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R 系列深孔钻头 ZU-0380-20I-R

R Series Deep Hole Solid Carbide Drill ZU-0380-20I-R: 20xD Reach, Internal Coolant

ZU-0380-20I-R is the 20xD member of our R Series solid carbide deep hole drills. Internal coolant feeds straight to the cutting edge, so chips flush out of the hole instead of packing up around the flutes, which is usually where deep hole drilling goes wrong.

The flute profile is ground on a dedicated wheel rather than a general-purpose one, and the tetrahedral clearance keeps the edge supported during the long run down the hole. Diameters run from φ3 to φ20mm. If your part needs a different depth-to-diameter ratio, the same design comes in 12xD and 30xD.

  • Special flute profile, ground with a dedicated wheel
  • Tetrahedral clearance for edge strength and cutting stability
  • Double-margin relief keeps the drill supported in deep holes
  • Internal coolant through the tool body
  • 12xD, 20xD and 30xD sub-series, φ3–20mm
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R 系列深孔钻头 ZU-0380-20I-R
Key Advantages

Built for Reliability in the Field

Each part is engineered and QC'd against the exacting standards your equipment demands.

Internal

coolant carries chips out of the hole, which matters most once you pass about 10xD and chip evacuation stops being self-solving

The flute

form is ground on a dedicated wheel, so the profile stays consistent from drill to drill instead of drifting with a worn general wheel

Tetrahedral

clearance holds the edge steady under load, cutting the vibration that normally shows up as chatter marks and oversize holes

Engineered Around Your Workflow
Feature

Engineered Around Your Workflow

ZU-0380-20I-R is the 20xD member of our R Series solid carbide deep hole drills. Internal coolant feeds straight to the cutting edge, so chips flush out of the hole instead of packing up around the flutes, which is usually where deep hole drilling goes wrong.

The flute profile is ground on a dedicated wheel rather than a general-purpose one, and the tetrahedral clearance keeps the edge supported during the long run down the hole. Diameters run from φ3 to φ20mm. If your part needs a different depth-to-diameter ratio, the same design comes in 12xD and 30xD.

  • Special flute profile, ground with a dedicated wheel
  • Tetrahedral clearance for edge strength and cutting stability
  • Double-margin relief keeps the drill supported in deep holes
  • Internal coolant through the tool body
  • 12xD, 20xD and 30xD sub-series, φ3–20mm
Where It Works
Feature

Where It Works

  • Deep hole work in moulds and dies, including ejector pin and cooling channel holes
  • Aerospace parts where hole straightness and surface finish are checked, not assumed
  • Medical instrument and implant components in stainless and other tough alloys
  • Automotive engine and transmission parts: oil galleries, shaft bores, injector body holes
  • General precision machining shops that need one drill family to cover 12xD to 30xD work
Real World

Trusted Across Industries

From mining fleets to manufacturing lines, this part ships globally and runs under load.

Proven in thousands of installations across mining, construction, energy and heavy manufacturing. Designed for 24/7 operation and backed by a responsive engineering support team.

Gallery

Detailed Visual Reference

Inspect every critical surface, tolerance and finish before you commit.

R 系列深孔钻头 ZU-0380-20I-R gallery
R 系列深孔钻头 ZU-0380-20I-R gallery
RFQ

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  • Compatibility check against your machine model
  • Unit price + MOQ + stock status
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  • Datasheet, drawing & certificate package
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Specifications

Technical Specifications

Key parameters below. Full dimensional drawings, tolerance sheets and material certificates available on request.

Model
ZU-0380-20I-R
Series
R Series
Material
Solid carbide
Drilling Depth
20xD
Diameter Range
φ3–20mm
Coolant
Internal coolant
Sub-series
12xD, 20xD, 30xD
Design Features
Special flute profile, tetrahedral clearance, double-margin relief
FAQ

Questions Buyers Often Ask

How deep can the ZU-0380-20I-R actually go?
It is a 20xD drill, so depth is 20 times the diameter: a φ10mm tool reaches 200mm. Treat that as the working limit, not a target. If your hole is close to 20xD, keep coolant pressure up and peck if the material tends to string out.
Will it run on my machine?
The drill needs through-spindle coolant, so check that your machine can deliver it at the pressure the job needs. Also confirm your holder suits the shank. If you are unsure, send us your machine model and spindle interface and we will tell you what fits.
What is the difference between the 12xD, 20xD and 30xD versions?
They share the same flute profile, clearance geometry and internal coolant layout; what changes is the length and the core thickness needed to stay rigid at that reach. Going longer trades rigidity for reach, so pick the shortest ratio that clears your part.
Why does the tetrahedral clearance matter in practice?
It backs up the cutting edge so it does not flex under load. In a deep hole that shows up as less chatter, fewer oversize holes and better hole quality without slowing the cycle down to compensate.
Can I get diameters outside φ3–20mm?
The standard range is φ3–20mm across all three sub-series. Outside that, it depends on the size and quantity, so send the drawing and we will confirm what is feasible before you commit to anything.
What comes with the drill?
Each drill is ground and checked for dimensions and surface finish before it ships. Material certificates and inspection reports are available on request; just tell us what your quality department needs at the quote stage.