*mydirectindustry

BA series

Product catalog summary

Overview: The document provides technical specifications and application guidelines for Complete Freewheels BA with lever arm, used primarily as backstops in mechanical systems. These components are designed to prevent reverse rotation and are equipped with either rollers or sprag lift-off mechanisms for wear-free operation at high speeds.

Specifications:

Nominal torques up to 57,500 Nm.
Bore sizes up to 150 mm with various standardized diameters available for quick delivery.
Sealed freewheels with ball bearings and an end cover, fitted to shaft ends.
Oil filling required post-installation.

Features:

Standard type for universal use and type with sprag lift-off X for extended service life at high-speed operations.
Sprag lift-off X type operates without contact, reducing wear.

Mounting Instructions:

The backdriving torque is supported by a lever arm with a holding pin, which must have 0.5 to 2 mm play in axial and radial directions.
The shaft tolerance must be ISO h6 or j6.
The inner ring must be axially secured with a retainer plate.
Oil of specified quality must be filled before commissioning.

Ordering Information:

Specify freewheel size, type (standard or sprag lift-off X), bore diameter, and freewheeling direction (clockwise or counterclockwise).
Highlighted bore diameters in the table indicate availability for short delivery times.

Performance Data:

Maximum transmissible torque is twice the nominal torque.
Keyway specifications follow DIN 6885 standards.

Application Example:

Illustrates the use of a Complete Freewheel BA 45 SX as a backstop in a spur gearbox, highlighting the role of the holding pin and lever arm in supporting backdriving torque.

Catalog excerpts

Complete Freewheels BA with lever arm with rollers or with sprag lift-off X Application as ➧ Backstop Complete Freewheels BA with lever arm are sealed freewheels with ball bearings. The freewheels BA have an end cover and are fitted to shaft ends. The oil filling is carried out after the freewheel has been fitted to the end of the shaft. Besides the standard type, the type with sprag lift-off X is available for wearfree 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 example Complete Freewheel BA 45 SX as a backstop, arranged at the end of the intermediate shaft of a spur gearbox. The backdriving torque is supported by the lever arm with holding pin on the gearbox housing. If the holding pin is removed, the shaft can be turned in both directions. With the high shaft speed in normal operation (freewheeling operation), the type with sprag lift-off X is used; the sprags work in freewheeling operation without contact and hence are wear-free.

Open the catalog to page 1

Complete Freewheels 33-2 Standard type For universal use ■ Freewheels with bore diameters highlighted blue in the table are available with short delivery times. The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque. Keyway according to DIN 6885, page 1 • Tolerance of keyway width JS10. The tolerance of the shaft must be ISO h6 or j6. For freewheels BA, the inner ring must be secured axially with the supplied retainer plate. Prior to commissioning, the freewheel must be filled with oil of the specified quality. Mounting The...

Open the catalog to page 2

All RINGSPANN catalogs and technical brochures

Archived catalogs

*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.

Brand list