FSB ASL®
Standard Bearing

The standard version covers door thicknesses from 39 to 58 mm, with versions available for 29 to 98 mm upon request. Its robust M5 stainless steel through-fixing, ergonomic operating angle, and non-handedhands-free positive mechanism are certified to DIN EN 1906, user class 4—the highest performance category for commercial-grade hardware.

At the core of this innovation lies our intelligent adapter system:

• Separate installation of the substructure without the lever handle—no obstruction from the handle neck

• Substructure reinforced with stainless steel and glass-fiber-reinforced plastic

• Precise attachment of the cover rose via proven FSB clip system

The DIN EN 1906 Type A positive mechanism operates in both directions and offers several key advantages:

• Universally suitable for both left- and right-handed installation

• High-performance return springs support the latch spring

• Effectively prevents sagging of heavy door handles

• Enables easy conversion on-site to lever/knob handle sets

• Flexible adjustment for changing door thicknesses

The FSB ASL® bearing offers impressive versatility:

• Round or rectangular rose sets

• Short-plate and long-plate sets with all standard keyways

• Convenient “all-in-one” packaging per set

• Available in aluminum, stainless steel, and bronze

FSB ASL® combines intelligent engineering with practical flexibility—a well-conceived system trusted by both planners and installers.