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  3. Sprag one-way clutch
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Sprag one-way clutch BM series
with internal bearingsfull-facebackstop

Sprag one-way clutch - BM series - RINGSPANN - with internal bearings / full-face / backstop
Sprag one-way clutch - BM series - RINGSPANN - with internal bearings / full-face / backstop
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Characteristics

Technology
sprag
Construction
with internal bearings, full-face
Applications
backstop
Torque

Min.: 150 Nm
(110.634322 ft.lb)

Max.: 57,500 Nm
(42,409.823583 ft.lb)

Diameter

Min.: 15 mm
(0.59 in)

Max.: 150 mm
(5.91 in)

Rotational speed

Min.: 250 rad.min-1
(39.7887 rpm)

Max.: 3,500 rad.min-1
(557.0423 rpm)

Description

Complete Freewheels BM are sealed freewheels with ball bearings. They are supplied oil-filled and ready for installation, on customer request with biodegradable oil.

Besides the standard type, the type with sprag lift-off X is available for wear-free freewheeling operation at high speed rotating inner ring.

Nominal torques up to 57 500 Nm.

Bores up to 150 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):

EXPOSIBRAM
EXPOSIBRAM

24-27 Aug 2026 Belo Horizonte (Brazil)

  • More information
    Electra Mining Africa
    Electra Mining Africa

    7-11 Sep 2026 Johannesburg (South Africa)

  • 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.