Sprag one-way clutch FXN series
with internal bearingsinternalwithout bearing function

Sprag one-way clutch - FXN series - SIAM RINGSPANN - with internal bearings / internal / without bearing function
Sprag one-way clutch - FXN series - SIAM RINGSPANN - with internal bearings / internal / without bearing function
Sprag one-way clutch - FXN series - SIAM RINGSPANN - with internal bearings / internal / without bearing function - image - 2
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Characteristics

Technology
sprag
Construction
with internal bearings, internal, without bearing function
Applications
backstop, overrunning clutch
Torque

Max.: 20,500 Nm
(15,120.02406 ft.lb)

Min.: 110 Nm
(81.131836 ft.lb)

Diameter

Max.: 130 mm
(5.12 in)

Min.: 20 mm
(0.79 in)

Rotational speed

Max.: 5,000 rpm
(31,415.9265 rad.min-1)

Min.: 100 rpm
(628.3185 rad.min-1)

Description

The Internal Freewheels of the FXN series transmits torque via press fit on the outer ring, allowing compact installation, ideal in confined areas. These units are sprag freewheels equipped with sprag lift-off X and no bearing support. The sprag lift-off X servers to enable freewheeling operation without wear, when the inner ring rotates at high speed. They are often used as backstops and overrunning clutches in applications that require high speed freewheel­ing operation or low speed driving operation, when used as an overrunning clutch. These units feature bores of up to 130 mm with nominal torque of up to 20 500 Nm. Additionally, a wide selection of standard bores is available.

Catalogs

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Exhibitions

Meet this supplier at the following exhibition(s):

SPS 2026
SPS 2026

24-26 Nov 2026 Nuremberg (Germany) Hall 3 - Stand 419

  • More information

    Other SIAM 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.