توضیحات
EP-CTD3500 Planetary Track Drive Gearbox ?? 35,000 Nm
Brevini CTD3500 Compatible Replacement | EVER POWER
The EP-CTD3500 is EVER POWER’s high-performance planetary track drive gearbox for large tracked equipment, delivering 35,000 Nm output torque from a 3-to-4-stage architecture with a maximum ratio of 200:1. Engineered to replace the Brevini riduttori CTD3500, this unit is specified by OEMs and maintenance teams operating 40-60 t class machines where every hour of unplanned downtime has a direct impact on project profitability.
Product Overview
Served equipment types: 50 t+ hydraulic excavators, large tracked bulldozers, heavy pipeline crawler carriers, large offshore jack-up leg drives and extreme-duty tracked transfer platforms. The 4-stage configuration allows the EP-CTD3500 to reach 200:1 ratio from a single compact housing ?? eliminating the need for tandem gearbox installations common on very high-ratio applications. Optional condition monitoring sensor ports allow connection to machine telematics for real-time gear oil temperature and vibration trending.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-CTD3500 |
| Replaces | Brevini riduttori CTD3500 |
| Max Output Torque | 35,000 Nm |
| Gear Stages | 3 – 4 |
| Ratio Range | 35:1 – 200:1 |
| Max Input Speed | 2,200 rpm |
| Continuous Thermal Limit | 55 kW |
| Overload Capacity | 3.0x rated (momentary) |
| Housing Material | GGG50 + marine epoxy C5M coating |
| Lubrication | Synthetic ISO VG 320 or PAO VG 460 |
| Protection Class | IP68 |
| Operating Temp. | -35 degC to +90 degC |
| Approx. Weight | ~130 kg |
| Monitoring Ports | Oil temp PT100 boss, vibration M8 pad |
| Brake | Spring multi-disc failsafe / hydraulic release |
Working Principle
In 3-stage mode, the unit covers 35:1-100:1. Switching to 4-stage adds a final wide-face planet stage that extends the ratio to 200:1 within the same housing diameter. The wide-face planet gear ?? 30% longer tooth face than the standard width ?? increases the continuous power capacity of the output stage without requiring a larger housing.
The optional condition monitoring suite uses a PT100 temperature probe in the oil sump and an M8-threaded vibration sensor mounting pad on the housing. Data can be streamed to any major PLC or SCADA platform via 4-20 mA or Modbus RTU.
Core Advantages
|
★ Up to 200:1 Single Unit
4-stage achieves 200:1 without tandem gearbox ?? saves weight, space and maintenance points. |
★ Condition Monitoring Ready
Oil temperature and vibration sensor ports enable predictive maintenance integration. |
|
★ 3.0x Overload Capacity
Momentary overloads from buried obstacles are absorbed without catastrophic tooth failure. |
★ -35 degC Arctic Rated
PAO VG 460 oil + low-temperature FKM seals standard for northern climate operations. |
|
★ C5M Marine Epoxy Coating
720-hour salt spray rating. Suitable for offshore and coastal applications. |
Structure and Material Technology
The housing exterior carries a C5M marine epoxy coating system (primer + intermediate + topcoat, total DFT >= 250 microns, 720-hour salt spray). Gear steels are 18CrNiMo7-6 vacuum-arc-remelted (VAR) ?? aircraft turbine-grade material ?? carburised to 1.0-1.4 mm and ground to DIN ISO 1328 accuracy class 5. Wide-face planet gear blanks are individually balanced after machining. All external fasteners are stainless A4-80 grade for corrosion resistance in offshore and coastal environments.
Typical Application Scenarios
| Industry | Machine / Use | Key Requirement |
|---|---|---|
| Mining | 55 t excavator, hard rock mine | 3.0x overload handles buried rock impacts; condition monitoring tracks gearbox health 24/7. |
| Pipeline | Heavy crawler pipelayer, large diameter line | High torque at very slow speed during precision pipe lowering operations. |
| Offshore | Jack-up rig leg drive | C5M coating and IP68 sealing withstand continuous salt water spray and immersion. |
| Transfer | Industrial tracked transfer car, steel mill | 200:1 ratio provides ultra-slow controlled load movement; spring brake holds on inclines. |
Selection Guide
- Stage Count ?? 3-stage for 35:1-100:1; 4-stage for 100:1-200:1.
- Condition Monitoring ?? Specify if PT100 oil temperature probe and vibration sensor boss are required.
- Arctic Service ?? Specify PAO VG 460 + low-temperature seals for below -25 degC ambient.
- Offshore/Coastal ?? C5M marine epoxy coating and A4-80 fasteners are standard for this application.
- Classification Society ?? For offshore jack-up, state DNV, BV or ABS witnessing requirement at order.
Engage EVER POWER application engineers for a complete drive system study.
Brevini CTD3500 vs. EVER POWER EP-CTD3500
Important Notice: EVER POWER references the Brevini riduttori CTD3500 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-CTD3500 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspect | Brevini CTD3500 | EVER POWER EP-CTD3500 |
|---|---|---|
| Price | High OEM European tier | Competitive ?? lower total cost |
| Lead Time | 12-20 weeks | 4-7 weeks |
| Max Ratio (single unit) | Standard range | Up to 200:1 |
| Condition Monitoring | Not standard | Sensor ports standard option |
| Arctic Rating | -25 degC std | – 35 degC standard option |
EVER POWER supplies matched high-torque hydraulic travel motors for EP-CTD3500. Request a complete drive system package.
Quality Certifications and Service Commitment
- ISO 9001:2015 ?? VAR steel melt traceability to finished unit.
- CE Marking ?? Machinery Directive 2006/42/EC.
- DNV GL / Bureau Veritas inspection available on request.
- 18-month warranty from dispatch.
- Emergency spare parts dispatched within 48 hours for registered units.
More about our quality standards at EVER POWER About Us.
Case Studies ?? Engineer Field Notes
| Country | Application | Customer Feedback |
|---|---|---|
| Australia | 55 t excavator, magnetite iron ore mine, 6 units | “Hard magnetite generates extreme shock loads. The 3.0x overload rating has eliminated the tooth failures we previously experienced every 4,000 hours.” ?? Equipment Director, Pilbara. |
| Norway | Offshore jack-up rig leg drive, North Sea | “C5M coating and IP68 sealing held up perfectly after 2 winter seasons in the North Sea. Condition monitoring data flagged a bearing trend 4 weeks before failure ?? avoided a costly rig downtime.” ?? Rig Engineer, Stavanger. |
| China | Heavy tracked transfer car, large steel mill | “200:1 ratio lets us use a compact motor on a 200-tonne steel slab carrier. Energy saving per coil transferred is measurable.” ?? Plant Engineer, Wuhan. |
Frequently Asked Questions
Q: Can condition monitoring data be integrated with our existing Modbus SCADA?
A: Yes. The PT100 probe and vibration accelerometer connect to standard signal conditioners compatible with Modbus RTU, PROFIBUS or 4-20 mA analogue.
Q: Is DNV or BV certification available for offshore installations?
A: Yes. Third-party witness inspection by DNV GL or Bureau Veritas can be arranged. Specify at order.
Q: What is the maximum recommended oil change interval?
A: With PAO VG 460, first change at 500 hours, then every 3,000 hours or 18 months. With VG 320, every 2,500 hours or 12 months.
Partner With EVER POWER
EVER POWER supports the largest and most demanding tracked machine applications worldwide. Browse our full replacement CTD drive range, learn about EVER POWER, or contact our engineering team today.
