Editorial Technical Reference

Power Unit

This page explains how Power Unit is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The power generation and transmission system that provides mechanical energy to drive the soil compactor's operations.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Power Unit

Definition
In a soil compactor, the power unit is the integrated system responsible for generating and delivering mechanical power to the machine's functional components. It typically consists of an internal combustion engine (diesel or gasoline), transmission system, and associated controls that convert fuel energy into rotational force to drive the compaction drum, propel the machine, and operate auxiliary hydraulic systems. The power unit is a critical component that determines the machine's performance, efficiency, and reliability. It is designed to operate in demanding construction environments, with robust construction using materials such as cast iron, steel alloys, and aluminum alloys. The unit's rated power output typically ranges from 15 to 60 kW at rated speeds of 1800 to 3600 rpm, with engine displacements from 0.5 to 2.5 liters. Fuel consumption at rated power is typically 220 to 280 g/kWh, and noise levels at 1 meter distance are in the range of 90 to 110 dB(A). The operating pressure for hydraulic systems is typically 1.0 to 1.6 MPa, and the unit can operate in ambient temperatures from -20 to 50 °C. Ingress protection is rated IP54 to IP65, and the dry weight (without oil) ranges from 200 to 500 kg, with overall dimensions varying from 800×500×600 mm to 1200×700×900 mm. These parameters are reference ranges and must be confirmed for the specific model and application. The power unit interfaces with the compactor's drum drive, propulsion system, and steering mechanisms, and its selection depends on required compaction force, machine weight, and operating conditions. Regular maintenance includes checking engine oil, filters, and cooling systems. Failure indicators include loss of power, abnormal noise, excessive fuel consumption, or overheating. Verification of compliance with standards such as ISO 3046-1, ISO 6014, ISO 3744, and IEC 60529 should be done with the legal manufacturer or supplier.
Working Principle
The power unit operates by combusting fuel in the engine to create rotational motion through pistons and crankshaft. This rotation is transmitted through a transmission (mechanical, hydrostatic, or torque converter) to adjust speed and torque, then delivered via drive shafts or hydraulic pumps to power the compactor's drum rotation, propulsion system, and steering mechanisms. The engine's power output is controlled by the throttle and governor, and the transmission allows the operator to select appropriate speed and torque for different compaction tasks. Hydraulic systems may be used for auxiliary functions such as vibration or steering, powered by hydraulic pumps driven by the engine. The system is designed to provide reliable power under varying load conditions, with cooling and lubrication systems to maintain optimal operating temperatures.
Common Materials
Cast iron, Steel alloys, Aluminum alloys
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Power15–60 kWPower output at rated speedISO 3046-1
Rated Speed1800–3600 rpmSpeed range for optimal performanceISO 3046-1
Displacement0.5–2.5 LEngine displacementISO 6014
Fuel Consumption220–280 g/kWhAt rated powerISO 3046-1
Noise Level90–110 dB(A)At 1 m distanceISO 3744
Operating Temperature-20–50 °CAmbient temperature range
Ingress ProtectionIP54–IP65Protection against dust and waterIEC 60529
Weight200–500 kgDry weight without oil
Dimensions (L×W×H)800×500×600–1200×700×900 mmOverall dimensions

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Internal Combustion Engine
    Converts chemical energy from fuel into mechanical rotational energy
    Material: Cast iron, steel alloys
  • Transmission System
    Adjusts speed and torque from engine to match operational requirements
    Material: Steel alloys, hardened gears
  • Cooling System
    Maintains optimal operating temperature for engine components
    Material: Aluminum, copper, plastic
  • Fuel System
    Stores and delivers fuel to the engine combustion chambers
    Material: Steel, plastic, rubber
  • Hydraulic Pumps
    Take engine power out to the drum drive, propulsion and steering circuits.
  • Governor
    Holds engine speed under changing compaction load.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Power Unit.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-300 bar
flow rate: 10-200 L/min
temperature: -20°C to 80°C
slurry concentration: 0-40% solids by weight
Media Compatibility
✓ Hydraulic oil ISO VG 46 ✓ Biodegradable hydraulic fluids ✓ Water-glycol hydraulic fluids
Unsuitable: Saltwater or marine environments
Sizing Data Required
  • Required power output (kW)
  • Operating pressure (bar)
  • Flow rate requirements (L/min)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Overheating
Cause: Insufficient cooling due to clogged filters, low coolant levels, or fan failure leading to thermal stress and component degradation.
Bearing Failure
Cause: Contamination from dirt or moisture, improper lubrication, or misalignment causing wear, vibration, and eventual seizure.
Maintenance Indicators
  • Unusual grinding or knocking noises from the unit
  • Visible oil leaks or excessive smoke from the exhaust
Engineering Tips
  • Implement regular oil analysis and filtration to monitor contamination and lubricant condition
  • Ensure proper alignment and balancing during installation to reduce mechanical stress on components

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61010-1:2010 - Safety Requirements for Electrical Equipment UL 508A - Industrial Control Panels

Quoted from the published standard.

Manufacturing Precision
  • Voltage Regulation: +/- 2% of rated output
  • Temperature Rise: Not exceeding 40°C above ambient at full load
Quality Inspection
  • Hi-Pot Test (Dielectric Strength Test)
  • Load Regulation and Efficiency Test

Manufacturers of Power Unit

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CM Energy
Xiamen, Fujian, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Dongying Lake Petroleum Technology CO., Ltd
Shandong, CN
ISO GOST
Listed on the company's own website · profile compiled by CNFX from public sources
Hebei Kingwell Machinery Co., Ltd.
Hebei, CN
API ISO GOST
Listed on the company's own website · profile compiled by CNFX from public sources
Hydraflu Hydraulic Co.
Shanghai, CN
CE
Listed on the company's own website · profile compiled by CNFX from public sources
Jiangsu Guorui Hydraulic Machinery Co., Ltd.
Jiangsu, CN
Founded 1986340 plus staff120,000㎡
Listed on the company's own website · profile compiled by CNFX from public sources
Jinan Huachen Industrial Co., Ltd.
Shandong, CN
Founded 199836,000 m²
ISO9001 CE
Listed on the company's own website · profile compiled by CNFX from public sources
Jining Furuide Machinery Manufacturing Co., Ltd. (FURD)
Jining, Shandong, CN
Founded 199020,000 m²
CE ISO9001 ISO14001
Listed on the company's own website · profile compiled by CNFX from public sources
Flutec Hydraulics
Wuxi, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Guangdong QINX Technology Co., Ltd.
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Hangzhou Chinabase Machinery Co., Ltd.
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Hydrath Power
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
JW HYDRAULIC LIMITED
Shanghai, CN
Also makes: Hydraulic Cylinder
Listed on the company's own website · profile compiled by CNFX from public sources
View All Factories

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the typical power output range for a soil compactor power unit?

The rated power output typically ranges from 15 to 60 kW at rated speed, as per ISO 3046-1. However, the exact value depends on the specific model and application. Always confirm with the manufacturer.

What standards are relevant for verifying the power unit's performance?

Key standards include ISO 3046-1 for power and speed, ISO 6014 for displacement, ISO 3744 for noise, and IEC 60529 for ingress protection. These are reference standards; compliance must be verified with the supplier.

What are common signs of power unit failure?

Common signs include loss of power, abnormal engine noise, excessive fuel consumption, overheating, or hydraulic system malfunctions. Regular maintenance and monitoring can help detect issues early.

How does the power unit interface with the compactor's systems?

The power unit delivers mechanical power via drive shafts or hydraulic pumps to drive the drum rotation, propulsion, and steering. The transmission adjusts speed and torque, and hydraulic systems may power auxiliary functions like vibration.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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