Descrizione
EP-CTD3300 Planetary Track Drive Gearbox ?? 33,000 Nm
Brevini CTD3300 Compatible Replacement | EVER POWER
IL EP-CTD3300 consegna 33.000 Nm output torque with an optionally available dual-speed function built directly into the gearbox body ?? replacing the need for a costly separate two-speed motor. Engineered to replace the Brevini riduttori CTD3300, this unit is specified by machine designers who need one track drive unit to serve both high-torque work mode and faster tramming mode on 30-40 t class equipment.
Panoramica del prodotto
The EP-CTD3300 serves 30-40 t hydraulic excavators, large tracked road headers, heavy crawler-mounted pile drivers and large-format tracked agricultural machines. The gearbox-integrated dual-speed mechanism hydraulically engages or bypasses the third planetary stage, providing a torque-biased low speed for work and a higher speed for travel ?? all controlled by the machine’s existing travel control valve without additional hydraulic circuit hardware.
Parametri tecnici
| Parametro | Valore |
|---|---|
| Modello | EP-CTD3300 |
| Sostituisce | Brevini riduttori CTD3300 |
| Coppia massima in uscita | 33.000 Nm |
| Stadi di trasmissione | 3 |
| Dual-Speed | Optional hydraulic ratio change |
| Intervallo di rapporto | 30:1 – 160:1 |
| Velocità massima di input | 2,400 rpm |
| Continuous Thermal Limit | 48 kW |
| Materiale per alloggi | Ductile Iron GGG50, epoxy-chromate coated |
| Lubrificazione | Olio sintetico ISO VG 220 (riempito in fabbrica) |
| Classe di protezione | IP68 |
| Temperatura di esercizio | da -30 °C a +85 °C |
| Peso approssimativo | ~98 kg |
| Freno | Sblocco idraulico multidisco a molla |
Principio di funzionamento
In single-speed configuration, the three planetary stages operate in series providing the full 160:1 ratio at maximum torque. In dual-speed configuration, a hydraulically actuated clutch pack inside the stage-3 housing engages or disengages stage 3 independently. When stage 3 is disengaged (bridged), the unit outputs at the 2-stage ratio ?? approximately 2.5x faster than the 3-stage ratio ?? allowing the machine to tramp to the next work position quickly before re-engaging stage 3 for work.
IL dual-speed clutch pack uses sintered metal friction discs rated for 50,000 engagement cycles, managed by a solenoid valve on the machine travel circuit. Speed changes occur smoothly under load at walking pace.
Vantaggi principali
|
◼ Gearbox-Integrated Dual Speed
No separate two-speed motor required ?? saves cost, weight and hydraulic circuit complexity. |
◼ 50,000-Cycle Clutch Pack
Sintered metal discs rated for 50,000 speed changes ?? suits high-frequency dual-speed operation. |
|
◼ 33,000 Nm High Torque
Handles the highest torque demands of 30-40 t class machines in single-speed work mode. |
◼ Epoxy-Chromate Coating
500-hour salt spray rated external coating for extended outdoor storage and harsh site conditions. |
|
◼ Direct CTD3300 Drop-In
Matching flange and port layout ?? installs in the original Brevini housing pocket without modification. |
Struttura e tecnologia dei materiali
L'alloggiamento è fuso da Ghisa duttile GGG50 and externally coated with epoxy-chromate primer + polyurethane topcoat (500-hour salt spray). The dual-speed clutch housing is a separate bolted module that can be removed and serviced independently without disturbing the main gear train. All planet gears use acciaio cementato 17CrNiMo6 ground to DIN 5. The output bearing is a large-bore taper roller pair pre-loaded at the factory to prevent axial play under the combined sprocket and chain loads of a 35 t class excavator.
Scenari applicativi tipici
| Industria | macchina / Utilizzo | Requisito chiave |
|---|---|---|
| Movimento terra | 35 t excavator, quarry bench | Low speed for bench digging; high speed for 200 m cross-quarry trams between benches. |
| Attività mineraria | Crawler road header, coal mine drift | Slow precise cutting advance; faster speed for repositioning between cuts. |
| Piling | Tracked hydraulic piling rig | Low speed for precise pile position; faster tramming between pile locations on large sites. |
| Agriculture | Large tracked field cultivator | Low speed for field work; higher speed for road travel between fields. |
Guida alla selezione
- Dual Speed Required? ?? Confirm if machine needs two distinct travel speed ranges; standard single-speed available at lower cost.
- Ratio Selection ?? State required low speed and high speed; EVER POWER will confirm stage 2/3-stage ratios.
- Clutch Engagement Frequency ?? For high-frequency dual-speed (> 30 changes/hour) specify heavy-duty clutch disc set.
- Ambient Temperature ?? Below -25 degC: specify Arctic oil and seal grade.
- Flangia motore ?? Provide hydraulic motor model for direct shaft and flange confirmation.
Contatta i nostri ingegneri for dual-speed ratio optimisation.
Brevini CTD3300 vs. EVER POWER EP-CTD3300
Avviso importante: EVER POWER references the Brevini riduttori CTD3300 model number solely to assist customers in identifying a compatible replacement. We do not manufacture, sell, or claim any affiliation with Brevini riduttori. No trademarks or intellectual property of Brevini are reproduced. The EP-CTD3300 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspetto | Brevini CTD3300 | EVER POWER EP-CTD3300 |
|---|---|---|
| Prezzo | High OEM rate | Competitive alternative |
| Tempi di consegna | 10-18 settimane | 3-6 settimane |
| Dual-Speed | Available at premium | Standard catalogue option |
| Clutch Life | Standard | 50,000-cycle sintered disc |
| Garanzia | 12 mesi | 18 mesi |
Matched travel motors for EP-CTD3300 single and dual-speed configurations available from EVER POWER. Request a complete drive system quotation.
Certificazioni di qualità e impegno nel servizio
- ISO 9001:2015 ?? Dual-speed clutch assembly tested and documented per unit.
- Marcatura CE Direttiva Macchine 2006/42/CE.
- Garanzia di 18 mesi from dispatch ?? includes dual-speed clutch pack.
- Spare clutch disc sets stocked for priority dispatch.
More at EVER POWER Chi siamo.
Casi di studio ?? Appunti di ingegneria sul campo
| Paese | Applicazione | Feedback dei clienti |
|---|---|---|
| Russia | 35 t excavator, Siberian coal open cast, dual-speed | “The tram time between benches dropped by 35% after installing the dual-speed units. Fuel consumption fell accordingly. Huge productivity gain.” ?? Mine Equipment Director, Kemerovo. |
| U.S.A. | Tracked hydraulic piling rig, Texas infrastructure project | “Moving a piling rig 50 m between piles at low speed costs 20 minutes. With dual-speed it takes 6 minutes. On a project with 400 piles, that adds up.” ?? Project Manager, Houston. |
| Francia | Large tracked field cultivator, grain farm | “Road speed between parcels is important for our operator’s working day. The dual-speed gearbox gave us a compliant road travel speed without a separate motor swap.” ?? Farm Machinery Manager, Beauce. |
Domande frequenti
Q: Can the dual-speed module be added to a standard single-speed unit already on the machine?
A: No. The dual-speed module requires a specific housing boss and internal bore. It must be specified at order. Field addition is not feasible.
Q: What happens if the dual-speed solenoid valve fails?
A: On solenoid failure the clutch defaults to the low-speed (full 3-stage) mode ?? the machine can still travel and work safely, only without the fast travel function.
Q: Is the clutch module separately serviceable?
A: Yes. The dual-speed clutch module is bolted to the main housing and can be removed without disturbing the gear train. A spare clutch set can be fitted in approximately 3-4 hours.
Collabora con EVER POWER
EVER POWER delivers track drive solutions from compact mini-excavators to the largest mining machines. See our gamma completa di ricambi O contact us for a quotation. Homepage: planetary-gear-box.top.
