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

Air to Port A forces the pistons outwards, causing the pinion to turn counter clock wise while the air isbeing exhausted from Port B.

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

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.

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	Milk Pressure
Model	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: Spring Return 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.

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
		Output Torque of Spring		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
TBNS-083SK	5	15	20.4	30.2	22.8	45.3	39.2
	6	18	24.6	26.9	17.6	419	33.9
	7	21	28.7			38.5	28.6	53.4	44.8
	8	24	32.9			35.1	23.2	49.9	39.3
	9	27	37.1			31.6	17.9	46.5	33.8	61.3	49.8
	10	30	41.2			28.2	12.6	43	28.4	57.7	44.2	72.5	60.1
	11	33	45.4					39.5	22.9	54.2	38.6	68.9	54.3
	12	36	49.6					36	17.5	50.6	33.1	65.3	48.6
TBNS-092SK	5	22.1	32.3	41	32.6	62.4	53.8
	6	26.5	38.7	36.8	26.4	58.1	47.6
	7	30.9	45.2			53.8	41.4	74.8	62.5
	8	35.3	51.6			49.6	35.2	70.5	56.3
	9	39.7	58.1			45.3	29	66.2	50.1	87.2	71.3
	10	44.2	64.6			41	22.7	61.9	43.9	83	65.1	103.9	86.3
	11	48.6	71.1					57.7	37.7	78.7	58.9	99.6	80.1
	12	53	77.5					53.4	31.5	74.4	52.7	95.3	73.9
TBNS-105SK	5	30.3	45.4	59.9	44.5	92.1	75.5
	6	36.4	54.7	54.7	36.5	86.3	67.1
	7	42.6	63.8			80.6	58.7	111.9	88.8
	8	48.7	72.9			75	50.3	105.7	80
	9	54.9	82.2			69.2	41.9	99.5	71.2	129.9	100.4
	10	60.9	91.3			63.5	33.5	93.4	62.3	123.2	91.1	153.1	119.9
	11	67.1	100.4					87.2	53.5	116.6	81.8	146.1	110.2
	12	73.3	109.7					81.1	44.6	110.1	72.5	139	100.4
TBNS-125SK	5	46.3	72.3	103.4	77.5	154.7	123.9
	6	56	86.4	92.8	59.8	143.6	106.9
	7	65.8	100.6			132.5	89.9	182.9	137.9
	8	75.5	114.8			1214	72.9	171.3	121.6
	9	85.3	128.9			110.4	55.9	159.7	105.4	209	154.8
	10	95	143.1			99.3	38.9	148.1	89.1	196.9	139.3	245.8	189.4
	11	104.8	157.3					136.5	72.9	184.9	123.8	233.2	174.7
	12	114.5	171.4					124.9	56.6	172.8	108.3	220.6	159.9
TBNS-140SK	5	74.7	113.6	177	135.4	258.7	219.4
	6	90.9	139.6	158.2	105.3	240.7	190
	7	107.1	165.6			222.7	160.6	306	245.9
	8	123.2	191.6			204.7	131.2	288.7	217.1
	9	139.4	217.6			186.7	101.8	271.5	188.3	356.2	274.8
	10	155.6	243.6			168.7	72.3	254.2	159.5	339.7	246.7	425.2	333.8
	11	171.7	269.6					237	130.7	323.2	218.5	409.5	306.3
	12	187.9	295.6					219.7	101.9	306.7	190.3	393.7	278.8
TBNS-160SK	5	112.4	190.9	267.7	183	397.4	316.9
	6	137.4	229.9	239.4	140.3	369.6	273.5
	7	162.5	268.9	211.1	97.6	341.8	230.1	472.3	362.5
	8	187.6	307.9			313.9	186.7	444.9	318.3
	9	212.7	346.9			286.1	143.3	417.4	274.2	548.7	405.1
	10	237.8	385.9			258.3	99.8	389.9	230	521.6	360.2	653.3	490.3
	11	262.9	424.9					362.5	185.8	494.5	315.3	626.6	444.7
	12	287.9	463.9					335	141.7	467.4	270.3	599.9	399
TBNS-190SK	5	190	288	406	320	598	533
	6	227	346	372	256	563	469
	7	265	403			529	405	722	619
	8	303	461			495	341	688	555
	9	341	518			461	277	653	491	845	704
	10	379	576			427	213	619	427	811	640	1003	853
	11	417	634					585	363	777	576	968	789
	12	455	691					551	299	743	512	934	725
TBNS-210SK	5	229	367	544	446	817	677
	6	283	446	483	354	757	591
	7	337	526	422	263	696	505	971	801
	8	392	606			636	419	912	711
	9	446	686			576	333	852	622	1128	894
	10	501	765			515	247	793	533	1070	806	1347	1078
	11	555	845					733	444	1011	718	1289	992
	12	609	925					674	354	953	629	1232	905
TBNS-240SK	5	377	566	743	555	1116	928
	6	453	679	667	441	1041	815
	7	529	792			965	702	1338	928
	8	603	905			890	589	1263	815
	9	679	1018			815	476	1187	702	1562	1223
	10	755	1131			739	363	1112	589	1486	1110	1859	1482
	11	830	1245					1036	476	1410	996	1783	1369
	12	906	1357					960	363	1335	884	1707	1256
TBNS-270SK	5	535	864	1133	822	1643	1365
	6	642	1037	1053	661	1563	1204
	7	749	1210			1484	1042	1993	1365
	8	856	1382			1404	881	1913	1204
	9	964	1555			1324	720	1834	1042	2344	1804
	10	1071	1728			1244	559	1754	881	2264	1643	2775	2187
	11	1178	1901					1674	720	2184	1482	2695	2025
	12	1285	2074					1594	559	2105	1320	2616	1864
TBNS-300SK	5	725	1145	1522	1102	2271	1851
	6	870	1374	1377	873	2126	1622
	7	1015	1603			1981	1393	2730	2142
	8	1160	1832			1836	1164	2585	1913
	9	1305	2061			1691	935	2440	1684	3189	2433
	10	1450	2290			1546	706	2295	1455	3044	2204	3793	2953
	11	1595	2519					2150	1226	2899	1975	3648	2724
	12	1740	2748					2005	997	2754	1746	3503	2495
TBNS-350SK	5	1173	1703	2003	1474	3145	2616
	6	1408	2043	1768	1133	2910	2275
	7	1642	2384			2676	1935	3818	3077
	8	1877	2724			2441	1594	3583	2736
	9	2111	3065			2207	1254	3349	2396	4491	3538
	10	2346	3405			1972	913	3114	2055	4256	3197	5398	4339
	11	2581	3746					2879	1715	4021	2857	5413	3999
	12	2815	4086					2645	1374	3787	2516	4928	3658
TBNS-400SK	7	1837	2881	2812	1768
	8	2099	3292	2550	1225
	9	2362	3704	2259	768	3887	2396
	10	2624	4115	1967	311	3595	1939	5223	3567
	11	2886	4527			3303	1482	4931	3110	6559	4738
	12	3149	4938			3012	1025	4641	2653	6268	4281	7895	5908
	13	3411	5350					4348	2195	5976	3823	7603	5450
	14	3674	5761					4057	1738	5685	3366	7312	4993
	15	3936	6173					3765	1281	5393	2909	7020	4536
	16	4198	6584							5101	2452	6728	4079

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 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:-40C~+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 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.

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

Confirm the Right TBNS Series Stainless Steel Pneumatic Actuator

Send the valve type, size and torque, the air supply or voltage, and whether it should fail open, fail close or stay in place. The quotation is confirmed against that duty.

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TBNS Series Stainless Steel Pneumatic Actuator