{"id":2036,"date":"2026-07-22T08:00:58","date_gmt":"2026-07-22T08:00:58","guid":{"rendered":"https:\/\/gearrack.top\/?p=2036"},"modified":"2026-07-22T08:00:58","modified_gmt":"2026-07-22T08:00:58","slug":"ring-gears-for-aerospace-and-satellite-systems","status":"publish","type":"post","link":"https:\/\/gearrack.top\/ja\/ring-gears-for-aerospace-and-satellite-systems\/","title":{"rendered":"Ring Gears for Aerospace and Satellite Systems"},"content":{"rendered":"
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<\/div>\n
<\/div>\n
GEAR APPLICATION GUIDE \u00b7 RING GEAR \u00b7 R07<\/span><\/p>\n

Ring Gears for Aerospace and Satellite Systems:
\nActuator Ring Gears, Satellite Antenna Drives and Aerospace Gear Train Applications<\/span><\/h1>\n

Aerospace ring gears operate under a set of constraints that differ categorically from all other industrial ring gear applications \u2014 every gram of mass matters in a flight structure, every micron of dimensional deviation affects the attitude control accuracy of a satellite positioning system, every material choice must comply with a qualification programme that can cost more than the hardware itself, and the gear must function reliably across a lifetime measured in decades without any possibility of maintenance after launch. The aerospace ring gear is simultaneously the most demanding and the most rewarding engineering challenge in the gear industry, requiring the convergence of precision manufacturing, exotic materials, and system-level design thinking that no other sector demands in the same combination.<\/p>\n

Ti-6Al-4V \u00b7 15-5 PH \u00b7 17-4 PH \u00b7 Inconel \u00b7 M1\u2013M6<\/span>
\nDIN 3\u20135 \u00b7 \u221265\u00b0C to +150\u00b0C \u00b7 Vacuum MoS\u2082<\/span>
\nSatellite \u00b7 UAV \u00b7 Helicopter \u00b7 Actuator \u00b7 Antenna<\/span><\/div>\n<\/div>\n<\/div>\n
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MODULE RANGE<\/p>\n

M1 \u2013 M6<\/p>\n

Aerospace ring gear module range. Satellite attitude control reaction wheel drive: M1\u2013M2, DIN 3\u20134. UAV flight control actuator: M2\u2013M3, DIN 4. Helicopter tail rotor pitch actuator: M3\u2013M4, DIN 4\u20135. Satellite antenna pointing drive: M2\u2013M4, DIN 3\u20134. Aircraft landing gear actuator: M4\u2013M6, DIN 4\u20135. Ground-based aerospace test equipment: M4\u2013M6, DIN 5<\/p>\n<\/div>\n

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MATERIAL<\/p>\n

Ti \/ 15-5 PH \/ 17-4 PH<\/p>\n

Aerospace ring gear materials. Ti-6Al-4V: highest specific strength (strength\/density), used where mass is the primary constraint \u2014 satellite ring gears, UAV structural gear elements. 15-5 PH stainless (H900): higher hardness (HRC 38\u201343) than 17-4 PH at the same heat treatment, preferred for high-load aerospace ring gears where corrosion resistance and strength both matter. Inconel 718: extreme temperature (\u2212200\u00b0C to +650\u00b0C), used in turbine actuator ring gears exposed to engine bay temperatures<\/p>\n<\/div>\n

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TEMPERATURE RANGE<\/p>\n

\u221265\u00b0C \/ +150\u00b0C<\/p>\n

Standard aerospace ring gear operating temperature range (MIL-SPEC qualification range). Satellite equipment in LEO: \u221260\u00b0C to +120\u00b0C (eclipse to sunlit cycle). Aircraft flight control: \u221255\u00b0C to +125\u00b0C. Helicopter main rotor actuator: \u221240\u00b0C to +90\u00b0C. Turbine fan actuator: \u221255\u00b0C to +260\u00b0C (near-engine zone). All ring gears must maintain specified backlash and load capacity across the full thermal range<\/p>\n<\/div>\n

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LUBRICATION<\/p>\n

Vacuum MoS\u2082 \/ PFPE<\/p>\n

Aerospace ring gear lubrication systems. Vacuum \/ space: MoS\u2082 ion-beam-deposited coating (1\u20133 \u03bcm dry film, 10\u2078 cycle endurance) or sputtered gold\/silver for ultra-long life. Aircraft (sealed unit): PFPE (Perfluoropolyether) grease \u2014 compatible with \u221265\u00b0C to +200\u00b0C, non-flammable, no vapour pressure issue in high altitude. Aviation mineral gear oil (MIL-PRF-23699): for fully enclosed helicopter and aircraft gearboxes with oil circulation<\/p>\n<\/div>\n<\/div>\n

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Aerospace Ring Gear Engineering \u2014 Mass, Precision, and Life Assurance<\/h2>\n

The fundamental engineering difference between an aerospace ring gear and an industrial ring gear of the same module and tooth count is not primarily a question of dimension or load \u2014 it is a question of design philosophy. Industrial ring gears are designed to a reliability target that accepts a small probability of in-service failure that can be addressed by planned maintenance or unplanned repair. Aerospace ring gears \u2014 particularly those in flight-critical actuators (flight control surface drives, helicopter rotor pitch control) and in space systems (satellite attitude control reaction wheels, satellite antenna pointing drives) \u2014 are designed to a reliability target that accepts no in-service failure, because repair is either impossible (a satellite in geostationary orbit, 36,000 km above the Earth) or involves the loss of a manned aircraft with potentially catastrophic consequences.<\/p>\n

Korea Ever-Power’s ring gears for aerospace and satellite applications<\/a> are manufactured in Ti-6Al-4V (Grade 5 titanium, the standard aerospace structural alloy), 15-5 PH stainless (H900 condition), 17-4 PH stainless (H900 and H1025 conditions), and Inconel 718 for high-temperature actuator applications. The manufacturing quality class is DIN 3\u20135 (compared to DIN 6\u20138 for standard industrial ring gears) \u2014 achieving DIN 3 on an internal ring gear is one of the most challenging precision machining tasks in the gear industry, requiring a fully temperature-controlled grinding room, CBN internal grinding wheels, and a measurement machine with sub-micron resolution to confirm the tooth profile against the DIN 3 tolerance band. For applications requiring complete planetary gearbox assemblies with aerospace-specification ring gears, Korea Ever-Power’s planetary gearbox<\/a> range includes configurations designed for integration into flight-heritage planetary drive mechanisms in UAV and aircraft actuator systems.<\/p>\n

The mass constraint in aerospace ring gear design forces a different approach to material and geometry selection than in industrial design. In a satellite attitude control actuator, the ring gear must provide the load capacity and life for the pointing drive while adding as little mass as possible to the spacecraft \u2014 every kilogram of additional mass translates directly into launch cost (currently USD 2,000\u201310,000 per kilogram to LEO depending on the launch vehicle). The mass optimisation of an aerospace ring gear starts with material selection \u2014 Ti-6Al-4V has a specific strength (ultimate tensile strength \u00f7 density) of approximately 260 kN\u00b7m\/kg, compared to 125 kN\u00b7m\/kg for 20CrMnTi carburized steel. This means a titanium ring gear can carry the same load at approximately half the mass of an equivalent steel gear. However, titanium has a lower surface hardness than carburized steel (HRC 36 for Ti-6Al-4V in the aged condition, vs HRC 60\u201362 for carburized 20CrMnTi), which reduces the tooth contact fatigue resistance and requires the designer to increase the module or tooth face width to compensate \u2014 partially offsetting the mass advantage. The optimum aerospace ring gear material is determined case-by-case from the load, life, mass, and temperature requirements of each specific application.<\/p>\n

\"ring
Korea Ever-Power Ti-6Al-4V aerospace internal ring gear for satellite antenna pointing drive \u2014 M2, 72T internal teeth, ring OD 160 mm, bore 148 mm, wall thickness 6 mm, face width 18 mm, DIN 4 quality (CBN-ground internal profile). Ti-6Al-4V material in the annealed + aged condition: UTS 950 MPa, yield strength 880 MPa, density 4.43 g\/cm\u00b3 (43% lighter than 20CrMnTi steel at equivalent section). Tooth surface treatment: MoS\u2082 ion-beam-deposited dry film, 2 \u03bcm thickness \u2014 the MoS\u2082 coating eliminates the need for liquid lubricant in the satellite\u2019s vacuum environment where conventional grease would outgas volatile components that could contaminate the satellite\u2019s optical or RF sensors. Mass: 82 grams for the complete ring gear \u2014 53% lighter than the equivalent 20CrMnTi steel ring gear at the same module and tooth count. Qualification testing: 10\u2077 tooth contact cycles at rated load in vacuum chamber at \u221260\u00b0C and +120\u00b0C (simulating LEO eclipse and sunlit thermal cycles), confirming tooth profile within the DIN 4 band after thermal-cycle-induced dimensional change.<\/figcaption><\/figure>\n<\/section>\n
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Aerospace Ring Gear Application Specifications<\/h2>\n
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\n
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APPLICATION 01<\/p>\n

SATELLITE ATTITUDE
\nCONTROL DRIVE<\/p>\n<\/div>\n

\n

Ring gear specification:<\/strong> Ti-6Al-4V aged or 15-5 PH H900, M1\u2013M3, DIN 3\u20134, MoS\u2082 ion-beam-deposited coating or sputtered MoS\u2082 for vacuum operation, zero-outgassing requirement per ASTM E595 (TML \u2264 1.0%, CVCM \u2264 0.1%), qualified for 10\u2078 cycles in vacuum (10\u207b\u2076 Pa) at \u221260\u00b0C to +120\u00b0C, 100% dimensional inspection. Satellite attitude control systems use a variety of actuators \u2014 reaction wheels (spinning flywheels whose angular momentum provides attitude stabilisation), control moment gyroscopes (CMGs, which tilt a spinning flywheel to produce a gyroscopic torque), and direct-drive attitude thrusters \u2014 but all eventually require a precision ring gear in the planetary gear train that couples the brushless DC motor to the wheel or gimbal output. The ring gear in a reaction wheel planetary drive is the highest-cycle component in the entire satellite \u2014 at 5,000 RPM motor speed with a 5:1 planetary gear ratio, the ring gear accumulates 2.16 billion tooth contact cycles per year. Over a 15-year satellite design life, the ring gear must sustain 32 billion tooth contact cycles \u2014 beyond the commonly cited ISO 6336 material endurance limit (10\u2079 cycles), requiring special material qualification at the ultra-long-life regime where material properties below the conventional endurance limit are needed.<\/p>\n<\/div>\n<\/div>\n

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APPLICATION 02<\/p>\n

UAV FLIGHT
\nCONTROL ACTUATOR<\/p>\n<\/div>\n

\n

Ring gear specification:<\/strong> 17-4 PH H900 or 15-5 PH H900, M2\u2013M4, DIN 4\u20135, PFPE grease lubrication (\u221255\u00b0C to +125\u00b0C), ratio 20:1\u201380:1 (2-stage planetary), backlash \u2264 2 arc-min at the actuator output, mass-optimised hollow ring (minimum wall thickness for the stress requirement). UAV (Unmanned Aerial Vehicle) flight control actuators \u2014 the electromechanical drives that move the control surfaces (ailerons, elevators, rudder, flaps) and landing gear doors on military and commercial UAVs \u2014 use compact planetary gearboxes with precision ring gears to reduce the high-speed torque of a brushless DC motor to the low-speed, high-torque output needed to move a control surface against aerodynamic load. The ring gear in a UAV actuator must simultaneously meet the precision (backlash \u2264 2 arc-min for control surface position accuracy), temperature (\u221255\u00b0C cold soak before first flight, +125\u00b0C in solar heating on the ground), and mass (every gram must be justified against the UAV payload budget) requirements that define flight-quality hardware. Korea Ever-Power UAV actuator ring gears are 100% individually measured (not sample inspection) for profile form error, total pitch deviation, and radial runout before being accepted for flight use \u2014 any single gear outside the DIN 4 tolerance band at any measurement point is scrapped, not reworked.<\/p>\n<\/div>\n<\/div>\n

\n
\n

APPLICATION 03<\/p>\n

HELICOPTER ROTOR
\nPITCH ACTUATOR<\/p>\n<\/div>\n

\n

Ring gear specification:<\/strong> 15-5 PH H900 or 17-4 PH H900, M3\u2013M5, DIN 4\u20135, aviation mineral oil lubrication (MIL-PRF-23699) in sealed housing, qualification per DO-160 (environmental) and MIL-G-45204 (gear manufacturing), proof load test at 3\u00d7 rated torque before installation, 100% MPI after heat treatment. Helicopter tail rotor pitch actuators and swashplate actuators for main rotor collective pitch control are among the most demanding aerospace actuator applications \u2014 the ring gear must transmit the full rotor pitch control torque (which can be several hundred Newton-metres for a large civil helicopter) while operating in the highly corrosive, vibration-intensive environment of the tail boom or rotor head, where gearbox access for inspection is limited and replacement in the field requires specialised tooling and training. The planetary ring gear in a helicopter pitch actuator is typically a 2-stage design (for the high ratio needed to step down from a 3,000\u20136,000 RPM brushless DC motor to the slow-speed, high-torque actuator output), with the ring gear as the fixed element (non-rotating ring) in the standard planetary arrangement to maintain a compact cylindrical envelope that fits within the constrained space of a helicopter control system mounting bracket.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"precision
Korea Ever-Power precision internal ring gear for aerospace planetary actuator \u2014 17-4 PH H900 stainless, M3, 54T internal, OD 175 mm, bore 162 mm, DIN 4 ground. 17-4 PH in H900 condition: yield strength 1,170 MPa, UTS 1,310 MPa, corrosion resistance (PREN 15.5 \u2014 adequate for mild aircraft atmospheric corrosion but not seawater), non-magnetic. The H900 heat treatment (solution anneal + 480\u00b0C age for 1 hour) provides the maximum strength of the 17-4 PH precipitation hardening sequence, making it the preferred condition for high-load aerospace ring gears where mass minimisation is critical. The MoS\u2082 dry film lubrication on the ring gear internal tooth surface (2 \u03bcm ion-beam-deposited) is applied after all machining and before dimensional inspection \u2014 the dry film must not alter the tooth profile outside the DIN 4 band, which requires the film thickness uniformity to be controlled within \u00b10.3 \u03bcm. Korea Ever-Power applies the MoS\u2082 coating in-house using a Teer Coatings closed-field unbalanced magnetron sputtering (CFUBMS) system, and verifies the coating thickness by profilometer measurement on a companion coupon coated in the same batch as the ring gear.<\/figcaption><\/figure>\n<\/section>\n
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Aerospace Gear Material Comparison and Selection Guide<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
MATERIAL<\/th>\nUTS (MPa)<\/th>\nDensity (g\/cm\u00b3)<\/th>\nMax Temp (\u00b0C)<\/th>\nPrimary Application<\/th>\n<\/tr>\n<\/thead>\n
Ti-6Al-4V (aged)<\/td>\n950<\/td>\n4.43 \u2190 lightest<\/td>\n315<\/td>\nSatellite, low-load UAV<\/td>\n<\/tr>\n
15-5 PH (H900)<\/td>\n1,310 \u2190 strongest<\/td>\n7.78<\/td>\n350<\/td>\nHigh-load actuators, helicopter<\/td>\n<\/tr>\n
17-4 PH (H900)<\/td>\n1,310<\/td>\n7.78<\/td>\n315<\/td>\nUAV actuator, antenna drive<\/td>\n<\/tr>\n
Inconel 718<\/td>\n1,240<\/td>\n8.19<\/td>\n650 \u2190 highest<\/td>\nNear-engine, cryogenic\/hot<\/td>\n<\/tr>\n
20CrMnTi (carburized)<\/td>\n1,100<\/td>\n7.85 \u2014 heaviest<\/td>\n200<\/td>\nIndustrial only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"Korea
Korea Ever-Power DIN 3\u20134 aerospace ring gear precision measurement \u2014 CMM gear measurement with a 1 \u03bcm resolution stylus on a thermally stabilised granite datum, confirming the internal gear tooth profile against the DIN 4 tolerance band for the total profile form error (F\u03b1), slope deviation (fH\u03b1), and crowning at each measured tooth. The DIN 4 tolerance for a M2 internal ring gear tooth is: total profile form error F\u03b1 \u2264 2.4 \u03bcm, total slope deviation fH\u03b1 \u2264 2.0 \u03bcm, total helix slope fH\u03b2 \u2264 3.8 \u03bcm, and single pitch deviation fp \u2264 2.4 \u03bcm. Each of these tolerances is smaller than a typical surface roughness Ra value on a lapped steel surface \u2014 measuring them requires a measurement machine resolution better than 0.1 \u03bcm and a temperature-controlled measurement room to prevent thermal drift during the 45\u201390 minute measurement cycle for a complete aerospace ring gear. Korea Ever-Power’s aerospace-dedicated measurement room is maintained at 20\u00b0C \u00b1 0.2\u00b0C, with the gear blanks equilibrated to room temperature for a minimum of 4 hours before measurement begins.<\/figcaption><\/figure>\n<\/section>\n
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Frequently Asked Questions \u2014 Ring Gears for Aerospace<\/h2>\n
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\n
Q 01<\/span><\/p>\n

We are designing a new satellite antenna pointing mechanism and need a ring gear for a 2-stage planetary drive at M2, 72T. What documentation and testing will Korea Ever-Power provide for a space-qualified component?<\/p>\n<\/div>\n

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Korea Ever-Power’s standard documentation and testing package for satellite planetary ring gears: (1) Material certification (EN 10204 Type 3.2 for space applications):<\/strong> mill certificate for the Ti-6Al-4V or PH stainless billet, confirming alloy composition to AMS 4928 (Ti-6Al-4V) or AMS 5659 (15-5 PH), mechanical properties (UTS, yield, elongation, reduction of area) from a companion test piece cut from the same forging or billet as the gear blank, and heat treatment record. Type 3.2 certification is independently witnessed by a third-party inspection body, which most satellite prime contractors require. (2) 100% individual dimensional inspection report:<\/strong> every aerospace ring gear is measured individually on the CMM \u2014 not by sample inspection. The report covers profile form error at 6 teeth equally spaced around the ring, total pitch deviation, radial runout, bore diameter and roundness, face parallelism, and thread or flange mounting feature dimensions. (3) MoS\u2082 coating process record and coupon test report:<\/strong> for vacuum-service gears, the ion-beam-deposited MoS\u2082 coating thickness (measured on a companion coupon) and adhesion (scratch test per ASTM C1624) are documented for each coating batch. (4) ASTM E595 outgassing test report:<\/strong> for satellite use, confirming TML \u2264 1.0% and CVCM \u2264 0.1% \u2014 all materials (gear alloy, dry film coating, any adhesive or sealant) must individually pass this test. Korea Ever-Power maintains current ASTM E595 test data for all aerospace gear materials and coatings used in standard production. (5) Qualification test protocol (if required by the satellite prime):<\/strong> for new designs, Korea Ever-Power can design and conduct a component-level qualification test programme \u2014 typically 10\u2077 cycles at rated torque in a vacuum chamber at the specified thermal range, with dimensional inspection before and after to confirm the gear remains within specification after the simulated service life. The qualification test is conducted at Korea Ever-Power’s facilities or at a third-party test laboratory as specified by the customer’s quality plan.<\/p>\n<\/div>\n<\/div>\n

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Q 02<\/span><\/p>\n

Why does titanium ring gear tooth contact fatigue life require a different design approach than steel, and what safety factor should we use for a 15-year satellite design life?<\/p>\n<\/div>\n

\n

Titanium alloys present two specific contact fatigue behaviour differences from steel that require modification of the standard ISO 6336 gear design approach: (1) No clearly defined endurance limit:<\/strong> steels (including carburized 20CrMnTi) have a well-defined contact fatigue endurance limit (\u03c3_H,lim) \u2014 the contact stress below which fatigue cracks do not initiate, confirmed by test data plateauing beyond 10\u2077\u201310\u2079 cycles. Titanium alloys (including Ti-6Al-4V) do not have a clear endurance limit \u2014 the S-N curve (stress vs cycles to failure) continues to slope downward well beyond 10\u2078 cycles, meaning the allowable contact stress must continue to be reduced as the design life increases beyond 10\u2078 cycles. For a satellite ring gear accumulating 3 \u00d7 10\u00b9\u2070 contact cycles over 15 years, the allowable contact stress at this cycle count is determined from extrapolated test data (typically at 30\u201350% of the conventional 10\u2077 cycle allowable stress), not from the endurance limit. (2) Fretting susceptibility:<\/strong> titanium gears in contact are prone to fretting at the tooth contact zone under the micro-slip motion that occurs at each mesh cycle \u2014 the fretting produces a local titanium oxide abrasion product (TiO\u2082) that acts as an abrasive at the contact zone, accelerating wear. The MoS\u2082 dry film on the gear tooth surface prevents titanium-to-titanium fretting by interposing the low-shear-strength MoS\u2082 layer between the contact surfaces. Design approach for 15-year satellite life: Korea Ever-Power uses an extended S-N curve for Ti-6Al-4V (derived from available literature data at cycle counts up to 10\u00b9\u2070) combined with a contact fatigue safety factor S_H \u2265 1.8 at the 15-year cycle count \u2014 significantly higher than the S_H \u2265 1.2 used for industrial ring gears at conventional cycle counts. The higher safety factor compensates for the uncertainty in the extrapolated S-N data beyond the test database’s upper cycle limit and for the potential for fretting damage accumulation over the satellite’s lifetime.<\/p>\n<\/div>\n<\/div>\n

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Q 03<\/span><\/p>\n

What is Korea Ever-Power’s minimum order quantity and lead time for aerospace prototype ring gears, and can the same specification be supplied for flight hardware production?<\/p>\n<\/div>\n

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Aerospace prototype and flight production supply parameters: Prototype (engineering model \/ qualification model):<\/strong> minimum 2 pieces (to provide one spare for test); lead time 28\u201345 days from drawing approval, depending on material availability and DIN class. DIN 4 internal Ti-6Al-4V ring gears have a longer lead time than DIN 5 steel due to the CBN internal grinding setup time and the temperature conditioning required for dimensional stability. Flight hardware production (low-rate initial production, LRIP):<\/strong> minimum 5 pieces per order; lead time 35\u201355 days from drawing confirmation. Flight hardware is manufactured under a separate production plan that requires all tooling, fixturing, and process parameters to be locked (no changes without formal deviation or engineering change order) \u2014 this process lock is the key difference between prototype and flight production manufacture. Documentation level:<\/strong> prototype hardware can be supplied with the full dimensional inspection report without the third-party witnessed Type 3.2 material certificate (substituting Type 3.1); flight hardware requires Type 3.2 as standard. Qualification data support:<\/strong> Korea Ever-Power retains manufacturing process records (heat treatment charts, CBN grinding programme parameters, coating batch records, individual measurement data) for 20 years for all flight hardware production \u2014 enabling post-flight anomaly investigation and providing the design heritage data needed for future upgrades or re-orders. Enquiries for aerospace ring gear prototypes should include the drawing (or equivalent dimensional specification), material and heat treatment specification, quality class, MoS\u2082 or other coating requirement, and the acceptance test requirements \u2014 Korea Ever-Power responds with a technical review and quotation within 5 working days.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Explore Korea Ever-Power Gear Categories<\/h2>\n

Seven precision gear product lines for aerospace, satellite, UAV, defence and high-precision industrial applications worldwide.<\/p>\n<\/div>\n

\n
\"aerospace<\/p>\n
\n

Spur Gears<\/a><\/p>\n

Ti \u00b7 PH stainless \u00b7 DIN 3\u20135 \u00b7 space<\/p>\n<\/div>\n<\/div>\n

\"precision<\/p>\n
\n

Helical Gears<\/a><\/p>\n

Aerospace reducer \u00b7 DIN 4 \u00b7 low noise<\/p>\n<\/div>\n<\/div>\n

\"bevel<\/p>\n
\n

\u30d9\u30d9\u30eb\u30ae\u30a2<\/a><\/p>\n

Ti-6Al-4V \u00b7 15-5 PH \u00b7 angle drive<\/p>\n<\/div>\n<\/div>\n

\"worm<\/p>\n
\n

Worm Gears<\/a><\/p>\n

Self-lock actuator \u00b7 antenna Az\/El<\/p>\n<\/div>\n<\/div>\n

\"aerospace<\/p>\n
\n

Ring Gears<\/a><\/p>\n

Aerospace \u00b7 satellite \u00b7 DIN 3\u20135 \u00b7 Ti<\/p>\n<\/div>\n<\/div>\n

\"aerospace<\/p>\n
\n

Planetary Gears<\/a><\/p>\n

Reaction wheel \u00b7 actuator \u00b7 Ti \u00b7 DIN 4<\/p>\n<\/div>\n<\/div>\n

\"plastic<\/p>\n
\n

Plastic Gears<\/a><\/p>\n

PEEK \u00b7 low-outgas \u00b7 sensor gear<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
<\/div>\n

GET A QUOTATION \u00b7 KOREA EVER-POWER<\/p>\n

Need Ring Gears for Aerospace Applications?<\/h2>\n

Korea Ever-Power manufactures aerospace ring gears in Ti-6Al-4V, 15-5 PH, 17-4 PH, and Inconel 718 \u2014 DIN 3\u20135 CBN-ground internal profile, M1\u2013M6, MoS\u2082 ion-beam-deposited dry film for vacuum service, PFPE grease for aviation use. 100% individual CMM inspection, EN 10204 Type 3.2 material certification, ASTM E595 outgassing compliance, qualification test programme support. Minimum 2 pieces prototype. ISO 9001:2015 certified.<\/p>\n

Request a Quotation \u2192<\/a><\/p>\n<\/div>\n

\u7de8\u96c6\u8005: Cxm<\/em><\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

GEAR APPLICATION GUIDE \u00b7 RING GEAR \u00b7 R07 Ring Gears for Aerospace and Satellite Systems: Actuator Ring Gears, Satellite Antenna Drives and Aerospace Gear Train Applications Aerospace ring gears operate under a set of constraints that differ categorically from all other industrial ring gear applications \u2014 every gram of mass matters in a flight structure, every micron of dimensional deviation affects the attitude control accuracy of a satellite positioning system, every material choice must comply with a qualification programme that can cost more than the hardware itself, and the gear must function reliably across a lifetime measured in decades without any possibility of maintenance after launch. The aerospace ring gear […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4566],"tags":[],"class_list":["post-2036","post","type-post","status-publish","format-standard","hentry","category-application-of-gears"],"_links":{"self":[{"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/posts\/2036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/comments?post=2036"}],"version-history":[{"count":1,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/posts\/2036\/revisions"}],"predecessor-version":[{"id":2039,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/posts\/2036\/revisions\/2039"}],"wp:attachment":[{"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/media?parent=2036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/categories?post=2036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gearrack.top\/ja\/wp-json\/wp\/v2\/tags?post=2036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}