Description
EP-EM1091 Single-Stage High-Speed Planetary Gearbox
Brevini Riduttori EM1091 Compatible Replacement | EVER POWER
The EM1-series is a single-stage planetary gearbox delivering the highest efficiency in the EC/EM family. With up to 98% efficiency per pass and input speed up to 6,000 rpm, it is the preferred choice for servo motor direct coupling, high-speed spindle drives, precision indexing and motion control applications where minimal energy loss and low backlash at high input speed are the primary requirements.
The EP-EM1091 replaces the Brevini riduttori EM1091 ?? a single-stage planetary gearbox delivering approximately 4,400 Nm output torque, ratio range 3:1 – 10:1, and IP rating IP65.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-EM1091 |
| Replaces | Brevini riduttori EM1091 |
| Output Torque | 4,400 Nm |
| Gear Stages | 1 |
| Ratio Range | 3:1 – 10:1 |
| Max Input Speed | 6,000 rpm |
| Efficiency | >= 98% |
| Protection Class | IP65 |
| Approx. Weight | ~60 kg |
Working Principle
A single planet stage receives motor input on the sun gear shaft. Planet gears orbit the sun and react against a fixed ring gear, multiplying torque at the planet carrier output. The single-stage architecture provides the lowest possible gear mesh losses ?? critical for servo-driven axes where heat generation in a compact housing would otherwise require motor de-rating. Angular contact output bearings handle combined axial and radial loads from cantilever-mounted drive elements.
Core Advantages
|
● 98% Efficiency
Single-stage ?? lowest gear mesh loss in the EC/EM range. |
● 6,000 rpm Input Speed
Servo motor compatible ?? no input speed de-rating required. |
|
● Minimal Backlash
Tight planet tolerance gives precise positioning response. |
● Compact Single-Stage Housing
Shortest axial length in size class ?? fits servo motor adaptor plates. |
|
● Direct Brevini EM1-Series Fit
Same flange and shaft dimensions ?? zero machine modification. |
Structure and Material Technology
Housing is precision-cast from GGG40 aluminium-alloy or GGG50 ductile iron depending on size. Planet gears use 20CrMnTi case-hardening steel, carburised and ground to ISO class 5 accuracy. Angular contact ball bearing pairs on the output shaft provide pre-loaded zero-play support for reversing servo loads. All seals are FKM fluoroelastomer rated for synthetic oil at up to 120 degC.
Typical Application Scenarios
| Industry | Application | Key Benefit |
|---|---|---|
| Paper | Pulp refiner drive | High-power continuous drive for paper pulp refining process. |
| Chemical | Large reactor agitator | Reliable slow-speed drive for large-volume chemical reactors. |
| Mining | Ore crusher belt feeder | High torque for dense ore feed on belt feeder conveyor. |
| Water | Large pump drive, treatment plant | Any-orientation mounting for varied pump installation designs. |
Selection Guide
- Required Output Torque (Nm) ?? Confirm peak and continuous with safety factor (1.3-2.0 typical).
- Gear Ratio ?? Motor speed (rpm) / required output speed (rpm).
- Stage Count ?? 1-stage (single-stage) provides ratio 3:1 – 10:1.
- Motor Interface ?? Flange type (SAE/ISO metric), shaft diameter and key.
- Operating Environment ?? IP class, ambient temperature, mounting orientation.
Contact our engineers for a free application sizing review.
Brevini EM1091 vs. EVER POWER EP-EM1091
Notice: EVER POWER references Brevini riduttori EM1091 solely for customer cross-reference. We are not affiliated with Brevini. Our EP-EM1091 is an independently designed product that is dimensionally and functionally compatible. No Brevini trademarks or intellectual property are reproduced.
| Aspect | Brevini EM1091 | EVER POWER EP-EM1091 |
|---|---|---|
| Price | OEM European premium | Competitive ?? 30-45% saving typical |
| Lead Time | 6-16 weeks depending on size | 2-6 weeks |
| Gear Stages | 1 | 1 |
| Warranty | 12 months standard | 18 months standard |
| Customisation | Limited | OEM/ODM drawings accepted |
EVER POWER also supplies matched electric and hydraulic motors for complete drive system packages. Enquire about motor pairing.
Quality Certifications and Service Commitment
- ISO 9001:2015 certified manufacturing and quality management.
- CE Marking ?? EU Machinery Directive 2006/42/EC compliant.
- 18-month warranty from shipment date covering all EP-EM1091 manufacturing defects.
- 48-hour technical response for field issues.
- Seal kits and wear parts stocked for rapid dispatch.
Learn more at EVER POWER About Us.
Case Studies ?? Engineer Field Notes
| Country | Application | Customer Feedback |
|---|---|---|
| China | Underground mining conveyor drive | “Compact body was critical in our restricted gallery. 3,000 hours with no issues.” ?? Mine Engineer, Shandong. |
| South Africa | Steel plant roll table drive | “Consistent roll speed improved bar surface quality significantly.” ?? Process Engineer, Johannesburg. |
| India | Cement screw conveyor drive, large plant | “Cost saving over OEM allowed us to order a spare set as insurance stock.” ?? Procurement Director, Mumbai. |
Frequently Asked Questions
Q: Is the EM1-series compatible with servo motor feedback encoders?
A: Yes. The housing flange accepts standard servo motor adaptors with encoder feedback cable routing channels. Specify your motor make and model for confirmation.
Q: What is the rated backlash?
A: Standard backlash is <= 8 arcmin. A premium reduced-backlash option (<= 5 arcmin) is available for high-precision servo axes ?? specify at order.
Partner With EVER POWER
EVER POWER supports OEM machine builders and maintenance teams worldwide. Browse our full replacement range, explore our capabilities, or contact us today for a fast quotation. Visit planetary-gear-box.top.
