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TBNS Series Stainless Steel Pneumatic Actuator - High Torque, ATEX Certified - China Suppliers & Factory
Features of the TBNS Series stainless steel pneumatic actuator
- ASTM316L, 316, 304 stainless steel pneumatic actuator with electro-polish finish offer excellent resistance to most corrosive chemicals as well as industrial atmospheres.
- Dual piston rack and pinion design for compact construction, symmetric mounting position, high-cycle life and fast operation, reverse rotation can be accomplished in the field by simply inverting the pistons. Multiple bearings and guides on racks and pistons, low friction, high cycle life and prevent shaft blowout.
- Modular preloaded spring cartridge design, with coated spring for simple versatile range, greater safely and corrosion resistance, longer cycle life.
- Fully machined teeth on piston and pinion for accurate low backlash rack and pinion engagement, maximum efficiency. The two independent external travel stop adjustment bolts can adjust ±5° at both open and close directions easily and precisely. Stainless steel fasteners for long term corrosion resistance.
- Full conformance to the latest specifications: ISO5211, DIN3337 and Namur or product interchangeability and easy mounting of solenoids, limit switches and other accessories.
Parts and Materials
| NO | Description | Qty | Standards Material |
|---|---|---|---|
| 1 | Indicator Screw | 1 | Plastic |
| 2 | Indicator | 1 | Plastic |
| 3 | Snap Ring | 1 | Stainless steel |
| 4 | Washer | 1 | Stainless steel |
| 5 | Outside Washer | 1 | Engineering Plastics |
| 6 | Body | 1 | Stainless steel |
| 7 | Piston | 2 | Stainless steel |
| 8 | Piston O-ring | 2 | Viton/NBR |
| 9 | Piston Bearing | 2 | Engineering Plastics |
| 10 | Spring Spring Retainer(L,R) Retainer Connector | 0-12 | Spring Steel 66 Nylon 66 Brass |
| 11 | End-Cap O-ring | 2 | Viton/NBR |
| 12 | End-Cap | 2 | Stainless steel |
| 13 | Stop screw | 2 | Stainless steel |
| 14 | End-Cap Stop Screw | 8 | Stainless steel |
| 15 | Guide Piston | 2 | Nylon 66 |
| 16 | O-ring(Adjust screw) | 2 | NBR |
| 17 | Nut(Adjust screw) | 2 | Stainless steel |
| 18 | Adjust screw | 2 | Stainless steel |
| 19 | Plug | 2 | NBR |
| 20 | Inside Washer | 1 | Engineering Plastics |
| 21 | Cam | 1 | Stainless steel |
| 22 | Bearing Top | 1 | Engineering Plastics |
| 23 | O-ring(Top) | 1 | Viton/NBR |
| 24 | Pinion | 1 | Stainless steel |
| 25 | Bearing Bottom | 1 | Engineering Plastics |
| 26 | O-ring Bottom | 1 | Viton/NBR |
Operating Principle and Out Torque
Double Action
CCW
CW
CCW: Air to Port A forces the pistons outwards, causing the pinion to turn counter clock wise while the air is being exhausted from Port B.
CW: Air to Port B forces the pistons inwards, causing the pinion to turn clock wise while the air is being exhausted from Port A.
CW: Air to Port B forces the pistons inwards, causing the pinion to turn clock wise while the air is being exhausted from Port A.
Single Action
CCW
CW
CCW: Air to Port A forces the pistons outwards, causing the springs to compress. The pinion turns counter-clockwise while air is being exhausted from Port B.
CW: Loss of air pressure, the stored energy in the springs forces the pistons inwards, the pinion turns clock wise while air is being exhausted from Port A.
CW: Loss of air pressure, the stored energy in the springs forces the pistons inwards, the pinion turns clock wise while air is being exhausted from Port A.
Output Torque With Double Acting
Output Torque Table of SK Series Pneumatic Actuators with Double Acting
| Model | Air Pressure (bar) | |||||
|---|---|---|---|---|---|---|
| 3bar | 4bar | 5bar | 6 bar | 7bar | 8bar | |
| TBNS-052DA | 11.6 | 15.4 | 19.2 | 23 | 26.8 | 30.6 |
| TBNS-063DA | 20.9 | 28.1 | 35.3 | 42.4 | 49.6 | 56.8 |
| TBNS-075DA | 28.8 | 38.8 | 49 | 58.8 | 68.6 | 78.4 |
| TBNS-083DA | 44 | 58.7 | 73.5 | 88.2 | 102.9 | 117.6 |
| TBNS-092DA | 66.2 | 88.3 | 110.3 | 132.5 | 154.5 | 176.6 |
| TBNS-105DA | 95.6 | 127.2 | 158.8 | 190.4 | 222 | 253.6 |
| TBNS-125DA | 145.3 | 193.9 | 242.5 | 291.1 | 339.6 | 388.2 |
| TBNS-140DA | 250 | 337 | 425 | 511 | 596 | 681 |
| TBNS-160DA | 381 | 514 | 649 | 779 | 908 | 1038 |
| TBNS-190DA | 615 | 828 | 1046 | 1255 | 1464 | 1673 |
| TBNS-210DA | 782 | 1043 | 1303 | 1564 | 1825 | 2085 |
| TBNS-240DA | 1131 | 1508 | 1885 | 2262 | 2639 | 3016 |
| TBNS-270DA | 1720 | 2293 | 2866 | 3440 | 4013 | 4586 |
| TBNS-300DA | 2291.4 | 3055.2 | 3819.0 | 4582.8 | 5346.6 | 6110.4 |
| TBNS-350DA | 3426.0 | 4568.0 | 5710.0 | 6852.0 | 7994.0 | 9136.0 |
| TBNS-400DA | 4872.0 | 6496.0 | 8120.0 | 9744.0 | 11368.0 | 12992.0 |
Sizing: Double Acting Actuators
The suggested safety factor for double acting actuators under normal working conditions is 20%-30%.
Example:
The torque needed by valve = 100N.m
The torque considered safety factor (1+30%) = 130N.m
Air Supply = 5Bar
According to the above table, we can choose the minimum model is TBNS-105DA.
The torque needed by valve = 100N.m
The torque considered safety factor (1+30%) = 130N.m
Air Supply = 5Bar
According to the above table, we can choose the minimum model is TBNS-105DA.
Output Torque with Spring Return
Output Torque of Pneumatic Actuator with Spring Return
| Model | Spring Qty. | Output Torque of Spring | Output Torque of Air Supply | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3bar | 4bar | 5bar | 6 bar | 7bar | |||||||||
| 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° | ||
| TBNS-052SK | 5 | 3.6 | 5.4 | 6.5 | 4.6 | 10.8 | 8.6 | ||||||
| 6 | 4.3 | 6.7 | 6 | 3.3 | 10.2 | 7.3 | |||||||
| 7 | 5.1 | 7.9 | 9.6 | 6.1 | 13.7 | 10.1 | |||||||
| 8 | 5.8 | 9.2 | 9 | 4.8 | 13 | 8.8 | |||||||
| 9 | 6.6 | 10.4 | 8.4 | 3.6 | 12.4 | 7.6 | 16.4 | 11.6 | |||||
| 10 | 7.3 | 11.7 | 7.8 | 2.3 | 11.8 | 6.3 | 15.7 | 10.3 | 19.6 | 14.3 | |||
| 11 | 8.1 | 12.9 | 11.1 | 5.1 | 15 | 9.1 | 18.8 | 13.1 | |||||
| 12 | 8.8 | 14.2 | 10.5 | 3.8 | 14.3 | 7.8 | 18 | 11.8 | |||||
| TBNS-063SK | 5 | 6.1 | 12 | 16.3 | 10.6 | 23.2 | 17.7 | ||||||
| 6 | 7.3 | 13.7 | 14.5 | 7.9 | 21.4 | 15 | |||||||
| 7 | 8.6 | 15.5 | 19.7 | 12.4 | 26.6 | 19.5 | |||||||
| 8 | 9.8 | 17.2 | 17.9 | 9.8 | 25 | 17 | |||||||
| 9 | 11.1 | 19 | 16.2 | 7.2 | 23.3 | 14.4 | 30.4 | 21.7 | |||||
| 10 | 12.3 | 20.7 | 14.4 | 4.5 | 21.6 | 11.9 | 28.8 | 19.2 | 35.9 | 26.5 | |||
| 11 | 13.6 | 22.5 | 19.9 | 9.3 | 27.1 | 16.7 | 34.4 | 24.1 | |||||
| 12 | 14.8 | 24.2 | 18.2 | 6.7 | 25.5 | 14.2 | 32.8 | 21.7 | |||||
| TBNS-075SK | 5 | 9.5 | 14.3 | 18.8 | 14.1 | 28.2 | 23.5 | ||||||
| 6 | 11.4 | 17.1 | 16.9 | 11.3 | 26.3 | 20.7 | |||||||
| 7 | 13.3 | 20 | 15 | 8.5 | 24.4 | 17.9 | |||||||
| 8 | 15.2 | 22.8 | 22.6 | 15 | 32 | 24.4 | |||||||
| 9 | 17.1 | 25.7 | 20.7 | 12.2 | 30.1 | 21.6 | 39.5 | 31 | |||||
| 10 | 19 | 28.5 | 18.8 | 9.4 | 28.2 | 18.8 | 37.6 | 28.2 | 47 | 37.6 | |||
| 11 | 20.9 | 31.4 | 16.9 | 6.6 | 26.3 | 16 | 35.7 | 25.4 | 45.1 | 34.8 | |||
| 12 | 22.8 | 34.2 | 24.4 | 13.2 | 33.8 | 22.6 | 43.2 | 32 | |||||
Sizing: Spring Return Actuators
The suggested safety factor for spring return actuator under normal working conditions is 30-50%
Example：
The torque needed by valve = 80N.m
The torque consider safety factor (1+30%) = 104 N.m
Air Supply = 5Bar
According to the table of spring return actuators’ output, we find output torque of TBNS140 K7 is:
Air stroke 0° = 308N.m | Air stroke 90° = 247N.m | Spring stroke 90° = 181N.m | Spring stroke 0° = 120N.m
All the output torque is larger than we needed.
Attention: During the restoration, the spring return actuators’ output torque will not be affected by the inputing air from the port B. On the contrary, it will help the restoration of springs.
The torque needed by valve = 80N.m
The torque consider safety factor (1+30%) = 104 N.m
Air Supply = 5Bar
According to the table of spring return actuators’ output, we find output torque of TBNS140 K7 is:
Air stroke 0° = 308N.m | Air stroke 90° = 247N.m | Spring stroke 90° = 181N.m | Spring stroke 0° = 120N.m
All the output torque is larger than we needed.
Attention: During the restoration, the spring return actuators’ output torque will not be affected by the inputing air from the port B. On the contrary, it will help the restoration of springs.
Operating Conditions
| 1. Operating media | Dry or lubricated air, the non-corrosive gases or oil. |
| 2. Air supply pressure | Double acting: 2~8 Bar; Spring return: 2~8 Bar |
| 3. Operating temperature | Standard: -20℃~+80℃ | Low temperature: -40℃~+80℃ | High temperature: -20℃~+150℃ |
| 4. Travel adjustment | Have adjustment range of ±4° for the rotation at 90° |
| 5. Lubrication | Under normal operating condition, need not accrete lubricant |
| 6. Application | Either indoor or outdoor |
| 7. Highest pressure | The maximum input pressure is 10 Bar |
Spring mounting form for spring return actuators
Note
Make sure that the torque necessary to operate the valve is compatible with the actuator torque (it depends on both actuator type and air supply). Please note that the requested torque depends not only on the valve, but on the working conditions and the safety margins of the plant in question, too.
Mounting Connection and Dimension
TBNS Series Actuator Dimension Table
| Model | A | B | C | D | AND | F | G | H | I | N | J | K | L | M | Air Connection |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TBNS-052 | 146 | 72 | 45 | 92 | 47 | 32 | 13 | 80 | 30 | 11 | Φ50 | Φ36 | M6*10 | M5*8 | G1/4″ |
| TBNS-063 | 173 | 88 | 50 | 108 | 54 | 39 | 18 | 80 | 30 | 14 | Φ70 | Φ50 | M8*13 | M6*10 | G1/4″ |
| TBNS-075 | 184 | 99.5 | 60 | 119.5 | 61.5 | 44 | 19 | 80 | 30 | 14 | Φ70 | Φ50 | M8*13 | M6*10 | G1/4″ |
| TBNS-083 | 211 | 108 | 65 | 128 | 65.5 | 48 | 19 | 80 | 30 | 17 | Φ70 | Φ50 | M8*13 | M6*10 | G1/4″ |
| TBNS-092 | 262 | 118 | 65 | 138 | 73 | 52.5 | 22 | 80 | 30 | 17 | Φ70 | Φ50 | M8*13 | M6*10 | G1/4″ |
| TBNS-105 | 270 | 133 | 70 | 153 | 77 | 60 | 26 | 80 | 30 | 22 | Φ102 | Φ70 | M10*15 | M8*13 | G1/4″ |
| TBNS-125 | 302 | 155 | 80 | 185 | 87 | 69.5 | 27 | 130 | 30 | 22 | Φ102 | Φ70 | M10*15 | M8*13 | G1/4″ |
| TBNS-140 | 394 | 172 | 90 | 202 | 95.5 | 77 | 32 | 130 | 30 | 27 | Φ125 | Φ102 | M12*20 | M10*16 | G1/4″ |
| TBNS-160 | 456 | 198 | 100 | 228 | 106 | 89 | 32 | 130 | 30 | 27 | Φ125 | Φ102 | M12*20 | M10*16 | G1/4″ |
| TBNS-190 | 528 | 230 | 120 | 260 | 131 | 104 | 40 | 130 | 30 | 36 | Φ140 | M16*24 | G1/4″ | ||
| TBNS-210 | 532 | 255 | 140 | 285 | 140 | 115 | 40 | 130 | 30 | 36 | Φ140 | M16*24 | G1/4″ | ||
| TBNS-240 | 608 | 292 | 160 | 322 | 160 | 134 | 48 | 130 | 30 | 46 | Φ165 | M20*28 | G1/4″ | ||
| TBNS-270 | 714 | 331 | 160 | 361 | 180 | 147 | 48 | 130 | 30 | 46 | Φ165 | M20*28 | G1/2″ | ||
| TBNS-300 | 783 | 354 | 176 | 384 | 194 | 160 | 60 | 130 | 30 | 46 | Φ165 | M20*25 | G1/2″ | ||
| TBNS-350 | 926 | 414 | 215 | 444 | 227 | 188 | 60 | 130 | 30 | 55 | Φ165 | M20*25 | G1/2″ | ||
| TBNS-400 | 940 | 464 | 220 | 491 | 227 | 246 | 60 | 130 | 30 | 55 | Φ254 | Φ165 | M16*25 | M20*25 | G1/2″ |
Mounting Standard
Frequently Asked Questions (FAQ)
What materials are used in the construction of TBNS Series actuators?
The body, pistons, and end-caps of the TBNS Series actuators are constructed from high-grade ASTM316L, 316, or 304 stainless steel with an electro-polish finish to provide maximum resistance to corrosive chemicals and industrial atmospheres.
What standard specifications do the TBNS Series actuators comply with?
They fully conform to the latest international standards including ISO5211, DIN3337, and Namur. This ensures standard dimensions for product interchangeability and easy mounting of solenoids, limit switches, and other control accessories.
What are the operating temperature limits for these actuators?
The TBNS Series offers three temperature configurations: Standard (-20℃ to +80℃), Low Temperature (-40℃ to +80℃), and High Temperature (-20℃ to +150℃), making them suitable for extreme environments.
How do I size a double acting or spring return pneumatic actuator?
For normal working conditions, we suggest a safety factor of 20%-30% for double acting actuators and 30%-50% for spring return actuators to ensure reliable operation under varying pipeline pressures.
Do the TBNS Series actuators require regular lubrication?
Under normal operating conditions, these actuators are pre-lubricated during assembly and do not require additional lubricant throughout their standard operating life cycle.