Pignoni per macchine movimento terra
Excavators, bulldozers, motor graders, scrapers, and compactors all rely on auxiliary roller chain drives to power accessory systems including hydraulic pump drives, cab air-conditioning compressor drives, engine cooling fan drives, and work-implement secondary drives. These earthmoving equipment chain drive sprockets must withstand extreme vibration, contamination from clay and rock dust, high ambient temperatures, and the shock loads of heavy construction operation. Browse our construction & mining sprocket range →
Panoramica
Modern large earthmoving machines (100–700 tonne class) use roller chain drives in several critical auxiliary systems. The most common applications are:
• Engine PTO pump drive chains: Transmit engine torque to hydraulic pumps at high speed — typically ANSI #50 or #60, running in oil-bath conditions inside the engine compartment.
• Cab A/C compressor drive chains: Power the air-conditioning compressor from the engine accessory drive — ANSI #40 or #50 in a partially enclosed environment.
• Cooling fan drive chains: On large mining excavators, hydraulic fan drives use ANSI #60 or #80 chains with high-precision sprockets for uniform fan speed.
• Track-drive auxiliary chains: Some crawler machines use roller chain segments in the final-drive reduction — heavy-duty ANSI #100 or #120 with 40Cr alloy sprockets.
Specifiche tecniche
| Parametro | Earthmoving Value | Allineare |
|---|---|---|
| Chain Standard (engine PTO) | ANSI #50 / #60 | ANSI #40–#80 |
| Chain Standard (track final drive) | ANSI #100 / #120 | ANSI #80–#160 |
| Material (engine PTO) | C45 temprato a induzione | 40Cr alloy for high-shock drives |
| Material (track/final drive) | 40Cr alloy steel | — |
| Durezza del dente | HRC 50–62 | HRC 48–65 |
| Profondità del caso | 1.5–3.5 mm | Up to 5 mm |
| Vibration Resistance | High (earthmoving) | — |
| Stile Hub | Type B finished bore (engine) | Type C double hub (track drives) |
| Tolleranza del foro | H7 | H6 for precision pump drives |
| Superficie | Black oxide (enclosed engine) | Dacromet (external drives) |
| Spiaggia | Simplex | Duplex for high-power final drives |
| Operating Temperature | −30°C to +120°C | Engine compartment range |
| Lubrificazione | Oil-bath (engine PTO) | Manual (external drives) |
| Grado di lavorazione | Grado DIN 6 | — |
| Max Pitch Line Load | Up to 30,000 N | Final-drive track chains |
| Shaft Diameter Range | 30–180 mm | Up to 250 mm custom |
| Documentazione | Batch cert / MTC 3.1 | Mine-site requirement |
| Valutazione del carico d'urto | Very high (earthmoving) | — |
| Weight (ANSI #80 Z=17) | ~3.8 kg | 1.5–60 kg (full range) |
Vantaggi in termini di prestazioni
Informazioni sulla compatibilità
| Machine / Drive Position | Pignone consigliato | Note |
|---|---|---|
| Excavator hydraulic pump drive (ANSI #50) | ANSI #50 C45 hardened sprocket | Engine compartment oil-bath drive |
| Bulldozer fan drive chain (ANSI #60) | ANSI #60 precision sprocket | Grade 6 for smooth fan speed |
| Large excavator final drive (ANSI #100) | ANSI #100 40Cr alloy sprocket | High shock; Type C double hub |
| Motor grader auxiliary drive (ANSI #50) | ANSI #50 finished bore sprocket | Open-environment dacromet coat |
| Compactor drive chain (ANSI #60) | ANSI #60 induction-hardened sprocket | Vibration-resistant bore fit required |
| Komatsu, Caterpillar, Liebherr (ref only) | ANSI equivalent per chain measurement | Brand reference for cross-ref only |
| Hitachi, Volvo, John Deere CE (ref only) | ANSI or ISO equivalent | Confirm chain standard & tooth count |
Selection Guide
| 📏 | Machine type & position | Engine PTO/pump drive: ANSI #50 or #60 C45 hardened. Fan drive: Grade 6 precision ANSI #60. Final/track auxiliary: ANSI #80–#120 40Cr alloy. Identify position first to determine load and precision requirement. |
| 🔥 | Load & shock factor | Calculate peak pitch-line load including shock factor (2.5–5× for earthmoving). If load exceeds C45 rating, specify 40Cr alloy steel. Our engineering team can perform a load calculation from motor rating and drive ratio. |
| 🔧 | Bore & hub specification | Engine compartment drives: H7 finished bore with Loctite 638. External drives with vibration: H6 bore with double key. Track/final drives: Type C double hub, solid bore, H6 minimum. |
| 📋 | Documentation for mine site | Specify EN 10204 3.1 material cert for all 40Cr alloy sprockets. Hardness test certificate and dimensional report also available on request for mine-site QMS compliance. |
Installation for Earthmoving Equipment Sprockets
- Machine LOTO: Apply site earthmoving equipment LOTO procedure. Park with all implements lowered, hydraulics depressurised, electrical isolated.
- Allow engine to cool below 50°C before accessing engine compartment chain drives.
- Drain oil from engine PTO gearbox if replacing internal sprockets. Catch oil in approved container; do not allow contamination of surrounding ground.
- Remove old sprocket with two-jaw puller. For heavy track-drive sprockets, use certified lifting equipment rated for the sprocket weight.
- Inspect shaft and keyway. Apply Loctite 638 retaining compound (not thread-lock) to the shaft bore interface before installing the new sprocket.
- Install new sprocket with hydraulic press or bearing heater for H6 fits. Torque all fasteners to specification.
- Align drive and driven sprockets with precision straight-edge or laser tool — target ≤0.5 mm lateral offset. Earthmoving machine vibration amplifies misalignment effects.
- Install chain, set tension per OEM service manual. Refill oil to specified level.
- Run at low idle for 15 minutes before full-load operation. Check for oil leaks and unusual noise.
Troubleshooting Earthmoving Sprockets
| Sintomo | Causa probabile | Azione consigliata |
|---|---|---|
| Engine compartment sprocket loosening | Vibration-induced bore fretting | Remove; apply Loctite 638; reinstall to H6 tolerance |
| Rapid tooth wear (dust exposure) | External drive without adequate enclosure | Add sealed chain guard; dacromet sprocket |
| Chain jumping on fan drive | Worn precision sprocket causing velocity ripple | Replace with Grade 6 CNC-hobbed sprocket |
| Bore cracking on track drive | Under-specified material (C45 in shock application) | Replace with 40Cr alloy steel sprocket |
| Chain overheating in engine compartment | Insufficient lubrication at high temp | Verify oil-bath level; upgrade to ISO VG 220 |
Casi di studio di clienti australiani
Domande frequenti
Prodotti correlati: Catene di trasmissione
⛓️ Catene di trasmissione compatibili
Produciamo e forniamo una gamma completa di catene di trasmissione a rulli paired with every sprocket — ANSI, ISO, double-pitch, stainless, and special-purpose chains for all industrial applications.
Standards & Certifications
All Ever-power Australia sprockets are manufactured to the following international standards:
Quality commitment: Ispezione dimensionale 100%, test di durezza su ogni lotto e tracciabilità completa di ogni ciclo di produzione. Certificati di prova dei materiali disponibili su richiesta.
Perché scegliere Ever-power Australia?
We are a vertically integrated sprocket manufacturer with 25+ years of chain drive expertise. Our 35,000 m² facility produces 4 million+ sprockets per year to ISO, ANSI, JIS, DIN, BS and GB standards, ISO 9001 certified. Our manufacturing →
Pronti per ordinare o avete bisogno di assistenza tecnica?
Our engineering team provides free selection support and fast quotes. Australian stock on core sizes — same-week dispatch on standard sprockets.
