Precautions

Mounting

Warning

Maintenance

Warning

Specifications

Model

JB12-3-050

JB16-4-070

JB20-5-080

JB25-6-100

JB40-8-125

JB63-10-150

JB80-16-200

JB100-20-250

JB140-22-250

JB160-24-300

12

16

20

25

32, 40

50, 63

80

100

125, 140

160

0.5

0.5

0.5

0.5

0.75

1

1.25

2

2.5

3

Center of sphere

Axial center

Specifications

Operating range

How to Order

J B 40

8-125

12

16

20

25

40

63

80

100

140

160

12

16

20

25

32, 40

50, 63

80

100

125, 140

160

X11

Nil

Operating

pressure

Air pressure compact cylinder

1 MPa or less

Applicable

bore size

(mm)

Applicable

cylinder

nominal thread

size

Maximum operating tension

and compression force (N)

Compression side Tension side

Rotating

angle

Ambient

temperature

Allowable

eccentricity

U (mm)

M3 x 0.5

M4 x 0.7

M5 x 0.8

M6 x 1

M8 x 1.25

M10 x 1.5

M16 x 2

M20 x 2.5

M22 x 2.5

M24 x 3

112

200

1100

2500

6000

11000

18000

28000

54000

71000

112

200

300

500

1300

3100

5000

7900

15300

20000

±5°

For compact cylinders/

Female thread

Applicable bore size (mm)

Symbol Applicable bore size

(mm)

High temperature

specifications

–5 to 100

°C

None

Thread nominal size

Option

Nominal

thread size

Applicable cylinder

nominal thread size

M3 x 0.5

M4 x 0.7

M5 x 0.8

M6 x 1

M8 x 1.25

M10 x 1.5

M16 x 2

M20 x 2.5

M22 x 2.5

M24 x 3

3-050

4-070

5-080

6-100

8-125

10-150

16-200

20-250

22-250

24-300

Be sure to read this before handling

the products. Refer to back page 50

for Safety Instructions.

1. To screw the male threads of the rod into the female

threads of the socket or the case, make sure that it

does not bottom out. If the floating joint is used with its

rod bottomed out, the stud will not be able to float,

causing damage. For the screw-in depth of the female

threads, refer to the dimensions (page 1155). As a

rule, after the rod bottoms out, back off 1 to 2 turns.

2. The dust cover may adhere to the stud. In this

case, move the dust cover at the neck of the stud

by the finger or twist the stud slightly left or right to

break in the dust cover before use.

Additionally, when screwing the stud and socket or the case

into a driven body, screw in such parts with the dust cover

removed. When screwing in such parts without removing

the dust cover, this may cause damage to the dust cover.

3. To use a floating joint to connect the cylinder rod

to a driven body, secure it in place by applying a

torque that is appropriate for the thread size.

Also, if there is a risk of loosening during opera-

tion, take measures to prevent loosening, such

as using a locking pin or thread adhesive.

In the event that the connected portion becomes

loose, the driven body might lose control or fall off,

leading to equipment damage or injury to personnel.

4. This product is not a rotary joint. So, the product cannot

be used for rotational or rotation acting applications.

5. Be sure to use the cushion mechanism of the

cylinder or the buffer mechanism, such as the

shock absorber so that any impact force is not

applied to the floating joint when stopping a

driven body. If there is no buffer mechanism, an

excessive impact force is generated. As a result,

the tensile compression force of the floating joint

may exceed its maximum level.

1. Do not reuse if disassembled.

High strength adhesive is applied to the portion of

the connection that is threaded to prevent it from

loosening, and it must not be disassembled. If it

is forcefully disassembled, it could lead to

damage.

Floating Joint: For Compact Cylinders

JB Series

RoHS

-5 to 60

°C

1. The black zinc chromate treatment is applied to

the material surfaces of the case, flange and foot.

However, the white deposit may rarely occur on

the surface. This white deposit does not affect the

product functions. However, if the white deposit

becomes a problem from a viewpoint of appear-

ance, special products with the surface treatment

changed to the electroless nickel plating are also

available. For details, please contact SMC.

Caution

1154