Haifeng Machinery

Sida Power 4BMZ vs Yunnei DEF30CBB5

The Sida Power 4BMZ and Yunnei DEF30CBB5 are both diesel generator engines in a similar power class. Both are rated at roughly 56 kVA. Displacement is 3.8 L versus 3 L. The table below compares their full specifications side by side.

SpecificationSida Power 4BMZYunnei DEF30CBB5
Headline rating56 kVA56 kVA
Standby (50 Hz)45 kWe—
Prime (50 Hz)40 kWe—
Standby (60 Hz)50 kWe—
Prime (60 Hz)45 kWe45 kWe
Displacement3.8 L3 L
ConfigurationL4L4
Cylinders44
Rated speed1,500 / 1,800 RPM1,800 RPM
FuelDieselDiesel
CoolingLiquid-CooledLiquid-Cooled
EmissionsApplication-dependentEuro Stage V
Dry weight390 kg—
OriginChinaChina

Choosing between Sida Power 4BMZ and Yunnei DEF30CBB5

Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing.