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A. It is a roller set for R60 and R110 thread reform tools, configured for 28 threads per inch unified threads.
A. It is used to restore UNC, UNF or UNEF external threads with 28 tpi on shafts and fasteners commonly found in many machines.
A. The rollers are fitted into the R60 or R110 tool head according to the pitch chart for 28 tpi unified threads.
A. Unified threads have defined angles and spacing for each pitch, so rollers must match exactly to reshape the thread correctly.
A. The roller set is supplied in a compact pack around 50 x 50 x 50 mm in size.
A. It can be used wherever the external thread form and 28 tpi pitch match the roller design and tool capability.
A. They should measure with a thread gauge marked in tpi and confirm that the reading is 28 tpi.
A. They allow non-cutting restoration of threads, helping to preserve original dimensions and strength of components.
A. Clean the rollers, lightly oil them to prevent corrosion and store them in their labelled container with other unified sets.
A. Yes, it can be used wherever R60 or R110 reform tools are taken for maintenance work."
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