for new technology network r aerospace bearings corporation
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warranty ntn warrants to the original purchaser only that the delivered product which is the subject of this sale a will conform to drawings and specifications mutually established in writing as applicable to the contract and b be free from defects in material or fabrication the duration of this warranty is one year from date of delivery if the buyer discovers within this period a failure of the product to conform to drawings or specifications or a defect in material or fabrication it must promptly notify ntn in writing in no event shall such notification be received by ntn later than 13 months from the date of delivery within a reasonable time after such notification ntn will at its option a correct any failure of the product to conform to drawings specifications or any defect in material or workmanship with either replacement or repair of the product or b refund in part or in whole the purchase price such replacement and repair excluding charges for labor is at ntn s expense all warr
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major characteristics of ntn aerospace bearings high reliability use of high quality materials manufacture at the only specialized factory of aerospace bearings in japan thorough quality control including follow-up records wide variety of types and designs ball bearings cylindrical roller bearings tapered roller bearings needle roller bearings self-aligning roller bearings miniature ball bearings spherical plain bearings bearee plain bearings wide variety of sizes available from 1.5mm bore instrument bearings to 1500mm outside diameter rocket bearings in order to increase the reliability ntn implements the following ¡magnetic particle test of races steel balls and rollers ¡eddy current test of races steel balls and rollers ¡acid etch test of races steel balls and rollers ¡fluorescent penetrant test of machined cages ¡silver plate and dynamic balance adjustment of machined cages ¡dynamic balance test of rollers ¡fiber flow formation of races index jet engine bearings helicopter bearings
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ntn aerospace bearings engine bearings are divided broadly into two categories of use for main shafts and for reduction gears auxiliary drive system high technology is required to design and manufacture main shaft bearings which are used in high speed and high temperature conditions 2
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ntn aerospace bearings jet engine bearings major jet engines in which ntn bearings are employed japanese manufacture engines j3 t-1b p-2j jr100 trial manufacture fjr710/10 the first trial manufacture of stol fjr710/20 the second trial manufacture of stol fjr710/600 asuka f3 t-4 licensed engines to manufacture j79-17 f-4ej j805 t-1a t53-13b uh-ih t53-703 ah-is t55 ch-47 t56 p-3c t58 kv-107 hss-2 t63 oh-6j t64 us-1 jt8d-9 c-1 tf40 f-1 t-2 f100 f-15j t700sh/uh-60j main shaft bearing reduction gear bearing overseas manufacture engines main shaft cf6-80c2 cf6-80e1 cfe738 ct7 cf34-3 overseas manufacture engines gear box cf6-80c2 cf6-80e1 ge90 ct7 cf34-8c cf34-10 main shaft bearing reduction gear bearing engines developed by international joint cooperation rj500 joint development of japan and england v2500 joint development of japan usa england germany and italy main shaft bearing reduction gear bearing 3
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ntn aerospace bearings functioning with many rotary parts helicopters require various specially designed bearings 4
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ntn aerospace bearings helicopter bearings ntn bearings are used for various applications input gearbox tail rotor retention main gearbox main rotor shafts intermediate gearbox main rotor blade retention tail gearbox swash plates tail drive shaft rotor control linkages for use in these applications ntn supplies following bearings self-aligning seat ring type thrust bearings axially loaded duplex ball bearings duplex split inner ring ball bearings thin section ball bearings for swash plate double-row cylindrical roller bearings for planetary gears self-aligning roller bearings for planetary gears single-row self-aligning roller bearings tapered roller bearings with brass cage special needle roller bearings spherical plain bearings rotor blade retention bearing major helicopters in which ntn bearings are employed s-61 sikorsky licence hss-2 2b sikorsky licence kv-107 vertol licence bk117 joint development of japan and germany uh-1h bell licence oh-6j hughes licence ah-1s bell licence oh-
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ntn aerospace bearings 6
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ntn aerospace bearings auxiliary bearings propeller shank bearings auxiliary bearings ntn manufactures and supplies a great variety of bearings for use in generators motors starters fuel pumps oil pumps cabin super chargers air cycle machines auxiliary power devices and other components for these applications the following bearings are used sealed or shielded ball bearing with quiet running characteristics heat resistant ball bearings and roller bearings high precision ball bearings of abec 9 or a higher grade of the abma standard high precision roller bearings of grade 4 or a higher grade of the jis standard auxiliary bearings propeller shank bearings specially designed thrust roller bearings are used on blade shanks of variable-pitch propellers ntn is one of the few manufacturers capable of producing these thrust roller bearings major propellers in which ntn bearings are employed 63e60 hamilton standard licence 54h60 hamilton standard licence propeller shank bearings 7
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ntn aerospace bearings © jaxa satellites and space rockets require various bearings created under special specifications of structure design material and manufacturing process and ntn is one of the top manufacturers in this field 8
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ntn aerospace bearings bearings for space development liquid hydrogen turbo pump bearings satellite bearings ¡the 1st and the 2nd stage liquid fuel rocket engines for le-5b le-7a use ¡rocket engine jimbal for h-iia use ¡rocket auxiliary turbine ¡rocket fuel main valve for h-iia use ¡various instruments used in space development earth sensors paddle drive mechanism and others for satellites le-7a engine h@a rocket first stage © jaxa h a rocket standard model © jaxa 9
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