Coupling drive (for all types of fan)
This description is applicable to Arrangement Nos. 7 8 and 17. A flexible coupling permitting limited misalignment is now normally used. The motor may be removed for maintenance purposes without disturbing the fan alignment. Arrangements 8 and 17 are particularly appropriate for large high powered fans and there are generally no limitations on the power to be transmitted.
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Single-inlet fan for coupling drive.
Generally as arrangement 3 but with a base for the driving motor.
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Single-inlet fan for coupling drive.
Generally as arrangement 1 plus an extended base for the driving motor.
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WorZ |
Single-inlet fan for coupling drive.
Generally as arrangement 1 but with the motor mounted on the outside of the bearing pedestal.
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10 |
Single-inlet fan for belt drive.
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‘HBt |
Generally as arrangement 1 but with the drive motor inside the bearing pedestal.
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"fczdh ■ W 69 № |
For belt drive.
Impeller overhung on shaft running in 2 bearings, suitably supported.
For belt drive.
Impeller overhung on shaft running between bearings and supported by fan housing.
For direct drive.
Impeller overhung on driving motor shaft. No bearings on fan. Driving motor base-mounted or integrally direct — connected.
For coupling drive.
Generally as arrangement 3 but with a base for the driving motor.
For coupling drive.
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Ta |
Generally as arrangement 1 plus an extended base for the driving motor.
For belt drive.
Generally as arrangement 1 but with a driving motor outside and supported by the fan casing.
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WorZ (very rarely XorY) |
11 For belt drive.
Generally as arrangement 3 but with fan and driving motor outside and supported by a common base frame
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Posted in Fans Ventilation A Practical Guide