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Download complete set of Spec. Sheets!

Download complete set of Spec. Sheets!

Superior Interlock Corporation - Key Interlocks System Manufacturer

Type B-857
Superior Compartment Access Interlock Unit
Single Key

Printable Technical Specifications

Type B-857 Superior Compartment Door Interlocks are manufactured in a number of different types for the Interlocking of compartment or cell doors, gates, access hatches, manways, access doors, safety fences, etc. This prevents access to enclosures, hazardous machinery, high voltage areas, automatic robotic equipment, high or low temperature areas, chemically hazardous vessels, dangerous gangways, compartments or other restricted areas, etc. until a key, signifying that entry is safe, is inserted in the Interlock.

An essential feature of all Superior compartment door Interlocks is the key retaining feature which prevents the removal of the key from the Interlock until the doors are returned to the closed position. The removal of the key locks the door closed. The key, when removed, gives evidence that the compartment door is locked closed.

In Superior Compartment Door Interlocks, the key retaining function is accomplished by means of a set of tumblers built into the interlock, which require that a prong shaped device known as a bolt eye, be introduced into the slots of the Interlock unit. Upon removal of the key from the Interlock the bolt eye is securely locked in the Interlock.

In the usual installation, the Interlock is mounted on the door and the bolt eye is mounted on the doorframe or jam. For some applications this can be reversed. When the Interlock is mounted this way, and the key of the Interlock is removed, the door is positively locked closed.

The most commonly used B-857 compartment door Interlock is the End Mounted type. This unit with our Bolt Eye Chain adapts to many industrial applications including those where poor alignment of door and frame exist. Flush and Sub mounting options are available. Please contact our factory for details or application recommendations.

The Superior type B-857 access interlock is available in our standard alloy die-cast or with the lock cylinder totally protected by 300 series Stainless Steel for harsh and high temperature applications such as precipitators, baghouses, scrubbers, petrol-chemical facilities, food process and packaging facilities, robotic welding and assembly, etc. Please see our cut sheet for specifications or contact our factory for details or recommendations.

Type B-857

Shown above, is the Superior Stainless Steel, Type B-857, end mounting door interlock. The stainless steel interlock has a chain type bolt eye; plated lock cylinder with a stainless steel dust cover (weldable mounting plate available). The door lock is for use in harsh environments found in electrostatic precipitators and chemical plants.

More Info on Products:
Key B-1088 Key B-3003 Key B-4003 Key B-5003 Key B-6003 Key B-7003
Key B-8003 Key B-857 Key B-1496 Key B-986 Key B-1088-2T

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Phone: (718) 821-8949