Description
Product Overview
The KYOCERA 226L-0165.250 left-hand micro drill bit is engineered for the most demanding precision drilling tasks. With a cutting diameter of just 0.42 mm and a 130° cutting angle, this tool delivers the accuracy required for creating minute holes in hardened steel, copper, and delicate electronic substrates. The bit is fabricated from sub‑micron grain carbide, a material known for its exceptional hardness, wear resistance, and ability to maintain a sharp cutting edge even after thousands of penetrations. Its 3 mm shank is designed to fit standard drill chucks, providing a secure fit that minimizes run‑out and vibration. The overall length of 38 mm and a cutting length of 6.40 mm give the user enough reach to work in tight spaces while preserving the rigidity needed for consistent performance. The product dimensions of 1.88 × 0.5 × 0.5 inches and a weight of 0.19 oz make it lightweight yet robust, ensuring ease of handling during extended machining sessions. This micro drill bit is part of Kyocera’s renowned series of precision tools, reflecting the company’s commitment to quality and innovation in the industrial tooling market.
Usage
Designed for professionals in aerospace, electronics manufacturing, medical device production, and fine‑mechanical engineering, this left‑hand micro drill bit excels in applications where space is limited and tolerances are tight. It is ideal for drilling pilot holes for micro‑screws, creating vias on printed circuit boards, and machining intricate features on hardened alloys used in aerospace components. The left‑hand rotation reduces the tendency of the chip to wrap around the tool, improving chip evacuation and extending tool life in high‑speed drilling operations. Users can employ the bit in CNC machines, manual drill presses, or handheld rotary tools equipped with a 3 mm collet, making it versatile across a range of equipment. Proper coolant application, such as a mist of oil or water‑based coolant, further enhances performance by reducing heat buildup and preventing carbide oxidation. The bit’s compact size also makes it suitable for handheld repair work, allowing technicians to quickly address defects or create mounting points on delicate assemblies without the need for large, cumbersome tooling.
Why Choose Us
Choosing the KYOCERA 226L-0165.250 means selecting a tool that combines decades of material science expertise with rigorous manufacturing controls. Kyocera Precision Tools Inc. subjects each batch of carbide to a multi‑stage heat‑treatment process that aligns the grain structure at a sub‑micron level, resulting in a uniform hardness that resists chipping and deformation. The company also implements a strict quality‑inspection protocol, including dimensional verification and cutting‑edge geometry checks, to ensure every bit meets the exact specifications required for high‑precision drilling. In addition, Kyocera provides comprehensive technical support, offering guidance on optimal drilling parameters, coolant selection, and maintenance practices to help users achieve the best possible results. The brand’s global reputation for reliability and performance is reinforced by its extensive distribution network, ensuring that replacement parts and accessories are readily available. By investing in this micro drill bit, customers benefit from reduced downtime, lower tool replacement costs, and consistent product quality that supports their most critical manufacturing processes.
Key Features
- Ultra‑fine 0.42 mm cutting diameter delivers precise hole placement for high‑density circuitry.
- 130° cutting angle reduces thrust force, enabling smoother entry into hard materials.
- Sub‑micron grain carbide construction provides superior wear resistance and long tool life.
- 3 mm shank fits standard chucks, offering easy integration with existing equipment.
- Kyocera technical support ensures optimal performance and quick assistance for any drilling challenges.
FAQ
What materials can this micro drill bit safely drill?
The bit is designed for hardened steel, stainless steel, copper, brass, aluminum, and most non‑ferrous alloys commonly used in aerospace and electronics. Its carbide composition also allows it to penetrate ceramic substrates and composite materials when proper coolant is applied.
How does the left‑hand rotation benefit drilling?
Left‑hand rotation helps to pull chips away from the cutting edge, reducing the chance of chip re‑welding and extending the life of the cutting edge. This is especially advantageous when drilling deep, narrow holes where chip evacuation is critical.
What coolant should be used with this drill bit?
For metalworking applications, a light oil mist or water‑based coolant works well. The coolant should be applied continuously to keep the cutting zone cool, minimize heat‑induced carbide wear, and improve surface finish.
Can this bit be used in CNC machines?
Yes, the 3 mm shank is compatible with most CNC spindle collets and tool holders. When programming CNC operations, set the spindle speed to a range of 10,000–20,000 rpm and adjust feed rates based on material hardness to achieve optimal results.
What is the recommended feed rate for drilling hardened steel?
For hardened steel, a feed rate of 0.02–0.04 mm per revolution is typical. Adjust the feed based on the specific hardness and thickness of the workpiece, and always monitor tool wear to prevent premature failure.
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