Mark/B-LOC: Aside from improper installation, the most common oversight we see is a failure to accurately quantify applied dynamic loads or, when this is not possible, to base selections on an appropriate safety factor. Before selecting a device, consider all types of loading acting on system components and either determine their peak values or apply a safety factor that is right for the job.Jeff/KTR: The majority AirroolChisels of problems we''ve seen stem from improper selection. The dimensional tolerance of the hub and shaft must be correct to effectively maintain peak torque transmission of the clamping elements. It''s also important that the hub material be thick enough to prevent breakage when the elements are installed.Keith/U.S. Tsubaki: Hub dimensions that don''t match the manufacturer''s requirements can reduce holding power and lead to potential problems. Tightening the unit''s locking bolts by "feel" or with crude air tools may create an unpredictable torque capacity.

Mark/B-LOC: Aside from improper installation, the most common oversight we see is a failure to accurately quantify applied dynamic loads or, when this is not possible, to base selections on an appropriate safety factor. Before selecting a device, consider all types of loading acting on system components and either determine their peak values or apply a safety factor that is right for the job.Jeff/KTR: The majority AirroolChisels of problems we''ve seen stem from improper selection. The dimensional tolerance of the hub and shaft must be correct to effectively maintain peak torque transmission of the clamping elements. It''s also important that the hub material be thick enough to prevent breakage when the elements are installed.Keith/U.S. Tsubaki: Hub dimensions that don''t match the manufacturer''s requirements can reduce holding power and lead to potential problems. Tightening the unit''s locking bolts by "feel" or with crude air tools may create an unpredictable torque capacity.

Warren/Fenner: Failure to take into consideration the compression forces and outward forces generated when using locking devices. The mounted component must have sufficient wall thickness to withstand the outward forces or it will burst. Likewise when AirroolChisels mounting on hollow-shaft or tubular applications. Inadequate wall thickness results in the hollow shaft or tube being compressed and distorted. Many manufacturers publish a formula or table that lets designers calculate the required wall thickness.Vic/Rimtec: Having too much clearance between the shaft and hub is often a problem; you can''t clamp enough to transmit rated torque. Overtightening the screws is also common, causing tapers to lock when they''re supposed to disassemble. This is where locking devices with push-off screws come in handy.