F40 Flexible Tyre Coupling Tyre, FRAS Fire Resistant
Available
FRAS fire resistant tyres for flexible tyre couplings, in sizes F40 to F180. Flexible tyre couplings join two flanges with a rubber tyre. The tyre is torsionally soft, so the coupling takes up large amounts of shock loading and backlash, and it allows for both parallel and axial misalignment. It compensates for misalignment of up to 4° angular, 6 mm parallel and 8 mm axial, and it gives torsional flexibility of up to 12° at maximum torque. FRAS stands for fire resistant anti-static, and the compound is made for sensitive environments.
The tyre is the flexible element between the two flanges. The ratings below are for each coupling size, and the flange halves are sold separately.
Where this product is used
- Motor to gearbox, pump and fan connections
- Compressor and conveyor drives
- Drives with shock loading, start-stop duty or backlash
- Machinery where the driven shaft is hard to align closely
Features
- FRAS fire resistant anti-static tyre for flexible tyre couplings
- Takes up shock loading, backlash and misalignment
- Sizes F40 to F180
- Nominal torque, maximum torque and maximum speed listed for every size
- Torsional stiffness listed for every size
Key specifications
| Specification | Detail |
|---|---|
| Sizes | F40 to F180 (12 models) |
| Compound | FRAS (fire resistant anti-static) |
| Power at 100 rpm | 0.26 to 65.7 kW |
| Nominal torque | 25 to 6,270 Nm |
| Maximum torque | 64 to 16,455 Nm |
| Maximum speed | 1,500 to 4,500 rpm |
| Misalignment, up to | 4° angular, 6 mm parallel, 8 mm axial |
| Torsional flexibility | Up to 12° at maximum torque |
Sizes available
View all 12 models
| Size | Power 100 rpm (kW) | Nominal torque (Nm) | Max torque (Nm) | Max rpm | Bore min (mm) | Bore max (mm) | Torsional stiffness (Nm/deg) | Parallel (mm) | End float (mm) |
|---|---|---|---|---|---|---|---|---|---|
| F40 | 0.26 | 25 | 64 | 4,500 | 10 | 25 | 5 | 1.1 | 1.3 |
| F50 | 0.69 | 66 | 160 | 4,500 | 11 | 32 | 13 | 1.3 | 1.7 |
| F60 | 1.33 | 127 | 318 | 4,000 | 14 | 42 | 26 | 1.6 | 2 |
| F70 | 2.62 | 250 | 487 | 3,600 | 14 | 50 | 41 | 1.9 | 2.3 |
| F80 | 3.93 | 375 | 759 | 3,100 | 14 | 65 | 63 | 2.1 | 2.6 |
| F90 | 5.24 | 500 | 1,096 | 3,000 | 16 | 65 | 91 | 2.4 | 3 |
| F100 | 7.07 | 675 | 1,517 | 2,600 | 16 | 75 | 126 | 2.6 | 3.3 |
| F110 | 9.2 | 875 | 2,137 | 2,300 | 24 | 75 | 178 | 2.9 | 3.7 |
| F120 | 13.9 | 1,330 | 3,547 | 2,050 | 24 | 100 | 296 | 3.2 | 4 |
| F140 | 24.3 | 2,320 | 5,642 | 1,800 | 35 | 100 | 470 | 3.7 | 4.6 |
| F160 | 39.4 | 3,770 | 9,339 | 1,600 | 40 | 115 | 778 | 4.2 | 5.3 |
| F180 | 65.7 | 6,270 | 16,455 | 1,500 | 55 | 125 | 1,371 | 4.8 | 6 |
Selecting and fitting
Choose the size from the power at the running speed, or from the torque. The rated power rises in proportion to speed, so multiply the kW at 100 rpm by the speed in rpm and divide by 100 to estimate the rating at your speed. Apply a service factor for the type of machine, and check the shaft sizes against the bore range.
The flange halves for these tyres are Flexible Tyre Coupling Half Flange Pilot Bore, Flexible Tyre Coupling Half Flange Taperlock Bush and Flexible Tyre Coupling Half Hub Taperlock Bush.
Isolate the drive before working on the coupling, and replace a cracked or worn tyre. Align the two shafts as closely as you can before fitting the coupling, and check the alignment again once the coupling is fitted. Good alignment gives the longest life, whatever the coupling type.
Dimensions are as listed in the manufacturer catalogue and are for reference. Contact AIMS to confirm a measurement if it is critical to your application.
Sizes F200, F220 are not listed on this product.
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F40
Model Number: F40FRAS
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F50
Model Number: F50FRAS
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F60
Model Number: F60FRAS
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F70
Model Number: F70FRAS
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F80
Model Number: F80FRAS
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F90
Model Number: F90FRAS
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F100
Model Number: F100FRAS
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F110
Model Number: F110FRAS
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F120
Model Number: F120FRAS
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F140
Model Number: F140FRAS
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F160
Model Number: F160FRAS
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F180
Model Number: F180FRAS
