{"id":1939,"date":"2026-04-17T08:49:58","date_gmt":"2026-04-17T08:49:58","guid":{"rendered":"https:\/\/planetary-gear-box.top\/product\/ever-power-ep-ec4091-planetary-gearbox-replacement-of-brevini-riduttori-ec4091\/"},"modified":"2026-04-17T08:49:58","modified_gmt":"2026-04-17T08:49:58","slug":"ever-power-ep-ec4091-planetary-gearbox-replacement-of-brevini-riduttori-ec4091","status":"publish","type":"product","link":"https:\/\/planetary-gear-box.top\/fa\/product\/ever-power-ep-ec4091-planetary-gearbox-replacement-of-brevini-riduttori-ec4091\/","title":{"rendered":"EVER POWER EP-EC4091 Planetary Gearbox Replacement Of Brevini Riduttori EC4091"},"content":{"rendered":"

EP-EC4091 4-Stage Compact High-Ratio Planetary Gearbox<\/h1>\n

Brevini Riduttori EC4091 Compatible Replacement | EVER POWER<\/p>\n

The EC4-series<\/strong> delivers 4-stage ratio coverage up to 400:1 in EVER POWER’s most compact RPM-series housing ?? targeting applications where both extreme ratio and minimum housing size are simultaneously required. It serves compact winch drives, small tracked machine travel drives, micro-positioning systems, compact industrial hoist units and tight-envelope high-reduction drives<\/strong> that cannot accommodate full-size 4-stage housing dimensions.<\/p>\n

The EP-EC4091<\/strong> replaces the Brevini riduttori EC4091<\/strong> ?? a 4-stage compact planetary gearbox delivering approximately 26,400 Nm<\/strong> output torque, ratio range 30:1 – 400:1, and IP rating IP65.<\/p>\n

\"EP-EC4091<\/p>\n

Technical Parameters<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nEP-EC4091<\/td>\n<\/tr>\n
Replaces<\/td>\nBrevini riduttori EC4091<\/td>\n<\/tr>\n
Output Torque<\/td>\n26,400 Nm<\/td>\n<\/tr>\n
Gear Stages<\/td>\n4<\/td>\n<\/tr>\n
Ratio Range<\/td>\n30:1 – 400:1<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n3,000 rpm<\/td>\n<\/tr>\n
Efficiency<\/td>\n>= 92%<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP65<\/td>\n<\/tr>\n
Approx. Weight<\/td>\n~176 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Working Principle<\/h2>\n

\"EVER<\/p>\n

Four planetary stages are packed coaxially in the compact housing using thin-wall ring gear sections<\/strong> and optimised planet-to-ring gear clearance. The output shaft features a large-diameter bore option<\/strong> allowing a hollow-through shaft configuration ?? enabling the EC4 to be mounted directly on a drive shaft or screw without a separate shaft-to-shaft coupling, which is especially valuable in very compact installations.<\/p>\n

Core Advantages<\/h2>\n\n\n\n\n
\n
★ Up to 400:1 Compact<\/strong>
4-stage reduction in smallest available housing diameter.<\/div>\n<\/td>\n
\n
★ Hollow Through-Shaft Option<\/strong>
Mount directly on drive screw or shaft ?? eliminates coupling.<\/div>\n<\/td>\n<\/tr>\n
\n
★ Thin-Wall Ring Construction<\/strong>
Maximum torque density in minimum radial space.<\/div>\n<\/td>\n
\n
★ Compact High-Ratio<\/strong>
Replaces tandem gearbox arrangements in space-constrained machines.<\/div>\n<\/td>\n<\/tr>\n
\n
★ Direct EC4-Series Replacement<\/strong>
Same mounting pattern as original Brevini unit.<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n<\/table>\n

Structure and Material Technology<\/h2>\n

\"EVER<\/p>\n

Thin-wall ring gear sections are machined from 42CrMo4 through-hardened steel<\/strong> for maximum stiffness in the reduced wall thickness. Planet gears use 17CrNiMo6 carburised steel<\/strong>, ground to DIN 5. The hollow through-shaft option uses a precision-ground bore to H6 tolerance<\/strong> for interference or clearance fit on the drive shaft. Seals are FKM fluoroelastomer<\/strong> for synthetic oil.<\/p>\n

Typical Application Scenarios<\/h2>\n\n\n\n\n\n\n\n\n
Industry<\/th>\nApplication<\/th>\nKey Benefit<\/th>\n<\/tr>\n<\/thead>\n
Paper<\/td>\nPulp refiner drive<\/td>\nHigh-power continuous drive for paper pulp refining process.<\/td>\n<\/tr>\n
Chemical<\/td>\nLarge reactor agitator<\/td>\nReliable slow-speed drive for large-volume chemical reactors.<\/td>\n<\/tr>\n
Mining<\/td>\nOre crusher belt feeder<\/td>\nHigh torque for dense ore feed on belt feeder conveyor.<\/td>\n<\/tr>\n
Water<\/td>\nLarge pump drive, treatment plant<\/td>\nAny-orientation mounting for varied pump installation designs.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Selection Guide<\/h2>\n
    \n
  1. Required Output Torque (Nm)<\/strong> ?? Confirm peak and continuous with safety factor (1.3-2.0 typical).<\/li>\n
  2. Gear Ratio<\/strong> ?? Motor speed (rpm) \/ required output speed (rpm).<\/li>\n
  3. Stage Count<\/strong> ?? 4-stage (4-stage compact) provides ratio 30:1 – 400:1.<\/li>\n
  4. Motor Interface<\/strong> ?? Flange type (SAE\/ISO metric), shaft diameter and key.<\/li>\n
  5. Operating Environment<\/strong> ?? IP class, ambient temperature, mounting orientation.<\/li>\n<\/ol>\n

    Contact our engineers<\/a> for a free application sizing review.<\/p>\n

    Brevini EC4091 vs. EVER POWER EP-EC4091<\/h2>\n

    Notice:<\/strong> EVER POWER references Brevini riduttori EC4091 solely for customer cross-reference. We are not affiliated with Brevini. Our EP-EC4091 is an independently designed product that is dimensionally and functionally compatible. No Brevini trademarks or intellectual property are reproduced.<\/p>\n\n\n\n\n\n\n\n\n\n
    Aspect<\/th>\nBrevini EC4091<\/th>\nEVER POWER EP-EC4091<\/th>\n<\/tr>\n<\/thead>\n
    Price<\/td>\nOEM European premium<\/td>\nCompetitive ?? 30-45% saving typical<\/td>\n<\/tr>\n
    Lead Time<\/td>\n6-16 weeks depending on size<\/td>\n2-6 weeks<\/td>\n<\/tr>\n
    Gear Stages<\/td>\n4<\/td>\n4<\/td>\n<\/tr>\n
    Warranty<\/td>\n12 months standard<\/td>\n18 months standard<\/td>\n<\/tr>\n
    Customisation<\/td>\nLimited<\/td>\nOEM\/ODM drawings accepted<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \"EVER
    \nEVER POWER also supplies matched electric and hydraulic motors<\/strong> for complete drive system packages. Enquire about motor pairing.<\/a><\/p>\n

    Quality Certifications and Service Commitment<\/h2>\n