{"id":1019,"date":"2026-08-11T07:35:42","date_gmt":"2026-08-11T07:35:42","guid":{"rendered":"https:\/\/ever-powers.com\/2026\/08\/11\/rc-61-rotary-cutter-gearbox-replacement-guide\/"},"modified":"2026-08-11T07:35:42","modified_gmt":"2026-08-11T07:35:42","slug":"rc-61-rotary-cutter-gearbox-replacement-guide","status":"publish","type":"post","link":"https:\/\/ever-powers.com\/ja\/application\/rc-61-rotary-cutter-gearbox-replacement-guide\/","title":{"rendered":"RC-61 Rotary Cutter Gearbox Replacement: Dimensions, Compatibility & Selection Guide"},"content":{"rendered":"
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RC-61 Rotary Cutter Gearbox: OEM Replacement Technical Reference<\/h2>\n

The RC-61 is one of the most widely deployed rotary cutter gearbox form factors in North American and Australian pasture management and roadside maintenance equipment. When the time comes to replace a worn or damaged unit, choosing the correct interchange requires verifying dimensional, torque, and interface parameters \u2014 not just matching a model number.<\/p>\n

This guide provides the complete technical reference for the EP-RC61 replacement gearbox manufactured by HangZhou Ever Power Transmission Co. Ltd., and explains how to confirm compatibility with your existing cutter deck.<\/p>\n

\""Rotary\"<\/p>\n

EP-RC61 Technical Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nEP-RC61 (Direct replacement for Omni RC-61)<\/td>\n<\/tr>\n
Torque Rating<\/td>\n461 \u2013 1,094 N\u00b7m (4,803 \u2013 9,683 lb-in)<\/td>\n<\/tr>\n
Available Gear Ratios<\/td>\n1.21:1 \/ 1:1 \/ 1:1.21 \/ 1:1.46 \/ 1:1.93<\/td>\n<\/tr>\n
Internal Gear Type<\/td>\nForged Spiral Bevel Gears<\/td>\n<\/tr>\n
Bearings<\/td>\nPremium Tapered Roller Bearings<\/td>\n<\/tr>\n
Oil Capacity<\/td>\n32 oz (0.95 L) \u2014 SAE 80W-90 GL-5<\/td>\n<\/tr>\n
\u6b63\u5473\u91cd\u91cf<\/td>\n81 lbs (36.7 kg)<\/td>\n<\/tr>\n
Flange Diameter (D1)<\/td>\n9.5\u2033 (242.0 mm)<\/td>\n<\/tr>\n
Bolt Hole Pattern (E1)<\/td>\n8.0\u2033 (203.2 mm) BCD<\/td>\n<\/tr>\n
Mounting Holes<\/td>\n4 \u00d7 0.787\u2033 (20 mm) diameter<\/td>\n<\/tr>\n
Hub Pilot Diameter (H)<\/td>\n2.5\u2033 (63.5 mm)<\/td>\n<\/tr>\n
Housing Material<\/td>\nHigh-Grade ASTM Gray Cast Iron<\/td>\n<\/tr>\n
HP Rating<\/td>\n40\u201360 HP (light to medium duty)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Verifying Deck Compatibility Before Ordering<\/h2>\n

Before ordering an RC-61 replacement, physically measure or confirm the following from your existing unit or cutter deck drawing:<\/p>\n