Four-blade reamer / Straight flute reamer
The CR415 Series tapered high-helix reamers for through holes are versatile tools designed by JIAYI Tools specifically for machining deep grooves, blind holes, and through holes. Their innovative 45° high-helix design combined with large chip-removal grooves, It achieves breakthroughs in "spiral chip evacuation, zero clogging, and high surface finish" when machining deep slots and blind holes, completely resolving the industry pain points associated with traditional straight-edge reamers, such as "poor chip evacuation, hole-wall scratching, and machining limitations," It provides efficient hole-making solutions for the mold, aerospace, and energy equipment industries, among others.
| Part number | CR415 Series |
|---|---|
| Type | Carbide Reamers |
| Product name | Tapered Helical Reamers / Six-Flute Reamers |
| Example size | D8.68 × 45L × D16 × 186L |
| Coating | Nano DLC |
| OEM / ODM | Made to your samples or drawings |
| Origin | Shenzhen, China |
Design details that keep reaming stable, accurate and chatter-free.
The front blade strip features a 15° guide angle to reduce entry-side compression deformation; the rear blade strip features a 0.002 mm mirror-finish blade to ensure the exit side is free of chipping and burrs, with a hole wall surface roughness consistently achieving Ra ≤ 0.15 μm.
Features a 6-flute structure with unequal pitch to disrupt the cutting vibration frequency; the cutting edge incorporates a 0.002 mm reverse taper and variable-width design to ensure even force distribution during cutting, resulting in hole walls free of vibration marks and steps.
The cutter body is integrally machined from ultra-fine-grain carbide (HRC 68) with a weld-free construction, ensuring no loosening or runout during high-speed, high-feed machining, with a repeatability of ≤0.003 mm.
Utilizing PVD nano-coating technology, this coating is only 1.5 μm thick and has a coefficient of friction as low as 0.15. It is better suited for materials prone to tool sticking than traditional TiAlN coatings and extends tool life by 2.5 times.
Features three built-in helical internal cooling channels with a cooling pressure of up to 120 bar. Combined with a large-capacity chip-discharge groove design, this system increases chip evacuation speed by 50% and prevents chips from scratching the bore walls.
The cutting edge undergoes a 0.002 mm mirror-finish passivation to prevent chipping while ensuring a surface roughness of Ra ≤ 0.15 μm, meeting the requirements for precision sealing.
The front angle features an adaptive design ranging from 3° to 6°, which reduces cutting forces when machining difficult-to-machine materials, minimizes tool wear, and improves machining stability.
Each reamer undergoes G2.5-grade dynamic balancing testing and operates vibration-free at high speeds of 20,000 rpm, ensuring machining stability.
Starting values. Our engineers can tune parameters to your machine and workpiece.
| Workpiece material | Cutting speed vc (m/min) | Feed f (mm/rev) | Coolant |
|---|---|---|---|
| 316L Stainless Steel | 60–90 | 0.05–0.12 | Internal + MQL |
| High-temperature alloy Inconel 718 | 30–50 | 0.03–0.08 | High-pressure internal |
| Ti6Al4V Titanium Alloy | 50–80 | 0.04–0.1 | MQL |
Typical bores and industries for this reamer.
Machining φ1–φ6 mm deep through holes in stainless steel and titanium alloy substrates for orthopedic implants and surgical instruments to ensure the precision and biocompatibility of medical devices.
Machining φ4–φ16 mm deep groove oil passage holes in stainless steel and high-temperature alloy substrates of gas turbines and hydraulic valve blocks to meet the sealing requirements of high-pressure fluid systems.
Machining φ3–φ12 mm deep slot connection holes in titanium alloy and stainless steel substrates for aircraft engine blades and landing gear, with a hole wall surface roughness of Ra ≤ 0.15 μm.
Machining φ5–φ20 mm deep groove guide pin holes on the platen of injection molds and stamping dies, with a depth-to-diameter ratio of up to 8:1 and hole walls free of steps or scratches.
Send your bore size, tolerance and drawing. We manufacture standard sizes and custom reamers made to your samples or drawings.