Jet BD-920W Operating Instructions Manual

Also see for BD-920W: Brochure Brochure Operating instructions and parts manual

Contents

Jet BD-920W Operating Instructions Manual Manual pdf 7 page image

9Fig 20The follow restis mounted on the saddle andfollows the movement of the tool. Itprevents flexing of long and thinwork pieces under pressure from thetool (Fig 21).Fig 21Set the fingers snug but not overlytight. Lubricate the fingers to preventpremature wear.8. Maintenance and inspectionGeneral notes:Maintenance, cleaning and repairwork may only be carried out afterthe machine is protected againstaccidental starting by pulling themains plug.Clean the machine regularly.Defective safety devices must bereplaced immediately.Repair and maintenance work on theelectrical system may only becarried out by a qualified electrician.8.1 Lubrication scheduleRefer to Fig 22 and Fig 23.Weekly apply oil to:1…oil ball on gear hub3…teeth of reversing gear lightly4…bed ways lightly6…lead screw on entire length7…oil ball on lead screw bracket8…screw and guides of top slide9…oil ball on tailstock body10..oil ball on top of carriage12..hub of feed lever13..oil balls on apron frontWeekly apply grease to:2…teeth of change gears5…rack over entire length11..tailstock quill over entire lengthFig 22Fig 238.2 Bearing adjustmentThe main spindle taper rollerbearings are adjusted at the factory.If end play becomes evident afterconsiderable use the bearings maybe adjusted.Loosen set screw (1, Fig 24) in theslotted nut (2) on the back of thespindle.Fig 24Tighten nut carefully, the spindleshould still revolve freely. Excessivepreloading will damage the bearings.Tighten set screw.8.3 Cross and top slideadjustmentEach slide is fitted with a gib stripand can be adjusted with screws (1,Fig 25) fitted with lock nuts (2).Fig 25Adjust until slides moves freelywithout play.8.4 Cross slide spindleadjustmentRemove the top slide and adjust thegrub screw (1, Fig 26) until thebacklash between the spindle andthe nut is eliminated.Fig 26