MICRO-QUIK

MICRO-QUIK boring bars are supplied in several shank diameters, including 3/16 in, 1/4 in, and 3/8 in. The shank diameter determines the minimum bore diameter the bar can enter and affects rigidity during internal machining. For example, SKU 15R570 and SKU 15R622 use a 3/16 in shank, SKU 15R649 uses a 1/4 in shank, and SKU 15R701 uses a 3/8 in shank. Selection depends on the bore size and depth of the feature being machined, as well as the required stiffness for the operation.

AlTiN-coated MICRO-QUIK boring bars, such as SKU 15R570 and SKU 15T963, have a wear-resistant coating intended for abrasive materials or higher cutting temperatures. Bright (uncoated) bars, such as SKU 15T974 and SKU 15R701, are used for general-purpose boring and finishing where coating is not required. The choice depends on workpiece material, cutting speed, and whether the operation benefits from reduced friction and improved edge retention. Coated tools are often selected for production runs, while uncoated tools may be preferred for aluminum or where a sharp, uncoated edge is desired.

The center-to-cutting-tip offset is the distance from the bar's shank centerline to the cutting tip. It can be positive or negative. For example, SKU 15R570 has a -0.0438 in offset, SKU 15T963 has a 0.0500 in offset, and SKU 15R701 has a 0.1725 in offset. This dimension determines the minimum bore diameter the bar can enter and the effective cutting radius. A negative offset means the tip is on the opposite side of the centerline compared to a positive offset. Matching the offset to the bore diameter and depth is necessary to avoid interference and achieve the required internal profile.

MICRO-QUIK boring bars are used for internal boring operations on lathes and boring machines. Typical applications include enlarging or finishing small-diameter holes in tool and die work, mold bases, hydraulic components, and general machining. The small shank diameters and specific offsets allow access to bores that larger tooling cannot reach. Right-hand and neutral configurations are available to suit different machine setups and cutting directions. The bars are also used in repair and maintenance work where a worn or damaged bore must be reconditioned to size.

3G Electric interprets customer descriptions and existing part numbers to identify the correct MICRO-QUIK boring bar. Because the line includes many SKUs that differ by shank diameter, offset, coating, and hand of cut, providing the bore diameter, bore depth, workpiece material, and machine toolholder details helps narrow the selection. 3G Electric sources genuine MICRO-QUIK tools and provides logistics support for delivery. For cross-referencing, the manufacturer part number, such as QBB-050300X or QMBB-090700, is the most direct identifier.

Yes. MICRO-QUIK boring bars are supplied in right-hand and neutral configurations. For example, SKU 15T974 is a right-hand boring bar, SKU 15R622 is a right-hand bar with a 0.0030 in radius, and SKU 15R649 is a right-hand bar with a 1/4 in shank. The hand of cut determines the direction of feed and the side of the bore that is machined. Neutral bars can be used for operations where the cutting direction is not fixed. Selection depends on the machine setup and the boring operation sequence.