Accusize Industrial Tools 5C Shank ER40 Collet Chuck, 1.238"-20UNF External Thread, 1.041"-24UNF Internal Thread, Max T.I.R. 0.0002'' O.D to I.D., 0223-0246

• Made of high-grade tool steel, Max RPM: 8000rpm. Shank: 5C; ER Collet Style: ER40; Gage Length: 2.36"; Collet Nut Diameter: 2.48"; External Thread: 1.238"-20UNF; Internal Thread: 1.041"-24UNF.
• Hardened and precision ground. Max TIR 0.0002" O.D to I.D.
• Ultra-precision workholding tool. Ensure all parts are wiped clean before installation to maintain accuracy. Improper installation may affect performance.
• Machine spindle accuracy plays a crucial role. To achieve the best results, ensure the spindle of the machine tool has minimal error and use high-precision ER collets. Many collets are marked as 0.0005", but some may not meet this tolerance.
• 5C shank ER collet chucks are used with collet fixtures and lathe spindles. The ER40 nut is compatible with ER40 collets, allowing secure clamping of round-shank tools. These 5C shank ER collet chucks exceed the market standard in quality, with TIR less than 0.0002".

The Accusize Industrial Tools 5C Shank ER40 Collet Chuck is a key accessory for precision machining, designed for machinists who require exceptional accuracy and reliability. This collet chuck is engineered for use with 5C collet fixtures and lathe spindles, offering a secure and stable tool-holding solution. This chuck accommodates the ER40 collet series, supporting tool diameters from 0.118" to 1.023". The wide capacity range enhances its versatility across different machining operations, making it an ideal choice for various applications. Constructed from high-grade tool steel, this collet chuck undergoes a hardening and precision grinding process to maintain its structural integrity and performance over extended use. Its maximum Total Indicator Runout (TIR) of 0.0002" from the outer diameter to the inner diameter ensures outstanding tool alignment, reducing cutting tool wear and improving surface finishes. Designed to operate at speeds up to 8000 RPM, this chuck supports both high-speed and precision machining tasks. The collet nut features a slotted design with a diameter of 2.48 inches and a gage length of 2.36 inches, facilitating easy handling and compatibility with various setups. The external thread (1.238"-20UNF) and internal thread (1.041"-24UNF) provide a secure and stable attachment, minimizing tool changeover time and improving overall machining efficiency. For optimal performance, users should ensure that the machine spindle and ER collets are of high precision. Any inaccuracies in these components may affect overall machining tolerances. The Accusize 5C Shank ER40 Collet Chuck delivers exceptional reliability, exceeding market standards and offering machinists a durable and precise workholding solution.