PB Series Vacuum High-Low Temperature Radiation-Resistant Reducer - China Suppliers and Factory for Space Rotary Tables
Options
Ordering Information
PB series: In-line planetary gearbox
PBR series: 90° rectangle planetary gearbox
42 / 60 / 90 / 115 / 142 / 180mm
L1: 1 stage
L2: 2 stages
1 stage: 3, 4, 5, 6, 7, 8, 10
2 stages: 12, 15, 16, 20, 25, 30, 32, 35, 36, 40, 50, 60, 64, 70, 80, 100
⑤ Environmental temperature ratings
| Environmental temperature rating code | Temperature range (℃) | Vacuum class (Pa, optional) | Radiation resistance (Gy, optional) |
|---|---|---|---|
| RHT | -20～+200 | 10-3 | 106 |
| SHT | -20～+200 | 10-3/10-5/10-7 | - |
| HT | -20～+150 | 10-3/10-5/10-7 | - |
| NTL1 | -40～+85 | 10-3/10-5 | - |
| NTL2 | -40～+100 | - | - |
| NTL3 | -65～+125 | 10-3 | - |
| NTL4 | -80～+40 | 10-3 | - |
| NTL5 | -55～+150 | - | - |
Blank: Non-vacuum
V3: Low pressure or vacuum to 10-3Pa
V5: Vacuum to 10-5Pa
V7: Vacuum to 10-7Pa
Blank: No radiation resistance
RH: Radiation resistance (total dose 106Gy)
Description
The space rotary table is a core moving component of aerospace satellites, deep space exploration equipment, and ground space simulation chambers. It operates long-term under extreme composite working conditions including ultra-high vacuum, severe temperature difference, and cosmic ray radiation. Ordinary reducers are prone to lubrication failure, structural jamming, material aging and other faults. In contrast, the vacuum high-low temperature radiation-resistant reducer is customized for extreme aerospace working conditions and serves as the core guarantee for stable and precise transmission of space rotary tables. The vacuum high-low temperature radiation-resistant reducer achieves an ultra-high vacuum resistance of 10⁻⁷ Pa, fully adapts to the space vacuum environment without gas precipitation or cavity pollution, and ensures the internal cleanliness of aerospace equipment. Adopting an ultra-wide temperature adaptation performance, the vacuum high-low temperature radiation-resistant reducer stably withstands drastic temperature fluctuations from -196℃ ultra-low temperature to +200℃ high temperature, perfectly matching the complex space environment of high temperature on the sun-facing side and extreme low temperature on the back-facing side. Meanwhile, the vacuum high-low temperature radiation-resistant reducer resists high-intensity radiation of 1×10⁷ Gy, effectively preventing the aging and failure of transmission components caused by long-term erosion of cosmic high-energy rays.
To adapt to space rotary table equipment of various specifications, the vacuum high-low temperature radiation-resistant reducer is equipped with complete standardized flange sizes, covering 42/60/90/100/115/140/180/200/220/255 mm, fully meeting the installation requirements of small cloud platform rotary tables, medium-load rotary tables and large space simulation rotary tables. The vacuum high-low temperature radiation-resistant reducer features a gear ratio ranging from 3 to 100, satisfying diverse transmission demands including high-precision fine adjustment and high-torque heavy-duty driving; its rated torque ranges from 5 to 1200 Nm, adapting to all types of light and heavy space rotary table equipment. In terms of output structure, the vacuum high-low temperature radiation-resistant reducer supports shaft output and flange plate output to match different transmission connection structures. Motors can be connected in linear or 90° angle types, enabling flexible adaptation to the narrow and compact installation space of aerospace equipment.
Aerospace space rotary tables require long-term maintenance-free continuous operation, imposing extremely high requirements on the stability, durability and environmental adaptability of transmission components. The vacuum high-low temperature radiation-resistant reducer adopts special radiation-resistant alloy materials, wide-temperature resistant sealing structure and non-volatile special lubricating medium, fully adapting to extreme space working conditions in structure and material. Whether for attitude adjustment rotary tables of in-orbit satellites, rotating bases of deep space exploration manipulators, or ground space environment simulation test rotary tables, the vacuum high-low temperature radiation-resistant reducer maintains precise transmission and stable operation without jamming, air leakage or performance attenuation. Compared with ordinary reducers, the vacuum high-low temperature radiation-resistant reducer integrates three core performances of vacuum resistance, high-low temperature resistance and radiation resistance without additional adaptation modification, greatly reducing the R&D and maintenance costs of aerospace equipment, and has become the preferred core accessory in the field of space rotary table transmission.
Frequently Asked Questions (FAQ)
This reducer is specifically engineered for extreme aerospace environments. Unlike standard reducers, it integrates high vacuum resistance (up to 10⁻⁷ Pa), extreme wide-temperature adaptation (-196℃ to +200℃), and high radiation resistance (up to 1×10⁷ Gy) to prevent lubrication failure, jamming, and material aging.
We provide standardized flange sizes ranging from 42mm up to 255mm (including 42/60/90/115/142/180mm). Reduction ratios range from 3 to 100, supporting both 1-stage (L1) and 2-stage (L2) designs to meet diverse torque and precision demands.
Yes. The reducer features vacuum resistance options up to 10⁻⁷ Pa. It utilizes non-volatile special lubricating mediums and specialized sealing structures to prevent gas precipitation and cavity pollution, ensuring absolute cleanliness inside aerospace equipment.
The reducer supports both standard shaft output and flange plate output. For space-constrained installations, it allows motors to be connected inline (linear) or at a 90° angle (using the PBR series).
It can be configured to mount various stepper and servo motors, including KH series stepper motors, KVM series stepper motors, KECM servo motors, and KSSM servo motors, depending on your application requirements.