The SK350LC-8 is normally described as "the SK350-8 with a longer undercarriage", and mechanically that is fair: the upper structure, engine bay and hydraulic system stay in the same big-class family. For a parts buyer, though, the LC suffix has consequences that go far beyond a longer track frame, because every ground-engaging component is sized differently and wears on a different curve. Guangzhou Shenyue Machinery Technology Co., Ltd. quotes long-crawler enquiries every week, and the recurring mistake is always the same shape: 20-ton-class numbers ordered because they "look similar", followed by the discovery that a 35-ton class machine consumes parts on a different scale entirely.
What the LC suffix actually changes
LC stands for long crawler. Compared with the standard SK350-8, the LC machine carries a longer track frame and therefore more ground-engaging parts — more track links per chain, additional lower rollers, and idlers and sprockets sized for a heavier gross weight. On site the payoff is stability: a longer, wider stance lifts more over the side and rides soft ground better, which is why long-crawler machines dominate pipeline, road and drainage work where the machine has to reach out and hold a load.
The trade-off is wear. More links, more rollers and more shoe area mean more parts to replace when the undercarriage reaches the end of its life — and that day arrives sooner because the machine usually works heavier. The industry rule of thumb is that the undercarriage accounts for roughly half of an excavator's lifetime parts spend; on a long-crawler machine, expect that share to hold at the top of the range rather than fall.
What does not change: the upper structure stays big-class
Ordering hydraulic or engine components for an SK350LC-8 does not move you into a new class — but it certainly does not let you shop in the 20-ton aisle. The reference points we confirm against, machine by machine:
| System | SK350LC-8 class | Do not substitute from the 20-ton class |
|---|---|---|
| Main hydraulic pump | K5V140 class | K3V112DT belongs to SK200-8 (assembly 2924610-0030 / YN10V00005S156) |
| Swing motor | M5X180 class, quoted as LC15V00022F1 | M5X130 class numbers YN15V00077F1 / YN15V00055F1 / YN15V00035F1 |
| Travel drive | Big-class travel assembly — confirmed from the nameplate | GM38VB (YN15V00037F1 / F2 / F3) is the SK200-8 generation unit |
| Engine family | HINO J08E family | J05E is the SK200-8 engine; the two families do not share service items |
| Undercarriage | Long crawler — more links, rollers and shoe area | Standard-crawler numbers and narrower shoes |
Treat that table as a class map, not a parts list. The suffix on the nameplate is the authority: our stock records for the SK350 class carry items such as water pump VH16100E0770, turbocharger 789003-5009S / VH17201E0433 and EGR valve gasket VH25634E0020, all logged against J08-family applications — and some of those records are tagged to later-era machines. That is exactly why the engine serial number, not the model year, decides which suffix you need.
Undercarriage quoting: photographs beat part numbers
Track chains, rollers, idlers and sprockets for a long-crawler machine cannot be quoted from the model name alone, because the same SK350LC-8 was built with different shoe widths and undercarriage builds over its production life. The quoting data is physical, and it takes about five minutes to collect:
- The machine data plate — model and full serial number.
- The shoe width, measured across the plate, in millimetres.
- The link count on one chain, counted at the pins.
- A photograph of the undercarriage plate or the stamping on the track frame.
- Wear measurements — link height, roller diameter, idler and sprocket condition.
Consumables, filters and the yearly parts rhythm
On an LC machine the consumable package is heavier than owners expect, because the machine works longer shifts in reach-and-hold applications: hydraulic and engine filters, water separators, cooling system service and hydraulic oil volume all scale up. Buying filter sets in the machine's own family — rather than the "close enough" equivalent — is the cheapest reliability decision available, and it is the one most often skipped when a fleet runs several excavator classes side by side.
Guangzhou Shenyue Machinery Technology Co., Ltd. has specialised in Kobelco parts 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. Every quotation states the grade of each line — genuine, OEM-quality or aftermarket — and Shenyue is an independent supplier, not an authorized dealer or distributor of Kobelco Construction Machinery Co., Ltd. Where a brand is formally authorized — Mitsubishi, Garrett, TONGMYUNG, Marusan and NIKURA — the authorization is stated on the quote. Browse the class coverage on the SK350LC model page and the undercarriage and cylinders category, compare the class split in our SK330-8 / SK350-8 parts guide, and check any reference in the part number search. Manufacturer data for the machine itself is published by Kobelco.
Frequently Asked Questions
What does the LC suffix mean on a Kobelco SK350LC-8?
LC stands for long crawler. Compared with the standard SK350-8, the LC machine has a longer track frame with more track links, additional lower rollers and idlers and sprockets sized for a heavier gross weight. The upper structure and hydraulic system stay in the same big-class family.
Do SK200-8 parts fit an SK350LC-8?
No. The 20-ton class uses the K3V112DT pump (assembly 2924610-0030 / YN10V00005S156) and the M5X130 swing motor (YN15V00077F1 / YN15V00055F1 / YN15V00035F1), while the SK350LC-8 class runs the K5V140 pump class and the M5X180 swing motor quoted as LC15V00022F1. Guangzhou Shenyue Machinery Technology Co., Ltd. confirms every line against the machine nameplate and serial number.
What information do I need for an SK350LC-8 undercarriage quote?
Five items: the machine data plate (model and full serial number), the shoe width measured in millimetres, the link count on one chain, a photograph of the undercarriage plate or track-frame stamping, and wear measurements for link height, roller diameter, idler and sprocket. With that set, Guangzhou Shenyue Machinery Technology Co., Ltd. can quote the full group or only the items that need replacing.
Which engine family does the SK350 class use?
The SK350 class is recorded against the HINO J08E family — for example water pump VH16100E0770, turbocharger 789003-5009S / VH17201E0433 and EGR valve gasket VH25634E0020 in our stock records. The J05E engine used in the SK200-8 does not share these service items, so the engine serial number decides the correct suffix.