Ruland Manufacturing Co., Inc. has been a precision manufacturer since 1937. Over the years Ruland has made a variety of products including spring rings for the .50 caliber machine gun, clamp style shaft collars for guidance instruments and bombsights during World War II, and the valve that pressurized the spacesuit of the first American to walk in space. For the past 40 years Ruland Manufacturing’s focus has been on high performance shaft collars and couplings. Ruland’s complete line of products include shaft collars, rigid couplings, and a variety of zero backlash motion control couplings: beam couplings, Oldham couplings, curved jaw couplings, bellows couplings, and disc couplings.