Kobelco SK240-12 · Arm Assembly (Swinghydraulic Crusher & Breaker) · 22 part numbers
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The Arm Assembly (Swinghydraulic Crusher & Breaker) is listed without an exploded view in the SK240-12 catalogue — the parts table below is the authoritative reference, and every part number is confirmed against your machine serial before we quote.
Below is the complete Kobelco SK240-12 Arm Assembly (Swinghydraulic Crusher & Breaker) — 22 part numbers with the quantity fitted per assembly. Where the drawing shows a callout, the Ref. column in the table carries the same number. The list comes straight from the Kobelco SK240-12 catalogue for this machine family.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| YN12B20164F1 | ARM GROUP | ||
| 1 | YN12B21239F1 | LINK, BUCKET | 1 |
| 1 2 - | YN12B02403P1 | BUSHING | 2 |
| 1 3 - | YN12B02405P1 | BUSHING | 2 |
| 2 | YN12B12137P1 | LINK | 1 |
| 3 | YN12B12120P1 | LINK | 1 |
| 4 | YN12B11524P1 | PIN | 2 |
| 5 | YN12B11522P1 | PIN | 1 |
| 6 | YN12B21246P1 | PIN | 1 |
| 7 | HS18C20145G2 | CAPSCREW | 2 |
| 8 | ZN18C20016 | NUT | 4 |
| 9 | 2445R220D4 | SEAL, DUST | 6 |
| 10 | ZG91S02000 | NIPPLE, GREASE | 5 |
| 11 | ZG91S04000 | NIPPLE, GREASE | 2 |
| 12 | B16T0442D57 | SHIM (0.5) | 1 |
| 13 | B16T0442D44 | SHIM (0.9) | 1 |
| 14 | B16T0442D2 | SHIM (1.6) | 1 |
| 15 | YN12B01122D1 | SHIM (0.5) | 2 |
| 16 | YN12B01122D2 | SHIM (0.9) | 2 |
| 17 | YN12B01122D3 | SHIM (1.6) | 2 |
| 18 | YN12B01601D1 | SHIM (2.0) | 4 |
| 19 | YN12B01602D1 | SHIM (2.0) | 2 |
Kobelco SK240-12 excavator part numbers, taken from the machine's own parts catalogue. Items shared with neighbouring machine generations are confirmed from your model plate before quoting.
Structurally, these 22 numbers fall into 6 Kobelco number series — YN12B, B16T, ZG91S among the largest. The list is weighted toward repeated items such as shim, link, pin and 2 hardware positions.
If you are quoting from this group, start with: 2445R220D4 (seal, dust, ×6 per assembly); ZG91S02000 (nipple, grease, ×5 per assembly); ZN18C20016 (nut, ×4 per assembly). The full list follows below.
Swing, travel and implement circuits share the same pump flow on the Kobelco SK240-12, which is why a fault in one function can point back to a component listed in this group. A pressure test narrows the circuit down; the drawing then narrows it to a part number.
Working from the exploded view is the fastest way to order. Find the component on the drawing, note its callout number, and take the matching reference from the table — that mapping removes the guesswork that comes with describing a part over the phone or in an email.
The machine serial number, the part number if you have it, and the symptom. With those three, fitment is confirmed and the quotation follows the same working day. The practical first number to ask for in this group is 2445R220D4.
Yes. Seal items are listed as individual part numbers in the table, so a seal package for one joint can be quoted without buying the whole assembly.
Either. The complete Arm Assembly (Swinghydraulic Crusher & Breaker) can be quoted as a set, or any single part number from the table — both are normal requests from our trade customers.
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View Parts ListKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideRepair guides written from our own workshop notes on the Kobelco SK240-12 — the same components listed on this page, with the failure patterns and part numbers we see most often from trade customers.