Forged Gear Body: Module Range 1.5-10 mm

Component Specifications

Definition

A forged gear body is a critical power transmission component produced through controlled plastic deformation of metal under compressive forces. This manufacturing process aligns the grain structure of the material to follow the gear's contour, resulting in superior mechanical properties including enhanced fatigue resistance, impact strength, and load-bearing capacity compared to cast or machined alternatives. The component serves as the foundational structure for precision gears used in demanding industrial applications.

Working Principle

The forged gear body operates on the principle of transmitting rotational motion and torque between shafts through precisely engineered teeth that mesh with corresponding gears. The forging process creates a continuous grain flow pattern that follows the gear's geometry, eliminating weak points and porosity while improving material density and structural integrity for reliable power transmission under high stress conditions.

Materials

Common materials include alloy steels (AISI 4140, 4340, 8620), carbon steels (AISI 1045, 1050), and specialized alloys for specific applications. Material selection depends on required hardness, strength, wear resistance, and operating environment. Typical specifications include: Ultimate tensile strength: 850-1200 MPa, Yield strength: 650-1000 MPa, Hardness: 28-35 HRC (heat treated), Grain size: ASTM 5-8.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Module Range	1.5-10 mm
Weight Range	0.5-50 kg
Tooth Profile	Involute (standard), Cycloidal (special)
Pressure Angle	20° (standard), 14.5° or 25° (special)
Surface Finish	Ra 1.6-3.2 μm (as-forged), Ra 0.4-0.8 μm (finished)
Maximum Diameter	50-500 mm
Dimensional Tolerance	IT7-IT9 per ISO 1328

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

Standards

ISO 6336, ISO 1328, DIN 3960, DIN 3990, AGMA 2001

Parent Products

This component is used in the following industrial products

Precision Forged Gear Blank

A near-net-shape forged metal blank designed for subsequent gear machining operations.

View Product Details

Engineering Analysis

Risks & Mitigation

Material defects from improper forging parameters
Dimensional inaccuracies affecting gear meshing
Insufficient hardness leading to premature wear
Stress concentration at tooth roots
Fatigue failure under cyclic loading

FMEA Triads

Trigger: Improper forging temperature control
Failure: Internal cracks or incomplete grain flow
Mitigation: Implement precise temperature monitoring systems and establish strict process controls with regular calibration of heating equipment

Trigger: Inadequate die design or wear
Failure: Dimensional inaccuracies and poor surface finish
Mitigation: Regular die inspection and maintenance, implement predictive maintenance schedules, use high-quality die materials with proper heat treatment

Trigger: Insufficient post-forging heat treatment
Failure: Reduced hardness and premature wear
Mitigation: Establish standardized heat treatment protocols with precise temperature and time controls, implement quality verification through hardness testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Gear tooth profile tolerance: ±0.02 mm, Bore diameter tolerance: H7, Face width tolerance: ±0.1 mm, Runout tolerance: 0.05 mm maximum

Test Method

Dimensional inspection using CMM, Hardness testing (Rockwell C), Ultrasonic testing for internal defects, Magnetic particle inspection for surface cracks, Metallographic analysis for grain structure

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Forged Gear Body

Manufacturer profiles associated with Forged Gear Body.

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Frequently Asked Questions

What are the advantages of forged gear bodies over cast gear bodies?

Forged gear bodies offer superior mechanical properties including higher strength, better fatigue resistance, improved impact toughness, and more reliable performance under heavy loads due to the aligned grain structure and elimination of porosity inherent in the forging process.

What industries commonly use forged gear bodies?

Forged gear bodies are essential in heavy machinery, automotive transmissions, industrial gearboxes, mining equipment, construction machinery, wind turbines, and marine propulsion systems where reliability and durability are critical.

What post-forging treatments are typically applied to forged gear bodies?

Common treatments include normalizing to relieve internal stresses, hardening and tempering for desired hardness, carburizing or induction hardening for surface hardness, shot peening for compressive stress, and precision machining for final dimensional accuracy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Forged Gear Body