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  • 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) and are furnished bore-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° to the keyway).
  • The J Type coupling consists of two flanges and one sleeve.
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Unit of Measure
Items
S-Flex J Type Flanges w/o Keyway - Imperial

J Type Flanges - Rough Stock Bore
S-Flex J Type Flanges w/o Keyway - Imperial

J Type Flanges - Rough Stock Bore
Description  N/A 5J-FLNG-1/2-RSB-NKW-NSS HOLE N/A 6J-FLNG-5/8-RSB-NKW-NSS HOLE
Bore Size  N/A 1/2 in N/A 5/8 in
Coupling Size N/A 5J N/A 6J
Type N/A Coupling Flange
Material N/A Cast Iron
Thread (Dimension T) N/A No Setscrew
Keyway Size (W x D) N/A No Keyway
Outside Diameter N/A 3.250 in82.55 mm N/A 4.000 in101.60 mm
Color N/A Gray
Nominal Torque (with EPDM Sleeve) N/A 240 in·lb N/A 450 in·lb
Bore Type N/A Rough Stock Bore
Max. Bore N/A 1.125 in N/A 1.375 in
Max. Speed N/A 7600.00 rpm N/A 6000 rpm
Dimension FL N/A 0.590 in14.99 mm N/A 0.780 in19.81 mm
Dimension HD N/A 1.880 in47.75 mm N/A 2.500 in63.50 mm
Dimension L N/A 1.060 in26.92 mm N/A 1.310 in33.27 mm
Dimension P N/A 0.470 in11.94 mm N/A 0.530 in13.46 mm
Dimension SL N/A 0.290 in7.37 mm
Torsional Stiffness N/A 916.00 in·lb/rad N/A 1718.00 in·lb/rad
Rated HP at 100 rpm N/A 0.40 hp N/A 0.70 hp
Rated HP at 1,200 rpm N/A 4.60 hp N/A 8.60 hp
Rated HP at 1,800 rpm N/A 6.90 hp N/A 12.90 hp
Rated HP at 3,600 rpm N/A 13.70 hp N/A 25.70 hp
Coupling Type N/A S-Flex
Weight N/A 1.15 lb N/A 2.34 lb