Overview: The document provides technical specifications for UTL UN Type B couplings, which are torsionally flexible, maintenance-free, and vibration-damping. These couplings are made of cast iron GG 25 and feature an axial plug-in, fail-safe design.
Material and Construction: The couplings are constructed from cast iron (DIN 1693 GG 25) with a nitrile rubber cushion (ASTM D2000 BG 810) rated at 80° Shore A hardness. They are designed to accommodate a range of sizes from 58 to 250.
Specifications: The couplings are finished with a bore according to ISO fit and a feather keyway according to DIN 6885 sheet 1 - JS9 and P9. The permissible temperature range for ambient air and machine shaft ends is between -30°C and +80°C.
Size and Torque: Sizes range from 58 to 250, with nominal torque values from 57 Nm to 8400 Nm and maximum torque values up to 5000 Nm for smaller sizes, decreasing to 2750 Nm for the largest size.
Dimensions: The document lists detailed dimensions for each size, including pilot bore, maximum bore, and various diameter and length measurements (ØD, ØD1, ØD2, L, L1, L2, L3, L4).
Additional Information: For specific temperature ranges of elastomers, further details are provided on page 34 under coupling selection.
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