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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (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 |
| (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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (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 |
| (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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (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 |
| (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 |