John Deere Speed Gear H75179
Product Overview
John Deere Speed Gear H75179
Premium 2nd–4th Speed Transmission Gear for John Deere Combine Harvesters
The John Deere H75179 Speed Gear is a critical transmission component used in the gearbox system of John Deere combine harvesters. Designed to provide smooth speed changes between transmission ranges, this gear plays an important role in maintaining efficient power transfer and reliable machine operation during harvesting.
At Dawopu, we manufacture high-precision agricultural transmission gears using advanced CNC machining, gear hobbing, carburizing heat treatment, and strict quality control procedures. Our H75179 replacement gear delivers excellent durability, wear resistance, and OEM-compatible performance for demanding agricultural applications.
Product Overview
The H75179 Speed Gear functions as a transmission gear within the combine harvester gearbox assembly.
Its primary functions include:
- Transmitting rotational power between gearbox shafts
- Supporting 2nd and 4th speed gear selection
- Maintaining smooth gear engagement
- Reducing transmission noise and vibration
- Improving drivetrain efficiency
- Extending gearbox service life
Properly manufactured transmission gears are essential for maintaining harvesting productivity and reducing downtime.
Why Choose Dawopu?
Dawopu specializes in manufacturing agricultural machinery gears, gearbox shafts, PTO components, turbine parts, and precision-engineered industrial products.
Our advantages include:
- OEM & ODM manufacturing
- Advanced gear machining capability
- Strict quality management
- Competitive factory pricing
- Fast worldwide delivery
- Professional technical support
- Extensive export experience
Technical Specifications
OEM Part Number
- H75179
Technical Specifications
| Item | Specification |
|---|---|
| OEM Number | H75179 |
| Product Type | 2nd–4th Speed Gear |
| Teeth Configuration | Z=31 / 26 |
| Outside Diameter | 120 mm |
| Height | 34–34.5 mm |
| Bore Diameter | 60 mm |
| Weight | 1.27–1.35 kg |
| Gear Type | Transmission Speed Gear |
Material Specifications
| Component | Material |
| Gear Body | 20CrMnTi Alloy Steel |
| Heat Treatment | Carburized & Hardened |
| Surface Treatment | Shot Peening |
| Hardness | HRC 58–63 |
Mechanical Properties
- Tensile Strength: ≥980 MPa
- Surface Hardness: HRC 58–63
- Excellent fatigue resistance
- High impact strength
- Superior wear resistance
- Stable dimensional accuracy
Suitable Machines
The John Deere H75179 Speed Gear is commonly used in:
John Deere Combine Harvesters
- John Deere 4400
- John Deere 4420
- John Deere 484
- John Deere 7440
- John Deere 7445
John Deere 900 Series Combines
- John Deere 950
- John Deere 955
- John Deere 960
- John Deere 965
- John Deere 965H
- John Deere 968H
- John Deere 970
- John Deere 975
- John Deere 975HY/4
- John Deere 985
- John Deere 985HY/4
John Deere 1000 Series Combines
- John Deere 1055
- John Deere 1065
- John Deere 1068H
- John Deere 1072
- John Deere 1075
- John Deere 1075HY/4
- John Deere 1085
- John Deere 1085HY/4
- John Deere 1165
- John Deere 1175
Compatibility may vary according to production year and gearbox configuration. Always verify OEM number H75179 before ordering.
Why Choose Dawopu Group
OEM Quality
Manufactured to meet OEM specifications
Material Quality
High-grade materials for durability
Fast Delivery
Reliable shipping to global destinations
Certified Quality
ISO 9001:2025
Expert Support
Technical support available
Global Experience
Serving customers worldwide
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