Crane Idler

30 Years of Experience – Engineering Safety & Reliability into Every Crawler Crane Undercarriage Parts.

What is a Crawler Crane Idler?

The idler is an essential component of the crawler crane’s undercarriage. It is situated at the front of the track assembly. Its main function is to ensure the correct guidance of the track around the drive sprocket and the crawler track rollers. It must be ensured that the track does not derail sideways. In addition, the track tension must be kept stable.

Why Choose Us?

Quality Assurance

The roller body is forged from high-strength alloy steel sourced from leading mills—such as Baosteel and Laigang—and undergoes rigorous chemical composition analysis.

We eschew standard iron bushings in favor of pure copper alloy bushings; their superior self-lubricating properties and impact toughness effectively protect the axle from wear and abrasion.

OEM Interchangeability

The performance of an crane idler depends not only on its material composition but, crucially, on the precision of its dimensional matching. All our crane front idlers are manufactured strictly according to original equipment manufacturer (OEM) blueprints, ensuring absolute precision in mounting hole spacing, rim thickness, and tread curvature.

Service Excellence

We offer a quality guarantee covering 2,500 working hours. Should any abnormal damage occur during this period—provided it is not caused by human error or misuse—we pledge to provide a free replacement or cover the cost of repairs.

Whether you need a tutorial on installing crane idlers or advice on usage precautions, our experienced technical team is always ready to assist you.

IHI CCH700 Idler

Demag CC2800 Idler

Terex HC80 Crane Idlers

Kobelco CKE2500 Idler

Liebherr Crane Undercarriage Parts

HS852HD, HS855HD, HS895, HS833HD, HS843, HS843HD, HS853, HS853HD/VRM, HS882, HS883, HS872, HS885, HS895HD,HS830, HS832HD, HS840, HS841, HS842HD, HS851, HS851HD, HS870, HS871, HS873HD, HS993, HS8200HD, LR1100, LR1130, LR1160, LR1200, LR1250, LR1280, LR1300, LR1350, LR1400, LR1400-2, LR1550, LR1600, LR1600-2, LR1650, LR1750, LR11000, LR11350, LTR1100, LTR1220, LR1130, LTR1060, LB28, R974

Kobelco Crane Undercarriage Parts

BM500, BM600, BM650, BM700, BM700HD, BM700HD-2, BM750, BM800, BM800HD, BM900, BM900HD, BM1000, BM1200, BME800, BME800HD, BMS800, BMS900, BMS1000

CK800, CK850, CK850-II, CK850-III, CK850G, CK850-2F, CK900, CK1000, CK1000-II, CK1000-III, CK1000G, CK1100, CK1100G, CK1600, CK1600-II, CK2000, CK2000-II, CK2500, CK2500-II, CK2750, CK2750G, CKS600, CKS800, CKS900, CKS1100, CKS1350, CKS2500, CKE600, CKE700, CKE800, CKE800G, CKE800G-2. CKE800-1F, CKE850, CKE900, CKE1000, CKE1100, CKE1200, CKE1350, CKE1350-1F, CKE1800, CKE1800-1F, CKE2500, CKE2500-II, CKE2500G, CKE4000C, CKL1000I, CKL1350I, CKL1500, CKL2600

P&H60P, P&H70P, P&H75P, P&H85P-60C, 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&H550 S2

5035, 5045, 5055, 5080, 5100, 5170, 7035, 7045, 7050, 7055, 7055-1, 7055-2, 7055-3F, 7065, 7065-2, 7070, 7080, 7080-2, 7090, 7100, 7120, 7120-1F, 7150, 7200, 7250, 7250S, 7250-2, 7250-2F, 7300

FS80, FS90, SL4500, SL6000, TK550, SK1600D, etc.

Hitachi Sumitomo Crane Undercarriage Parts

SCX300, SCX300-C, SCX400, SCX400T, SCX500, SCX550, SCX550-2,SCX550-3,SCX550C, SCX550E, SCX700, SCX700-C, SCX700-2, SCX800, SCX800-2,SCX800HD,SCX800HD-2, SCX900, SCX900-2, SCX1000, SCX1000A-3, SCX1200, SCX1200-2,SCX1500,SCX1500-2, SCX1500A-3, SCX2000,SCX2000A-2, SCX2500, SCX2600, SCX2800-2,etc.

IHI Crane Undercarriage Parts

6020, CH350, CH400, CH500, CH800, CCH300T, CCH350, CCH350T, CCH400, CCH500, CCH500-2, CCH500-3, CCH500-3 II, CCH500EX, CCH500-T, CCH550, CCH650, CCH700, CCH700-3II, CCH800-2, CCH900, CCH1000, CCH1000-5, CCH1200, CCH1200-5, CCH1500, CCH1500E, CCH1800, CCH2000, CCH2000-5, CCH2500, CCH2800, CCH3000, DCH650, DCH700, DCH800, DCH800M, DCH900, DCH1000, IPD100, K400A, K400B, K1000, CCH1500HD, CCH400-2.

Hitachi Crane Undercarriage Parts

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.

Manitowoc Crane Undercarriage Parts

Manitowoc M50, M50-W, M65, 777, M80, M85, 222, M222EX, 2250, 250, 888, 999, 3900, 4000, 4100, 4500, 4600, 6400, 8000, 8500, 10000, 11000, 12000, 14000, 16000, 18000, MLC300, MLC165…

Demag Crane Undercarriage Parts

CC200, CC280, CC280-1, CC400, CC400C, CC600, CC1000, CC1100, CC1200, CC 1500, CC 1800, CC 2000, CC2000-1, CC 2200, CC2400, CC2500, CC2600, CC 2800, CC 3800, CC4000, SL3800, CC 6800, CC 8800

Terex Crane Undercarriage Parts

HC50, HC60, HC80, HC110, HC165, HC230, HC275

American Crane Undercarriage Parts

American 5299, 5300, 500, 700 Series, 7250, 7260, 900, 900 Series, 9260, 9299, 9310, 9320, 11320

NIPPON SHARYO Crane Undercarriage Parts

DH308, DH350, DH400, DH400 III, DH408, DH500, DH500-5, DH508, DH508-105M, DH550-3, DH550-5, DH558, DH600, DH608, DH608-120M, DH650, DH650-5, DH658,DH700, DH758, DH718, DH900, DH758-160M, DH900-2(DH900-5 ), DHJ30, DHJ40, DHJ60, DHP70, DHP80, DHP100, ED4000, ED5000, ED5500, ED5800H..

Link Belt Crane Undercarriage Parts

LS98, LS108, LS108B, LS108BJ, LS108BSS, LS108H5, LS108HD, LS118, LS118RH, LS128DL, LS138H, LS138HII, LS138HSL, LS208H, LS218H, LS218HII, LS218HSL, LS228HSL, LS238H, LS238HSL, LS248H, LS248H5, LS248HII, LS248HSL, LS278, LS278H, LS318, LS338, LS348, LS348H5, LS408, LS418, LS518

Sany Crane Undercarriage Parts

SCC450A, SCC500A, SCC500B, SCC500C, SCC500D, SCC500E, SCC550C, SCC600A, SCC600C, SCC750C, SCC750E, SCC800A, SCC800C, SCC1000A, SCC1000E, SCC1000C, SCC1000D, SCC1250, SCC1500CC, SCC1500D, SCC1800, SCC2500C, SCC2600A, SCC300WE, SCC3200, SCC4000E, SCC5000WE, SCC6500E, SCC7500, SCC8100, SCC8200, SCC8300, SCC10000, SCC16000, SCI1500A, SCI1850A

Fuwa Crane Undercarriage Parts

CC40, FCC55, FCC80A, FCC150C, FWX55, FWX75, FWX85, FWX135, FWX8185, FWX225, FWX285, QUY35, QUY35A, QUY50, QUY50A, QUY50C, QUY55, QUY70, QUY70A, QUY70HD, QUY80, QUY80A, QUY80B, QUY90, QUY100, QUY100A, QUY120, QUY150, QUY150A, QUY150C, QUY160C, QUY250, QUY250-1, QUY250-3, QUY250A, QUY320, QUY400, QUY400A, QUY500, QUY650, QUY750, QUY1250

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Please specify the crane brand, model, and crane undercarriage parts you require.

ISO9001

Our Factory

Located in Shandong, China, we are a factory with over 30 years of experience in manufacturing crane undercarriage parts. Our facility spans 7,000 square meters and integrates casting, forging, heat treatment, precision machining, assembly, and inspection processes. We export our products to various countries in Southeast Asia, Russia, the Middle East, and South America.

How to Determine if an Crane Idler Needs Replacement?

1. Severe Rim Wear

With extensive usage, the friction between the idler wheel and the track chain links causes the wheel rim to wear out and develop a sharp edge. If the rim thickness is reduced beyond one-third of its original size, the crawler crane is rendered extremely prone to track derailment, especially during turns or when operating over uneven terrain. Not only does this affect construction work efficiency, but it is a major safety hazard.

2. Oil Leakage

When oil leakage is seen in the form of black oil stains on the inner part of the idler wheel, near the end cap, or at the bottom of the wheel body, it is a clear sign that the sealing system is damaged. Without adequate oil, the internal bearings and pure copper alloy bushings wear out quickly, usually in a matter of hours, causing the wheel body to become unstable. Hence, the moment oil leakage is visible, it is a clear indication that the idler needs to be replaced immediately.

3. Roller Body Instability/Wobbling

With the equipment shut off, you may use a pry bar to pry the idler wheel gently. Alternatively, you may grasp the roller body by the outer edges of the roller with your hands and try to shake it violently. In the event you notice instability, it is an indication of extreme wear of the copper bearings inside the roller body. It is recommended that you arrange for a replacement as soon as possible.

4. Abnormal Noises During Travel

You may be required to inspect the surface of the roller where the crane idler makes contact with the track chain links. In the event you notice distinct signs of pitting or stepped wear on the roller surface, or when you notice extreme wear on one side of the roller compared to the other side, it is recommended that you replace the crane front idler roller as soon as possible to avoid damaging the rest of the crawler crane undercarriage equipment.

5. Cracks in the Idler Surface

If distinct cracks are visible on the rim of the crane idler or if small fragments of metal have chipped away from the rim’s edge, it is a clear indication that the wheel body is affected. Cracking is a clear indication of a reduction in the load-carrying capacity. In the event of heavy-load usage, the wheel body is prone to shattering at any moment, and this could cause a catastrophic track failure, posing a severe threat to safety. As soon as any cracks or fractures are identified, the operation should be halted immediately.

Professional Shipment

Multiple steel bands are applied to securely fasten the guide idlers to the pallet, preventing any shifting during transit. The exterior of the crane idlers is wrapped in plastic film to protect the painted surface and guard against moisture. We exclusively utilize export-standard, eco-friendly, fumigation-free wooden crates to ensure smooth clearance through customs quarantine at the destination port, thereby eliminating the need for any secondary processing by the client.

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FAQ

What's the difference between an idler and a sprocket?

The idler is a passive (non-powered) wheel at the front that guides the track and maintains tension. The sprocket is the powered wheel at the rear that engages with the track bushings to drive the crane forward or backward .

Why is my crane idler leaking oil?

Idlers use a permanent floating seal mechanism . Leakage usually means this seal has failed due to wear, contamination, or age. If you see oil, the seal is compromised and the idler should be replaced soon, as loss of lubricant will lead to internal damage and complete failure.

My idler feels hot after use Is that normal?

While some heat from friction is normal, excessive heat spots, especially in the center of the idler, indicate a loss of lubricant and imminent internal failure. If it’s too hot to touch, you should investigate immediately .

Do you sell idlers for older Liebherr or Manitowoc crawler crane models?

Yes, we support a wide range of legacy models. Please contact our sales team with your crane’s model number and year of manufacture, and we can check compatibility for you.