Crane Front Idler
What is a crane idler?
Crane idlers are an important part of the crane undercarriage parts, especially in cranes with tracks. High quality crane idler play a key role in supporting the track tensioning system, ensuring proper alignment and facilitating track movement.
Here are the main functions of crane idlers
Search Products
Track Tensioning
Crane idlers help maintain proper tension on the crane track. It works in conjunction with the crawler crane sprocket and tensioning mechanism to ensure that the track remains taut. This tension is essential to prevent track slippage, maintain smooth movement, and ensure the stability of the crane during operation.
Guide the Track
Crane idlers act as guides for the track, ensuring that the track remains aligned and properly positioned. As the track moves, a high-quality crane idler helps hold it in place, allowing for smooth and controlled movement, especially when the crane is lifting heavy objects or moving over uneven terrain.
Adjust Track Length
High-quality crane idler can be used to adjust track length, which is useful when fine-tuning the crane chassis for different operating conditions. This allows the crane to handle different loads and operate more efficiently on different surfaces.
Positioning for Efficient Operation
Crane idlers are usually located to the rear or opposite end of the crawler crane sprocket. This location helps with proper track arrangement and helps the crane move smoothly over the ground, especially when rotating or when the crane is lifting and transferring heavy objects.
Crane Idler Supplier
Hitachi Idler
- Product Name： Idler for Hitachi Crawler Crane
- Brand: VM
- Available Models:CX300, CX350, CX350DR, CX500, CX500-2, CX550, CX550-2, CX650, CX700, CX700 Link Type, CX900, CX900HD, CX1000, CX1100, CK550, HE6010B, KH70, KH100, KH100-1, KH100-2, KH100D, KH125, KH125-2, KH125-3, KH125-3 Link Type, KH125D, KH150, KH150-2, KH150-3, KH180, KH180-2, KH180-3, KH180-3 Link Type, KH230, KH230 Link Type, KH230-3, KH250, KH250-3, KH250HD, KH300, KH300-2, KH300-3, KH500, KH500-2, KH500-3, KH700, KH700-1, KH700-2, KH850-3, KH1000, MX6515B, PD7, PD80, PD90, PD100, PD135, TH55, TH55ED, U106A.
Kobelco Idler
- Product Name： Idler for Kobelco Crawler Crane
- Brand：VM
- Available Models： BM650, BM700HD, BM700HD-2, BM750, BM800HD, BM900, BME800HD, CK850-II, CK850-III, CK850G, CK1000 III, CK1000G, CK1100G, CK1600-II, CK2000-II, CK2500-II, CK 2750, CK2750G, CKS600, CKE600, CKE700, KE800G, CKE800-1F, CKE850, CKE1350-1F, CKE1800-1F, CKE2500-II, CKE2500G, CKE4000C, P&H75P, P&H85P-60C, P&H325, P&H335AS, P&H345, P&H 550-1, P&H550-2, P&H550S, P&H550-S2, 5035, 5100, 5170, 7035, 7045, 7050, 7055, 7055-1, 7055-2, 7055-3F, 7090, 7120, 7120-1F, 7150, 7200, 7250, 7250S, 7250-2, 7250-2F, ES80, FS90, TK550, SK1600D, CKL1000I, CKL1500, etc.
Link Belt Idler
- Product Name: Idler for Link Belt Crawler Crane
- Brand: VM
- Available Models: LS78, LS108BS, LS108B, LS108RSS, LS108HII, LS118, LS118RH-II, LS138HIII, LS138HSL CS, LS208H, LS218H, LS218HSL, LS228HSL, LS238HSL, LS248HII, LS308H, LS31 8, LS338, LS348H5, LS418, LS518, etc.
Other idler VS VM® idler
Other idler
A. The crane idler bimetal sleeve sliding bearing is out of tolerance
Problem description: When the crawler is moving, the bimetal sleeve sliding bearing of the crane idler has an out-of-tolerance problem, which causes vibration and impact in the crawler system. Once the geometric dimensions are out of tolerance, the gap between the crane idler shaft and the sleeve may be too small or even no gap.
Consequence: The thickness of the lubricating oil film is insufficient or may even be completely missing, resulting in increased friction between the shaft and the bearing, further accelerating wear.
The crane idler shaft surface is rough
Problem description: The high-quality crane idler shaft surface is too rough and has many metal ridges, which destroys the integrity and continuity of the lubricating oil film between the shaft and the sliding bearing.
Consequence: During operation, a large amount of metal debris will be generated in the lubricating oil, making the shaft and bearing surfaces rougher, further deteriorating the lubrication conditions, and causing severe wear.
C.Defects in the original structural design
Problem description: There is a problem with the design of the roller’s lubrication system. After the lubricating oil is injected from the plug hole at the end of the crane idler shaft, it should theoretically fill the entire cavity. However, in actual operation, if a special oiling tool is not used, the lubricating oil can only flow gradually under its own gravity, and it is difficult to completely fill the internal cavity of the crane idler. Moreover, the gas in the cavity is not discharged smoothly.
Consequence: The lubricating oil cannot fully lubricate, resulting in insufficient lubrication and aggravated bearing wear.
VM® idler
A. The crane idler components are precisely measured
To ensure optimal performance, the dimensional control of high-quality crane idlers is strictly maintained during production. This involves precise management of the geometric dimensions of the bimetal sleeve sliding bearing to ensure the gap between the shaft and sleeve meets design standards. Precision machining technologies, such as CNC lathe processing and laser cutting, are employed to enhance bearing surface accuracy, reduce tolerance ranges, and guarantee a proper fit between the shaft and sleeve for smooth operation and reduced wear.
B.Detailed surface treatment
Improvement of the surface treatment process: Optimize the surface processing technology of the high-quality crane idler shaft, use methods such as grinding and polishing to reduce surface roughness and ensure that its surface smoothness meets the standard requirements.
Add surface coating: Use wear-resistant coating or hardened coating to enhance the wear resistance of the shaft surface and reduce friction.
C.Optimize structural design
Improve gas exhaust design: Adjust the gas exhaust channel in the lubrication cavity to ensure that when the lubricating oil enters the cavity, the air in the cavity can be effectively discharged to avoid air blockage.
Increase lubricating oil flow and pressure: Increase the flow and pressure of lubricating oil to ensure that the lubricating oil can be evenly distributed to all key parts to reduce friction and wear.
Choose the right lubricant: Use suitable lubricating oil or grease to ensure that the lubricating oil can effectively reduce friction and wear under different working conditions.
Partners
Crane Parts Delivery
Contact
Looking for crane undercarriage parts manufacturers?
Contact us to get the best quote and information about the crawler crane parts you are interested in.
