The MAX-AIR rack & pinion pneumatic actuator produces
linear torque output in a compact design utilizing the same
body and end caps for double-acting and spring-return
units.
NAMUR MOUNTING
Namur VDI/VDE 3845 and ISO 5211 dimensions on all
sizes. No special blocks are required to mount solenoid
valves, limit switches or positioners.
DEGREE OF TRAVEL
The standard angle of rotation is 90°. Additional travel
rotations through 180° are available. For sizes from MT08
through MT66, Max-Air actuators feature dual travel stops
that provide ± 10° stroke rotation on both the opening and
closing phases of the actuator stroke. 110° of travel in a
standard 90° actuator!
MULTIPLE OUTPUT SHAFTS
The female pinion drive is standard with a double-square
output drive, and optional with a double-D drive, keyed
drive and designs to meet your specific requirements.
HIGH-CYCLE BEARINGS
Shaft bearings isolate the pinion gear from the housing
and support the shaft for high-cycle applications. Many
competitive manufacturers do not provide this critical
feature.
RUGGED TOOTH DESIGN
The pinion teeth are engaged the full length and stroke of
the piston. The pinion height allows manual override without
needing to remove the indicator.
HIGH VISIBILITY POSITION INDICATION
External open/close indicator as standard, available for all
rotations.
HIGH CYCLE-LIFE WEAR PADS
Pistons incorporate double wear pads (skates) to separate
the rack from the actuator wall and serve as both guide and
wear bearings.
SAFE PRE-LOADED SPRING CARTRIDGES
Epoxy-coated special steel springs are pre-loaded with nonmetallic materials. The stainless steel end-cap fasteners
are extra long to allow for spring relaxation. All parts are
corrosion-resistant.
ALTERNATIVE OPERATING MEDIA
Air pressure operation from 2.8 to 10 Bar (40 to 150 PSI).
Water, nitrogen and compatible hydraulic fluids may also be
used to power the actuator.
STAINLESS STEEL FASTENERS
All external fasteners are corrosion-resistant stainless steel.
HONED BORE FOR HIGH CYCLE-LIFE
Extruded aluminum body is internally machined and honed
to exact specifications. Honing prevents dry spots from
forming within the actuator bore and therefore eliminates
premature seal failure —a critical aspect to long cycle-life.
All internal and external surfaces are hard anodized for
corrosion resistance, with all units permanently lubricated
at the factory.
TRACEABILITY
All units are externally marked with a progressive traceable
serial number.
QUALITY ASSURANCE
100% of all units are factory pressure and leak tested, and
individually boxed for shipment.
BEST WARRANTY IN THE INDUSTRY
Max-Air products are covered by our unlimited cycle-life
warranty. Contact your representative for more details.
ACCESSORIES
Max-Air offers a wide range of adapters for many different
types of valves—including butterfly valves, ball valves and
plug valves—as well as a variety of pneumatic and electric
automation accessories suitable for diverse industrial
environments.
Please call for details.
Introducing Lock Mesh™
Max-Air Technology’s high performance Teon ® infused stainless
steel mesh coating, introduced as our “Lock Mesh™” coating
combines the strength and corrosion resistance of stainless
steel with the technological advancements of infused PTFE.
2
DOUBLE ACTING TORQUES
40 PSIG60 PSIG80 PSIG100 PSIG 120 PSIG
MT04
MT12
MT08
MT16
MT17
MT21
MT26
MT31
MT36
MT41
MT46
MT51
MT56
MT61
MT66
MT71
MT76
*All torques in inch pounds (in-lbs)
406080100120
6294125156187
110147207259295
137206275344412
180270360450540
250375500625750
3755627509371125
500750100012501500
8001200160020002400
10001500200025003000
15622344312539064687
22503375450056256750
30004500600075009000
4550682591001137513650
60009000120001500018000
1175017625235002937535250
1575023625315003937547250
START TO
OPEN
START TO
CLOSE
OPERATION REFERENCE DIAGRAM
SPRING RETURNDOUBLE ACTING
OPENING PHASE
AIR IN #4 = PISTONS OPEN
CLOSING PHASE
OPEN
CLOSEDSTART TO
START TO
OPEN
AIR IN #4 = PISTONS OPEN (SPRINGS COMPRESS)
CLOSE
OPENING PHASE
CLOSING PHASE
OPEN
CLOSED
AIR IN #2 = PISTONS CLOSED
Double Acting Operation is also known as “Air to Open, Air to Close” or “Air to Air”.