Planetary gear reducer RP56

coaxialkeyed bore20 - 50 Nm

Product Overview
RP56 is a planetary gearbox (planetary gear motor / gearbox) designed for heavy-duty mobile platforms and industrial lifting equipment. Nominal outer diameter: 60 mm (confirm final outer-dimension on released drawing before design/ordering). Standard output shaft diameter: 12 mm. Available gear ratio range: 1:3.6 to 1:307. Rated torque up to 45 N·m, peak momentary torque up to 110 N·m, with standard ball-bearing supported output.

Key Facts for Engineering Buyers

• Product category: Planetary Gear Motors & Gearboxes
• Model: RP56
• Manufacturer / Brand: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: heavy-duty AGVs & mobile robots, industrial winches and lifting equipment

Specification Signals

• Outer diameter (nominal): 60 mm (confirm on drawing)
• Output shaft diameter: 12 mm (keyway / double D / threaded options)

Core Applications & Solutions

• Heavy-duty AGVs & Mobile Robots: Suited for port logistics AGVs, heavy-load AMR chassis and service robots. RP56 delivers up to 45 N·m continuous rated torque and—supported by ball bearings—can directly drive hub/wheel systems for reliable heavy-payload movement.
• Industrial Winches & Construction Machinery: Applicable for electric winches, lifting devices and PV tracking systems. 400 N radial load capacity and 300 N press-in strength support robust outdoor performance.

RP56 Gearbox Technical Specifications
Gear Ratio | Stages | Length L (mm) | Rated Torque | Max Momentary Torque | Efficiency
1/3.6 ~ 1/5.33 | 1 | 40.3 ±0.5 | 4 N·m | 12 N·m | 90%
1/13 ~ 1/28 | 2 | 53.8 ±0.5 | 18 N·m | 50 N·m | 81%
1/43 ~ 1/121 | 3 | 67.2 ±0.5 | 36 N·m | 100 N·m | 73%
1/154 ~ 1/307 | 4 | 80.6 ±0.5 | 45 N·m | 110 N·m | 66%

Mechanical Parameters

• Output configuration: ball-bearing supported output shaft
• Maximum radial load: 400 N
• Maximum axial load: 120 N
• Maximum press-in force: 300 N

Customization and Sourcing Notes

• OEM/ODM customization supported for voltage, speed, torque and shaft design
• Output shaft options: 12 mm heavy shaft; keyway, double D-cut or threaded shaft available
• Protection upgrade options: optional IP54 / IP65 sealing for dusty or humid outdoor environments
• Control, noise and EMC targets can be addressed upon request

Technical Characteristics / Specifications

• Model: RP56
• Nominal outer diameter: 60 mm
• Output shaft diameter: 12 mm (keyway customizable)
• Bearing type: standard ball bearings
• Gear ratio ranges: 1:3.6–1:5.33 (1 stage); 1:13–1:28 (2 stages); 1:43–1:121 (3 stages); 1:154–1:307 (4 stages)
• Lengths L by stage: 1-stage 40.3 ±0.5 mm; 2-stage 53.8 ±0.5 mm; 3-stage 67.2 ±0.5 mm; 4-stage 80.6 ±0.5 mm
• Rated torque by stage: 1-stage 4 N·m; 2-stage 18 N·m; 3-stage 36 N·m; 4-stage 45 N·m
• Max momentary torque by stage: 1-stage 12 N·m; 2-stage 50 N·m; 3-stage 100 N·m; 4-stage 110 N·m
• Efficiency by stage: 90%, 81%, 73%, 66% (by stage)
• Recommended uses: heavy mobile platforms, industrial lifting systems, outdoor engineering equipment