SK260LC-12M. Take the callout number from the drawing and match it in the Ref. column below. The list comes straight from the Kobelco SK260LC-12M catalogue for this machine family.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| LB12B00302F1 | ARM, 3.1M | ||
| 1 | LB12B00303F1 | ARM | 1 |
| 1 1B - | LB12B01632P1 | BUSHING | 2 |
| 1 1C - | LC12B01763P1 | BUSHING | 2 |
| 1 1D - | LQ12B01843P1 | BUSHING | 2 |
| 1 2A - | YN12B21219P1 | BLOCK, TAPPED | 2 |
| 1 2B - | YN02B11189P1 | BLOCK, TAPPED | 4 |
| 2 | 2445R220D6 | SEAL, DUST | 2 |
| 3 | 2445R220D4 | SEAL, DUST | 2 |
| 4 | 2445R138D24 | SEAL, DUST | 2 |
Part numbers as fitted to the Kobelco SK260LC-12M excavator. Where a position changed during the production run, the serial number settles which one applies to your machine.
Read as a dataset, the 10 part numbers spread across 6 number series (LB12B, 2445R, LC12B being the biggest) Expect repeated items such as bushing, seal, dust and 3 seal and O-ring positions when you work through it.
The high-quantity positions are: YN02B11189P1 (block, tapped, ×4 per assembly); LB12B01632P1 (bushing, ×2 per assembly); LC12B01763P1 (bushing, ×2 per assembly). The full list follows below.
Every hydraulic item we quote is declared by condition: genuine, ordered through original supply channels, or a quality OEM alternative. The declaration appears on the quotation itself, never buried in an invoice, so you know exactly what you are fitting before you commit.
The 3.1M Arm (Rock Spec, Hydraulic Breaker) group on the Kobelco SK260LC-12M contains 10 separately orderable part numbers, all listed in the table below with the quantity fitted per assembly. Every number in the table is a real Kobelco part number taken from the machine's own parts catalogue, not a generic cross-reference.
It is the quantity fitted per assembly in the catalogue — useful when a job calls for more than one of the same part, such as O-rings fitted in a pack. If that matches your case, quote YN02B11189P1 and we will take it from there.
Both. Every quotation states the condition of each item — genuine through original supply channels, or a quality OEM alternative — so the choice is yours and it is documented.
We quote new components from this table — genuine or OEM by declaration — rather than exchange units, so you know exactly what is being fitted.
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View Parts ListKobelco SK260LC-12M workshop guide
Read the guideKobelco SK260LC-12M workshop guide
Read the guideKobelco SK260LC-12M workshop guide
Read the guideRepair guides written from our own workshop notes on the Kobelco SK260LC-12M — the same components listed on this page, with the failure patterns and part numbers we see most often from trade customers.