Product Introduction
Two Speed Planetary Gearbox is an industrial planetary reduction transmission unit with two-speed shifting function. It switches between two reduction ratios through planetary gear set to deliver high/low speed and torque output on one machine. This industrial planetary gearbox features compact structure and strong power output, compatible with hydraulic motors and electric motors. Widely used in construction machinery, mobile equipment, winch mechanisms and travel drive units. It meets dual working requirements: low speed high torque for heavy load operation and high speed low torque for idle travel, with stable shifting performance. It is the preferred transmission component for overseas B-end industrial buyers for customized matching and bulk procurement of mobile and heavy-duty equipment projects.
Product Characteristics
Impact-resistant Heavy-duty Design
The Two Speed Planetary Gearbox adopts a multi-planet load-sharing structure. The load is evenly distributed to each set of planetary gears to buffer start-stop shock and sudden peak loads. This industrial planetary gearbox can withstand frequent impact loads during construction machinery operation, reduce risks of gear fracture and pitting, and ensure continuous transmission of mobile equipment under rough and harsh working conditions.
Precise Gear Position Locking Mechanism
Built-in mechanical gear locking assembly reliably locks the transmission gear after high/low speed switching, preventing unexpected gear jumping and disengagement during operation. The two-speed industrial planetary gearbox maintains stable gear position under continuous heavy load, avoiding equipment out-of-control caused by gear jump and improving overall operation safety.
Multi-layer Dust-proof & Leak-proof Sealing
It adopts a combined multi-layer sealing structure with high-pressure resistant oil seals, effectively blocking dust, sediment and muddy water from entering the gearbox while preventing lubricant leakage. The Two Speed Planetary Gearbox is suitable for open-air, mining and construction site harsh environments, reducing gear abrasion from contaminants and lowering oil leakage failure rate.
Product advantages
Reduce Total Machine Procurement Cost
The integrated two-speed shift mechanism is integrally formed without extra external gearbox or clutch assemblies. The two speed industrial planetary gearbox shortens the spare parts purchasing list of main machines, simplifies supply chain management, and directly cuts component purchasing and inventory cost for construction machinery and mobile equipment projects.
Low Downtime Loss for Maintenance
Stable planetary load-sharing structure together with multi-sealing protection delivers mild gear wear and extended lubrication service interval. The Two Speed Planetary Gearbox prolongs maintenance cycles, reduces equipment shutdown and inspection frequency in construction and mining sites, and greatly cuts production losses caused by project halt.
Strong Environmental Adaptability & Wide Versatility
Standard models adapt to outdoor high-low temperature, dusty and humid working conditions and support optional driving sources including electric motors and hydraulic motors. The two speed industrial planetary gearbox is compatible with retrofitting projects for winch and travel drive hosts. Standard housing enables fast replacement of old transmission parts and shortens equipment upgrading cycle.
Product detail photos
Product Description
| two speed planetary gearbox | |
|
Gearbox rated power |
1.5KW - 8000KW |
|
Gear ratio |
3.5 - 4000 |
|
Rated torque |
3 - 900 kN.m |
|
Housing material |
Cast iron |
|
Housing hardness |
HBS190-240 |
|
Gear material |
20CrMnTi alloy steel |
|
Surface hardness of gears |
HRC58°~62 ° |
|
Gear core hardness |
HRC33~40 |
|
Input / Output shaft material |
42CrMo alloy steel |
|
Input / Output shaft hardness |
HRC25~30 |
|
Machining precision of gears |
accurate grinding, 6~5 Grade |
|
Lubricating oil |
GB L-CKC220-460, Shell Omala 220-460 |
|
Heat treatment |
tempering, quenching, etc. |
|
Efficiency |
94%~96% (depends on the transmission stage) |
|
Noise (MAX) |
60~68dB |
|
Temp. rise (MAX) |
40°C |
|
Temp. rise (Oil)(MAX) |
50°C |
|
Vibration |
≤20µm |
|
Backlash |
≤20Arcmin |
|
Brand of bearings |
China's top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands up on requested, SKF, FAG, INA, NSK. |
|
Brand of oil seal |
NAK --- Taiwan or other brands requested |
|
Place of origin |
China |
|
Packing |
wooden box |
|
HS code |
8483402000 |
Typical model
Partial drawing display
Product details display
Our advantages
Eight reasons to choose us
We have our own factory
Multiple certificate certifications
Customizationand selection Steps
Payment and Price Terms
Production and testing
Packaging and transportation
Signing for receipt and after-sales service
FAQ
Q: Can the Two Speed Planetary Gearbox perform repeated high-low speed shifts continuously for a long time?
A: This Two Speed Planetary Gearbox has passed fatigue and impact tests and supports periodic high/low speed shifting for construction machinery intermittent operation. Shifting under no-load or light-load status is recommended to further extend gear service life.
Q: Can the input side of the Two Speed Planetary Gearbox fit both electric motors and hydraulic motors?
A: Yes. We can customize matched input connection structures. The same housing can be adapted for electric motors or hydraulic motors. Customers only need to confirm drive type, input torque and speed parameters in advance.
Q: How much torque fluctuation occurs after gear shifting on two speed planetary gearbox?
A: Benefiting from planetary load-sharing design, output torque remains stable once shifting completes, and torque fluctuation is kept within a reasonable range. The torque ratio depends on reduction ratios of two gears. We can customize torque difference between the two gears according to customer requirements.
Q: Is lubricating oil pre-filled in Two Speed Planetary Gearbox before delivery?
A: Standard units are delivered without pre-filled lubricant, allowing customers to select proper oil for working conditions. We will provide recommended lubricant type and filling volume. Customers can fill oil after on-site installation.
Q: What is the minimum and maximum ambient operating temperature of two speed industrial planetary gearbox?
A: Standard units work within ambient temperature range from -20℃ to +60℃. For extremely cold or high-temperature conditions, special seals and customized lubricating grease can be offered to adapt to harsh field environments.
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