Product Details
1)Description of Transmission Gear Shaft
The gear shaft acts as an “interpreter” for converting power and
motion forms. Not only does it transmit rotational movement, but
more significantly, through the design of its own gearing, it
actively alters the output speed, torque, and direction, serving as
a “decision point” within the power transmission pathway.
2)Working Pinciple
Its operating principle is based on the gear ratio formula for
meshing gears (i = n1/n2 = z2/z1). By altering the tooth count
ratio between the driving gear shaft and the driven gear, the
following effects can be achieved:
- Speed reduction and torque increase: When the driving gear shaft
has fewer teeth and the driven gear has more teeth, the output
speed decreases while torque increases.
- Speed increase with torque reduction: Conversely, the output speed
increases while torque decreases.
- Direction change: By meshing with different gear types (such as
bevel gears), the direction of the power transmission axis can be
altered.
3)Feature of Transmission Gear Shaft
- Functional tooth profiles: The tooth profiles (e.g., involute,
cycloidal) and parameters (module, pressure angle, helix angle) of
the gear section are specifically designed to achieve the required
gear ratio and power transmission specifications.
- Diverse configurations: Depending on functional requirements, these
may comprise spur gear shafts, helical gear shafts (for smooth
transmission), bevel gear shafts (for directional change), etc.
- Heat treatment zoning: The gear section typically undergoes surface
hardening treatments such as carburising and quenching for wear
resistance, whilst the journal sections may retain toughness to
withstand impact loads.
4)Advantages of Transmission Gear Shaft
- High transmission efficiency: Mechanical contact transmission
typically achieves efficiencies exceeding 95%.
- Constant transmission ratio: The instantaneous transmission ratio
remains stable, ensuring smooth and precise motion.
- Wide power range: Applicable from minute instruments to colossal
heavy machinery.
- High controllability: Through precise design, output rotational
speed and torque can be accurately regulated.
5)Application
Primarily employed in devices requiring active regulation of speed
and torque:
- Vehicle differentials: Bevel gear shafts transmit power to the left
and right wheels while permitting differential rotational speeds.
- Wind turbine generators: Gear shafts within speed multipliers
convert the low rotational speed of the blades into the high speed
required for the generator.
- Marine propulsion systems: Gear shafts within the drive shaft
system facilitate speed reduction and directional change.
- Robotic joints: Gear shafts within precision reducers enable
accurate torque and position control.
Technical Specifications
| Parameter | Specification |
|---|
| Custom Made | Available |
| Gear Profile Type | Gleason |
| Manufacturing Process | Gear Grinding |
| Teeth Grinding | Included |
| Module (M) | Custom |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | Custom |
| Lead Angle | Custom |
| Accuracy Grade | ISO 6 Grade |
| Heat Treatment | Carburizing |
| Surface Hardness | 58-62HRC |
Steel Code Grades Comparison
| CHINA/GB | ISO | ГΟСТ | ASTM | JIS | DIN |
|---|
| 45 | C45E4 | 45 | 1045 | S45C | CK45 |
| 40Cr | 41Cr4 | 40X | 5140 | SCr440 | 41Cr4 |
| 20CrMo | 18CrMo4 | 20ХМ | 4118 | SCM22 | 25CrMo4 |
| 42CrMo | 42CrMo4 | 38XM | 4140 | SCM440 | 42CrMo4 |
| 20CrMnTi | | 18XГT | | SMK22 | |
| 20Cr2Ni4 | | 20X2H4A | | | |
| 20CrNiMo | 20CrNiMo2 | 20XHM | 8720 | SNCM220 | 21NiCrMo2 |
| 40CrNiMoA | | 40XH2MA/40XHMA | 4340 | SNCM439 | 40NiCrMo6/36NiCrMo4 |
| 20CrNi2Mo | 20NiCrMo7 | 20XH2MA | 4320 | SNCM420 | |
Production Equipment
Manufacturing Process