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Sprag one-way clutch FDN series
internalbearingindexing

Sprag one-way clutch - FDN series - RINGSPANN - internal / bearing / indexing
Sprag one-way clutch - FDN series - RINGSPANN - internal / bearing / indexing
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Characteristics

Technology
sprag
Construction
bearing, internal
Applications
backstop, overrunning clutch, indexing
Torque

Min.: 16 Nm
(11.800994 ft.lb)

Max.: 2,400 Nm
(1,770.149158 ft.lb)

Diameter

Min.: 8 mm
(0.31 in)

Max.: 80 mm
(3.15 in)

Rotational speed

Min.: 800 rad.min-1
(127.324 rpm)

Max.: 3,925 rad.min-1
(624.6832 rpm)

Description

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 In the case of the standard type, every second sprag has been replaced by a cylindrical roller; this freewheel can accept radial forces.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 as
  • Backstop
  • Overrunning Clutch
  • Indexing Freewheel



Catalogs

Exhibitions

Meet this supplier at the following exhibition(s):

HILLHEAD
HILLHEAD

23-25 Jun 2026 Buxton (United Kingdom) Stand RD21

  • More information
    EXPOSIBRAM
    EXPOSIBRAM

    24-27 Aug 2026 Belo Horizonte (Brazil)

  • More information
    See all exhibitions

    Other RINGSPANN products

    Freewheels

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.