Free Wheels US

Free Wheels US

Free Wheels US

Product catalog summary
Specifications:
The US Series freewheels are not self-centering, requiring one or two bearings to be placed next to the freewheel for proper alignment of the outer and inner races. They incorporate ball bearings with dimensions similar to the 62 Series. Torque is transmitted from the shaft to the inner race via a key and from the outer race to the seating through an interference fit with J6 tolerance.

Procedures:
Before use, the freewheels must be lubricated with appropriate lubricants as per instructions on page 45. Oil lubrication is necessary for high-speed operations in neutral.

Standards and Tolerances:
Shaft tolerances should be h6 or j7, while seating tolerances should be H7 or J6. Keyways for models US 8-12 and US 15-60 follow DIN 6885 standards.

Technical Data:
The document provides a detailed table listing various models (US8 to US60) with specifications such as dimensions (d, H7, Dr6, L, D, S), weight, maximum rotational speeds for inner and outer races, and resistance torque (TN).

Recommendations:
Ensure proper lubrication and adherence to specified tolerances for optimal performance. The maximum torque (TMAX) is twice the resistance torque (TN).
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Catalog excerpts

Free Wheels US-1

Modell  |  Type US Die Freiläufe der Serie US sind nicht selbstzentriert. Deshalb ist es erforderlich, ein oder zwei Lager neben dem Freilauf zu platzieren, sodass der Außenring zentriert zum Innenring rotieren kann. The US Series freewheels are not self-centring. It is therefore required to place one or two bearings next to the freewheel so that the outer race can rotate centrally to the inner race. US-Freiläufe haben Kugellager in denselben Abmaßen wie die Serie 62. US freewheels have ball bearings with the same dimensions as the 62.. Series. Die Drehmomente werden von der Welle auf den Innenring mittels einer Passfeder und vom Außenring auf das Gehäuse durch die erzeugte Interferenz von der Ab­ eichung [Toleranz] J6 des Außendurchmessers w übertragen. The torque forces are transmitted from the shaft to the inner race by means of a key and from the outer race to the seating by means of an interference fit on the J6 tolerance of the external diameter. Die Toleranzen der Welle müssen entweder h6 oder j7 sein; die Toleranzen für das Gehäuse entweder H7 oder J6. Vor Inbetriebnahme muss der Freilauf mit Schmiermitteln gemäß den Anweisungen auf Seite 45 geschmiert werden. Ölschmierung ist erforderlich, wenn eine hohe Anzahl an Umdrehungen im Leerlauf erreicht wird. Shaft tolerance must be either h6 or j7; the tolerances for the seating must be either H7 or J6. Before being put onto service, the freewheels must be lubricated with suitable lubricants following the instructions given on page 45. Oil lubrication is essential when a high number of rotations in neutral is reached. Ausgabe 2011   |   Druckfehler, Maß- und Konstruktionsänderungen vorbehalten.

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Free Wheels US-2

Montagebeispiel Mounting example Masse Weight nmax Drehzahl Innenring Inner race nmax Drehzahl Außenring Outer race Modell Type Anmerkung TMAX = 2 x TN Passfedernut US 8-12 DIN 6885 Seite 1 Passfedernut US 15-60 DIN 6885 Seite 3 Druckfehler, Maß- und Konstruktionsänderungen vorbehalten.   |   Ausgabe 2011 Leerlaufdrehmoment Resistance torque Notes TMAX = 2 x TN Keyway US 8-12 DIN 6885 page 1 Keyway US 15-60 DIN 6885 page 3

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