J Type Flanges and J Type Couplings J Type Flanges The J Type flanges in sizes 3J and 4J are made from die cast of high strength zinc alloy (tensile strength of 41,000 psi / 2826.8505 bar) and are furnished bored to size. » Size 5J is provided in either zinc alloy or cast iron depending on the bore size » Size 6J is made from cast iron » J flanges are compatible with EPDM or Neoprene sleeves » Each flange has a keyway and two set screws (one set screw over the key and one at 90ｰ to the keyway) J Type Coupling » Complete S-Flex Endurance couplings, with J Type flanges described above, are normally supplied with the one-piece JE sleeve or the one-piece split JES sleeve. An optional JN (Neoprene, one-piece) sleeve or the one-piece split JNS sleeve. » Sizes 5J and 6J couplings are also available with E and N two piece sleeves. Mechanical Power Transmission S-Flex Couplings Dimensional Data 14 www.jbj.co.uk/s-flex-couplings.html J Type Dimensional Data To remove sleeve #DriveLineHarmony Weight Maximum Bore 1 Size with Standard L FL P SL OD T HD OAL G R Flange Coupling Keyway in in in in in in UNC in in in in lbs lbs 3J 0.875 0.81 0.38 0.44 0.25 2.062 ¹⁄ - 20 1.50 2.00 0.44 0.56 0.30 0.68 4J 1.000 0.88 0.44 0.44 0.25 2.460 ¹⁄ - 20 1.63 2.38 0.63 0.75 0.40 0.89 5J 1.125 1.06 0.59 0.47 0.29 3.250 ¹⁄ - 20 1.88 2.88 0.75 0.97 1.10 2.40 6J 1.375 1.31 0.78 0.53 0.29 4.000 ⁵⁄ - 18 2.50 3.50 0.88 1.09 1.90 4.36 Weight Maximum Bore 1 Size with Standard L FL P SL OD T HD OAL G R Flange Coupling Keyway mm mm mm mm mm mm UNC mm mm mm mm kg kg 3J 22.23 20.57 9.65 11.18 6.35 52.37 ¹⁄ - 20 38.10 50.80 11.18 14.22 0.136 0.308 4J 25.40 0.88 22.35 11.18 6.35 62.48 ¹⁄ - 20 41.40 60.45 16.00 19.05 0.181 0.404 5J 28.58 26.92 14.99 11.94 7.37 82.55 ¹⁄ - 20 47.75 73.15 19.05 24.64 0.499 1.089 6J 34.93 33.27 19.81 0.53 13.46 101.60 ⁵⁄ - 18 63.50 88.90 22.35 27.69 0.862 1.978 Note: 1 indicates: Spacing between shafts should be greater than 1/8 inch, 3.175 mm and less than OAL minus the sum of the two bore dimensions.
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