Rack And Pinion Stainless Steel Single Acting Pneumatic Actuator

Specification & Standard

Features & Benefits

1 – Excellent corrosion resistance.
All main parts of actuator and it’s accessories are made from stainless steel. The body and end-caps is made by investment casting stainless steel. The CF8 (304) and CF8M (316) are available for choice. The pinion and fastening are made by 304 or 316 on requiring.Nearly 20 years experience of application proved that this kind of stainless steel pneumatic is able to offer excellent resistance to most corrosive chemicals (such as acid, alkali) as well as corrosive industry atmospheres, such as offshore, oil and gas platform, pharmaceutical and food industry.

2 – Wide scope of output torque.
Totally, we have 6 different size (specifications) actuators for choice. The output torque range is from 15Nm to 3815Nm at 5 Bar. The stainless steel actuator with 3815Nm is biggest one in the World now.

3 – Smooth and long life operation.
High level manufacturing technology for the rack & pinion in our workshop allows this actuator not only to cycle more than 500,000 times free from failure but also to offer exceptionally smooth actuation due to the low friction generated during rotral operations.

4 – Flexible adjustment in travel ends
The two independent external travel stop bolts allow ±5°adjustment at 0°and 90° of the quarter travel.

We use only high grade quality materials in making our products. We use IC CF8 or CF8M casting material for actuator bodies and caps & racks. For pinions, we use AISI S.S. 304 or S.S. 316 and the seals are available in Buna-N and Viton. We tested each actuator before delivery to ensure the quality of the product.

The ATEX, SIL-3, and CE-certified rotary actuator required dry or lubricated compressed air to operate. It requires 2~8 Bar air supply pressure for double acting and spring return. The standard operating temperature -20°C to 80°C with NBR ‘O’ ring and for high temperature Viton ‘O’ ring, it can sustain -15°C to 150°C temperature. For low temperature -35°C to 80°C is also available with a Silicon ‘O’ ring.

It is recommended that periodic checks be performed to make sure that all fasteners remain tight.
The actuator is supplied ready-lubricated. No further lubrication is required.
On spring return actuators, spring fatigue may set in requiring the replacement of the spring. Spring should always be replaced in full sets.
Under certain working conditions like Heavy Duty, non-compatible operating media, or abnormal operating conditions, internal seals should be checked periodically and replaced when necessary.

Advantages of Stainless Steel Pneumatic Actuator

The most important advantage of stainless steel actuators is that they can be placed in a corrosive atmosphere. It has the highest levels of corrosion protection. In comparison with others, stainless steel pneumatic actuators have a long life cycle. Best suitable for outdoor media and the seashore area. As we have a fully in-house inventory, and we use quality raw materials, hence we are the best pneumatic actuator manufacturer for high performance.

Rack And Pinion Stainless Steel Double Acting Pneumatic Actuator

Specification & Standard

Features & Benefits

1 – Excellent corrosion resistance. All main parts of actuator and it’s accessories are made from stainless steel. The body and end-caps is made by investment casting stainless steel. The CF8 (304) and CF8M (316) are available for choice. The pinion and fastening are made by 304 or 316 on requiring.Nearly 20 years experience of application proved that this kind of stainless steel pneumatic is able to offer excellent resistance to most corrosive chemicals (such as acid, alkali) as well as corrosive industry atmospheres, such as offshore, oil and gas platform, pharmaceutical and food industry.

2 – Wide scope of output torque. Totally, we have 6 different size (specifications) actuators for choice. The output torque range is from 15Nm to 3815Nm at 5 Bar. The stainless steel actuator with 3815Nm is biggest one in the World now.

3 – Smooth and long life operation. High level manufacturing technology for the rack & pinion in our workshop allows this actuator not only to cycle more than 500,000 times free from failure but also to offer exceptionally smooth actuation due to the low friction generated during rotral operations.

4 – Flexible adjustment in travel ends The two independent external travel stop bolts allow ±5°adjustment at 0°and 90° of the quarter travel.

Rack And Pinion Aluminum Single Acting Pneumatic Actuator

Specification & Standard

Features & Benefits

1 – Hard Anodized Barrel/ Body to Protect from Hazardous atmosphere & corrosion, which enhance life of actuator.

2 – Mounting Standard Pinion Top (As Per Namur Standard) The pinion (shaft) top drilled and slotted for easy assembling of switch, positioners and other accessories.

3 – Adjusting Bolt Adjusting Bolts for 0° – 90° ± 5% Over Travel.

4 – ISO – 5211 Standard Mounting for Valve (An International Standard) Double bottom driling for actuator to valve Assembling & centering. Designed for strength and easy mounting or interchangeability.

5 – ISO – 5211 Standard Pinion Bottom (An International Standard) Bottom of the pinion (Shaft) as female key, double square-hole for assembling on valves with square key stem and in line or turned to 45°. Designed for strength and sure-fix with stem.

6 – Sliding Skates The innovation for replaceable sliding skates, between Pistons (Racks) and internal bore surface of the Actuator, just to avoid metal contact, which enhances the Actuator life.

7 – Compact Design “aira” Actuators are designed as compact double acting which offers high torque values. Internal sliding surface, machined and anodized for minimum friction and long life of actuator

This single acting pneumatic rotary actuator has one central skewed shaft (Pinion) and two spring connected pistons with skew ends (Rack). When pressurized air enters in an actuator, the pistons move away from the central shaft, and the shaft gets rotational movement because shaft skews (Pinion) & piston skews (Rack) are connected. When the flow of pressurized air, the springs on the other side of the shaft send back pistons to their original position, and this time also Pinion gets rotational movement because of Racks.

In this one cycle of pistons’ movement, the shaft gets two rotational movements in only a one-time entrance of pneumatic air. So it is called a single-acting pneumatic rotary actuator.

Where to Use a Single Acting Pneumatic Actuator?

This single acting pneumatic actuator provides rotary motion and this product is available for 90° or 180° rotation. So it is useful to operate valves, automatic manufacturing, clamping work, etc. These pneumatic actuators are allowing hands-free operation so there is no requirement for the manual operator and work smoothly even in a hazardous environment. This is also useful for flammable conditions as it provides a spark-free action.

We are SIL 3, ATEX, ERAD, and CE approved Single Acting Pneumatic Rotary Actuator manufacturer and exporter in India. We export our products to 30+ countries around the world including European Countries, African Countries, Gulf Countries, Asian Countries, and many other Indian ocean Countries.

Rack And Pinion Aluminum Double Acting Pneumatic Actuator

Specification & Standard

Features & Benefits

1 – Hard Anodized Barrel / Body to Protect from Hazardous atmosphere & corrosion, which enhance life of actuator.

2 –  Mounting Standard Pinion Top (As Per Namur Standard) The pinion (shaft) top drilled and slotted for easy assembling of switch, positioners and other accessories.

3 – Adjusting Bolt Adjusting Bolts for 0° – 90° ± 5% Over Travel.

4 – ISO – 5211 Standard Mounting for Valve (An International Standard) Double bottom drilling for actuator to valve Assembling & centering. Designed for strength and easy mounting or interchangeability.

5 – ISO – 5211 Standard Pinion Bottom (An International Standard) Bottom of the pinion (Shaft) as female key, double square-hole for assembling on valves with square key stem and in line or turned to 45°. Designed for strength and sure-fix with stem.

6 – Sliding Skates The innovation for replaceable sliding skates, between Pistons (Racks) and internal bore surface of the Actuator, just to avoid metal contact, which enhances the Actuator life.

7 – Compact Design “aira” Actuators are designed as compact double acting which offers high torque values. Internal sliding surface, machined and anodized for minimum friction and long life of actuator.

This pneumatic double-acting actuator requires normal air pressure from 4Kg/cm² (alt+0178 for ²) to a maximum 8Kg/cm² air supply. With this air supply, it can generate up to 13673 NM torque.

Mechanism of Double Acting Pneumatic Actuator

With the help of piston-connected racks, the center rod connected pinion rotates on its axis. When the pressurized air enters the chamber from port – 1, the piston pushes forward and the connected rack rotates the central pinion. To get the earlier position, pneumatic air enters from port -2 and pushes back the piston to its earliest position. Hence the piston-connected rack moves backward and also rotates the pinion. In rack & pinion transmitted double acting pneumatic actuators do not use springs like single-acting pneumatic actuators. The double-acting actuators required air supply twice to complete one cycle. As a result, these actuators provide full control over the connected valve.

Uses of Double Acting Actuator

The Double Acting Pneumatic Actuators provide 90° and 180° Rotation. These actuators are very friendly and widely used to operate quarter-turn valves. Where huge pressure is required to open or close the flow line for a long time, these actuators are ideal for that. To control flammable gas pipelines or refineries remotely, these actuators are the best fit as they provide spark-free transmission.

IBR Approved Pressure Reducing Valve Screwed

Specification & Standard

Features & Benefits

1 – Suitable typically for 3 way vales, requiring ON – OFF operation. It is available in both double acting versions.

2 – The 180° actuator can provide center off for the 3 way ball valve, bottom entry by choosing the option,of 3 position.

3 – The end stop adjustment is provided for opening and closing direction as a standard.

4 – Actuator mounting is as per ISO 5211 & Accessories to Namur Solenoid Valve.

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