Pneumatic Clean Series

Air Gripper/Common Precautions 1Be sure to read before handling. Refer to pages 7 to 16 of Front matter for safety instructions andcommon precautions with clean series. Refer to the main text for precautions for each series.233WarningWarningDesignq In case the moving work piece can pose a danger to personnel,or there is a danger of fingers being caught in a gripper, etc.,implement safety measures such as installation of protectivecovers.w If the circuit pressure drops due to a power failure or troublewith air supply, etc., there is a danger of work piece droppingbecause of reduced holding force. Implement drop preventionmeasures to avoid human injury and equipment damage.SelectionqKeep the holding point within the specified range of the holdingdistance.When the holding point distance becomes large, the finger attachmentapplies an excessively large load to the cross roller section. Refer to thegraph of the specified range of the holding distance for each series.HHolding pointHolding pointLL"L" and "H" are appropriate "L" is too long."H" is too long.distance.wAttachment should be designed as light and short as possible.1. A long and heavy attachment will increase the inertia forceto open or close the fingers. It may cause rattling of thefingers and have an adverse effect on the life.2. Even if the holding point stays within the appropriate range,make the attachment as light and short as possible.3. Select a gripper of a larger size or use more than onegripper to handle a long and large work piece.e Provide a runoff space on the attachment when thework piece is extremely small or thin.With no runoff space, the holding will be unstable,sometimes resulting in dislocation or slipping.HHolding pointWarningq Do not scratch or gouge the escapement by dropping orbumping it when mounting.Even a slight deformation can cause inaccuracy or malfunction.w Tighten the screw within the specified torque rangewhen mounting the attachment.Tightening with a torque exceeding the limit can causemalfunction while insufficient tightening torque can allowpositioning errors or dropping of the work piece.Cautionq Be careful not to twist the finger when mounting iton the attachment.Otherwise rattling or decrease in precision may result.w Avoid external force to fingers.Fingers may be rattled or damaged by continual lateral orimpact loads. Provide clearance to prevent the work pieceor the attachment from striking against any object at thestroke end.1. Stroke end when fingers are openWith clearanceMountingClearanceClearance2. Stroke end when gripper is movingImpact loadWithout clearanceRun off spaceNeedle shaped workRun off spaceThin plate workClearanceImpact loadr Select a model which has a sufficient holding forcefor the work piece weight.Incorrect selection may lead to dropping of the work piece, etc.Refer to the model selection criteria for each series pertainingto effective holding force and work piece weight.tDo not use in applications where excessive externalforce or impact force may be applied to the gripper.It may cause malfunction. Consult SMC with regard to anyother applications.ySelect a model with a sufficient finger opening widthfor the work piece.1. The dispersion of air chuck opening width and work piecediameters may make holding unstable.2. It can cause errors in detection when an auto switch is used.Confirm the auto switch hyteresis for each series toaccommodate an extra stroke length for the hysteresis.With clearance3. When turning overClearanceClearanceTurningoverImpact loadWithout clearance214