3/16" I.D. X 3/4" O.D. Guhring Guhrojet Peripheral Coolant Fed Hydraulic Chuck Reduction Sleeve For Clamping Smaller Shank Diameter In Hydraulic Chucks | For Tool Shank Tolerance H6 | Concentricity Deviation ? 2 Um | With Adjustable Limit Stop | With Coolant Slots For Peripheral Cooling, Improving Machining Process And Extending Cutting Tool Life | The Application Of Reduction Sleeves Permits Transferable Torque Increase Of Approximately 25% In Comparison To Direct Clamping. The Reduction Sleeve Outside Diameter Must Match Your Hydraulic Chuck's Nominal Inside Diameter. Reduction Sleeves Are Available In 6 Different Outside Diameters; 1/2", 3/4", 1-1/4", 12Mm, 20Mm & 32Mm For Clamping Tool Shanks From 1/8" To 1" & 3Mm To 25Mm. Series No. 4369, Order Code 004.0190. Made In Germany, Guhring Part #9043690040190

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