ZPT Series
Without buffer
Pad dia. (mm)
Vacuum entry port
Pad type
Material
ZPT U N02 A5
U
C
Flat
Flat with ribs
D
Deep
B Bellows
UT Thin flat
CT
Thin flat with ribs
Vacuum entry/Mounting thread diameter
N
S
NBR
Silicone rubber
U Urethane rubber
F FKM
GN Conductive NBR
GS Conductive silicone rubber
Material
Connection
Thread
diameter
M5 x 0.8
M6 x 1
M8 x 1
ø2 to ø8
2 x 4, 3.5 x 7,
4 x 10
ø10 to ø16
(Thin section series)
Symbol
A5
A6
A8
M4 x 0.7B4
M5 x 0.8B5
M6 x 1B6
M8 x 1.25B8
RcB01
ø10 to ø16 ø20 to ø32
ø40, ø50
1
8
NPTN01
1
8
NPTFT01
1
8
Male
thread
Female
thread
02
04
ø2
4010 4 x 10
3507 3.5 x 7
2004 2 x 4
ø4
06 ø6
08 ø8
10 ø10
13 ø13
16 ø16
20 ø20
25 ø25
32 ø32
40 ø40
50 ø50
Pad diameter
Diameter
Type
ø2
Flat with ribs
Flat
Deep
Bellows
4 x 103.5 x 7
2 x 4
ø4 ø6 ø8 ø10 ø13 ø16 ø20 ø25 ø32 ø40 ø50
Thin flat
Thin flat with ribs
Precautions
Caution on Design
Warning
Maintenance
Caution
Selection
Caution
How to Order
Table (1) Pad Diameter/Pad Type
Be sure to read this before handling the products.
Refer to back page 50 for Safety Instructions and pages 49 to 51 for Vacuum Equipment Precautions.
Pad type
(Refer to “Table (1)” for applications.)
1. In cases where workpieces are heavy or dangerous, etc., take
measures to address a possible loss of adsorption force
(installation of drop prevention guides, etc.).
In the case of transportation by vacuum adsor ption using vacuum pads,
a d s o r p t i o n fo r c e i s l o s t w h e n t h e r e i s a d r o p i n vacuu m p r e s s u r e .
Furthermore, since vacuum pressure can also deteriorate due to wear and
cracking of p ads, and vacuum l eakage from pipin g, etc., be c ertain to
perform maintenance on vacuum equipment.
1. Th e pad m ate ria ls di ffe r dep end ing u pon t he op era ti ng
environment.
An appropriate pad material should be selected. Furthermore, since vacuum
pads are manufactured for use with industrial products, they should not have
direct contact with pharmaceuticals or food products, etc.
2. Depending upon the weight and shape of the workpieces, the
diameter, quantity and shape of pads will vary.
Use the pad lifting force table for reference. Also, the pads selected will
differ based upon conditions other than the above, such as the condition of
the workpiece surface (presence or absence of oil or water), the workpiece
material and its gas permeability. Confirmation is necessary by actually
performing vacuum adsorption testing on the subject workpieces.
3. Use a buffer for adsorption on fragile workpieces.
The cushioning by the buffer is necessary when there is variation in the
height of workpieces. When further positioning of pads and workpieces is
desired, a detent buffer can be used.
1. Perform pad maintenance regularly.
Since pads are essentially rubber, deterioration is unavoidable. The rate of
deterioration depends upon factors such as conditions of use, environment
and temperature. Regular maintenance should be performed. If any damage,
splitting, cracking or abrasion has occurred in a pad which appears to be
harmful, replace it immediately. Also, take care not to damage the outside of
the pad.
4.
The life of a buffer will be reduced if the lateral force is applied to the buffer shaft.
Note that sometimes a load is applied to the buffer by a piping tube (pulling
or pressing, etc. in a lateral direction).
5.
Do not apply an impact or large forces to a pad when adsorbing a workpiece.
This will cause deformation, cracking and wear of the pad to be accelerated.
The stiffening ribs, etc. should touch lightly, while staying within the pad
skirt's deformation range. Positioning should be performed accurately.
Especially in the case of small diameter pads.
6.
When transporting in an upward direction, factors such as acceleration, wind
pressure and impact force must be considered in addition to a workpiece
weight.
Use caution particularly when lifting items such as glass plates and circuit
boards, because a large force will be applied by the wind pressure. When a
workpiece which is oriented vertically is transported horizontally, large forces
are applied by acceleration when movement is started and stopped. Further,
in cases where the pad and a workpiece can slip easily, accelerations and
decelerations of horizontal movement should be kept low.
7. When transporting flat workpieces that have large surface
areas using multiple pads, care must be taken when arranging
the pads to balance the workpiece.
ZPT Series
Vacuum Pad/
Vertical Vacuum Entry Without Buffer
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