Aluminium Scotch Yoke Spring return Pneumatic Actuator

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Spring return pneumatic actuator

Aluminium Scotch Yoke Spring return Pneumatic Actuator -Scotch yoke design can generate large opening and closing torque - Piston multiple guides, smooth operation - Precision machined parts ensure safe operation and long service life -Low air consumption

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Product Detail

Aluminium Scotch Yoke Spring return Pneumatic Actuator Specification：

Comply to UNI EN 15714-3:2009 standard

ISO connection standard：UNI EN ISO 5211。

Auxiliary connectioin：NAMUR,VDI/VDE3845

Control angle：90°(-5°~+3°)。

Torque：Relative to control pressure and type.

Working Condition：

Operation temperature：-20℃~+80℃

Pressure：2-8bar

Operating Medium：Filtered compressed air dry or lubricated.The pressure condensation point in accordance with (ISO 8573-1:2010, Class 3)has to be ≤ - 20℃ or 10℃under ambient temperature.

The maximum particle size in accordance with (ISO 8573-1:2010, Class 5) should not exceed 40 µm.

Aluminium Scotch Yoke Spring return Pneumatic Actuator Features：

Aluminium Scotch Yoke Spring return Pneumatic Actuator Structure Diagram

1.Modular spring pack

According to different air pressure with different spring combination, low stress spring design can effectively extend the service life of the spring.

2.Corrosion-resistant connectors

All connection bolts are stainless steel with good corrosion resistance.

3.Piston ring

The piston guide ring, made of ultra high molecular polymer, has an extremely low coefficient of friction, while the material has high hardness and excellent wear resistance, providing precise guidance and long service life.

4.Body

The cylinder body is processed with high precision and anodized. The thickness of the oxide layer is more than 20μm. It has low friction coefficient and excellent anti-corrosion and wear resistance.

5.Shaft bearing

Prevent direct contact between shaft and cylinder body, ensure the positioning accuracy of drive shaft, reduce friction loss, make the actuator efficient operation.

6. Piston bearing

Ensure the positioning accuracy of the piston, so that the piston can be smooth and smooth operation, prevent shifting.

7. Pin connection

The fork and the drive shaft are connected by pins to ensure that the fork and the drive shaft run synchronously. At the same time, the pins also play a role in preventing the drive shaft from flying out, which is a reliable and safe design.

Torque table （Nm）：

Model	Spring package	Spring torque（Nm.）			Output torque at different air supply pressures（Nm）
		Spring torque（Nm.）			2,5 bar / 36psi			3,0 bar / 44psi			4,0 bar / 58psi			5,0 bar / 73psi			5,5 bar / 80psi			6,0 bar / 87psi			7,0 bar / 101psi			8,0 bar / 116psi
		0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°	0°	45°	90°
SA60	K11	14	10	19	19	8	10	26	12	15	38	19	26
	K12	18	13	25				22	9	10	34	16	21	47	23	32
	K22	22	16	31				18	6	4	30	13	15	43	20	26	49	23	32
	K13	25	18	34							28	11	12	41	18	23	47	22	29	53	25	34
	K23	29	21	40										37	15	18	43	19	23	50	22	29	62	29	40
	K33	36	26	50																43	18	20	56	25	31	69	32	42
SA70	K11	26	18	36	38	16	19	50	23	30	74	36	51
	K12	34	24	47				43	18	19	67	31	41	91	44	62
	K22	42	30	59				35	12	9	60	26	30	84	39	51	96	45	62
	K13	47	34	65							55	22	24	80	36	45	92	42	56	104	49	66
	K23	55	39	77										72	30	35	85	37	45	97	44	56	121	57	77
	K33	68	49	95																85	35	39	110	49	60	134	62	82
SA80	K11	42	29	56	60	27	33	80	37	50	119	59	84
	K12	57	39	74				67	29	33	106	50	68	146	71	102
	K22	71	49	92				54	20	17	93	41	51	133	63	85	152	73	103
	K13	78	54	103							87	37	41	127	58	76	146	69	93	166	79	110
	K23	92	63	120										114	49	59	133	60	76	156	71	98	192	92	128
	K33	114	78	149																134	57	67	173	79	101	213	100	135
SA90	K11	68	48	91	85	36	42	114	52	68	173	84	119
	K12	87	61	117				98	40	44	156	72	95	215	104	146
	K22	105	74	142				81	28	20	140	60	71	198	92	122	228	108	148
	K13	121	85	162							125	50	52	184	82	104	213	98	129	243	114	155
	K23	140	98	188										167	70	80	197	86	105	226	102	131	285	134	182
	K33	174	122	234																195	80	88	254	112	139	313	144	190
SA100	K11	92	64	122	132	59	74	176	82	111	262	129	187
	K12	122	85	162				149	63	74	235	110	149	321	157	225
	K22	152	106	202				122	44	37	208	91	112	294	138	187	337	162	225
	K13	168	117	223							193	81	92	280	128	167	323	151	205	366	175	243
	K23	198	137	263										253	109	130	296	132	168	339	156	205	425	203	281
	K33	244	169	324																297	127	148	383	174	223	470	220	299
SA125	K11	158	109	209	227	101	126	301	141	190	448	221	319
	K12	208	144	275				256	109	129	403	190	257	551	270	386
	K22	257	178	341				211	78	67	358	158	195	506	238	324	580	278	389
	K13	286	199	379							332	140	159	480	220	288	554	260	352	627	300	417
	K23	336	233	445										435	189	226	509	229	291	583	269	355	730	349	484
	K33	415	288	550																511	219	257	659	299	386	807	379	515
SA140	K11	214	148	281	298	132	165	397	186	251	594	293	423
	K12	275	190	362				342	147	176	538	254	347	735	361	519
	K22	337	232	442				286	109	100	483	216	272	680	323	443	778	376	529
	K13	383	264	502							442	187	215	638	294	387	737	347	473	835	401	558
	K23	444	306	583										583	255	312	682	309	397	780	362	483	977	469	655
	K33	551	380	723																683	295	351	880	402	523	1077	509	694
SA160	K11	323	223	425	452	201	250	601	281	380	899	443	639
	K12	408	282	536				525	228	275	822	390	535	1120	551	794
	K22	493	340	648				448	175	171	746	337	431	1043	498	690	1192	579	820
	K13	569	393	749							676	288	336	974	450	595	1123	530	725	1271	611	854
	K23	654	452	860										897	396	491	1046	477	620	1195	558	750	1492	720	1010
	K33	816	563	1073																1049	456	551	1347	618	810	1644	779	1070
SA180	K11	408	305	593	630	279	348	837	392	529	1252	617	891
	K12	524	392	763				721	311	370	1137	536	732	1552	762	1094
	K22	639	479	933				606	230	211	1021	456	573	1436	681	935	1643	794	1116
	K13	728	544	1060							933	395	454	1348	620	816	1555	733	997	1763	845	1178
	K23	843	631	1230										1232	539	657	1439	652	838	1647	764	1019	2062	990	1380
	K33	1047	783	1526																1443	622	740	1858	848	1102	2273	1073	1464
SA220	K11	708	531	1035	1215	550	706	1599	759	1042	2369	1176	1712
	K12	945	709	1383				1363	593	715	2132	1010	1386	2901	1428	2057
	K22	1182	887	1732				1126	427	389	1895	844	1060	2664	1262	1730	3049	1471	2066
	K13	1299	974	1901							1778	763	901	2547	1181	1572	2932	1390	1907	3316	1599	2242
	K23	1536	1152	2249										2310	1015	1245	2695	1224	1580	3080	1433	1916	3849	1850	2587
	K33	1890	1417	2767																2725	1185	1431	3495	1603	2101	4264	2021	2772
SA260	K11	1187	1046	2235	2765	1171	1351	3555	1600	2040	5136	2459	3418
	K12	1746	1406	2865				2997	1265	1449	4578	2123	2827	6158	2981	4206
	K22	2304	1766	3496				2438	929	858	4019	1787	2236	5600	2646	3615	6390	3075	4304
	K13	2339	1929	3983							3984	1636	1780	5565	2494	3158	6355	2923	3847	7146	3352	4536
	K23	2898	2289	4613										5006	2158	2567	5797	2588	3256	6587	3017	3945	8168	3875	5324
	K33	3492	2812	5730																5993	2529	2898	7574	3388	4276	9155	4246	5654
FC：Spring0°-ETC，Spring45°-RTC，Spring90°-BTC； Air Pressure0°-BTO，Air Pressure45°-RTO，Air Pressure90°-ETO
FO：Spring0°-ETO，Spring45°-RTO，Spring90°-BTO； Air Pressure0°-BTC，Air Pressure45°-RTC，Air Pressure90°-ETC