QUICK CHANGE FEED BOX Back to Index QUICK CHANGE FEED BOX The feed box forms a totally enclosed oil bath and provides 45 thread pitches and 45 feeds (as shown on the Screw Cutting and Feed Chart). Changes are accomplished, without any wheel changes being necessary, through a train of heat treated gears carried on high tensile heat treated splined shafts running in phosphor bronze bearings. the tumbler arm removed and the from cover taken off, but in case it is necessary to take down the tumbler shaft the following sequence of operations is recommended: Removal of Tumbler Shaft 1. Drain oil. 2. Remove Tumbler Arm plug. 3. Take out 1/4" grub screw. 4. Release grip of arm and remove. 5.
Remove front cover. 6. Remove tumbler gear. 7. Remove circlip. 8. Remove three 3/16" Cap screws in flanged bearing The feed box, while simple, is very effective and robust, and is controlled by means of three selection levers at the. front of the box. A fourth lever operates the leadscrew disengagement. Change wheels for cutting Metric pitches are only furnished at extra cost. Should be removal of any part of the feed box become necessary, the dismantling procedure will be clear if the oil is drained, 9. Slide shaft out in direction of tailstock. 10. Withdraw flanged bearing. 11. Remove tumbler bearing. Formula to obtain Gears for special threads