FDN series
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Catalog excerpts

FDN series - 1

Internal Freewheels FDNfor press fit on the outer ring with sprags Application as Backstop ► Overrunning Clutch ► Indexing Freewheel Features Internal Freewheels FDN are sprag freewheels with anti-friction bearing dimensions. The standard type does not have bearing support. In the case of the standard type, every second sprag has been replaced by a cylindrical roller; this freewheel can accept radial forces. Nominal torques up to 2 400 Nm.The torque is transmitted on the outer ring by press fit. Bores up to 80 mm. A multitude of standardized bore diameters are available with short delivery times. Application example Internal Freewheel FDN 40 CFR in standard type with bearing support as an overrunning clutch on the shaft end of the main drive of a textile machine.The gear wheel is linked to an auxiliary drive. In normal operation (freewheeling operation) the inner ring overruns and the gear wheel with the pressed-in outer ring is at a standstill. During set-up, the machine is driven by the slowly running auxiliary drive via the gear wheel and the freewheel that is working in driving operation.

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FDN series - 2

Internal Freewheels FDNfor press fit on the outer ring with sprags 81-1 ■ Freewheels with bore diameters highlighted blue in the table are available with short delivery times. The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque. The maximum speed values listed above apply to installation conditions as they are given for Complete Freewheels. If the actual installation conditions are known, higher speeds may be permitted under certain circumstances. Keyway according to DIN 6885,page 1 • Tolerance of keyway width JS10. *...

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