Planetary micro-gearbox RO37

coaxialsolid-shaft0.5 - 1 Nm

Product Overview
RO37 is a 37 mm planetary gearbox / gear motor designed for cost-effective low-speed, high-torque intermittent-duty applications such as vending machines and rotating signage. The gearbox uses oil-impregnated sleeve bearings and powder-metal planetary/ring gears, and its output shaft supports press-fit assembly up to 200 N.

Key Facts for Engineering Buyers

• Product category: Planetary Gear Motors & Gearboxes
• Motor family: Planetary gear motor / gearbox (37 mm series)
• Brand / manufacturer: KWC Motor, Dongguan KWC Machinery Co., Ltd.
• Typical applications: vending machines, coffee grinder mechanisms, ATM transmissions, rotating advertising displays, valve actuators

Specification Signals

• Outer diameter: 37 mm
• Typical shaft: 6 mm (D-cut 5.5 mm)
• Available gear ratios (examples): 1:10; 1:30 ~ 1:33.3; 1:50 ~ 1:100; 1:120 ~ 1:300
• Rated torque: up to 1.0 N·m (depending on ratio)

Customization and Sourcing Notes
KWC Motor supports OEM/ODM customization for voltage, motor speed, torque, shaft type (standard D-shaft, threaded, double-flat), cable or connector, gearbox integration and EMC/noise targets. Final pricing and lead time are confirmed after application, specification and quantity are agreed.

Core Applications & Solutions

• Vending & Commercial Equipment: Suitable for dispensing motors, coffee grinder drives and ATM mechanisms where stable low-speed, high-torque output (up to 1.0 N·m) and quiet intermittent operation are required.
• Rotating Signage & Valve Actuation: Used in rotating advertising lightboxes, stage lighting and HVAC/plumbing valve actuators. Reinforced axial support allows direct press-fit of pulleys or gears (press-in capacity up to 200 N), facilitating automated assembly.

RO37 Gearbox Technical Specifications

• Ratio 1/10 | Length L 20.0 ±0.5 mm | Rated torque 0.1 N·m | Max momentary torque 0.3 N·m | Efficiency 81% | Rotation: same direction
• Ratio 1/30 ~ 1/33.3 | Length L 22.5 ±0.5 mm | Rated torque 0.4 N·m | Max momentary torque 1.2 N·m | Efficiency 73% | Rotation: reverse
• Ratio 1/50 ~ 1/100 | Length L 25.0 ±0.5 mm | Rated torque 1.0 N·m | Max momentary torque 3.0 N·m | Efficiency 66% | Rotation: same direction
• Ratio 1/120 ~ 1/300 | Length L 27.5 ±0.5 mm | Rated torque 1.0 N·m | Max momentary torque 3.0 N·m | Efficiency 59% | Rotation: reverse

Mechanical Parameters

• Gearbox outer diameter: 37 mm
• Output shaft diameter: 6 mm (D-cut 5.5 mm)
• Maximum allowable output-shaft press-in force: 200 N (for pulley/gear installation)
• Bearing type: oil-impregnated sleeve bearings (standard)
• Gears: powder-metal planetary and ring gears (metal, not plastic)
• Motor pinion: 15° right-hand helix angle for smoother engagement

Why Choose the KWC RO37

• Reinforced axial support enabling press-fit assembly up to 200 N to simplify production processes.
• Powder-metal gears for wear resistance while maintaining cost efficiency.
• Multiple shaft and mounting options compatible with standard 37 mm DC motor patterns to ease integration.
• 100% outgoing inspection for noise, current and appearance; RoHS/REACH compliant.

Purchasing FAQ (selected)

• Difference vs RP36: RP36 is a heavy-duty version with ball bearings and rated torque up to 5.0 N·m for high-load applications; RO37 uses sleeve bearings and is optimized for cost-performance with rated torque up to 1.0 N·m.
• Meaning of max output-shaft press-in force 200 N: Up to 200 N axial press force can be applied when fitting pulleys or gears without damaging internal structure—useful for automated assembly lines.
• Gears material: Ring gear and planetary gears are powder-metal parts or other metallic materials for higher strength and wear resistance.