Datasheet
Ø d
Mandrel
Winding
direction
Sealant tape
Expose approx. 1
thread ridge.
1. Keep the connection part of fi ttings and tubing from
rotating or oscillating movement. Use Rotary
One-touch Fittings (KS or KX series) in these cases.
The fittings may be damaged if they are used in the above
manner.
2. The tubing bending radius in the vicinity of the fi tting
should be at least the minimum bending radius of
the tubing.
If the bending radius is less than the minimum value, fi ttings
may damage, or tubing may crack or be crushed. The
minimum bending radius, with the exception of TS soft nylon
tubing, TU polyurethane tubing, TUH hard polyurethane
tubing, TUS soft polyurethane tubing, TRBU FR double layer
polyurethane tubing, TH FEP tubing, TL PFA tubing, TD
modifi ed PTFE tubing, is measured as following in accordance
with JIS B 8381-1995.
Tubing deformation ratio at the minimum bending radius is
obtained through the following formula, based on tubing
diameter and mandrel diameter by winding the same radius
mandrel tube.
3. Do not use fluids other than listed on the
specifi cations.
Applicable fl uids are air and water. Please consult with SMC if
using other fl uids.
4. When it is used with water, the fi ttings or tubing may
be damaged depending on the surge pressure.
1. Preparation before piping
Before piping is connected, it should be thoroughly blown out
with air (fl ushing) or washed to remove chips, cutting oil and
other debris from inside the pipe.
2. Winding of sealant tape
When screwing together pipes and
fittings, etc., be certain that chips
from the pipe threads and sealant
do not get inside the pipe.
Also, when the sealant tape is
used, leave approx. 1 thread ridge
exposed at the end of the threads.
3. Check the model, type and size before installation.
Also, confi rm that there is no scratches, gouges or
cracks on the product.
4. When connecting the tubing, take pressure or
possible changes to the tubing length into account,
and allow a suffi cient margin.
Failure to do so may result in fi tting breakage or detachment of
the tubing. Refer to the recommended piping conditions.
5. Do not apply unnecessary forces such as twisting,
pulling, moment loads, vibration and impact, etc. on
fi ttings or tubing.
This will cause damage to fittings and will crush, burst or
release tubing.
6.
Tubing, with the exception of coiled tubing, requires
stationary installation. Do not use standard tubing (non-
coiled) in applications where tubing is required to travel
inside the fl exible moving tube. Tubing that travels may
sustain abrasion, extension, or severance due to tensile
force, or may result in removal of tubing from fitting.
Use caution prior to use for proper application.
7. To install the fitting, screw the fitting into the
hexagonal face of the body, and tighten with an
appropriate wrench.
Affix the wrench at the base of the thread. If the size of
hexagonal face and wrench do not match, or tightening takes
place near the tube side, it may cause collapse or deformation
of the hexagonal face, or damage to the equipment. After
installing, confi rm that there is no damage to the fi tting, etc.
Fittings & Tubing
Precautions 1
Be sure to read this before handling products.
Here,
η : Deformation ratio [%]
d : Tubing diameter [mm]
L : Measured length [mm]
D : Mandrel diameter [mm]
(Twice against the minimum
bending radius)
Test temperature: 20 ±5°C
Relative humidity: 65 ±5%
Tube deformation ratio at the
minimum bending radius
Design / Selection Mounting / Piping
Warning Warning
1. Confi rm the specifi cations.
Products represented in this catalogue are designed only for
use in compressed air systems (including vacuum). Do not
operate at pressures, temperatures, etc., beyond the range of
specifications, as this can cause damage or malfunction.
(Refer to the specifi cations.)
Please contact SMC when using a fl uid other than compressed
air (including vacuum).
We do not guarantee against any damage if the product is
used outside of the specifi cation range.
2. Do not disassemble the product or make any
modifi cations, including additional machining.
It may cause human injury and/or an accident.
3. Check if PTFE can be used in application.
PTFE powder (Polytetrafl uoroethylene resin) is included in the
sealant. Confi rm that the use of it will not cause any adverse
affect on the system.
Caution
1. Operation manual
Install the products and operate them only after reading the
operation manual carefully and understanding its contents. Also,
keep the manual where it can be referred to as necessary.
2. Maintenance space
Allow suffi cient space for maintenance and inspection.
3. Adhere to the thread tightening method.
Refer to “Connection Thread Tightening Method” when
mounting the product.
4. There may be cases of the tubing detaching from the
fitting and thrashing around uncontrollably due to
tubing degradation or fi tting breakage.
To prevent the situation from becoming uncontrollable, fi t the
tubing with a protective cover or fi x it in place.
Caution
η =
L − D
2d
1 − x 100
216
Metric Size M, R, RcInch Size UNF, NPTInch Size M, R, Rc
Metric Size GMetric Size R, RcInch Size NPTInch Size RMetric Size UniInch Size Uni
Sealant/Gasket SealFace SealGasket Seal
Round
Type