Опис
EP-CTU3200 Planetary Track Drive Gearbox
Brevini CTU3200 Compatible Replacement | EVER POWER
The EP-CTU3200 by EVER POWER delivers 32,000 Nm output torque in a compact 2-to-3-stage sealed planetary housing, engineered as a cost-effective, form-fit replacement for the Brevini riduttori CTU3200. Designed for mid-to-large tracked construction and earthmoving equipment, this unit combines wide ratio coverage with all-terrain sealing to minimise unplanned downtime.
Product Overview
Primary markets: 18-25 t hydraulic excavators, crawler-mounted pipe layers, tracked soil stabilisers and large tunnelling machines. The EP-CTU3200 features an extended ratio range of 25:1 to 120:1 achieved through a configurable 2-or-3-stage arrangement, allowing a single part number to serve machines with significantly different travel speed requirements without any housing change.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-CTU3200 |
| Replaces | Brevini riduttori CTU3200 |
| Max Output Torque | 32,000 Nm |
| Gear Stages | 2 – 3 |
| Ratio Range | 25:1 – 120:1 |
| Max Input Speed | 2,800 rpm |
| Efficiency | >= 96% (per stage) |
| Backlash | <= 10 arcmin |
| Housing Material | GGG50 ductile iron |
| Lubrication | Synthetic ISO VG 220 (bath, factory filled) |
| Protection Class | IP68 |
| Operating Temp. | -30 degC to +85 degC |
| Approx. Weight | ~88 kg |
| Brake | Spring multi-disc / hydraulic release (standard) |
Working Principle
In 3-stage configuration, the first two stages use a standard 3-planet arrangement for high input speed tolerance; the final stage upgrades to a 4-planet carrier for enhanced torque capacity at the output. This hybrid arrangement allows the EP-CTU3200 to handle both the high-speed continuous travel phase and the high-torque low-speed pushing phase of excavator track operation without thermal de-rating.
The floating sun gear shaft design automatically centres the load distribution across all planet gears, compensating for minor shaft misalignment caused by track chain tension deflection and chassis flexion during operation.
Core Advantages
| ▲ 2-or-3-Stage Flexibility One part number covers 25:1-120:1 ratio range – simplifies procurement and spares stocking. |
▲ Floating Sun Gear Self-equalises planet load distribution, extending tooth life under chassis deflection loads. |
| ▲ 4-Planet Output Stage Higher tooth contact count reduces root stress, supporting rated torque at extreme duty cycle. |
▲ -30 degC Cold Start Arctic-grade synthetic oil and cold-rated FKM seals ensure clean cold-morning engagement. |
| ▲ Direct Brevini CTU3200 Replacement Same flange pattern, spline spec and brake port locations – swap in place with no machine modification. |
|
Structure and Material Technology
All gear blanks are precision-forged from 17CrNiMo6 case-hardening steel, vacuum degassed for superior core impact toughness. Post-carburising case depth is controlled to 0.9-1.2 mm; tooth flanks are profile-ground to ISO/DIN accuracy class 5. The output flange is machined with a T-slot register face for accurate sprocket centering without adjustment shims. O-ring face seals use HNBR compound for resistance to biodegradable hydraulic fluids increasingly specified on European and Japanese job sites.
Typical Application Scenarios
| Industry | Machine Type | Key Requirement |
|---|---|---|
| Construction | 20 t excavator | High-cycle travel; 3-stage for fast tramming speed on road. |
| Tunnelling | Crawler-mounted shotcrete robot | Slow precise positioning in confined tunnel bores; high torque for gradients. |
| Pipeline | Tracked pipelayer (side-boom crane) | Smooth slow-speed travel alongside open trench with heavy suspended pipe. |
| Agriculture | Large tracked harvester chassis | Wide ratio range handles both field travel speed and headland turning torque. |
Selection Guide
- Drawbar Pull (kN) – Required traction force on worst-case gradient x safety factor (1.3 minimum).
- Stage Count – Choose 2-stage for max travel speed; 3-stage for maximum torque at given motor size.
- Motor Shaft Interface – Splined (DIN 5480) or keyed shaft; confirm bore diameter.
- Brake Release Pressure – 20-40 bar available hydraulic pressure to release spring brake.
- Biodegradable Oil Requirement – Specify HNBR seals if bio-hydraulic fluid is used on site.
Contact our application team for a ratio and torque selection report.
Brevini CTU3200 vs. EVER POWER EP-CTU3200
Disclaimer: EVER POWER references the Brevini riduttori CTU3200 model number solely to help customers identify a compatible replacement. We do not manufacture or imply affiliation with Brevini. No intellectual property of Brevini is reproduced. Our replacement unit is an independently designed product that is dimensionally and functionally compatible.
| Aspect | Brevini CTU3200 | EVER POWER EP-CTU3200 |
|---|---|---|
| Price | European OEM premium | Cost-competitive (significant saving) |
| Lead Time | 8-16 weeks | 3-5 weeks |
| Stage Flexibility | Fixed stage count per model | 2-or-3-stage on same flange platform |
| Cold Start Rating | Standard | -30 degC Arctic option available |
| OEM/ODM | Not available | Custom drawings accepted |
EVER POWER supplies matched hydraulic travel motors for a complete track drive unit. Ask us about motor pairing.
Quality Certifications and Service Commitment
- ISO 9001:2015 – Full batch traceability from steel melt to finished unit.
- CE Marking – EU Machinery Directive 2006/42/EC.
- 18-month warranty from dispatch.
- Dimensional drawing archive maintained for 10 years per unit serial number.
Read more at EVER POWER About Us.
Case Studies – Engineer Field Notes
| Country | Application | Feedback |
|---|---|---|
| Norway | 20 t excavator fleet for fjord-side infrastructure project | “Cold-start at -28 degC with no sluggishness. The floating sun design clearly handles the rocky terrain chassis flex we experience.” – Site Manager, Bergen contractor. |
| South Korea | Tunnelling crawler robot for subway expansion | “Slow-speed precision was critical for our robotic lining installation. EP-CTU3200 delivered consistent low-speed control throughout the 14-month project.” – Mechanical Lead, Seoul. |
| Argentina | Large tracked soybean harvester chassis replacement | “Six units replaced in one off-season. Cost saving allowed us to order two spare sets for inventory. Delivery was faster than any European supplier could offer.” – Procurement Manager, Rosario. |
Frequently Asked Questions
Q: Can I switch between 2-stage and 3-stage in the field?
A: Stage count is set at factory. Specify your required ratio range at order and we will configure correctly. Mixed-stage sets are available for fleets needing different travel speeds.
Q: Are HNBR seals an additional cost option?
A: HNBR seals are available at minimal additional cost. Please specify “bio-hydraulic oil service” at order.
Partner With EVER POWER
EVER POWER serves machine builders and maintenance fleets on six continents. Explore our planetary drive replacement range or get a quote today. Visit planetary-gear-box.top.
