Product Description

Overview
Prevent reverse rotation when inclined belt conveyor is parking with load.

Type DSN Backstop Feature
Easy Installation
Backstop axial structure is symmetrical. The device can be installed freely according to rotation direction. Backstop and torque arm are detachable design. They are connected by cylindrical bolts.

Reliable Lubrication

● Unique sealing design.
● Using oil seal and dust ring to seal. Oil seal can effectively avoid internal oil leakage. Dust ring can prevent outside dust from contacting oil seal. In this way, oil seal service life is lengthened. 
● Thorough system design.
● Inner cam can rotate freely with shaft. Contact-sealed splash circulation can lubricate and protect workpiece and minimize wear and tear.
● Multiple oil drain plug can ensure the installation of backstop be mounted at any desired angle.
● Filtered breather, oil sight gauge and purgeable grease-cavities provide a complete self lubricating system, which shortens maintenance time.

longer Service Life
Unique design of cylindrical rollers and wedge action weaken the backstopping contact stress, which increases life.

 

Torque Arm Stirrup Design

Stirrup is used to locate torque arm. It must have enough resistance to shear strength (pressure). When user selected arm length is different, the withstood Toque Arm Reaction Force also changes.

The pin hole on the stirrup must be long and be installed at the same direction of torque arm, to relieve backstop outer race from undue parallel forces.
When backstopping, the pin on the stirrup has no force effected. Its function at this time is to prevent reverse rotation at normal runtime.
Common Arrangement of Backstop and Stirrup 
Stirrup is used to locate torque arm. It must have enough resistance to shear strength (pressure). When user selected arm length is different, the withstood Toque Arm Reaction Force also changes.

The pin hole on the stirrup must be long and be installed at the same direction of torque arm, to relieve backstop outer race from undue parallel forces.
When backstopping, the pin on the stirrup has no force effected. Its function at this time is to prevent reverse rotation at normal runtime.