Page 10 of Heim Rod Ends and Sphericals by RBC Bearings

commercial series four piece metal to metal w d h rod ends e o b lubricator optional f a m spherical bearings series hm c dimensions in inches ball width w 005 .005 .312 .375 .437 .500 .562 .625 .750 .875 housing width h 010 .010 .250 .281 .344 .406 .437 .500 .562 .687 head diameter d 031 .031 .625 .750 .875 1.000 1.125 1.312 1.500 1.750 length to center of ball f 031 .031 1.250 1.562 1.875 1.938 2.125 2.438 2.625 2.875 thread length a 062 .062 .750 1.000 1.250 1.250 1.375 1.500 1.625 1.750 thread size m unf -3a .1900 32 .2500 28 .3125 24 .3750 24 .4375 20 .5000 20 .6250 18 .7500 16 ball diameter e ref .437 .515 .625 .718 .812 .937 1.125 1.312 ball flat diameter o ref .306 .353 .447 .516 .586 .698 .839 .978 bore b 0025 .0005 .1900 .2500 .3125 .3750 .4375 .5000 .6250 .7500 maximum static radial load approx weight rod end number hm3c hm4c hm5c hm6c hm7c hm8c hm10c hm12c lbf 900 1,700 2,500 4,000 5,000 7,000 8,050 11,300 lbs .03 .05 .08 .12 .17 .25 .41 .64 sleeve bearings outer member carbon steel with protective coating for corrosion resistance ball 52100 alloy steel heat treated chrome plated inserts brass notes add letter l to prefix to indicate left hand thread example hml4c for design options see page 29 for engineering data see pages 26 thru 28 h tolerance across inserts is 015 ball bearings 8

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