SMC Networks MWB-X3075 Series Original Instructions

MWB#-TF2Z418EN
ORIGINAL INSTRUCTIONS
Instruction Manual
MWB-X3075, MWB-X3246 & MWB-UT-X3075
series
Cylinder with Lock/Brake: MWB-X3075/X3246
Lock Brake
Lock/Brake Unit: MWB-UT-X3075
Lock Brake
The intended use of the lock/brake unit is to be used as an individual
product and integrated into an MWB cylinder for intermediate stop,
emergency stop and drop prevention.

1 Safety Instructions

These safety instructions are intended to prevent hazardous situations
and/or equipment damage. These instructions indicate the level of
potential hazard with the labels of "Caution," "Warning" or "Danger."
They are all important notes for safety and must be followed in addition
*1)
to International Standards (ISO/IEC) , and other safety regulations.
*1) ISO 4414: Pneumatic fluid power - General rules relating to systems.
ISO 4413: Hydraulic fluid power - General rules relating to systems.
IEC 60204-1: Safety of machinery - Electrical equipment of machines.
(Part 1: General requirements)
ISO 10218-1: Manipulating industrial robots -Safety. etc.
 Refer to product catalogue, drawings, Operation Manual and Handling
Precautions for SMC Products for additional information.
 Keep this manual in a safe place.
Caution indicates a hazard with a low level of risk which, if
Caution
not avoided, could result in minor or moderate injury.
Warning indicates a hazard with a medium level of risk
Warning
which, if not avoided, could result in death or serious injury.
Danger indicates a hazard with a high level of risk which, if
Danger
not avoided, will result in death or serious injury.
Warning
 Always ensure compliance with relevant safety laws and
standards.
 Only personnel with appropriate training should operate
machinery and equipment.
 The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment
including our products must be performed by an operator who is
appropriately trained and experienced.
 This cylinder with lock or the separate lock unit employs an exhaust
locking system. Sudden braking will occur, if the air supply to the
locking unit is lost or becomes lower than the minimum operating
pressure.

2 Specifications

2.1 Cylinder Specifications

Bore size [mm] 32 40 50 63 80
Action Double acting
1
Fluid Air
Proof pressure 1.5 MPa
Max. operating
1.0 MPa
pressure
Min. operating
0.08 MPa
pressure
Ambient and
Without auto switch: −10°C to 70°C (No freezing)
fluid
With auto switch: −10°C to 60°C
temperatures
Lubricant Not required (Non-lube)
Piston speed 50 to 1000 mm/s
Stroke length
+1.0
~250st: , 251~1,000st:
tolerance 0
Cushion Air cushion
Port size
1/8 1/4
(Rc, NPT, G)
Mounting Basic type
 Select an air filter with a filtration size of 5μm or smaller. For detailed
1
information please refer to the operation manual.

2
Load limits exist depending upon the piston speed when locked,
mounting direction, and operating pressure.

2.2 Lock Unit Specifications

Bore size
32 40 50
[mm]
Locking
Exhaust locking
action
Max.
operating 1.0 MPa
pressure
Min.
operating 0.3 MPa
pressure
Locking
Both directions
direction
Holding force
(Max. static 630 980 1570 2450
1
load)[N]
This locking unit does not have manual lock release.
1
* The holding force (max static load) shows the maximum capability and
does not show the normal holding capacity. Select a cylinder using the
method described in Model Selection in MWB catalogue or operation
manual.

2.3 Stopping Accuracy

Bore size [mm]
32 40 50
Lock type
Exhaust Locking
Stopping
±1.0
accuracy [mm]
Mounting orientation: Horizontal
Supply pressure: 0.5 MPa
Piston speed: 300 mm/s
Conditions
Load condition: Upper limit of allowed value
Solenoid valve for locking is mounted on the unlock port.
Maximum value of stopping position dispersion from 100 measurements
1) 2) 3)

2.4 Overrun distance (All bore sizes)

Overrun distance s [mm] after venting the lock unit to standstill at
vertical mounting position as a function of speed v [mm/s] at 0.6 MPa.
2.4.1 Ø32mm
100
2.4.2 Ø40mm

2
+1.4
0
3/8 1/2
2.4.3 Ø50mm
100
63 80
3920 6080
100
63 80
2.4.4 Ø63mm
2.4.5 Ø80mm
2.4.6 Ø100mm
1) Overrun distance for all bore sizes are validated according to ISO
13849-2. It is allowed to brake at every intermediate position. The
actual overrun distances should be determined in the actual application.
2)
When testing overrun distance in the actual application, perform
safely, observing your national laws.
3)
The brake is specified for operation up to the kinetic energy limit for
the cylinder as shown in the catalogue and indicated in the graph by the
solid line. The brake has the capacity to stop the piston in emergency
situations up to twice the velocity as shown by the dotted line.

3 Installation

Warning
Do not install the product unless the safety instructions in the MWB
operation manual have been read and understood. Refer to the MWB
operation manual for details of the installation method and precautions.

3.1 Environment

Warning
 Do not use in an environment having corrosive gases, chemicals, sea
water, water, water steam, or where there is direct contact with any of
these.
 Do not expose to direct sunlight and block the sunlight.
 Do not use in a location subject to vibration or impact.
 Do not use in a location close to a heat source and exposed to radiant
heat.
 Use a suitable cover on the rod, if used in such locations where dust
is present or water or oil may be splashed.

3.2 Piping

Caution
 Before connecting piping make sure to clean up chips, cutting oil, dust
etc.
 When installing piping or fittings, ensure sealant material does not
enter inside the port. When using seal tape, leave 1 thread exposed
on the end of the pipe/fitting.

3.3 Lubrication

Caution
 SMC products have been lubricated for life at manufacture, and do not
require lubrication in service.
 If a lubricant is used in the system, apply the lubricant following
instructions in the MWB catalogue.

3.4 Mounting

Caution
 Do not apply eccentric load to the piston rod.
Alignment of the centre of gravity of the load and the centre of the
cylinder is necessary. When there is a large amount of misalignment,
eccentric wear or damage of the piston rod can result due to the
moment of inertia caused by the stopping impact when locking.
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