The 21-tonne Kobelco family is where most parts-ordering mistakes happen, because three machine designations — SK210-8, SK210LC-8 and SK225LC-8 — look like variations of one machine and are quoted as if they were. They share an engine family, a pump family and most of the upper structure. They do not share every undercarriage number, every counterweight, or every attachment number, and the suffixes that distinguish them are exactly the ones that change what is bolted to the ground and to the front end. Guangzhou Shenyue Machinery Technology Co., Ltd. has supplied this family since 2007, and this guide sets out where the three genuinely diverge.
What the suffix actually tells you
On Kobelco machines the trailing letters are not marketing trim; they describe the undercarriage and the intended duty. An LC designation indicates a long undercarriage, which lengthens the track frame, changes the number of lower rollers, and alters the sprocket and idler position relative to the machine. A higher number in the same band — 225 against 210 — usually indicates a heavier operating weight class with a correspondingly different attachment and counterweight. Read the suffix as a specification, not as a variant name, and the parts list stops looking interchangeable.
| Item | Common across the 21 t family | Where the suffix decides |
|---|---|---|
| Engine | HINO J05E family | Ratings and emission hardware |
| Hydraulic pump | K3V112DT family | Regulator setting and control curve |
| Travel motor | Nabtesco GM38VB class | Assembly number by build |
| Track frame and rollers | Not shared with LC variants | LC changes length and roller count |
| Counterweight | Not shared across the band | Weight class decides |
| Boom and arm | Not shared across the band | Length and thickness vary |
The numbers that do carry across the band
The drivetrain is the reassuring part. The HINO J05E engine family is shared, and the hydraulic pump belongs to the K3V112DT family, whose pump assembly is quoted as 2924610-0030 / YN10V00005S156 with set plate 2924110-0056 / LC10V00010S153 and regulator assembly 29070821-4927 / YN10V01006F2. The travel motor on this class is the Nabtesco GM38VB, whose assembly numbers are confirmed as YN15V00037F1, YN15V00037F2 and YN15V00037F3. Those numbers are firm, because they belong to the component family rather than the machine designation. Note the boundary clearly, though: the later GM38VC travel motor fitted to SK200-10 and SK210-10 machines carries a different assembly number and is not interchangeable with the GM38VB — a mistake that costs a machine its travel drive for a week.
The numbers the suffix controls
Undercarriage is where the long-carriage designation bites. Track frame length, roller quantity, idler position and sprocket relationship all change with LC, and quoting a standard-carriage part for a long-carriage machine produces a return, not a repair. Attachment geometry changes with the weight class in the same way: boom and arm sections, bucket linkage and pin and bushing sizes all follow the machine, and the pin and bushing sets in particular are a common wrong-order item because the linkage looks identical on the drawing. On our list the SK210 model page covers the class and the SK250 model page covers the neighbouring band, while undercarriage lines such as the arm bushing LC12B02199P1 and the idler shaft VA32F2303402 sit in the undercarriage and cylinders range.
How to order across the family without guessing
Three items settle almost every ambiguity. The machine plate gives the full model designation including the suffix and the serial number, which is what the parts catalogue is indexed by. The component nameplate on the part you are replacing gives the assembly number as built, which catches supersessions. And a photograph of the part in place settles linkage and mounting differences that no number describes well. Where a number cannot be confirmed from our records, the honest answer is to quote it as commonly quoted and treat the nameplate as the authority — that is how Guangzhou Shenyue Machinery Technology Co., Ltd. handles these inquiries rather than guessing at a suffix.
How we supply
Guangzhou Shenyue Machinery Technology Co., Ltd. has specialised in Kobelco since 2007, with 4 warehouses over 1000 m² in Guangzhou, 3,000+ part types on the shelf and 100,000+ part numbers available to order through original supply channels. Shenyue is an independent supplier and is not an authorized dealer of Kobelco Construction Machinery Co., Ltd.; for Kobelco, Hino, Isuzu, Yanmar, Cummins, Kawasaki, Nabtesco, KYB and KPM we supply genuine parts ordered through original supply channels alongside quality replacement alternatives, at prices close to agent level, and the five brands we hold formal authorization for — Mitsubishi, Garrett, TONGMYUNG, Marusan and NIKURA — are named on every quotation. Use the part number search to check a number before you send it, or send it to the team directly and have it confirmed against the machine plate. Published Kobelco model history is a useful cross-reference when a designation must be pinned to a generation.
Frequently Asked Questions
Is an SK210-8 the same machine as an SK200-8 for parts?
Partly. They share the HINO J05E engine family, the K3V112DT pump family and the Nabtesco GM38VB travel motor class, so the drivetrain numbers largely carry across. Undercarriage, attachment and counterweight numbers do not, and those are decided by the machine designation and serial rather than by the band.
What does the LC suffix change on an SK210LC-8?
The long undercarriage: track frame length, the number of lower rollers, and the position of the idler and sprocket relative to the frame. Quoting standard-carriage undercarriage parts for an LC machine produces a wrong part, so the plate with the LC designation is the first thing to send.
Why did my bucket pin and bushing set not fit my SK225LC-8?
Because linkage and pin sizes follow the weight class, not the family name. Boom and arm sections, bucket linkage and pin and bushing dimensions change between the 21 and 22 tonne designations even though the linkage looks the same on a drawing. Measure the pin diameter and send a photograph of the linkage.
How can I be sure which of the family numbers applies to my machine?
Send the machine plate with the full designation and serial, the component nameplate of the part being replaced, and a photograph of it in place. Guangzhou Shenyue Machinery Technology Co., Ltd. confirms which numbers are family-wide and which are suffix-specific, and marks any number that cannot be confirmed as commonly quoted until the nameplate is checked.