Model SB1224 | I N S T R U C T I O N S | Mfg. Since 1/11 |
Chuck Safety
Trained Operators Only. Using a chuck incorrectly can result in workpieces coming loose at high speeds and striking the operator or bystanders with deadly force. To reduce the risk of this hazard, read and understand this document and seek additional training from an experienced chuck user before using this chuck.
Using Correct Equipment. Many workpieces can only be safely turned in a lathe if additional support equipment, such as a tailstock or steady rest, is used. If the operation is too hazardous to be completed with the lathe or existing equipment, the operator must have enough experience to know when to use a different machine or find a safer way.
Disconnect Power. Serious entanglement or impact injuries could occur if the lathe is started while you are adjusting, servicing, or installing the chuck. Always disconnect the lathe from power before performing these procedures.
Handling Chucks. Chucks are heavy and awkward to hold, especially if they are oily. A dropped chuck can result in amputation or crushing injuries and equipment damage. Always use some kind of chuck cradle, protective device, or lifting assistance when installing and removing chucks.
Chuck Key Safety. A chuck key left in the chuck can become a dangerous projectile when the lathe is started. Always remove the chuck key after using it. Develop a habit of not taking your hand off of a chuck key unless it is removed from the chuck.
Proper Maintenance. All chucks must be properly maintained and lubricated to achieve maximum clamping force and withstand the rigors of centrifugal force. To reduce the risk of a thrown workpiece, follow all maintenance intervals and instructions in this document.
Speed Rates. Fast spindle speeds increase the centrifugal force on the chuck and workpiece. Excessive centrifugal force can cause the chuck to lose its grip and throw a workpiece, or cause a chuck to break apart with deadly consequences. Use slow spindle speeds when ever possible, take all safety precautions, and double check the workpiece for proper clamping and support before starting the lathe.
Chuck Capacity. Avoid exceeding the capacity of the chuck by clamping an oversized workpiece. If the workpiece is too large to safely clamp with the chuck, use a faceplate or a larger chuck if possible. Otherwise, the workpiece could
be thrown from the lathe during operation, resulting in serious impact injury or death.
Clamping Force. Inadequate clamping force can lead to the workpiece being thrown from the chuck and striking the operator or bystanders. Maximum clamping force is achieved when the chuck is properly maintained and lubricated, all jaws are fully engaged with the workpiece, and the maximum chuck clamping diameter is not exceeded.
Entanglement. Entanglement with a rotating chuck can lead to death, amputation, broken bones, or other serious injury. Never attempt to slow or stop the lathe chuck by hand, and always roll up long sleeves, tie back long hair, and remove any jewelry or loose apparel BEFORE operating.
Long Stock. Long stock can suddenly whip violently when the lathe is started, or without warning during lathe operations causing death or serious impact injury. Always use additional support with any workpiece that extends from the chuck or the end of the outboard spindle more than three times the workpiece diameter.