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BC series

Product catalog summary

Overview: The document provides technical specifications and application guidelines for Complete Freewheels BC with lever arm, used primarily as backstops in mechanical systems. These components are designed to prevent reverse rotation and are equipped with ball bearings, sealed, and oil-filled for immediate installation.

Specifications:

Nominal torques up to 57,500 Nm.
Bore diameters up to 150 mm with various standardized sizes available for quick delivery.
Two types available: standard and sprag lift-off X for wear-free operation at high speeds.

Application Example: The BC 90 R model is used as a backstop on a transport roller. The backdriving torque is supported by a lever arm with a holding pin. Removing the pin allows the shaft to rotate in both directions.

Mounting Instructions:

The holding pin should engage with a slot or bore in the machine frame, allowing 0.5 to 2 mm play axially and radially.
Shaft tolerance must be ISO h6 or j6.
Freewheels are supplied ready for installation.

Ordering Information: When ordering, specify the freewheel size, bore diameter, and the freewheeling direction of the inner ring (clockwise or counterclockwise).

Performance and Dimensions:

Maximum transmissible torque is twice the nominal torque.
Keyway specifications follow DIN 6885 standards.
Detailed dimensions and weights are provided for various sizes.

Key Features:

Freewheels with sprag lift-off X offer extended service life at high speeds.
Highlighted bore diameters in the table indicate availability for short delivery times.

Catalog excerpts

Application as Backstop Features Complete Freewheels BC with lever arm are sealed freewheels with ball bearings. Freewheels BC are supplied oil-filled and ready for installation. They are arranged on through shafts or shaft ends. 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 BC 90 R as a backstop on the end of a transport roller. The backdriving torque is supported by the lever arm with holding pin on the base. If the holding pin is removed, the shaft can be turned in both directions.

Open the catalog to page 1

Complete Freewheels Upper half: Standard typeLower half: Type with sprag lift-off X 35-2 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. The freewheels BC are supplied oil-filled and ready for installation. Mounting The backdriving torque is supported by the lever arm...

Open the catalog to page 2

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