Sida Power
Sida Power 4BMZ
BM46E/BM55E
Sida Power 4BMZ is a 4-cylinder turbocharged diesel generator-drive engine for BM46E/BM55E generator-set pairings. The supplied Sida generator-set workbook lists 50 kW prime / 55 kW standby at 1500 rpm and 55 kW prime / 60 kW standby at 1800 rpm, with 3.8 L displacement, 17.5:1 compression ratio, and 390 kg net weight.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-09-05
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 56 kVA
- Electrical Output
- 45 kWe
- Cylinders
- L4
- Displacement
- 3.8 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 50 | 40 | 50 |
| Standby Power | 55 | 45 | 56.3 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 55 | 45 | 56.3 |
| Standby Power | 60 | 50 | 62.5 |
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Sida Power 4BMZ overhaul & repair parts
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Sida Power 4BMZ generator set context
The Sida Power 4BMZ is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 56 kVA / 45 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | Sida Power |
| Model | 4BMZ |
| Series | BM46E/BM55E |
| Configuration | L4 turbocharged direct-injection diesel |
| Cylinders | 4 |
| Displacement | 3.8 L |
| Compression Ratio | 17.5:1 |
| Dry Weight | 390 kg |
| Dimensions (L×W×H) | 871 × 632 × 841 mm |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Application-dependent |
| Certifications | IATF16949, GB/T 2820, GB/T 1147.1 |
| Country of Origin | China |
Frequently asked questions
What is the power output of the Sida Power 4BMZ?
The Sida Power 4BMZ is rated at 56 kVA standby / 50 kVA prime at 50 Hz (1,500 rpm); and 63 kVA standby / 56 kVA prime at 60 Hz (1,800 rpm).
Does the 4BMZ run at 50 Hz or 60 Hz?
The Sida Power 4BMZ is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Sida Power 4BMZ use?
The Sida Power 4BMZ is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 4BMZ?
The Sida Power 4BMZ is an inline-4 (4-cylinder) engine with a displacement of 3.8 L.
What emissions information is listed for the 4BMZ?
This record lists Application-dependent for the Sida Power 4BMZ. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Sida Power 4BMZ?
The Sida Power 4BMZ is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the 4BMZ?
This page links reference documents for the Sida Power 4BMZ. Check each document's title, model coverage, revision and rating conditions before using it for selection.