Editorial Technical Reference

Transmission

This page explains how Transmission is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical system that transmits power from the engine to the wheels, controlling speed and torque.

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

Product Specifications

Technical details and manufacturing context for Transmission

Definition
In a rigid dump truck, the transmission is a critical powertrain component that transfers rotational power from the diesel engine to the drive axles. It allows the operator to select different gear ratios to optimize vehicle performance under varying load and terrain conditions, such as hauling heavy payloads on steep mining or construction sites. It manages the trade-off between speed and pulling power (torque). The transmission contains a set of gears within a housing. The operator (or an automated system) selects a gear ratio via a gear lever. This changes how many times the output shaft rotates for each rotation of the input shaft from the engine. Lower gears provide high torque for starting and climbing, while higher gears provide greater speed for efficient travel on level ground. In modern rigid dump trucks, this is often an automatic or powershift transmission for smoother operation under heavy loads. Typical specifications for such transmissions include a torque capacity of 200–600 N·m, a gear ratio range of 3.5–12.0, 6–8 forward gears, a maximum input speed of 6000–8000 rpm, and an efficiency of 92–96%. Operating temperature ranges from -40 to 120 °C, with hydraulic oil pressure of 1.0–2.5 MPa for clutch and gear actuation. Noise level is 70–85 dB(A) measured at 1 m under full load per ISO 362. Dry weight is 80–120 kg, oil capacity is 5–8 L, and input shaft diameter is 25–40 mm. The mounting flange follows SAE J617 patterns SAE 1–SAE 3. Materials commonly used include alloy steel and cast iron. These values are directory reference ranges; verify model-specific data with the manufacturer.
Working Principle
The transmission uses a set of gears inside a housing. The operator or an automated system selects a gear ratio via a gear lever, changing the ratio of input to output shaft speed. Lower gears multiply torque for starting and climbing, while higher gears reduce torque for higher speed on level ground. In rigid dump trucks, automatic or powershift transmissions use hydraulic pressure to engage clutches and shift gears smoothly under heavy loads.
Common Materials
Alloy Steel, Cast Iron
Technical Parameters
ParameterTypical rangeNotes & selection driver
Torque Capacity200–600 N·mMaximum input torque the transmission can handle
Gear Ratio Range3.5–12.0Overall ratio from input to output
Number of Gears6–8Forward gears; more gears improve fuel economy
Max Input Speed6000–8000 rpmEngine speed limit for continuous operation
Efficiency92–96 %Power transfer efficiency at rated load
Operating Temperature-40–120 °CAmbient and oil temperature range
Oil Pressure1.0–2.5 MPaHydraulic control pressure for clutch and gear actuation
Noise Level70–85 dB(A)Measured at 1m distance under full loadISO 362
Weight80–120 kgDry weight without oil
Oil Capacity5–8 LTotal lubricant volume
Input Shaft Diameter25–40 mmSpline diameter for engine coupling
Mounting FlangeSAE 1–SAE 3Standard engine bellhousing patternSAE J617

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
  • Gear Set
    Provides the different gear ratios for speed and torque conversion.
    Material: Alloy Steel
  • Clutch Pack
    Engages and disengages power flow to select gears (in automatic/powershift transmissions).
    Material: Steel, Friction Material
  • Transmission Housing
    Encloses and protects internal components, contains lubricating oil.
    Material: Cast Iron or Aluminum Alloy
  • Input Shaft
    Takes engine torque into the gear train.
  • Output Shaft
    Delivers the selected ratio out to the driveline.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Transmission.

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: Up to 300 bar hydraulic pressure
speed range: 0-6000 RPM
temperature: -40°C to 150°C
torque capacity: 50-5000 Nm
Media Compatibility
✓ Automotive gear oil (75W-90) ✓ Industrial hydraulic fluid (ISO VG 46) ✓ Synthetic transmission fluid (Dexron VI)
Unsuitable: High-abrasion slurry environments with >5% solid concentration
Sizing Data Required
  • Input torque (Nm)
  • Required gear ratio range
  • Maximum operating speed (RPM)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Gear tooth pitting and spalling
Cause: Surface fatigue due to cyclic loading, inadequate lubrication, or material defects leading to subsurface crack propagation and material loss on gear teeth.
Bearing seizure and overheating
Cause: Lubrication failure (contamination, degradation, or insufficient quantity), misalignment, or excessive loading causing metal-to-metal contact, friction, and thermal runaway.
Maintenance Indicators
  • Unusual grinding, whining, or clunking noises during operation indicating gear or bearing damage
  • Visible oil leaks, discolored (burnt) lubricant, or excessive heat radiating from the transmission housing
Engineering Tips
  • Implement a strict lubrication management program using manufacturer-specified oil grades, regular oil analysis, and scheduled changes to prevent contamination and degradation
  • Conduct periodic alignment checks and vibration analysis to detect misalignment, imbalance, or early-stage component wear before catastrophic failure occurs

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
ISO 1328-1:2013 (Cylindrical gears - ISO system of flank tolerance classification) ANSI/AGMA 2000-A88 (Gear Classification and Inspection Handbook) DIN 3961 (Tolerances for cylindrical gear teeth)

Quoted from the published standard.

Manufacturing Precision
  • Gear tooth profile: +/-0.005mm
  • Shaft concentricity: 0.01mm TIR
Quality Inspection
  • Gear tooth contact pattern test
  • Hardness testing (Rockwell C scale)

Manufacturers of Transmission

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.

CHINT Group
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
FILONG (China) Automotive Group Limited
Ningbo, Zhejiang, CN
Founded 1998
Listed on the company's own website · profile compiled by CNFX from public sources
GJF Auto Parts Co., Ltd.
Guangzhou, Guangdong, CN
Founded 1999
Also makes: Drive Shaft, Wheel Hub, Automotive Components and 1 more
Listed on the company's own website · profile compiled by CNFX from public sources
GWEIKE (Jinan G.Weike Science & Technology Co., Ltd.)
Jinan, Shandong, CN
Founded 2004
Listed on the company's own website · profile compiled by CNFX from public sources
Huayi Electric Co., Ltd.
Wenzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Jinan Senfeng Laser Technology Co., Ltd.
Jinan, Shandong, CN
TÜV CE FDA ETL SGS
Listed on the company's own website · profile compiled by CNFX from public sources
Lugao Power Co.,Ltd
Xiangyang, Hubei, CN
Founded 2016nearly 60 employees staff3000 square meter
ISO9001 SGS CCC CE
Listed on the company's own website · profile compiled by CNFX from public sources
Ningbo Saivs Machinery Co., Ltd
Ningbo, Zhejiang, CN
Founded 1989
TS16949
Listed on the company's own website · profile compiled by CNFX from public sources
Tiantie Industrial
Jiangsu, CN
Founded 2003
Listed on the company's own website · profile compiled by CNFX from public sources
VIGOR INNO-TECH Limited
Shaanxi, CN
Founded 2007
Listed on the company's own website · profile compiled by CNFX from public sources
Wenzhou Yili Automobile Technology Co., Ltd.
Wenzhou, Zhejiang, CN
200 staff
Listed on the company's own website · profile compiled by CNFX from public sources
Neway Valve (Suzhou) Co., Ltd.
Suzhou, Jiangsu, CN
Also makes: Power Plant, Transmission Lines, Control Valve and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
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Frequently Asked Questions

What is the typical torque capacity of a rigid dump truck transmission?

The directory lists a torque capacity range of 200–600 N·m. This is a reference range; the exact capacity depends on the specific transmission model and must be confirmed with the manufacturer.

How many forward gears does a typical transmission have?

Typical transmissions have 6 to 8 forward gears. More gears can improve fuel economy by allowing the engine to operate in an optimal speed range.

What standards apply to the mounting flange?

The mounting flange is specified according to SAE J617, with patterns SAE 1 to SAE 3. This standard defines the dimensions and bolt patterns for engine-transmission coupling.

What is the operating temperature range for these transmissions?

The operating temperature range is -40 to 120 °C, covering both ambient and oil temperatures. This range is a reference; verify the limits for your specific application.

Data Basis

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

Preliminary Technical Classification
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