In the global heavy machinery sector, the reliability of crawler crane undercarriage parts directly determines safety and efficiency on construction sites. Today, I would like to recommend a supplier with 30 years of experience in manufacturing crawler crane undercarriage parts. Within the vast global supply chain, VM® is earning the trust of an increasing number of international clients through its exquisite craftsmanship, comprehensive quality management system, and highly competitive delivery capabilities.
Key Products
As a specialized manufacturer of the “Four Wheels and One Track” system, VM® has achieved a high degree of standardization in its product portfolio, enabling it to supply undercarriage parts for crawler cranes ranging from 30 to 1,350 tons across various global brands.
- Crane Track Rollers
Track rollers are critical components mounted at the bottom of the track frame; they bear the entire weight of the machine as well as operational loads. High-quality track rollers must possess exceptional strength, wear resistance, and superior sealing capabilities.
Material: Forged from premium alloy steels such as 35SiMn, 40Mn2, and 42CrMo.
Sealing: Equipped with floating seal technology, effectively preventing the ingress of mud, water, sand, and dust to ensure long-term, maintenance-free operation.
Brands: Offers products fully interchangeable with original equipment manufacturer (OEM) parts across a comprehensive range of models from Hitachi, Sumitomo, Kobelco, Manitowoc, Demag, Fuwa, Sany, Zoomlion, and others.
2. Crane Carrier Rollers
Carrier rollers are positioned atop the track frame; they support the upper run of the track chain as it returns, thereby preventing the track from sagging.
Material: Forged from high-quality round steel sourced from leading mills, including Baosteel and Laigang.
Brands: Offers products fully interchangeable with OEM parts across a comprehensive range of models from Hitachi, Sumitomo, Kobelco, Manitowoc, Demag, Fuwa, Sany, Zoomlion, and others.
3. Crane Idlers
Idlers are located at the front of the track frame; working in conjunction with the tensioning mechanism, they guide the track’s movement and regulate its tension.
Material & Process: Manufactured using wear-resistant alloy steel, with the roller body surface undergoing medium-frequency induction hardening to ensure uniform hardness and high impact resistance.
Customization Capabilities: Capable of producing parts via 1:1 reverse engineering—based on samples of worn parts or technical drawings provided by the client—to ensure precise installation and fit.
4. Crane Drive Sprocket
The drive sprocket ring connects to the travel motor reducer; through the meshing of its teeth with the track shoes, it drives the crane forward.
Advantages: The tooth surfaces undergo surface heat treatment to ensure excellent wear resistance.
5. Crane Track Shoes
The track shoes provide the contact surface with the ground, determining the crane’s flotation and traction capabilities.
Manufacturing Process: Precision Casting
Material: 35SiMn, 28CrMnMo, 31Mn2SiMo, 28CrMnMoNi
Brand & Model
| Hitachi | ||||||
| KH70 | KH100 | KH100-1 | KH100D | KH125 | KH125-2 | KH125-3 |
| KH150 | KH150-2 | KH150-3 | KH180 | KH180-2 | KH180-3 | KH230 |
| KH230-3 | KH250HD | KH300 | KH300-2 | KH300-3 | KH500-2 | KH500-3 |
| KH700-2 | KH850 | KH850-3 | KH1000 | U106A | TH55 | CX300 |
| CX350 | CX500 | CX550 | CX650 | CX700 | CX900 | CX1000 |
| CX1100 | CX1800 | CX2000 | PD7 | PD100 | CD1500 | CD2000 |
| Sumitomo | ||||||
| SC350 | SC400 | SC400-2 | SC500 | SC500-2 | SC500-3 | SC550-2 |
| SC650 | SC650-2 | SC650DD-2 | SC650-3 | SC700 | SC700-2 | SC800 |
| SC800HD | SC1000 | SC1000-2 | SC1500-2 | LS78RH | LS78RM | LS78RH5 |
| LS78RHD5 | LS98 | LS108RH5 | LS100C | LS118RH3 | LS118RH5 | LS118RH6 |
| LS118RM | LS120RH5 | LS138H | LS138RH5 | LS208H | LS218H | LS218RH5 |
| LS238RH2 | LS238RH3 | LS238RH5 | LS248RH5 | LS458HD | LS468HD | LS518 |
| LS528 | LS528-S | SD205 | SD307 | SD407 | SD510 | SD610 |
| Kobelco | ||||||
| P&H60P | P&H70P | P&H75P | P&H100P | P&H315 | P&H320 | P&H325 |
| P&H330 | P&H335 | P&H335AS | P&H345 | P&H440 | P&H550A | P&H550-1 |
| P&H550-2 | P&H550S | P&H5035 | P&H5045 | P&H5055 | P&H5100 | P&H7035 |
| P&H7045 | P&H7050 | P&H7055 | P&H7065 | P&H7070 | P&H7080 | P&H7090 |
| P&H7100 | P&H7120 | P&H7150 | P&H7200 | P&H7250 | P&H7250-2 | 7300 |
| FS80 | FS90 | BM500 | BM600 | BM650 | BM700 | BM700HD |
| BM750 | BM800 | BM800HD | BM900 | BM900HD | BM1000HD | BM1200 |
| CKS600 | CKS2500 | CKE600 | CKE700 | CKE700-1 | CKE800 | CKE850 |
| CKE900 | CKE1000 | CKE1100 | CKE1350 | CKE1800 | CKE2000 | CKE2500 |
| CKE2500-2 | CK800 | CK850 | CK1000 | CK1000G | CK1600 | CK2000-2 |
| CK2500 | SL4500 | SL6000 | TK350 | TK750 | TK550 | |
| IHI | ||||||
| CH350 | CH500 | CCH250W | CCH280W | CCH350 | CCH350-D3 | CCH400 |
| CCH500 | CCH500-2 | CCH500-3 | CCH500-T | CCH550 | CCH650 | CCH700 |
| CCH800 | CCH800-2 | CCH1000 | CCH1000-5 | CCH1200 | CCH1500 | CCH1500HDC |
| CH1500-2 | CCH1500E | CCH2000 | CCH2500 | CCH2800 | DCH650 | DCH700 |
| DCH800 | DCH1000 | DCH1200 | DCH6020 | DCH15030 | DCH2000 | K300 |
| K400A | K400B | K1000 | ||||
| Nippon Sharyo | ||||||
| DH300 | DH308 | DH350 | DH400 | DH408 | DH500 | DH508 |
| DH558 | DH600 | DH608 | DH650 | DH658 | DHJ60 | DH60-120M |
| DH650 | DH800 | DH900-5 | DH900D | DH700 | DHP70 | DHP80 |
| ED4000 | ED5500 | |||||
| SCC500B | SCC500C | SCC500D | SCC500E | SCC550C | SCC600C | SCC750C |
| SCC800C | SCC1000D | SCC1250 | SCC1500CC | SCC1500D | SCC1800 | SCC2600A |
| SCC3000WE | SCC4000E | SCC5000WE | SCC6500E | SCC7500 | SCC8100 | SCC8200 |
| SCC8300 | SCC10000 | SCC16000 | ||||
| Fuwa | ||||||
| CC40 | QUY35 | QUY50 | QUY50A | QUY50C | QUY50D | QUY50S |
| QUY70 | QUY70A | QUY80 | QUY80A | QUY80B | QUY90 | QUY100 |
| QUY100A | QUY120 | QUY130 | QUY130A | QUY150 | QUY150A | QUY150C |
| QUY250 | QUY320 | QUY400 | QUY400A | QUY500 | QUY650 | QUY750 |
| QUY1250 | FZX36 | FC80B | ||||
| Manitowoc | ||||||
| 2900wc | 3900 | 4100 | 10000 | 11000-1 | 14000 | 777S2 |
| 888 | 16000 BRS | 3000 | ||||
| Terex Demag | ||||||
| CC400 | CC1100 | CC1500 | CC1800 | CC2000 | CC2200 | CC2400-1 |
| CC2500 | CC2500-1 | CC2800 | TCC40 | TCC 45 | TCC60 | |
| Link-Belt | ||||||
| LS108BS | LS108B | LS108BJ | LS118 | LS138H | LS138HII | LS218 |
| LS248 | LS318 | LS338 | LS418 | LS518 | ||
| Terex American | ||||||
| HC50 | HC60 | HC80 | HC110 | HC165 | HC230 | HC275 |
| HC285 | ||||||
| American | ||||||
| American 9299 | American 9310 | 900 Serial | 7250 | 7260 | 9270 | 4250 |
| 4260 | 5220 | 5299 | 5300 | 599C | 597C | 595C |
| Hitachi Sumitomo | ||||||
| SCX300 | SCX300-C | SCX400 | SCX500 | SCX550E | SCX700 | SCX700-2 |
| SCX700HD | SCX800 | SCX800-2 | SCX800HD | SCX800HD-2 | SCX900 | SCX900-1 |
| SCX900-2 | SCX900HD | SCX900HD-1 | SCX900HD-2 | SCX1000 | SCX1200 | SCX1200-2 |
| SCX1200-3 | SCX1200HD | SCX1200HD-2 | SCX1500 | SCX1500-2 | SCX2000 | SCX2000HD |
| SCX2500 | SCX2500LF | SCX2600 | SCX2800-2 | SCX3500 | SCX5000 | SCX6500 |
| 6000SLX | 6000SLX | 6000SLX | 218HSL | SDX207 | SDX5020 | MX8030B |
| MH5510B | MX6515B | SP110 | SP135 | PD135 | ||
| Zoomlion | ||||||
| QUY50 | QUY65 | QUY70 | QUY200 | QUY260 | QUY650 | ZCC550H |
| ZCC800H | ZCC1100H | |||||
Modern Manufacturing Facility
1. Manufacturing Equipment
The facility typically houses over 70 pieces of various processing equipment and multiple automated production lines.
Melting & Casting: Equipped with 3-ton, 5-ton, and 10-ton medium-frequency induction melting furnaces to meet the casting requirements for large-tonnage idlers and drive sprockets.
Heat Treatment: Features multiple box-type heat treatment furnaces—a critical stage for ensuring the hardness and toughness of undercarriage components. Precise temperature control profiles are utilized to achieve the ideal case depth.
Machining: Equipped with heavy-duty CNC vertical lathes, horizontal lathes, milling machines, boring machines, and machining centers to ensure high tolerance grades and precision.
2. Inspection Center
To guarantee the reliability of every batch of products leaving the factory, leading suppliers have established independent quality inspection centers compliant with the ISO9001:2015 standard. Key inspection equipment includes:
Coordinate Measuring Machine (CMM): Used to precisely measure the geometric dimensions of complex components and verify their conformity with original engineering drawings.
Handheld 3D Scanner: Efficiently reverse-engineers and maps used parts provided by customers, enabling the rapid generation of production data even in the absence of original drawings.
Metallurgical Microscope: Examines the microstructure of metals to ensure that heat treatment processes meet required standards.
Ultrasonic Flaw Detector: Detects internal defects—such as porosity or cracks—within castings, enabling non-destructive testing.
Universal Testing Machine & Impact Testing Machine: Verifies the material’s tensile strength and impact toughness.
3. Quality Assurance Commitment
VM core products (such as track rollers and idlers) typically come with a quality guarantee covering 2,500 working hours or one year. Under extremely harsh operating conditions, the actual service life of certain high-quality components can exceed three years.
Why Choose VM?
One-Stop Sourcing
A reliable supplier of crane undercarriage parts offers a comprehensive, end-to-end solution—covering everything from “four-wheel” components to track assemblies. Whether you require parts for American brands like Manitowoc, Japanese brands like Sumitomo, or domestic brands such as Sany and Zoomlion, you can source them all from a single supplier. This approach not only reduces procurement costs but also mitigates the risks associated with compatibility issues across multiple brands.
OEM Customization & Rapid Delivery
Short Lead Times: For standard parts or in-stock products, the delivery timeframe is typically within 7 to 20 days.
Customization: Simply provide technical drawings or a sample of the original part, and we can complete reverse engineering and initiate production within 15 days.
Contact VM®
Website: https://cranecrawler.com/
Email: info@cranecrawler.com
