Type SM / HF-AR
Annular-ring couplings for very low starting torque and controlled acceleration of conveyors.
Annular ring + extra-long delayfil chamber.
Type AR fluid couplings are built with an annular ring and an extra-long delayfil chamber. During the initial rotation the annular ring fills up and the working circuit is partially emptied, enabling very low torque transmission during motor run-up. This gives very quick acceleration of motor speed and rapid decay of motor current.
Acceleration is then followed by a controlled increase in transmitted torque as the delayfil chamber oil empties gradually into the working circuit. Torque is built up smoothly, delivering a controlled acceleration torque to the driven machine — ideal for the high-inertia, long-run starting demands of belt conveyors.
SM-DX-AR couplings are built with a hollow shaft on one end and a rubber coupling on the other end. HF-DX-AR couplings are radially displaceable fluid couplings with metallic disc couplings on both ends.
Key data
Built for controlled, low-torque conveyor starts
- Annular-ring construction with an extra-long delayfil chamber for staged oil transfer
- Very low torque transmission during motor run-up — fast motor acceleration and quick current decay
- Controlled, gradual build-up of acceleration torque to the driven machine
- Purpose-designed starting-torque characteristic for belt conveyor applications
- SM-DX-AR: hollow shaft on one end, rubber coupling on the other
- HF-DX-AR: radially displaceable design with metallic disc couplings on both ends
- Models SM-9 DX-AR through SM-13 DX-AR to suit a wide ratings band
- Choice of connected flexible coupling to match shaft sizes and alignment needs
Rating table — SM & HF-AR
Maximum ratings in KW at different input speeds (RPM). The SM-DX-AR and HF-DX-AR ranges share the same rating band. For final selection, please consult Fluidomat application engineering.
| Model | 600 | 730 | 900 | 970 | 1200 | 1470 | 1800 |
|---|---|---|---|---|---|---|---|
| SM / HF-9 | 12 | 22 | 41 | 52 | 98 | 172 | 246 |
| SM / HF-9B | 16 | 29 | 54 | 68 | 129 | 228 | 300 |
| SM / HF-10 | 22 | 39 | 73 | 91 | 172 | 275 | 370 |
| SM / HF-10B | 32 | 57 | 107 | 134 | 253 | 373 | 500 |
| SM / HF-11 | 47 | 85 | 158 | 198 | 374 | 525 | 775 |
| SM / HF-12 | 82 | 148 | 278 | 348 | 600 | 750 | — |
| SM / HF-13 | 163 | 293 | 550 | 620 | 850 | 1100 | — |
Ratings apply to both the SM-DX-AR (hollow-shaft) and HF-DX-AR (disc-coupled) variants.
Technical specification & dimensions
Full dimension, connected-flexible-coupling, brake-drum and mass-moment-of-inertia data, as published by Fluidomat.
Connected Flexible Coupling Model Wise SM-DX AR
| Model SM, SMD , SM-DX | Internal Hub | External Hub | ||||
|---|---|---|---|---|---|---|
| ød1 Max. | Ø 1 | L1 | ød2 Max. | Ø 2 | L2 | |
| 9 | 90 | 102 | 87 | 100 | 120 | 195 |
| 9B,10 | — | — | — | 125 | 150 | 230 |
| Model SM, SMD, SM-DX | Pad Type Coupling | ||
|---|---|---|---|
| ød3 Max. | Ø 3 | L3 | |
| 9B,10 | 100 | 110 | 120 |
| 10B,11 | 120 | 140 | 151 |
| 12 | 140 | 155 | 167 |
| 13 | 160 | 180 | 179 |
| 14 | 160 | 180 | 194 |
| 15 | 180 | 200 | 214 |
Dimension Table SM-HF-DX-AR
| COUPLING MODEL | ø A | B | ød1/ød4 | Ø 1 / Ø 4 | *DRY WT (KGS) |
|---|---|---|---|---|---|
| HF-9 DX-AR | 604 | 546 | 95 | 110 | 143 |
| HF-9B DX-AR | 640 | 589 | 95 | 125 | 192 |
| HF-10 DX-AR | 670 | 611 | 110 | 125 | 198 |
| HF-10B DX-AR | 739 | 632 | 110 | 125 | 247 |
| HF 11 DX-AR | 776 | 661 | 120 | 125 | 310 |
| HF-12 DX-AR | 870 | 820 | 130 | 200 | 440 |
| HF-13 DX-AR | 985 | 875 | 150 | 200 | 620 |
| HF-14 DX-AR | 1130 | 943 | 160 | 200 | 723 |
| HF-15 DX-AR | 1255 | 1016 | 160 | 200 | 1134 |
Diagrams & views
Engineered for conveyor drives
Need a controlled-start coupling for your conveyor?
Send us your conveyor duty, motor rating and speed, and our engineers will recommend the right SM-AR or HF-AR model.