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FRHN

Product catalog summary

Application Example: The document describes the application of the Backstop FRHN 1 200 on the head drum shaft of an inclined conveyor belt system. The lever arm is bolted to the freewheel, and the backdriving torque is supported by the lever arm on the base plate. During maintenance, the drum shaft can be turned in both directions by removing the bolts when the conveyor belt is unloaded.

Mounting Instructions: The backdriving torque is supported by the lever arm, which must not be clamped into position. It requires a 12.7 mm play in both axial and radial directions. The shaft tolerance must be ISO h6 or j6.

Ordering Example: For a Freewheel size FRHN 1 200 with a 230 mm bore, the order should specify: FRHN 1 200, d = 230 mm.

Product Features: Low Speed Backstops FRHN with lever arm are sealed sprag freewheels with ball bearings, supplied oil-filled and ready for installation. They are suitable for installations with low speeds, such as inclined conveyor belts, elevators, or pumps. Taconite seals protect against dust and dirt contamination. Nominal torques reach up to 503,550 Nm, with bores up to 320 mm.

Technical Specifications: The document provides a table with dimensions and specifications for different bore sizes (230 mm, 280 mm, 320 mm) and corresponding weights, nominal torques, and maximum speeds. The maximum transmissible torque is twice the specified nominal torque. Keyway dimensions are available upon customer request.

Catalog excerpts

Low Speed Backstops FRHN with lever arm in metric dimensions with sprags Application as ➧ Backstop for installations with low speeds. The freewheels are designed for the use in inclined conveyorbelts, elevators or pumps. Taconite seals protect the freewheels from contamination with dust or dirt. Low Speed Backstops FRHN with lever arm are sealed sprag freewheels with ball bearings. They are supplied oil-filled and ready for installation. The Low Speed Backstops FRHN are arranged on through shafts or shaft ends. Nominal torques up to 503 550 Nm. Bores up to 320 mm Application example Motor Backstop FRHN 1 200 on the head drum shaft of an inclined conveyor belt system. The lever arm is bolted to the freewheel. The backdriving torque is supported by the lever arm on the base plate. When the conveyor belt is without any load, the drum shaft can be turned in both directions during maintenance by removing the bolts. Reduction gear Head pulley Conveyor Belt Mounting The backdriving torque is supported by the lever arm.The lever arm must not be clamped into position. It must have 12,7 mm play in the axial and in the radial direction. The tolerance oft the shaft must be ISO h6 or j6. Example for ordering Freewheel size FRHN 1 200 with a 230 mm bore: • FRHN 1 200, d = 230 mm

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The maximum transmissible torque is 2 times the specified nominal torque.See page 14 catalogue„Freewheels" for determination of selection torque. Keyway dimensions upon request by customers.

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*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.

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