Kobelco part numbers look like noise until someone shows you the pattern. Once the prefixes and suffixes make sense, a quotation becomes readable at a glance: which assembly the part belongs to, which generation it serves, and whether the number is a complete unit or an internal repair part. This guide decodes the system using real numbers from the live stock list at Guangzhou Shenyue Machinery Technology Co., Ltd. — no invented examples.
The prefix: which assembly family the number belongs to
The opening characters group numbers into families, and each family maps to a type of assembly. The families buyers meet most often on the SK -8 and -10 generations:
| Prefix family | Typical content | Real examples from our stock records |
|---|---|---|
| YN15V… | Swing and travel motor assemblies, 20-ton class | YN15V00037F1 (GM38VB travel, SK200-8); YN15V00077F1 (M5X130 swing); YN15V00083F1 (GM38VC travel, SK200-10 class) |
| YN32W… | Swing reduction assemblies | YN32W00025F1 / YN32W00022F2 / YN32W00019F1 |
| LC15V… | Swing motors, larger class | LC15V00022F1 (M5X180 class, SK330-8 and above) |
| 292…-… (7-digit style) | Hydraulic pump assemblies and major internals | 2924610-0030 (K3V112DT pump assembly); 2924110-0056 (set plate) |
| 8-digit style | Regulator and control assemblies | 29070821-4927 (K3V112 regulator assembly) |
| …D…-00 style | Internal component parts of motor assemblies | 800D2103-00, C800D2016-00 (GM38VB internals) |
Two practical consequences follow. First, a number's prefix tells you what kind of part it is before you look anything up — a YN32W number will never be a travel motor, and a 2924… plate number will never be a complete pump. Second, families do not mix: the repair parts for a GM38VB travel motor (800D2103-00 / YN15V00037R420C, C800D2016-00 / YN15V00037S116) belong to the GM38VB only, and will not serve a GM38VC.
The suffix: revisions and repair levels
- F1 / F2 / F3 mark revision levels of the same assembly. A later revision usually supersedes an earlier one, but we confirm which revision your machine was built with, because we ship what we quote.
- The dash block (-00, -0030, -4927) is a revision or detail code within the 7- and 8-digit families. Two assemblies that differ only in this block can carry different internal details — quote the full number, always.
- R and S code suffixes (as in YN15V00037R420C or YN15V00037S116) identify repair-grade parts inside an assembly family — the pieces a rebuild uses, rather than the assembly itself.
What the numbers do not tell you
The numbering system describes parts, not fitment guarantees. The same assembly number can be listed against several machine models, and within one model name (SK200-6, SK200-8, SK200-10) the assemblies change completely between generations. This is why the ordering sequence at Guangzhou Shenyue Machinery Technology Co., Ltd. always ends at the same place: the machine serial number and the component nameplate photograph are the final authority, and the part number is confirmed against them — never the other way round. For generations and nameplate reading, see our SK generations guide.
Using the numbers to buy faster
- Read the prefix to know what kind of part you are buying — assembly, reduction, internal or repair part.
- Check the suffix so the revision level in the quote matches the machine.
- Search the full number in our part number search, which lists the numbers held against machine compatibility.
- Browse real photos of stocked items in the photo catalog, where each item shows its part number and compatible models.
- Send the nameplate photograph if any doubt remains — it costs nothing and settles the question.
Guangzhou Shenyue Machinery Technology Co., Ltd. has specialised in Kobelco parts since 2007 — 4 warehouses over 1000 m² in Guangzhou, 3,000+ part types on the shelf and 100,000+ part numbers available to order, every quotation stating whether an item is genuine, OEM or aftermarket. Shenyue is an independent supplier and is not an authorized dealer or distributor of Kobelco Construction Machinery Co., Ltd.; genuine Kobelco parts are supplied through original supply channels alongside quality replacement alternatives. For a worked example of the same discipline applied to one assembly, read our GM38VB travel motor guide, and for the whole pump family see the hydraulic components page. Official parts documentation from Kobelco's official site remains the reference for original part data.
Frequently Asked Questions
What does the YN15V prefix mean on a Kobelco part number?
The YN15V family covers swing and travel motor assemblies of the SK -8/-10 20-ton class — for example YN15V00037F1 (Nabtesco GM38VB travel motor on SK200-8) and YN15V00077F1 (M5X130 class swing motor). The suffix F1/F2/F3 marks the revision level of the assembly.
What is the difference between YN15V00037F1, F2 and F3?
They are revision levels of the same GM38VB travel motor assembly; a later revision typically supersedes an earlier one. Guangzhou Shenyue Machinery Technology Co., Ltd. confirms which revision your machine was built with from the nameplate photograph and serial number before quoting.
Is YN32W a travel motor number?
No. YN32W numbers (such as YN32W00025F1, YN32W00022F2 and YN32W00019F1) belong to swing reduction assemblies. Travel motors sit in the YN15V family, and swing motors for SK330-8 class machines and above sit in the LC15V family (LC15V00022F1, M5X180 class).
Can I use GM38VB repair parts in a GM38VC motor?
No. The internal repair parts recorded against the GM38VB family — 800D2103-00 / YN15V00037R420C and C800D2016-00 / YN15V00037S116 — belong to that generation only. GM38VC (YN15V00083F1) is a different generation and the two are not interchangeable.