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
read more
EP-R107 Inline Helical Gearmotor – Large Frame Speed Reducer
The EP-R107 helical gear reducer reaches up to 7,500 Nm output torque with a radial load rating of 35,530 N, engineered for bulk material handling, paper mills, mining reclaimers, and large fan drives. IP55. MOQ: 1–5 sample units; mixed orders from ~USD 1,500; lead time 10–25 working days.
EP-R107 Inline Helical Gearmotor – Large Frame Speed Reducer
The EP-R107 inline helical gear reducer is the frame-107 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-R107 delivers maximum output torque of 7500 Nm and supports permitted radial loads up to 35,530 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-R107 is the natural choice for bulk handling, mining, paper mills, large fans 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.
At 7,500 Nm peak output torque and a radial load rating of 35,530 N, the EP-R107 competes with purpose-built heavy industrial gear units at a significantly lower unit cost and in standard catalogue lead times.
EP-R107 — standard foot-mount (R) inline helical gear reducer
Available Configurations
R107
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.
RF107
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.
R107 with Pre-stage
Two or three-stage combinations extending gear ratio coverage while maintaining the EP-R107 output shaft dimensions. Contact Ever Power for specific pre-stage options.
Two or three-stage combinations extending gear ratio coverage while maintaining the EP-R107 output shaft dimensions. Contact Ever Power for specific pre-stage options.
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Frame Size | 107 |
| Motor Power Range | 0.18 kW – 160 kW (config.) |
| Gear Ratio (i) | 3.57 – 199.81 |
| Max Output Torque | 7500 Nm |
| Gear Unit Weight (foot/flange) | 198–209 kg / 203–215 kg |
| Max Permitted Radial Load | 35,530 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-R107
| Output Speed / Input Speed [rpm] | Output Torque [Nm] | Gear Ratio i | Radial Load [N] | Service Factor fB | Model |
|---|---|---|---|---|---|
| 4640 | 10 | 0.31 | 27550 | 1.00 | R107 |
| 3959 | 11 | 0.36 | 30780 | 1.15 | R107 |
| 3593 | 13 | 0.40 | 32015 | 1.25 | R107 |
| 3142 | 14 | 0.46 | 33440 | 1.45 | R107 |
| 2700 | 17 | 0.54 | 34090 | 1.70 | R107 |
| 2448 | 19 | 0.59 | 34675 | 1.85 | R107R77 |
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 | RF107 |
| 107 | Frame size designation | R107 |
| Pre-stage suffix | Additional gear stage for extended ratio | R107R77 |
Industry Applications
Heavy Conveyor Systems
Belt conveyors, apron conveyors, and bucket elevators in mining, quarrying, and bulk material handling facilities specify the EP-R107 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-R107 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-R107'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-R107's high starting torque and consistent speed characteristics under variable-viscosity loads.
Bulk Handling, Mining, Paper Mills, Large Fans
Applications in bulk handling, mining, paper mills, large fans environments rely on the EP-R107 for its combination of output torque, sealed maintenance-free operation, and multi-orientation mounting flexibility.
Applications in bulk handling, mining, paper mills, large fans environments rely on the EP-R107 for its combination of output torque, sealed maintenance-free operation, and multi-orientation mounting flexibility.
Customer Case Studies
Norway · Pulp & Paper Industry
★★★★★
A Norwegian pulp mill selected EP-R107 gearmotors for the primary log conveyor feed drives at their kraft pulping facility. High torque and resistance to wet outdoor conditions were mandatory. "We chose the EP-R107 after testing two competing units. Its torque headroom at low ratio and the IP55 sealed housing gave us confidence for outdoor log-yard installation. After two Nordic winters of continuous operation, the units show no signs of weathering or lubricant degradation."
Australia · Iron Ore Mining
★★★★★
An iron ore processing plant in the Pilbara region uses EP-R107 drives on their stackers and reclaimers. The units operate in extreme heat (ambient up to 48°C) and abrasive dust. "We initially had concerns about thermal performance at 48°C ambient. The EP-R107 ran within specification with no thermal shutdowns even during the summer peak. We've since standardised this model across our reclaimer drive package."
Egypt · Sugar Cane Processing
★★★★☆
An Egyptian sugar producer integrated EP-R107 gearmotors into their bagasse conveyor system. The units must start heavily loaded multiple times per shift. "High start-under-load torque was the critical requirement. The EP-R107 handles this demanding duty cycle without the thermal creep or lubricant degradation issues we had with shaft-mounted worm units. Maintenance has been reduced to annual visual inspection only."
Frequently Asked Questions
Why Specify the EP-R107 from Ever Power?
Ever Power delivers the EP-R107 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-R107 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.