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Home Shop TBNS Series Stainless Steel Pneumatic Actuator
8-1

TBNS Series Stainless Steel Pneumatic Actuator

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Model:TBNS052-TBNS210DA/SR,8 models,material 304ss or 316ss,output torque 20N.m ~1330N.m at 5bar air supply,ISO5211/DIN3337 to match valve connection, Namur interface for the accessories,±5°adjustment,with ATEX certification.

 

Categories: Pneumatic actuator, TBNS Series stainless steel Rack &pinion pneumatic actuators
  • Description

Description

 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

Designing features

ASTM316L、316、304、303 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

8-2

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 66 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

 1

Mounting connection and dimension

Model
A
B
C
D
E
F
G
H
I
J
K
L
M
N
Air
TBNS052
146
74
30
94
47
32
14
80
30
F05
F03
M6x10
M5x8
11
G1/4
TBNS063
173
88
26
108
54
38
18
80
30
F07
F05
M8x13
M6x12
14
G1/4
TBNS083
204
109
48
129
66
48
21
80
30
F07
F05
M8x13
M6x12
17
G1/4
TBNS105
270
133
50
153
77
60
24
80
30
F10
F07
M10x16
M8x14
22
G1/4
TBNS125
302
155
58
175
87
70
27.5
80
30
F10
F07
M10x16
M8x14
22
G1/4
TBNS140
394
172
69
192
96
77
32
80
30
F12
F10
M12x20
M10x18
27
G1/4
TBNS160
456
198
75
217
106
87.5
34
80
30
F12
F10
M12x20
M10x18
27
G1/4
TBNS210
568
257
90
285
133
113
40
130
30
F14
 
M16x24
 
36
G1/4

Output torque of double acting actuator 

3

Model     Air pressure(Bar)
3.0 4.0 5.0 6.0 7.0 8.0
TBNS052D 11.6 15.4 19.2 23.0 26.8 30.6
TBNS063D 20.9 28.1 35.3 42.4 49.6 56.8
TBNS083D 44.0 58.7 73.5 88.2 102.9 117.6
TBNS105D 95.6 127.2 158.8 190.4 222.0 253.6
TBNS125D 145.3 193.9 242.5 291.1 339.6 388.2
TBNS140D 245.4 328.0 410.5 493.1 575.6 658.2
TBNS160D 369.9 496.6 623.3 750.0 876.7 1003.4
TBNS210D 798 1064 1330 1596 1862 2128

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.mAir Supply=5Bar
According to the table of spring return actuators’ output, we find output torque of TBNS140SK7 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.

Spring mounting form for spring return actuators

4

Note:

Make sure that the torque necessary to operate the valve is compatible with the actuator torque (it depens 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.

Operating Principle11

Previous

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