Audible noise is evidence to investigate, but fault location depends on whether the sound tracks speed, torque or the machine structure.
Helical Gearbox Noise Diagnosis by Speed and Load
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EP-R127 Inline Helical Gear Reducer – Heavy Load Gearmotor
The EP-R127 inline helical gear reducer provides approximately 18,000 Nm output torque and a permitted radial load of ~55,000 N—suited for quarrying primary crusher conveyors, sugar mill drives, and mine haulage systems. IP55. MOQ: 1–5 sample units; mixed orders from ~USD 1,500; lead time 10–25 working days.
EP-R127 Inline Helical Gear Reducer – Heavy Load Gearmotor
The EP-R127 inline helical gear reducer is the frame-127 model in Ever Power's industry-proven R-series inline helical gearmotor lineup. Designed for demanding industrial applications that require reliable, high-efficiency speed reduction with multi-orientation mounting flexibility, the EP-R127 delivers maximum output torque of 18,000 Nm and supports permitted radial loads up to 55,000 N N. Motor power compatibility spans from 0.18 kW through high-power configurations, with gear ratios ranging from i = 3.57 to i = 199.81. The EP-R127 is the natural choice for quarrying, sugar processing, large conveyor drives applications where performance, compactness, and low maintenance cost are all priorities. Browse the complete Ever Power gear reducer range or contact us for a tailored application review.
The EP-R127 steps into the ultra-high-torque category with 18,000 Nm output, filling the gap between standard industrial gearmotors and purpose-built heavy drive solutions—delivering catalogue availability and standard lead times at industrial-grade torque.
EP-R127 — standard foot-mount (R) inline helical gear reducer
Available Configurations
R127
Foot-mount, solid output shaft. Standard horizontal installation for conveyor, mixer, and industrial drives.
Foot-mount, solid output shaft. Standard horizontal installation for conveyor, mixer, and industrial drives.
RF127
Flange-mount output variant. The flanged housing mates directly to the driven machine's input face for alignment-free installation.
Flange-mount output variant. The flanged housing mates directly to the driven machine's input face for alignment-free installation.
R127 with Pre-stage
Two or three-stage combinations extending gear ratio coverage while maintaining the EP-R127 output shaft dimensions. Contact Ever Power for specific pre-stage options.
Two or three-stage combinations extending gear ratio coverage while maintaining the EP-R127 output shaft dimensions. Contact Ever Power for specific pre-stage options.
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Frame Size | 127 |
| Motor Power Range | 0.18 kW – 160 kW (config.) |
| Gear Ratio (i) | 3.57 – 199.81 |
| Max Output Torque | 18,000 Nm |
| Gear Unit Weight (foot/flange) | ~330 kg / ~355 kg |
| Max Permitted Radial Load | 55,000 N N |
| Mounting Positions | M1 – M6 |
| Lubrication | Synthetic gear oil, sealed for life |
| Protection Class | IP55 standard |
| Transmission Efficiency | > 96% per stage |
| Housing Material | Cast iron / die-cast aluminium |
Selection Parameter Table – EP-R127
| Output Speed / Input Speed [rpm] | Output Torque [Nm] | Gear Ratio i | Radial Load [N] | Service Factor fB | Model |
|---|---|---|---|---|---|
| 5637 | 14 | 0.27 | 55195 | 1.50 | R127 |
| 4809 | 16 | 0.31 | 56060 | 1.75 | R127 |
| 4205 | 18 | 0.36 | 56620 | 2.00 | R127 |
| 3996 | 18 | 0.36 | 56810 | 2.10 | R127 |
| 3505 | 21 | 0.41 | 57190 | 2.40 | R127R107 |
| 2700 | 27 | 0.53 | 57510 | 3.10 | R127R107 |
Mounting Positions M1–M6
Available mounting positions M1–M6 for the R-series (foot-mount models)
M1: Output shaft horizontal right — standard for conveyor and pump drives.
M2: Output shaft horizontal left — mirror-image installation.
M3: Shaft downward — agitators, thickener rakes, screw conveyors.
M4: Shaft upward — overhead drives, fan towers, elevated conveyors.
M5: Horizontal motor, angled shaft down — compact side-entry layouts.
M6: Horizontal motor, angled shaft up — inclined conveyor and upward feed drives.
Model Number Explanation
Model number designation — Ever Power R-series inline helical gearmotor
| Code Element | Meaning | Example |
|---|---|---|
| R | Inline helical gear series | R |
| F (optional) | Flange output; absent = foot mount | RF127 |
| 127 | Frame size designation | R127 |
| Pre-stage suffix | Additional gear stage for extended ratio | R127R77 |
Industry Applications
Heavy Conveyor Systems
Belt conveyors, apron conveyors, and bucket elevators in mining, quarrying, and bulk material handling facilities specify the EP-R127 for its high radial load capacity and reliable sealed lubrication.
Belt conveyors, apron conveyors, and bucket elevators in mining, quarrying, and bulk material handling facilities specify the EP-R127 for its high radial load capacity and reliable sealed lubrication.
Industrial Mixing & Processing
Reactor agitators, thickener rake drives, and large mixer drives benefit from the EP-R127's high starting torque and consistent speed characteristics under variable-viscosity loads.
Reactor agitators, thickener rake drives, and large mixer drives benefit from the EP-R127's high starting torque and consistent speed characteristics under variable-viscosity loads.
Quarrying, Sugar Processing, Large Conveyor Drives
Applications in quarrying, sugar processing, large conveyor drives environments rely on the EP-R127 for its combination of output torque, sealed maintenance-free operation, and multi-orientation mounting flexibility.
Applications in quarrying, sugar processing, large conveyor drives environments rely on the EP-R127 for its combination of output torque, sealed maintenance-free operation, and multi-orientation mounting flexibility.
Customer Case Studies
Brazil · Sugar & Ethanol Industry
★★★★★
A Brazilian sugar refinery integrated EP-R127 gearmotors into their cane shredder conveyor pre-conveyor systems. Heavy starting torque under full cane load was the primary specification. "We needed high torque margin for wet-season cane, which arrives at maximum weight. The EP-R127 handles these peak load conditions without thermal overload. We've run three full crushing seasons without a gearbox-related stop."
Australia · Quarrying Operations
★★★★★
An Australian quarry operator installed EP-R127 drives on their primary crusher feed belt tail drives. The units must withstand rock impact loads transmitted through the belt tension. "Service factor selection at fB = 2.0 gave us the margin we needed for rock-impact transients. The units have performed faultlessly for 19 months, outperforming the flanged bevel-helical units they replaced, which were failing every 8–10 months."
South Africa · Mining Industry
★★★★☆
A South African gold mine selected EP-R127 gearmotors for their shaft haulage man-riding equipment conveyor system. Safety reliability and regulatory compliance were paramount. "The gear units were subjected to full engineering review by our independent safety auditor. The EP-R127 passed all structural and fatigue life requirements with margin. Safety certification was obtained without modification, which is unusual for catalogue gearmotors in this torque range."
Frequently Asked Questions
Why Specify the EP-R127 from Ever Power?
Ever Power delivers the EP-R127 inline helical gear reducer with full application engineering support, including selection assistance, 3D CAD data, dimensional drawings, and post-delivery commissioning guidance. Our technical team has experience across the industries described above and can advise on motor pairing, mounting configuration, and service factor selection for your specific application. Visit the Ever Power company page to learn more about our engineering approach, or go straight to the contact page to reach our technical sales team.
Request EP-R127 Pricing, Datasheets & Application Support
Tell us your speed, torque, mounting, and environment requirements. Sample orders and mixed-model inquiries welcome.
Blogs Updated
Coupling Alignment for Inline Helical Gearbox Installations
Flexible couplings accommodate limited relative movement, but poor shaft alignment still affects bearings and seals.
Helical Gearbox Oil Leak Diagnosis and Seal Protection
Oil observed on a housing may have traveled from a vent, joint or shaft seal; finding the first wet point is essential.