Reliable operation
Balanced architecture and controlled thermal performance.
UAV ENGINE SERIES
BM-550
550 cm³ power unit for professional platforms
A professional 49.62 HP / 37 kW power unit built for demanding missions and seamless system integration.
Built in Estonia
Four-cylinder two-stroke boxer engine
Pusher and tractor systems
OEM support
Volume supply
BM-550
Technical specifications
Displacement550 cm³
Power49.62 HP / 37 kW
RPM range1300–7500 rpm
Static thrust70 kg @ 100 m / 61.8 kg @ 1800 m
Maximum take-off weight220 kg
Engine weight18.3 kg
Bore × stroke66 × 40 mm
Recommended propeller32×20; 30×23; 30×25
Lubrication ratio50:1
Fuel / consumptionCarburetor 14 L/h · EFI 10 L/h
Generator800 W / 2000 W
CoolingAir-cooled
Dimensions L × W × H430 × 340 × 400 mm
Number of cylinders4
Operating cycleTwo-stroke
IgnitionCDI with automatic timing advance
StarterOptional
Cylinder layoutHorizontally opposed
CrankshaftForged, seven-piece assembly
Firing sequenceOpposed cylinder pairs fire simultaneously; automatic switching at 500 rpm
Fuel systemTwo all-position diaphragm carburetors, without choke / injector nozzles
PistonOval-ground cast aluminium alloy
Cylinder materialCast aluminium alloy with a hardened ceramic nickel-silicon coating on the inner wall
Optional equipmentExhaust pipe, starter, generator
Ignition (catalog overview)Solid-state magneto ignition
Lubrication systemFuel/oil mixture lubrication
ApplicationPusher and tractor systems
Baltic Motors
Advantages
European components
Precision components from verified German and Czech suppliers.
Flexible integration
Configuration tailored to the platform and flight profile.
Service and support
Engineering assistance throughout the project lifecycle.
UAV / OEM
Applications
Monitoring and inspection
Infrastructure, forestry and border observation.
Agriculture
Field mapping and precision agriculture.
Heavy platforms
Logistics, extended missions and high payloads.
BM-550
Let’s discuss your project
Describe your platform and mission profile — our engineers will recommend the right configuration.
info@baltic-motors.ee
Tallinn, Estonia