D 500241X 012
POSI-SEAL R Type 1035 Rack-and-Pinion
研究生英语Rotary Actuator
Type 1035 double-acting and spring-return rotary
valve actuators are compact, simply-designed control devices quality-engineered to provide high torque outputs to 5700 N S m (50,000 lbf S in) and a high cycle life.
A compact, dual-oppod rack and pinion design and guide band suspension system combine to produ
ce a symmetrically balanced, center-mount actuator with a short powerful stroke and rapid
respon. A fully concentric operating load capability provides optimum performance (e figure 1).
Features
D Three Point Suspension System—Threevictory是什么意思
carbon-filled PTFE guide bands provide a low friction bearing surface for piston alignment and rack support. Elimination of metal-to-metal contact
between pistons and cylinder wall reduces friction for outstanding cycle life, smooth piston travel, and maximum power.
D Balanced Piston Design—As part of the design, three equally spaced bearing surfaces are cast into each piston. The rack and pinion
construction results in even distribution of bearing loads, optimum gear engagement, and reduced pi
ston tilt. Equal spring force applied to each piston enhances actuator life.
D Multiple Constructions—Conversion from double acting to spring return, or vice versa, is simple and safe, thus reducing spare part
requirements. Valve/actuator action is also field reversible.
W6957 / IL
andy the world
Figure 1. Type 1035 Actuator with Type A41 Valve
D Dual Stop Adjustment— This adjustment is standard on all
E Series actuators. The P Series actuators are supplied with a limit plate adjustment feature.
assignedtoD Dual Piston Design—Air pressure applies a balanced force across the common pinion gear (e figure 2). Symmetrically balanced center mount construction eliminates undue stress on the valve stem, bearings, and disc.
1. The pressure/temperature limits in this bulletin and any applicable standard or code limitation for the actuator should not be exceeded. 2
installs3
NAMUR ACCESSORY MOUNTING
STANDARD VALVE MOUNTING FLANGES CONFORMING TO VDI/VDE 3845 (AN INTERNATIONAL STANDARD)
MULTIPLE SPRING SYSTEM
OFF-THE-SHELF AVAILABILITY OF A MULTIPLE SPRING DESIGN MEANS ACTUATORS ARE
AVAILABLE FOR 3, 4, 5.5, OR 7 BAR (40, 60, 80,OR 100 PSI) SUPPLY AIR REQUIREMENTS.CONVERSION FROM DOUBLE ACTING TO
SPRING RETURN IS A SIMPLE AND SAFE TASK.
ISO 5211 ACTUATOR MOUNTING THE STANDARD ACTUATOR MOUNTING PATTERN (AND
SQUARE DRIVE) CONFORM TO ISO 5211
RECESSED OUTPUT DRIVESHAFT
ALL E SERIES UNITS FEATURE RECESSED DOUBLE D OR OPTIONAL SQUARE SHAFT ENDS THAT ARE PRECISION
MACHINED FOR ACCURATE POSITIONING.THE RECESSED SHAFT END ALLOWS FOR “DIRECT COUPLING” OF THE
pVALVE STEM FOR MOST APPLICATIONS.
DOUBLE D SQUARE DESIGN
W6856 / IL
Figure 2. Actuator Construction
4
AIR AT `A' ROTATES SHAFT COUNTERCLOCKWISE
AIR AT `B' ROTATES SHAFT CLOCKWISE
平安夜英语>留学条件
A
A
B
B
A6953 / IL
Figure 3. Double-Acting Actuator (Standard Construction)
Installation
Output Shaft—E Series actuators feature a double D or square recesd actuator inrt in the end of the output shaft (e figure 2). The double D connection allows direct coupling to Type A41 valve drive shafts, or it allows u of a coupling between the valve and actuator. The P Series actuators have a recesd square connection machined into the end of the output shaft. The recesd square
connection meets ISO 5211 standards. It allows the u of a coupler between the actuator (square) and valve (double D) connection. Refer to figures 5, 6 and 7 and tables 4 and 5 for actuator dimensions. Operation
Type 1035 rack-and-pinion actuators are manufactured with an integral air manifold and with internal porting. The air manifold is designed to NAMUR standards for direct mounting of a device. This eliminates the need for external tubing and simplifies installation. For applications not requiring an air manifold, the inlet ports are marked A and B.
AIR AT `A' ROTATES SHAFT COUNTERCLOCKWISE
EXHAUST AT `A' ROTATES SHAFT CLOCKWISE
A
A
B
B
A6954 / IL
Figure 4. E Series Spring Return Actuator (Standard Const.) Air-to-Air (Double Acting)
Air to Port A
advantagesPressure is applied to the central chamber driving the dual pistons outward. Linear piston force is transferred via gear racks producing counterclockwi rotation of the gear (e figure 3). Air to Port B
Pressure is applied to the outside chambers through the internal port driving the pistons inward to produce rotary (clockwi) motion.
Spring Return (Single Acting)
Air to Port A
Pressure is applied to the center chamber driving the pistons outward. This compress the springs in the outside chambers and produces rotary (counterclockwi) motion (e figure 4).
Loss of Pressure
Upon loss of pressure the stored energy from the compresd springs drives the pistons inward producing rotary motion depending on the actuator t-up. This fail safe position is held by spring compression until air pressure is re-applied to port A.
5
Table 2. Approximate Weights
ACTUATOR
kg
lbs
SIZE EDA ESA EDA ESA E25 1.3 1.7 2.7 3.7E40 1.8 2.4 4.0 5.3E65 2.4 3.6 5.37.9E100 3.1 4.6 6.110.1E200 5.89.112.820.1E35010.416.922.937.3E60019.427.642.860.8E95026.438.658.285.0E160042.765.894.1145P2500/P250556.888.2125194P4000/P4005
86.6
131.8ui设计师培训
190
291
Dual Stop Adjustment (E Series only)
The Inner Travel Stop (stop 1 in figure 6) acts against the stroke adjustment cam and limits the motion of the pistons as they move towards the
center of the actuator. The Outer Travel Stop (stop 2in figure 6) acts against the pistons and stops their motion as they move out towards the end caps. The
Inner Travel Stop is not available when the outward motion of the pistons caus the cam to rotate clockwi.
Limit Stop Plate (P Series only)
The Limit Stop Plate (LSP) allows the customer to limit the actuator motion regardless of the rotation direction of the actuator cam. One stop will limit the open position, and the other will limit the clod position. The particular stop (right or left), which
limits a specific travel direction, depends on the cam rotation direction and whether the device is
clockwi-to-clo or counter-clockwi-to-clo.The bolts attaching the LSP to the actuator must be properly torqued. See the instruction manual.
Note
Fisher does not assume responsibility for the lection, u, or maintenance of any product. Responsibility for proper lection, u, and
maintenance of any Fisher product remains solely with the purchar and end-ur.
