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Freewheels and Backstops

Our freewheels enable precise torque transmission in one direction and decouple movements in the opposite direction. They are used in drive systems, conveyor technology and mechanical engineering. Available in various designs for individual requirements.

Sprag type freewheels

Backstops

Overrunning Clutches
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2 From 3
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ts_bseu
EAN 4061408035182 Backstop clutch Ø 25 BSEU40-25 TSUBAKI
from 355,79 €
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ts_mdeu
EAN 4061408035250 Overrunning cam clutch MDEU 30, 30 x 90 x 50 mm, TSUBAKI
from 287,28 €
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ts_bseu
EAN 4061408035700 Backstop clutch Ø 45 BSEU70-45 TSUBAKI
from 521,57 €
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ts_mdeu
EAN 4061408036455 Overrunning cam clutch MDEU 15, 15 x 55 x 39 mm, TSUBAKI
from 177,91 €
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ts_mdeu
EAN 4061408036462 Overrunning cam clutch MDEU 25, 25 x 80 x 42 mm, TSUBAKI
from 242,66 €
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ts_mdeu
EAN 4061408036479 Overrunning cam clutch MDEU 35, 35 x 100 x 50 mm, TSUBAKI
from 351,16 €
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ts_mdeu
EAN 4061408036486 Overrunning cam clutch MDEU 40, 40 x 110 x 50 mm, TSUBAKI
from 393,30 €
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ts_mdeu
EAN 4061408036493 Overrunning cam clutch MDEU 45, 45 x 120 x 50 mm, TSUBAKI
from 445,99 €
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ts_mdeu
EAN 4061408036509 Overrunning cam clutch MDEU 55, 55 x 140 x 60 mm, TSUBAKI
from 777,54 €
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ts_mdeu
EAN 4061408036516 Overrunning cam clutch MDEU 60, 60 x 150 x 60 mm, TSUBAKI
from 989,57 €
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ts_mdeu
EAN 4061408036523 Overrunning cam clutch MDEU 70, 70 x 170 x 60 mm, TSUBAKI
from 1320,56 €
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ts_mdeu
EAN 4061408036530 Overrunning cam clutch MDEU 80, 80 x 190 x 60 mm, TSUBAKI
from 2264,54 €
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ts_tss
EAN 4061408037070 Clamp body freewheel unit Ø 8 X Ø 24 TSS 08 TSUBAKI
from 79,77 €
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ts_bseu
EAN 4061408041268 Backstop clutch Ø 40 BSEU40-40 TSUBAKI
from 355,79 €
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ts_tss
EAN 4061408042425 Clamp body freewheel unit Ø 45 X Ø 85 TSS 45 TSUBAKI
from 201,59 €
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ts_tss
EAN 4061408042432 Clamp body freewheel unit Ø 60 X Ø 110 TSS 60 TSUBAKI
from 301,16 €
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ts_tfs
EAN 4061408042449 Clamp body freewheel unit Ø 45 X Ø 100 TFS45 TSUBAKI
from 306,61 €
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ts_tfs
EAN 4061408042456 Clamp body freewheel unit Ø 60 X Ø 130 TFS60 TSUBAKI
from 510,11 €
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ts_mzeu_12k_150k
EAN 4061408045464 TSUBAKI Cam Clutch MZEU 25-K, 25 x 90 x 60 mm
from 327,28 €
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ts_mzeu_12k_150k
EAN 4061408045471 TSUBAKI Cam Clutch MZEU 30-K, 30 x 100 x 68 mm
from 384,29 €
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ts_mzeu_12k_150k
EAN 4061408051922 TSUBAKI Cam Clutch MZEU 12-K, 12 x 62 x 42 mm
from 264,97 €
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ts_mzeu_12k_150k
EAN 4061408051939 TSUBAKI Cam Clutch MZEU 15-K, 15 x 68 x 52 mm
from 267,47 €
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ts_mzeu_12k_150k
EAN 4061408051946 TSUBAKI Cam Clutch MZEU 20-K, 20 x 75 x 57 mm
from 285,11 €
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ts_mzeu_12k_150k
EAN 4061408051960 TSUBAKI Cam Clutch MZEU 40-K, 40 x 125 x 86 mm
from 592,58 €
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ts_mzeu_12k_150k
EAN 4061408051977 TSUBAKI Cam Clutch MZEU 45-K, 45 x 130 x 86 mm
from 667,25 €
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ts_mzeu_12k_150k
EAN 4061408051984 TSUBAKI Cam Clutch MZEU 50-K, 50 x 150 x 94 mm
from 917,67 €
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ts_mzeu_12k_150k
EAN 4061408052004 TSUBAKI Cam Clutch MZEU 55-K, 55 x 160 x 104 mm
from 1082,53 €
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ts_mzeu_12k_150k
EAN 4061408052011 TSUBAKI Cam Clutch MZEU 60-K, 60 x 170 x 114 mm
from 1239,99 €
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ts_mzeu_12k_150k
EAN 4061408052028 TSUBAKI Cam Clutch MZEU 70-K, 70 x 190 x 134 mm
from 1663,63 €
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ts_mzeu_12k_150k
EAN 4061408052042 TSUBAKI Cam Clutch MZEU 90-K, 90 x 230 x 158 mm
from 4428,70 €
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ts_mzeu_12k_150k
EAN 4061408052066 TSUBAKI Cam Clutch MZEU130-K, 130 x 310 x 212 mm
from 9299,02 €
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ts_mzeu_12k_150k
EAN 4061408052073 TSUBAKI Cam Clutch MZEU150-K, 150 x 40 x 246 mm
from 14050,97 €
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ts_breu_30_150
EAN 4061408052141 Lift off cam clutch BREU 30-K, 30 x 100 x 76 mm, TSUBAKI
from 845,77 €
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ts_breu_30_150
EAN 4061408053599 Lift off cam clutch BREU 35-K, 35 x 110 x 79 mm, TSUBAKI
from 929,44 €
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ts_breu_30_150
EAN 4061408053605 Lift off cam clutch BREU 40-K, 40 x 125 x 86 mm, TSUBAKI
from 1031,71 €
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ts_breu_30_150
EAN 4061408053612 Lift off cam clutch BREU 45-K, 45 x 130 x 86 mm, TSUBAKI
from 1162,79 €
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ts_tfs
EAN 4061408054336 Clamp body freewheel unit Ø 12 X Ø 35 TFS12 TSUBAKI
from 86,57 €
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ts_tfs
EAN 4061408054343 Clamp body freewheel unit Ø 15 X Ø 42 TFS15 TSUBAKI
from 94,70 €
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ts_tfs
EAN 4061408054350 Clamp body freewheel unit Ø 25 X Ø 62 TFS25 TSUBAKI
from 141,39 €
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ts_tfs
EAN 4061408054367 Clamp body freewheel unit Ø 17 X Ø 47 TFS17 TSUBAKI
from 105,30 €
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ts_tfs
EAN 4061408054374 Clamp body freewheel unit Ø 30 X Ø 72 TFS30 TSUBAKI
from 161,73 €
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ts_tfs
EAN 4061408054381 Clamp body freewheel unit Ø 40 X Ø 90 TFS40 TSUBAKI
from 249,08 €
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ts_tfs
EAN 4061408054398 Clamp body freewheel unit Ø 50 X Ø 110 TFS50 TSUBAKI
from 336,47 €
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ts_tfs
EAN 4061408054404 Clamp body freewheel unit Ø 70 X Ø 150 TFS70 TSUBAKI
from 883,36 €
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ts_bseu
EAN 4061408054831 Backstop clutch Ø 20 BSEU40-25 TSUBAKI
from 355,79 €
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ts_tss
EAN 4061408069118 Clamp body freewheel unit Ø 30 X Ø 62 TSS 30 TSUBAKI
from 124,05 €
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ts_tss
EAN 4061408069125 Clamp body freewheel unit Ø 35 X Ø 72 TSS 35 TSUBAKI
from 148,15 €
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ts_tss
EAN 4061408069132 Clamp body freewheel unit Ø 40 X Ø 80 TSS 40 TSUBAKI
from 154,94 €
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2 From 3

Freewheels - What is it actually?

In mechanics, freewheels are couplings which act in only one direction of rotation. Freewheel couplings can transmit torques in only one direction of rotation. If the direction of rotation is reversed, freewheel clutches automatically release the connection. The same happens if the speed of the component to be driven is greater than the speed of the driving component. In this case, too, the freewheel disengages the connection and thus interrupts the transmission of the torque. MOVET offers the right overrunning clutch for every application.

What is a freewheel used for?

A freewheel is always required when a drive train is to be interrupted at a specific point in order to cause a drive torque to be transmitted in only one direction of rotation. A freewheel is also used when a predefined minimum speed must be maintained. Since freewheeling clutches are also used when specific increases in output shaft speed are desired over constant input speeds, freewheeling clutches are also referred to as "overrunning clutches." The overrunning clutch fulfills an elementary protective function for drive units by protecting them from impermissibly increased speeds and expensive mechanical damage.

Where are overrunning clutches used?

Known applications for freewheel clutches are found in the starter of internal combustion engines (starter freewheel) in combination with pulleys on alternators. Freewheel hubs are used in vehicles with engageable all-wheel drive. Freewheel clutches are also found on bicycles, namely as so-called torpedo freewheel hubs, which prevent the bicycle pedals from spinning permanently. Freewheel clutches are not only indispensable in automotive engineering. Whether in turnstiles or revolving doors, in the paper feed of copiers or in model making: Freewheel clutches can be found in many areas of our daily life. MOVET overrunning clutches are primarily used as backstops in conveyor systems, as speed compensation in transport systems or as overrunning clutches in packaging machines.

Which freewheel fits higher torques to be transmitted?

Depending on the size of the torque to be transmitted and the application, different freewheel designs are used. The most common types include sprag freewheels, centrifugal lift-off freewheels and backstops. In sprag freewheels, an outer ring and an inner ring surround a series of sprags. Sprag freewheels are geometrically designed so that they are minimally longer in the upright orientation than the distance between the inner and outer rings. As a result, the sprags are slightly tilted in the freewheeling direction. Normally, the inner ring does not follow the rotation of the outer ring. However, if the direction of rotation is changed, all sprags on the inner and outer ring will line up. This creates a clamping effect. This freewheel design is used for higher torques to be transmitted.

Which freewheel suits tasks where speed is the focus?

The so-called centrifugal lift-off freewheel designs are a special form of the sprag design. In centrifugal lift-off clutches, the sprags are shaped in such a way that they are inclined by the centrifugal force of rotation. This means that they no longer rest against the friction surfaces, which reliably prevents excessive wear. When the speed decreases again or the drive comes to a standstill, the sprags again contact the friction surface, thus enabling renewed power transmission.

Which freewheel fits if reverse running is to be prevented?

Backstops are used to reliably prevent the system from running backwards when a drive is switched off. Backstops are used, among other things, on conveyor belts and elevators in the bulk materials sector. Backstops are ideally suited when comparatively slow-running drives are to be protected. In the case of backstops, the backdriving torque generated when the drive is switched off is supported by a lever arm mounted on the outer housing of the backstop.

Is it possible to change the bearing of a freewheel?

Freilauf-Kupplungen, die einem erhöhten Verschleiß ausgesetzt sind, verfügen häufig über die Option eines Lagerwechsels. MOVET unterstützt seine Kunden durch ein umfangreiches Angebot an Freilauf Kugellagern für die angebotenen Freilauf-Kupplungen. Wenn Sie bei einem Freilauf das Lager wechseln wollen, sprechen Sie vor dem Austausch am besten mit den MOVET Experten. Gerne suchen wir gemeinsam mit Ihnen das optimale Freilauf Kugellager für Ihren Bedarf. Wir freuen uns auf Ihre Anfrage!

Buy a freewheel: Of course at MOVET!

If you want to buy a freewheel, you are in the right place at MOVET! We offer a wide selection of sprag freewheels, backstops and overrunning clutches. Our product filter makes it especially easy for you to buy the right freewheel coupling! Simply enter the required torque, bearing type and shaft diameter - and you will immediately receive a pre-sorted selection of our product portfolio. If you are looking for an overrunning clutch that is not listed on our website: No problem! We will be happy to work with you to determine the exact requirements for your project and find the optimum overrunning clutch for you. We would also be happy to advise you on the other products in our range. Just give us a call!
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