Check the listing for details. Technica Ultra Precision Center Hole Grinder (Inv.13578). Condition: Used. Listed at 8500.00 USD. MikeKanduPortland, CT Technica Ultra precision Center Hole Grinder: (Inv.13578) During Cylindrical Grinding operations, it is often assumed that the machine, it's bearings, imperfect balance of the wheel and defective centers, are the prime causes of poor results with respect to surface finish and geometric form. However, it has in fact proved that the condition of the center hole is the decisive factor. Perfectly geometric center holds are therefore of premier importance for cylindrical grinding. The following errors in center holds directly influence the quality obtained during cylindrical grinding. 1. Out of round2. Poor alignment3. Angle too large4. Angle too small5. Poor surface finish In practice these errors combine with one another. The TECHNICA Center Hold Grinding Machine ZSM offers the best method of grinding center holes which are geometrically round. Such center holes are obtained through three simultaneous motions of the grinding wheel. -Rotary motion of the grinding wheel- Planetary motion of the grinding spindle- Reciprocation motion of the grinding wheel in a plane surface forming an angle of 30 degrees with its axis. This machine features the newer style air pressurized head for longer machine life and accuracy.Swing down center dresserMotorized Chuck (110V single phase) with 3 Jaw Chuck (this was added by prior owner and is bolted directly to the machine column, see photos)Chuck capacity 6-1/2 inches.Max center hole ground, large end 2 inchesMin center hole ground, large end .050 inchesMachine Drives 240/420 Volt 3 phase 60 CycleMachine weight 890 lbs unskidded.Overall Dimensions 24W x 24D x 72H inches. (Inv.13578) Not What You Were Looking For? Check out our eBay Store! where we keep a wide selection of Machine Tools, Tooling Components, Parts, Accessories, and More in stock for your convenience. Please Note!!! When bidding on this item the following will be added to the amount you bid: Also: Skidding/Crating of items are extra costs. This is in addition to the actual shipping charges paid by the buyer. We have the right to resell the item if it is not paid in full within 10 days of the auction. For the purpose of obtaining shipping quotes our Zip Code here is 06480. To Our International Bidders: All international sales are subject to a $15 surcharge in addition to normal shipping and handling costs. Questions? For more information read our Frequently Asked Questions page. Terms All sales are final. Buyer is responsible for actual shipping. Payment must be made within 10 days. For full terms and conditions of sale, Click Here. Shipping If you need help getting shipping quotes, Click Here. View My Other Auctions