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The OSG 300-0394 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a 1 mm reamer diameter and a tight tolerance of +0.0001 to +0.0004 inches, this tool delivers consistent, accurate bores in a single pass. The 4-flute straight configuration and right-hand cutting direction make it well suited for use in CNC machining centers, manual mills, and drill presses where controlled material removal and bore quality are required. Machinists and toolroom technicians are the primary users of this style of reamer.
This reamer is intended for through-hole and blind-hole finishing operations in a range of workpiece materials common to general machining. Its compact 38 mm overall length and 10 mm flute length make it effective in tight-clearance setups and small-bore applications. The bright, uncoated finish keeps the tool ready for use as-received without additional preparation. It is part of the OSG 300D series, which covers standard carbide reamers for everyday production and toolroom use.
Designed as a standard OEM-style solid carbide chucking reamer for general machining applications requiring 1 mm finished bore diameter.
Installation and use should be performed by a qualified machinist or toolroom technician. Secure the straight cylindrical shank in a precision collet or drill chuck, ensuring full and even grip before operation. Power down and lock out the machine before changing or inspecting tooling. Do not force the reamer into an undersized pilot hole - pre-drill or bore the hole to the appropriate starting diameter before reaming.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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