Catalog: Miniature and Instrument Bearing Catalog | |
| miniature and instrument ball bearings products ... | |
| non-standard ultra precision miniature and instrument bearing designs our ... world as the front-runner in high-speed miniature bearing design the precision division ... material as well as the finest quality miniature gyro spin bearings initiatives such as ... | |
| table of contents part numbering system 2 basic technical information 4 products inch series ball bearings radial design radial open unflanged 10 radial open flanged 11 radial shielded unflanged 12 radial shielded flanged 13 full complement radial open unflanged ... | |
| part numbering part numbering system example ssri-418zzeea62ha5cxxp25l 02p rif-1438fa7p13lg49u group 1 material group 2 type group 3 basic size group 4 seals sheilds group 5 modifications group 6 duplex pairs group 7 premium features group 8 cage ss ss=aisi stainless steel 440c no code=chrome alloy steel 52100 ce=chrome alloy steel rings 52100 with ceramic balls sb=440c modified se=aisi stainless steel rings 440c with ceramic balls st=aisi stainless steel rings 440c with tic coated balls xt=chrome alloy steel rings 52100 with tic balls ri rif 418 1438 inch series first one or two digits indicates ... | |
| on all sizes please consult factory a1 miniature and instrument bearings of both the ... | |
| basic technical information ball bearing components this exploded view of a standard ball bearing can help you select the bearing with the appropriate components for your design or application the cross-sectional view illustrates the relative position of these components in the ball bearing assembly basic dimensions the dimensions and reference codes used throughout this catalog are illustrated and defined below these dimensions establish bearing size and other parameters which can help you choose the ball bearing best suited to your application exploded view of ball bearing snap ring shield double ... | |
| basic technical information special assemblies components today s high-technology products demand increasingly critical tolerances nhbb stands ready to support your needs with · next-level bearing assemblies subassemblies · ultra-precision components · leading edge automated production techniques · complete in-house manufacturing · iso 9002 quality system approval · 50 years of experience in precision manufacturing and assembly our experienced staff can help you design quality costeffective subassemblies for your specific applications and manufacture them in small or volume production quantities ... | |
| options in greater detail materials miniature and instrument bearings are normally ... the standard cages for radial or conrad miniature and instrument ball bearings are ... | |
| 38-40 for further information abec 1 miniature and instrument bearings of both the ... | |
| 3 and 3p tolerances 440c 52100 abec 1 miniature and instrument bearings of both the ... | |
| products inch metric and hi-speed specialty bearings inch series radial open unflanged 10 radial open flanged 11 radial shielded unflanged 12 radial shielded flanged 13 full complement radial open unflanged flanged 14 full complement radial shielded unflanged flanged 15 extended inner ring radial open unflanged flanged 16 extended inner ring radial shielded unflanged flanged ... | |
| inch series radial open unflanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear · abec t tolerances apply r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for reference only load ratings are based on abma standard #12 ribbon cage r lo d li d lo r d li d crown cage ... | |
| inch series radial open flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear · abec t tolerances apply r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for reference only load ratings are based on abma standard #12 ribbon cage r df lo d li d df lo r d li d crown cage ... | |
| inch series radial shielded unflanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 add z for single shield zz for two shields as a suffix to basic part number · abec t tolerances apply r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for reference only load ratings ... | |
| inch series radial shielded flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 add z for single shield zz for two shields as a suffix to basic part number · abec t tolerances apply r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for reference only load ratings ... | |
| inch series full complement radial open unflanged flanged r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear for flanged bearings substitute prefix ssrif or ssrf metric dimensions for reference only load ratings are based on abma standard #12 r unflanged r lo d li d flanged r df lo d li d bf b b basic p/n inch bore d mm inch o.d d mm inch width b mm flange ... | |
| inch series full complement radial shielded unflanged flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 add zz for two shields as a suffix to basic part number prior to letter f for flanged bearings substitute prefix ssrif or ssrf metric dimensions for reference only load ratings are based on abma standard #12 r lo d li d unflanged 2 shields ... | |
| inch series extended inner ring radial open unflanged flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 for extended inner ring add ee as a suffix to basic part number for flanged bearings substitute prefix ssrif or ssrf r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions ... | |
| inch series extended inner ring radial shielded unflanged flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 add z for single shield zz for two shields as a suffix to basic part number for extended inner ring add ee for flanged bearings substitute prefix ssrif or ssrf r ribbon or h crown cages are available as indicated please consult with ... | |
| inch series modified dimension radial open unflanged flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability unless already noted metric dimensions for reference only available only as flanged type load ratings are based on abma standard #12 ... | |
| inch series modified dimension radial shielded unflanged flanged r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear r lo d li d unflanged 2 shields ribbon cage r df lo d li d flanged 1 shield crown cage bf b b r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability unless already noted metric dimensions ... | |
| inch series modified dimension radial shielded unflanged flanged continued r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear r lo d li d unflanged 2 shields ribbon cage df lo r d li d flanged 1 shield crown cage bf b b r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for ... | |
| inch series modified dimension radial shielded unflanged flanged continued r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear r lo d li d unflanged 2 shields ribbon cage df lo r d li d flanged 1 shield crown cage bf b b r ribbon or h crown cages are available as indicated please consult with factory for machined cage availability metric dimensions for ... | |
| inch series tapered o.d radial shielded flanged r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear r df lo d li d 2 shields ribbon cage available with r ribbon cage only metric dimensions for reference only bore dimensions 0002 0000 load ratings are based on abma standard #12 bf bo bi basic p/n cage type bore d inch mm inch o.d d mm inner width bi inch mm ... | |
| hi-speed specialty angular contact r r notes 1 inch to metric conversion see page 57 2 see page 7 for abec tolerances 3 r=maximum shaft or housing fillet radius that bearing corners will clear 4 please consult with factory for machined cage options 5 metric/inch conversions given for reference only also available in flange version please consult with factory load ratings are based on abma standard #12 r lo d li d inner ring relieved r li d lo d outer ring relieved b b basic p/n inch bore d mm inch o.d d mm inch width b mm land diameter reference li lo fillet radius r ball complement no z size ... | |
| hi-speed specialty radial r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for machined cage options 6 metric/inch conversions given for reference only also available in flange version please consult with factory load ratings are based on abma standard #12 lo r open machined cage d li d lo r 2 shields machined cage d li d b ... | |
| hi-speed specialty radial continued r r notes 1 inch to metric conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for machined cage options 6 metric/inch conversions given for reference only also available in flange version please consult with factory load ratings are based on abma standard #12 lo r open machined cage d li d lo r 2 shields machined cage d ... | |
| metric l series radial open unflanged flanged r r notes 1 metric to inch conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for cage availability available only as flanged type production standard for flange bearing substitute prefix sslf when applicable metric/inch conversion given for reference only load ratings are based on abma standard #12 unflanged ... | |
| metric l series radial shielded unflanged flanged r r notes 1 metric to inch conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for cage availability 6 add z for single shield zz for two shields as a suffix to basic part number prior to y or w width variations available only as flanged type production standard for flange bearing substitute prefix ... | |
| metric r series radial open unflanged flanged r r notes 1 metric to inch conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for cage availability available only as flanged type production standard for flange bearing substitute prefix ssrf when applicable inch conversion given for reference only load ratings are based on abma standard #12 unflanged r lo d ... | |
| metric r series radial shielded unflanged flanged r r notes 1 metric to inch conversion see page 57 2 basic part numbers shown below include code ss for aisi 440c stainless steel if sae 52100 chrome alloy steel is desired delete ss 3 see page 7 for abec tolerances 4 r=maximum shaft or housing fillet radius that bearing corners will clear 5 please consult with factory for cage availability 6 add z for single shield zz for two shields as a suffix to basic part number prior to y or w width variations available only as flanged type production standard for flange bearing substitute prefix ... | |
| engineering the information contained in this section is provided to assist you in the selection of the proper ball bearing product for your application early involvement of nhbb sales engineering is recommended to assure that the product chosen meets your critical requirements for performance life and cost engineering services materials cages shield seal types radial axial play raceway curvature contact angle ... | |
| engineering engineering services computer design analysis nhbb utilizes computerized design capabilities which allow complex ball bearing applications to be examined and analyzed these capabilities ensure the ultra-precision ball bearing you select will meet your specific requirements for performance life and cost functional tests for ball bearings nhbb has devised a series of rigidly monitored tests which measure starting and running torques as well as vibration or noise levels during testing a ball bearing is normally mounted with a thrust load applied starting torque is a measure of the effort ... | |
| engineering materials the characteristics of alloys and their heat treatment play a major role in the ultimate performance of any ball bearing environmental conditions and performance requirements help determine the appropriate choice of bearing materials the traditional materials used in ball bearings are 440c stainless steel and 52100 chrome steel these materials are heat treated to achieve optimum hardness and dimensional stability and are suitable for most conditions for unique or extreme applications nhbb can offer hybrid ball bearings consisting of steel rings and silicon nitride balls these ... | |
| engineering cages the most common bearing cages are shown below in some cases such as high-load applications a full complement design may be the best choice for operating speed please refer to the nmax/fn values in the product tables and the multiplier table on page 39 nhbb can also supply specially designed cages to meet your specific requirements if any doubt nhbb should be contacted for optimum cage selection basic cage capabilities description ribbon two-piece stamped crimped r design material a.i.s.i 305 steel max speed ref dn 150,000 operating temp max 900°f comments superior starting ... | |
| engineering shield seal types shields and seals are protective closures which retain lubricants and assist in preventing contaminants from reaching internal surfaces in torque-sensitive applications it may be advantageous to use shields rather than seals because there are no contacting surfaces to create drag the following chart illustrates the more common types of shields and seals consideration should be given to the compatibility of cage and shield type designs to allow for appropriate clearance consult with factory for availability shield and seal types description shield removable with snap ... | |
| engineering radial and axial play raceway curvature contact angle when a ball bearing is running under a load force is transmitted from one bearing ring to the other through the balls since the contact area between each ball and the rings is relatively small moderate loads can produce stresses of tens even hundreds of thousands of pounds per square inch these internal stresses have a significant impact on bearing life and performance thus the internal geometry of a bearing its radial play raceway curvature and contact angle must be carefully chosen so loads can be distributed for optimal performance ... | |
| engineering radial and axial play raceway curvature contact angle raceway curvature raceway curvature is the ratio of the raceway radius to ball diameter raceway curvature values typically are either 52 to 54 percent or 57 percent the lower 52 to 54 percent curvature implies close ball-to-raceway conformity and is useful in applications where heavy loads are encountered the higher 57 percent curvature is more suitable for torque sensitive applications formulas for radial play axial play and contact angle radial play pd 2bdb 1 cos 0 pd 2bdb 2bdb² pe² axial play pe 2bdb sin 0 pe 4bdbpd ... | |
| engineering radial and axial play raceway curvature contact angle contact angle contact angle is the angle between a plane perpendicular to the ball bearing axis and a line joining the two points where the ball makes contact with the inner and outer raceways the initial contact angle of the bearing is directly related to radial play the higher the radial play the higher the contact angle the table of contact angles as shown gives nominal values under no load for support of pure radial loads a low contact angle is desirable where thrust loading is predominant a higher contact angle is recommended ... | |
| engineering lubrication lubricant types oil is the basic lubricant for ball bearings nhbb offers both petroleum-based and synthetic oils such as diesters silicone polymers and fluorinated compounds in general diesters have better low temperature properties lower volatility and better temperature/viscosity characteristics than petroleum-based oils silicones and fluorinated compounds possess even lower volatility and wider temperature/viscosity properties grease is an oil to which a thickener has been added to prevent migration from the lubrication site resulting in longer life it is used in situations ... | |
| engineering lubrication lubrication methods centrifuging an oil-lubricated bearing removes excess oil and leaves only a very thin film on all surfaces this method is used on very low torque bearings and can be specified for critical applications vacuum impregnation used with ball bearings containing porous cages forces lubricant into the pores using the cage as an oil reservoir when this method is used with a greased bearing its purpose is to prevent the cage material from leaching oil from the lubricant normally the base oil of the grease is used in the cage to prevent incompatibility grease packing ... | |
| engineering lubrication lubricant specifications we have included a table of commercial and military lubricants and their recommended uses when ball bearings are ordered without a specified lubricant it is the policy of nhbb to lubricate with mil-l-6085 oil company standard lubricants are lo1 winsor lube l-245x oil and lg68 royco 27 grease the standard quantity of oil varies with bearing size but is approximately one drop 36mg per bearing up to r-2 size and two drops 612mg for larger sizes the standard quantity of grease is 30 ± 5 of the bearing s internal free volume lubrication code lo1 brand ... | |
| engineering preload and duplex ball bearings ball bearings are preloaded for a variety of reasons · to eliminate radial and axial looseness · to reduce operating noise · to improve positioning accuracy · to reduce repetitive runout · to reduce the possibility of damage from vibratory loading · to increase life and axial capacity · to increase stiffness there are essentially two ways to preload a ball bearing either by using a spring or through a solid stack of parts spring preloading can consist of a coil spring or a wavy washer which applies a force against the inner or outer ring of the non-interference ... | |
| engineering preload and duplex ball bearings when face-to-face df duplex pairs are mounted the inner rings abut and the outer rings are drawn together providing a higher radial and axial stiffness and accommodation of misalignment with tandem dt pairs both inner and outer rings abut and are capable of sharing a thrust load providing increased thrust capacity nhbb can provide assistance in selecting the appropriate preload specifications for your application 42 | |
| such as the material or the lubricant miniature and instrument ball bearings are ... | |
| engineering load ratings and bearing life elastohydrodynamics ehd effect the presence of a thin film of oil at the mutually contacting ball-to-raceway interface enhances the load capacity of a ball bearing the lubricant life modifier nomograph page 50 includes the effect of the elastohydrodynamic lubricant film and can be used to assist in lubricant selection while it is difficult to provide the exact effect upon life under any of these conditions nhbb can provide bearing life estimates based on semi-empirical data to help you forecast bearing life for your application lubricant life in many instances ... | |
| life calculation of fatigue life while miniature and instrument bearings may fail from ... | |
| engineering t¹ nomograph lbs or kg for ball size less than 1/8 c° static capacity enter 300 200 100 100 t thrust enter t1 read x ° initial contact angle enter y b 50 40 30 20 100 50 40 30 20 10 5° 10° t1 15° 50 40 30 20 10 t1 5 3 2 25° 20° 5 4 3 2 1.0 .5 1.0 y .5 10 a .4 .3 .2 5 4 3 2 .10 .4 .3 .2 .10 .05 .04 .03 .02 .05 .04 .03 .02 .01 1 x example given c 59 lbs ° 5lbs t 9.5° answer t1° 9.5 lbs to find t1 1 strike a line from c 59 thru t 5 to the line x-x pt a ° 2 strike a line from pt a thru the 9.5° to the y-y pt b 3 strike a line from pt b to t 5 ° 4 read t1 9.5 lbs 46 | |
| engineering t¹ nomograph lbs or kg for ball size 1/8 and larger c° static capacity enter 1000 t thrust enter 1000 t1 read 1000 x y 500 500 400 300 200 500 200 100 100 200 50 50 ° initial contact angle enter 5° 10° 15° 20° b t1 20 100 10 20 10 25° 30° a x y 70 example given c 200 lbs ° 25 lbs t 15° 1 answer t° 32 lbs to find t1 1 strike a line from c 200 thru t 25 to the line x-x pt a ° 2 strike a line from pt a thru the 15° to the y-y pt b 3 strike a line from pt b to t 25 ° 4 read t1 32 lbs 47 | |
| engineering r¹ nomograph lbs or kg radial load r enter 200 r1 read 100 50 40 30 20 ° initial contact angle enter 5° 100 50 40 30 20 10 6° 10 7° 5 4 3 8° 9° 1.0 10° .5 .4 .3 12° 15° 0.1 20° 5 4 3 2 2 1.0 .5 .4 .2 0.1 .2 25° example given radial load 2 lbs contact angle 9.5° read r1 .95 lbs to find r1 1 strike a line from r 2 to 9.5° ° 2 read r1 .95 lbs 48 | |
| engineering b1o life nomograph pe r1 t 1 equivalent radial load read lbs 1000 n speed r.p.m enter 500 400 300 200 100 50 40 30 20 10 100 5 4 3 2 1.0 .5 .4 .3 .2 10 lb10 life rev s 10 12 lb10 life hrs read 50,000 500,000 c dynamic capacity enter 1000 100,000 50,000 1011 10,000 1010 10,000 5000 109 5,000 2000 1000 500 108 1000 107 500 1.0 .10 .1 .05 .04 .03 .02 100 50 106 400 300 200 150 .01 10 example given pe =10.45 lbs c 140 lbs read lb10 2.4 x 109 revs given n 15,000 r.p.m read lb10 2700 hrs to find lb10 1 strike a line from pe 10.45 thru c 140 to lb10 life revolutions 2 read lb10 life ... | |
| engineering lubricant effect nomograph to obtain 1 factor for petroleum oils c dynamic capacity enter lbs 1000 good ehd lube film use 1 =3.0 v oil viscosity cs enter 300 200 n speed r.p.m enter z 100,000 50,000 y 500 200 100 50 r+t radial load thrust enter lbs 1 2 10 20 50 100 1 20,000 10,000 5000 3.0 2.0 1.0 40 30 100 50 2000 1000 10 500 20 10 5.0 2.0 1.0 .5 5 200 100 50 boundary lubrication 1 is less than 1 y 4 3 2 20 1 .2 .1 10 z example given c =140 lbs r+t 7 lbs v 15 cs n 15,000 r.p.m read 1 1.5 to find 1 1 add r+t 5+2 7 strike line from r+t 7 to c 140 2 strike line from r.p.m 15,000 ... | |
| are available from nhbb caution 2 when miniature and instrument bearings are ... 4 it is relatively easy to damage a miniature and instrument bearing during assembly ... | |
| engineering torque starting torque and running torque are extremely important in applications such as gyro gimbals low power consumption motors and precision positioning devices in such applications the total system should be evaluated in the design phase for torque input vs torque reflected by the various driven components in many cases bearing design and manufacture can be modified to reduce torque maximum starting torque values for abec 7p bearings nhbb basic size test load thrust grams maximum starting torque milligram millimeters radial play tight fit .0001 .0003 1,800 1,800 1,800 1,800 ... | |
| engineering tolerances table of recommended fits typical applications tape guide roller pulley cam follower outer ring rotation drive motor spring preload precision synchro or servo potentiometer encoder spindle measurement in inches l loose fit t tight fit d bearing bore as listed d bearing od as listed bearings must be purchased with bore and od coding example to use ssr-2 bearing in a potentiometer the shaft diameter should be .1250 .0001 to .1250 .0003 or .1249 to .1247 the housing should be .3750 0002 to .3750 .0000 or .3752 to .3750 shaft fit .0000 .0004l .0001t .0003l .0000 .0002l ... | |
| 800 washington dc 20036 tolerances miniature and instrument ball bearings inner ring ... | |
| engineering dimension control outer ring characteristic mean od tolerance limits configuration all size range 0-18mm 0 7086in all over 18-30mm 7086-1.1181in maximum od tolerance limits open 0-18mm 0 7086in over 18-30mm 7086-1.1811in shielded 0-18mm 0 7086in over 18-30mm 7086-1.1811in od 2 pt out of roundness open open shielded od taper all all shielded radial runout all all width variation od runout with face race runout with face all all plain plain flanged flange width tolerance limits 0-18mm over 18-30mm 0-30mm 0-18mm over 18-30mm 0-30mm 0-18mm over 18-30mm 0-30mm 0-30mm 0-18mm over 18-30mm ... | |
| post service analysis our precision miniature and instrument bearings have proven to ... | |
| engineering metric conversion table fraction 1/64 1/32 inch 0.0156 0.0250 0.0312 0.0394 0.0400 3/64 0.0469 0.0472 0.0550 0.0591 1/16 5/64 0.0625 0.0709 0.0781 0.0787 0.0906 3/32 0.0937 0.0984 0.1000 0.0124 7/64 0.1094 0.1100 0.1102 0.1181 1/8 0.1250 0.1256 0.1378 9/64 5/32 11/64 3/16 0.1406 0.1562 0.1575 0.1719 0.1875 0.1892 0.1969 13/64 7/32 15/64 1/4 17/64 9/32 19/64 0.2031 0.2165 0.2187 0.2344 0.2362 0.2500 0.2656 0.2756 0.2812 0.2883 0.2969 mm 0.3969 0.6350 0.7937 1.0000 1.0160 1.1906 1.2000 1.3970 1.5000 1.5875 1.8000 1.9844 2.0000 2.3012 2.3812 2.5000 2.5400 2.6000 2.7781 2.7940 2.8000 3.0000 ... | |
| engineering interchange chart nhbb ssri-2 ssri-2 1/2 ssri-2 1/2zz ssri-3 ssri-3zz ssri-4 ssri-4zz ssri-3332 ssri-3332zz ssri-5 ssri-5zz ssri-418 ssri-418zz ssri-518 ssri-518zz ssri-618 ssri-618zz ssr-2 ssr-2zz ssr-2a ssr-2zza ssri-5532 ssri-5532zz ssri-5632 ssri-5632zz ssri-6632 ssri-6632zz ssr-3 ssr-3zz ssri-614 ssri-614zz ssri-814 ssri-814zz ssr-4 ssr-4zz ssri-1214 ssri-1214zz ssri-8516 ssri-8516zz ssri-1438 nmb ddri-2 ddri-2 1/2 ddri-2 1/2zz ddri-3 ddri-3zz ddri-4 ddri-4zz ddri-3332 ddri-3332zz ddri-5 ddri-5zz ddri-418 ddri-418zz ddri-518 ddri-518zz ddri-618 ddri-618zz ddr-2 ddr-2zz ddr-2a ddr-2zza ... | |
| engineering nhbb ssri-1438zz ssri-1812 ssri-1812zz ssrif-2 ssrif-2 1/2 ssrif-2 1/2zz ssrif-3 ssrif-3zz ssrif-4 ssrif-4zz ssrif-3332 ssrif-3332zz ssrif-5 ssrif-5zz ssrif-418 ssrif-418zz ssrif-518 ssrif-518zz ssrif-618 ssrif-618zz ssrf-2 ssrf-2zz ssrif-5532 ssrif-5532zz ssrif-5632 ssrif-5632zz ssrif-6632 ssrif-6632zz ssrf-3 ssrf-3zz ssrif-614 ssrif-614zz ssrif-814 ssrif-814zz ssrf-4 ssrf-4zz ssrif-8516 ssrif-8516zz ssrif-1438 ssrif-1438zz nmb ddri-1438zz ddri-1812 ddri-1812zz ddrif-2 ddrif-2 1/2 ddrif-2 1/2zz ddrif-3 ddrif-3zz ddrif-4 ddrif-4zz ddrif-3332 ddrif-3332zz ddrif-5 ddrif-5zz ddrif-418 ... | |
| product quality is our first priority dedic at iontoquality expert engineering s tat e o f t h e artequipment the precision division meets the requirements of iso 9001:2000 and was registered to iso 9002 in 1994 our quality systems meet the requirements of mil-q-9858a and mil-i-45208 our computerized calibration system meets the requirements of ansi/ncsl z 540-1-1994 all bearings are assembled in a class 1000 clean room environment 100 anderonmeter dynamic noise and vibration testing is standard on all of our bearing products 61 | |
| is volume production of ultra precision miniature and instrument bearings additionally we ... -assemblies and cylindrical components miniature instrument bearings precision division ... | |
| capabilities ongoing new product development rod ends sphericals and link assemblies astro division cylindrical roller bearings hitech division the nhbb organization offers our cus tomers complete access to our full range of corporate capabilities including custom bearing design and manufacture just ask your contact at the precision division to help you reach our hitech or astro division engineers as early as possible in the product design phase at precision we are here to help you our valued customer racing series bearings astro division 63 | |
| nhbb precision division corporate headquarters 9700 independence avenue chatsworth california 91311 hitech division 175 jaffrey road peterborough new hampshire 03458 astro division 155 lexington drive laconia new hampshire 03246 tel 603 924-4100 east fax 603 924-9302 east 818 993-4100 west 818 407-5020 west nhbb europe 1 sterling centre eastern road bracknell berkshire rg12 2pw england tel 44 0 1344-308888 fax 44 0 1344-307777 visit us at www.nhbb.com © 2002 nhbb inc. | |
