Mounting adapter ring Massa SB543 for reverse fit 55mm to 55mm

Massa SB543 is a mounting adapter ring designed for reverse (inverted) fitting between 55 mm components. The adapter provides a metal mechanical interface that lets photographers and optical technicians connect filters, lenses, and accessories requiring a 55 mm to 55 mm reverse mount. It maintains the optical spacing of the connected parts while offering a secure, standardized threaded connection suitable for photographic and optical setups where a reversed mounting orientation is needed.

Advantages

The metal construction offers durability and dimensional stability during repeated mounting and removal. The SB543 preserves original optical alignment by providing a direct mechanical interface without introducing additional optical elements or changing focal distances. Its standardized 55 mm threaded interface enables compatibility with a wide range of 55 mm filters and accessories designed for reverse mounting. The compact, low-profile design minimizes added bulk and keeps the combined assembly close to the optical axis.

Suitable for

• Attaching 55 mm filters or adapter rings in reverse (inverted) orientation
• Connecting lenses or extension components that require a 55 mm mechanical interface
• Optical setups where maintaining original flange focal distance is critical
• Temporary or permanent mechanical joins in photographic rigs or laboratory optical benches

Key specifications

• Thread interface: 55 mm to 55 mm reverse mount
• Material: metal construction for rigidity and wear resistance
• Compatibility: designed for components with 55 mm external/internal thread dimensions
• Form factor: low-profile adapter ring suitable for close-coupled assemblies

How to use

To use the Massa SB543, align the adapter threads with the corresponding 55 mm thread on the filter, lens, or accessory to be mounted in reverse. Carefully engage the threads by hand to avoid cross-threading and tighten until the connection is snug; avoid overtightening to prevent damage to the threads or connected components. When mounting a lens in reverse, ensure secure support for the lens body to prevent stress on the mount. Disassemble by reversing the procedure, supporting both parts while unthreading.

Usage recommendations

Inspect mating threads for debris or damage before attaching. Use the adapter in controlled environments to reduce the risk of contaminating optical surfaces. If extended use or heavy loads are expected, support the combined assembly to avoid strain on the adapter threads and connected optics.