This is a high-precision planet carrier designed for planetary gear reducers with module of M1.25. Forged from 42CrMo alloy steel and strengthened through QT + induction hardening, the planet carrier achieves an optimal balance between core toughness and surface wear resistance. The optimized manufacturing processes, makes the gear carrier maintains excellent concentricity and positional accuracy while transmitting torque, effectively minimizing operating noise and vibration. The compact design and reliable performance makes it ideal for applications demanding high transmission precision and reliability, such as industrial automation, robotic joints, and precision machine tools etc.
Planet Carrier For Planetary Gearboxes
Specification
Module
1.25
Application
Planetary gearboxes
Material
42CrMo
Heat Treatment
QT plus Inductive hardening
Accuracy
NA
Critical Role of Planet Carrier in the Planetary Gear Set
In an automatic transmission, the planet carrier is a core component of the planetary gear set. The function is just like a rotating “cage” that houses many small planet gears mounted on support shafts. These planet gears revolve around a central sun gear, that’s the origin of its name.
The planet gear carrier plays several critical roles within the transmission:
- Support and mesh maintenance: It provides precise rotational support for the planet gears, ensuring they remain perfectly meshed with both the sun gear and the ring gear. This eliminates the gear-grinding often associated with shifting in traditional manual transmissions and serves as the foundation for smooth gear changes.
- Bridge for power transmission: In an automatic transmission, the carrier can act as either a power input or a power output element, transferring torque to the driveshaft. It can also be held stationary by a brake to alter the power transmission path, enabling reverse gear or different gear ratios.
- Determining shift logic: The transmission control unit manages clutches and brakes to determine whether the carrier is driving, held stationary, or being driven. For instance, holding the carrier stationary enables reverse gear; using it as the output allows for gear reduction (increasing torque); and using it as the input enables overdrive.
The planet gear carrier is not only a physical mount for the planet gears; it is a pivotal component that enables the automatic transmission to achieve various gear ratios and switch power transmission modes.
Production process
6-Step Production Process
Forging
Turning
Gear Cutting
Heat Treatment
ID & OD & Surface Grinding
Tooth Grinding
Forging
When gears need high performance that needs to withstand high loads, high stress, impact loads or fatigue loads, forgings are suggested to use. Forging allows metal fibers to be continuously distributed along the gear profile, significantly improving root strength and fatigue life.
Turning
This is the process of cutting and shaping solid materials into precise parts. It uses tools like lathes, mills, and drills to remove excess material. Machining transforms a simple block of metal into a finished, functional component.
Gear Cutting
Gear Cutting includes all processes to create gear teeth after rough or fine machining. It shapes teeth to ensure smooth and efficient power transfer for performance, strength and cost efficiency.
Heat Treatment
Gears need to be running with two gears or above two gears, that makes them easy to be worn-out. That’s why most types of gears need to be harden through heat treatment.
ID & OD & Surface Grinding
ID grinding, OD grinding, Surface grinding are all belonging to CNC grinding which are the foundational precision abrasive machining processes used to achieve exceptional dimensional accuracy and surface finishes, especially on hardened materials.
Tooth Grinding
Tooth Grinding are the final processes are applied after heat treatment to correct distortion, improve geometry, and achieve the final surface finish necessary for quiet, efficient power transmission.
Inspection
Strict Quality Inspection
Dimension Inspection
Material Inspection
Heat Treatment Testing
UT & MT Testing
Meshing Testing
Accuracy Testing
Dimension Inspection
Material Inspection
Heat Treatment Testing
UT & MT Testing
Meshing Testing
Accuracy Testing
Packages
Professional Packaging Safe Arrival
Customized cost-effective packages for products protection. We select multi-model solutions, combining air, sea, or land freight for the optimal balance of cost, speed, and reliability.
Inner Package
Out Package
Carton
Wooden Package
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Your Precision
Transmission Partner
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