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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 without Keyway - Metric Bores
S-Flex J Type Flanges w/o Keyway - Imperial

J Type Flanges without Keyway - Metric Bores
Description  N/A 3J-FLNG-9MMH7-NKW N/A 4J-FLNG-12MMH7-NKW
Bore Size N/A 9.00 mm N/A 12.00 mm
Coupling Size N/A 3J N/A 4J
Type N/A Coupling Flange
Material N/A Zinc Die Cast
Thread (Dimension T) N/A 1/4-20
Keyway Size (W x D) N/A No Keyway
Outside Diameter N/A 2.062 in52.37 mm N/A 2.460 in62.48 mm
Color N/A Gray
Nominal Torque (with EPDM Sleeve) N/A 60 in·lb6.78 N·m N/A 120 in·lb13.56 N·m
Bore Type N/A Finished Bore
Max. Bore N/A 0.875 in N/A 1.000 in
Max. Speed N/A 9200.00 rpm N/A 7600.00 rpm
Dimension FL N/A 0.380 in9.65 mm N/A 0.440 in11.18 mm
Dimension HD N/A 1.500 in38.10 mm N/A 1.630 in41.40 mm
Dimension L N/A 0.810 in20.57 mm N/A 0.880 in22.35 mm
Dimension P N/A 0.440 in11.18 mm
Dimension SL N/A 0.250 in6.35 mm
Torsional Stiffness N/A 229.00 in·lb/rad N/A 458.00 in·lb/rad
Rated HP at 100 rpm N/A 0.10 hp N/A 0.20 hp
Rated HP at 1,200 rpm N/A 1.10 hp N/A 2.30 hp
Rated HP at 1,800 rpm N/A 1.70 hp N/A 3.40 hp
Rated HP at 3,600 rpm N/A 3.40 hp N/A 6.90 hp
Coupling Type N/A S-Flex
Weight N/A 0.25 lb N/A 0.47 lb
Cubic inches N/A 3.44399 in³ N/A 5.32541 in³