JCB
JCB 448 SV-129
448 Dieselmax
JCB 448 Dieselmax 4.8L 4-cylinder diesel engine for generator sets. 117 kW prime / 129 kW standby at 60Hz. Euro Stage V. Turbocharged, Intercooled, Common Rail.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-06-28
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 124 kVA
- Electrical Output
- 99 kWe
- Cylinders
- L4
- Displacement
- 4.8 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 100 | 90 | 112.5 |
| Standby Power | 110 | 99 | 123.8 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 117 | 105.3 | 131.6 |
| Standby Power | 129 | 116.1 | 145.1 |
Note: The manufacturer does not publish a separate kWe rating for this engine. kWe values shown are estimated from the rated mechanical output (kWm) using a conservative 90% alternator efficiency factor.
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JCB 448 SV-129 generator set context
The JCB 448 SV-129 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 124 kVA / 99 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 | JCB |
| Model | 448 SV-129 |
| Series | 448 Dieselmax |
| Configuration | L4 |
| Cylinders | 4 |
| Displacement | 4.8 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Euro Stage V |
| Country of Origin | United Kingdom |
Frequently asked questions
What is the power output of the JCB 448 SV-129?
The JCB 448 SV-129 is rated at 124 kVA standby / 113 kVA prime at 50 Hz (1,500 rpm); and 145 kVA standby / 132 kVA prime at 60 Hz (1,800 rpm).
Does the 448 SV-129 run at 50 Hz or 60 Hz?
The JCB 448 SV-129 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the JCB 448 SV-129 use?
The JCB 448 SV-129 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 448 SV-129?
The JCB 448 SV-129 is an inline-4 (4-cylinder) engine with a displacement of 4.8 L.
What emissions information is listed for the 448 SV-129?
This record lists Euro Stage V for the JCB 448 SV-129. 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 JCB 448 SV-129?
The JCB 448 SV-129 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 448 SV-129?
This page links reference documents for the JCB 448 SV-129. Check each document's title, model coverage, revision and rating conditions before using it for selection.