RLQA Diaphragm Coupling

No Flange, Quick Installation

Suitable for various industrial process pumps, fans, and other medium to low speed applications, with a maximum speed generally not exceeding 25000 rpm. It meets the requirements of API610/ISO14691 and is one of the first products for API applications.

Model	DA	D1/D2	D3	d1/d2max)	d4	L1/L2 min	E(min)	L	Maximum Allowable Speed	Nominal Torque	Maximum Instantaneous Torque
Model	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	n max(r/min)	T(N.m)	Tmax(N.m)
RLQA85-4	85	52	41	35	30	40	80	160	24000	40.5	310
RLQA96-4	96	64	46	45	35	50	80	180	21000	67	420
RLQA105-4	105	73	56	50	45	60	85	205	18900	150	750
RLQA125-4	125	93	70	65	58	75	95	245	15200	205	1495
RLQA135-4	135	103	80	75	68	85	100	270	14750	410	1780
RLQA152-4	152	120	90	85	78	100	110	310	13500	1000	3100
Model	Mass Point G	Angular Deviation	Maximum axial deviation	S	Intermediate Mass m	Intermediate moment of inertia	Intermediate torsional stiffness	Weight M	Torsional Stiffness	Rotational Inertia	Tightening torque
Model	(mm)	(±△o)	(Max±△mm)	(mm)	10-3kg/mm	Js10-6(Kg.m2/mm)	Ct-106(Nm.mm/rad)	(Kg)	Ct-106(N.m/rad)	Js10-6(Kg.m2/mm)	F' (N.m)
RLQA85-4	24.22	1°	1	7.2	4.32	1	14	3.1	26	2	10
RLQA96-4	29.1		1.25	7.2	4.92	2	20	3.85	28	4	10
RLQA105-4	34.07		1.4	8.4	6.17	4	40	5.54	38	8	10
RLQA125-4	42.094		1.7	9.5	7.74	10	99	9.45	41	18	10
RLQA135-4	47.571		1.95	10.7	10.95	15	154	11.5	60	26	10
RLQA152-4	54.879		2	11.1	12.43	22	225	16.5	95	49	10

Model	DA	D1/D2	D3	d1/d2max)	d4	L1/L2 min	E(min)	L	Maximum Allowable Speed	Nominal Torque	Maximum Instantaneous Torque
Model	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	n max(r/min)	T(N.m)	Tmax(N.m)
RLQA103-6	103	70	55	48	49	55	80	190	20000	400	1200
RLQA125-6	125	90	65	60	58	70	90	230	17000	630	2500
RLQA145-6	145	107	84	75	75	85	90	280	14300	1400	3300
RLQA158-6	158	125	94	90	85	100	95	295	12200	2000	6500
RLQA175-6	175	145	108	105	99	120	125	365	10000	3500	10500
RLQA205-6	205	163	127	125	117	130	125	385	9800	4250	13000
RLQA235-6	235	195	150	140	140	160	135	455	8200	8000	24000
RLQA255-6	255	202	163	150	150	170	145	485	7500	11850	33500
RLQA280-6	280	230	182	165	167	185	175	545	6780	21500	45000
RLQA300-6	300	250	198	180	182	200	175	575	6300	26500	51600
RLQA320-6	320	265	219	190	200	210	195	615	5800	38500	77000
RLQA370-6	370	306	242	220	220	240	220	700	5100	40000	11000
Model	Mass Point G	Angular Deviation	Maximum axial deviation	S	Intermediate Mass m	Intermediate moment of inertia	Intermediate torsional stiffness	Weight M	Torsional Stiffness	Rotational Inertia	Tightening torque
Model	(mm)	(±△o)	(Max±△mm)	(mm)	10-3kg/mm	Js10-6(Kg.m2/mm)	Ct-106(Nm.mm/rad)	(Kg)	Ct-106(N.m/rad)	Js10-6(Kg.m2/mm)	F' (N.m)
RLQA103-6	52.41	0.65°	0.8	8	3.8	3	25	4.5	47	5	10
RLQA125-6	61.485		1	11	5.3	5	51	7.6	151	13	10
RLQA145-6	67.9		1.15	11	8.82	14	143	12.1	150	31	10
RLQA158-6	81.4		1.3	15	10	20	203	17.2	217	57	10
RLQA175-6	96.6		1.5	15	11.5	31	314	29	472	129	10
RLQA205-6	102		1.75	20	15	56	571	36.9	478	203	25
RLQA235-6	120.2		1.8	22	20	105	1066	51.4	894	483	25
RLQA255-6	132		1.8	24	23	146	1489	73.1	1502	671	85
RLQA280-6	142.7		1.9	30	30.1	232	2361	102.9	1517	115	85
RLQA300-6	149.1		1.9	32	33	301	3089	123.3	1562	160.6	85
RLQA320-6	164.3		2.4	34	44	490	4989	165.9	2622	258	210
RLQA370-6	185.5		3	34	57.5	771	7860	238.1	4242	466.7	210

Model	DA	D1/D2	D3	d1/d2max)	d4	L1/L2 min	E(min)	L	Maximum Allowable Speed	Nominal Torque	Maximum Instantaneous Torque
Model	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	n max(r/min)	T(N.m)	Tmax(N.m)
RLQA205-8	207	168	135	120	123	120	125	385	9500	8000	19500
RLQA235-8	240	190	152	135	138	150	145	445	8000	16000	47800
RLQA255-8	258	207	164	145	149	160	175	485	7500	25000	63000
RLQA300-8	302	247	198	175	184	200	175	575	6500	31500	73700
RLQA345-8	346	295	234	210	217	240	195	675	5500	40000	123000
RLQA370-8	372	306	248	220	228	240	220	700	5200	63000	165000
RLQA400-8	402	327	257	240	232	270	240	780	4750	80000	228000
RLQA435-8	435	356	293	250	270	280	240	800	4400	100000	254000
RLQA485-8	485	406	327	290	300	320	295	935	3900	140000	400000
RLQA540-8	540	447	374	320	344	350	295	995	3500	200000	448000
RLQA610-8	610	517	410	370	375	410	320	1145	3200	250000	669000
Model	Mass Point G	Angular Deviation	Maximum axial deviation	S	Intermediate Mass m	Intermediate moment of inertia	Intermediate torsional stiffness	Weight M	Torsional Stiffness	Rotational Inertia	Tightening torque
Model	(mm)	(±△o)	(Max±△mm)	(mm)	10-3kg/mm	Js10-6(Kg.m2/mm)	Ct-106(Nm.mm/rad)	(Kg)	Ct-106(N.m/rad)	Js10-6(Kg.m2/mm)	F' (N.m)
RLQA205-8	116.4	0.5°	1	20	19.1	80	811	58	904	438	25
RLQA235-8	121.5		1.1	22	25.1	132	1344	63.5	2614	504	25
RLQA255-8	133.4		1.2	24	29	178	1810	88	3069	862	85
RLQA300-8	151.5		1.5	30	33	301	3069	126	3909	1597	85
RLQA345-8	174.4		1.9	32	42.5	602	6133	197.5	5365	3484	85
RLQA370-8	187.4		2.1	34	59	833	8485	235.1	9043	4677	210
RLQA400-8	207.2		2.4	34	75.5	1129	11509	316	9109	7329	210
RLQA435-8	212.5		2.6	36	80	1504	16140	372.5	15450	10010	410
RLQA485-8	245.2		2.75	38	105	2570	26183	538	20380	18490	410
RLQA540-8	262.4		3	38	133	4290	43682	696	23350	29500	710
RLQA610-8	302.1		3.5	44	169	6870	700033	1055	33720	57570	710

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Steel Lamina Coupling

RLQA Diaphragm Coupling

RLQA Diaphragm Coupling