GHI Reamer Series
Excellent finishing accuracy
Carbide reamer series
for cast iron and steel
- Unequal spacing 6 edges for high-precision,
high-efficiency machining
- Excellent roundness by optimum unequal spacing
- Excellent surface roughness by 6 edges
- Highly efficient machining with high feed rate
WHAT IS GHI Reamer series?
①GHI Reamer
For general finishing
Feature: 6 Edges with unequal division
High-precision machining
- Accuracy: IT7
- Roundness: ≤ 10µm
- Surface roughness: ≤ 12.5z
②GHI Reamer Type.T
For thin-walled workpieces
Feature: Low-resistance machining with right-hand twisting
- Accuracy: IT7
- Roundness: ≤ 10µm
- Surface roughness: ≤ 12.5z
③GHI Reamer Type.R
For through-hole
Feature: Improved through-hole chip evacuation with left-hand twisting
- Accuracy: IT7
- Roundness: ≤ 10µm
- Surface roughness: ≤ 12.5z
“Amazing Ideas / Facts!”
The GHI Series Reamers for cast iron and steel:
- Excellent roundness and surface roughness due to the optimized unequal spacing 6 cutting edges.
- Highly efficient machining at high feed rates contributes to shorter cycle times.
- Type T for thin-wall and Type R for through-hole are also available.
Outstanding roundnessGood !
Excellent surface roughnessGood !
Type.T (right-hand twisting)
Reduced cutting resistance (thrust)Good !
Type.R (left-hand twisting)
Improved chip evacuationGood !
POINT!
Machining accuracy by the 6 unequally cpaced edges, the optimal edge profile and the coating.Excellent !
Background / Point for Development
Background
- High feed operation with conventional multi-flute reamers often results in bad roundness and roughness.
Point for Development
- The optimized unequal spacing 6 cutting edges significantly improves roundness.
- The back taper suitable for high feed machining improves surface finish.
- The multi-layer coating contributes to lower tooling costs by extending tool life.
Example
| Tool | GHI reamer GHI reamer Type.T GHI reamer Type.R |
|---|---|
| Workpiece | Test piece |
| Material | FC250 |
| Tool Diameter | ø10mm |
| Cutting Conditions |
|
| Portion | ø0.2 |
| Required accuracy |
|
|---|
Roundness
Surface Roughness
Product Specification
GHI reamer
Tool Specification
| Process covered | FC/FCD/steel hole |
|---|---|
| Diameter | ø6 - |
| Standard conditions |
|
| Performance | IT7 |
GHI reamer Type.T
Tool Specification
| Process covered | FC/FCD/steel hole |
|---|---|
| Diameter | ø6 - 20 |
| Standard conditions |
|
| Performance | IT7 |
GHI reamer Type.R
Tool Specification
| Process covered | FC/FCD/steel hole |
|---|---|
| Diameter | ø6 - 20 |
| Standard conditions |
|
| Performance | IT7 |
Example of applicable work
