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SMC JB Series Air Cylinder Floating Joint, Compact

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Product Specifications
Manufacturer Series Number
Item Shape
Bore Diameter
Not Listed  inches
Maximum Working Pressure
145  PSI
Brand Name
SMC Corporation
System of Measurement

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Cushion style Piston stroke length Rod outside diameter maximum string Thread size Thread length string Port size Number of items Part number ASIN

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Currently showing 1-7 of 7
Not Listed Not Listed inches Not Listed inches M10 x 1.5 10 millimeters 0 inches 1 JB63-10-150 B005JGORM2 yes $19.54 Buy Options
Not Listed Not Listed inches Not Listed inches M16 x 2 16 millimeters 0 inches 1 JB80-16-200 B005JGOS12 yes $82.38 Buy Options
Not Listed Not Listed inches Not Listed inches M3 x 0.5 3 millimeters 0 inches 1 JB12-3-050 B005JGOPT2 yes $15.62 Buy Options
Not Listed Not Listed inches Not Listed inches M4 x 0.7 4.5 millimeters 0 inches 1 JB16-4-070 B005JGOQ82 yes $6.46 Buy Options
Not Listed Not Listed inches Not Listed inches M5 x 0.8 5 millimeters 0 inches 1 JB20-5-080 B005JGOQO6 Usually ships in 24 hours $41.57 Buy Options
Not Listed Not Listed inches Not Listed inches M6 x 1 6 millimeters 0 inches 1 JB25-6-100 B005JGOQXC yes $34.99 Buy Options
Not Listed Not Listed inches Not Listed inches M8 x 1.25 8.5 millimeters 0 inches 1 JB40-8-125 B005JGORBI yes $49.09 Buy Options

Key Features

  • Floating joint for connecting to compact air (pneumatic) cylinders to correct a misalignment with attached loads
  • Male-threaded stud and female-threaded port for connecting to cylinder piston rods of either gender
  • Coated steel stud for strength and corrosion resistance
  • Rubber dust cover to keep contaminants out of the joint
  • 145 pounds per square inch (psi) maximum working pressure

Product Description

The SMC JB floating joint has a male-threaded steel stud and a female-threaded port, and it helps correct misalignments between compact air cylinders and attached loads. When the movements of an air (pneumatic) cylinder's piston rod and an attached load are not precisely parallel to each other, the floating joint connects to the piston rod to help correct for the misalignment by +/-5 degrees. The floating joint connects to female-threaded sockets with a stud made of steel for strength and finished with a corrosion-resistant coating. A female-threaded socket on the opposite end of the floating joint connects to male-threaded piston rods, and a rubber dust cover helps keep contaminants out of the floating joint for prolonged operations. The maximum pressure of this floating joint is 145 pounds per square inch (psi) and it comes in several sizes to accommodate different piston rod bore sizes.

Pneumatic actuators fall into two classes: linear and rotary. Linear actuators move objects in straight lines, while rotary actuators turn objects, or rotate them in varying directions. Air cylinders (also called pneumatic cylinders), the most common type of linear actuators, use pressurized air to pull and push piston rods in and out of cylinder barrels. This motion moves mechanisms connected to the rods, or (for detached items) directs or blocks travel using rod-attached plates. Air cylinders execute pushing, pulling, lifting, lowering, pressing, and stopping functions, and they come in several different body types, including round, compact, tie-rod, guided, slide, and clamp. Pneumatic cylinders can be either single acting, with one compressed air port to push the rod in a single direction and uses a spring to return the rod, or double acting, with two compressed air ports on opposite ends of the cylinder to both extend and retract the rod. For quieter piston operation, air cylinders can come with cushioning in one or both ends of their barrels. Several mounting styles are available both for attaching the air cylinder ends to moving components in a pneumatic system and for mounting to rigid surfaces. Air cylinders are used in industrialized automation applications in automotive, food processing, material handling, and robotics industry applications, among others.

SMC Corporation manufactures actuators, valves, airline equipment, connector fittings, electrical products, vacuum products, dryers, temperature control chillers, and accessories. SMC Corporation of America is headquartered in Noblesville, IN, and meets International Organization for Standardization (ISO) 9000:2000 standards.

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