SJNTEC REAMER INTRODUCTION
SJ reamers are manufactured by strict quality control, inspection and measurement.
Durability and precision allow us to cut the hole accurately.
It is a tool used for widening a hole penetrated with a drill with the accurate measurements, for finishing as the seismic center,
or precisely finishing the diameter. Ordinarily, it is made of the cutting blades part,
which has a lot of the blades on the outside, and the handle.
Regarding the cutting blades, there are those that are parallel with the axial line and those that are sloped.
The type of the reamer is selected according to the type of the hole being processed.
For the parallel hole, the straight reamer is used, for the hole made with a taper, the taper
reamer is used, and for the center hole, the center reamer is used.
Although, regarding the ordinary reamers, the finishing measurements have been decided,
the adjustment reamer or the expansion reamer can adjust the measurements of the finishing.
In particular, SJNTEC is a leader of the largest reamer maker, especially we are well known for cermet reamer manufacturer.
We supply the best quality of tools with accurate method and smooth finish, considering carefully long life of reamer and smooth
SJNTEC REAMER FEATURE
REAMER PRODUCT TYPE
01 REAMER
SJ manufactures reamers by meeting the requirements of the precision parts business with abundant experiences and technology. REAMER to process wide processed worksfrom nonferrous, general steel to hard die steel, especially previous difficult to cuts.
Process wide
processed works
Meeting the
requirements
of the precision parts
02 CERMET REAMER
The reamer for machining difficult-to-cut materials (heat treated steel, soft steel, aluminium, nonferrous metal, etc.). Good illumination and reasonable price.
Good profile
Excellent
durability of fusion
High cutting
speed
Convenient measurement
management with
great durability of abrasion
Increase tool’s
life with
low abrasion rate
Low friction
coefficient
| MODEL | CERMET REAMER | CARBIDE REAMER |
|---|---|---|
| CUTTING SPEED | Very high (improve productivity) | High |
| ABRASION RATE | Low (has own formation maintenance abrasion pattern) | Normal (if abrasion happens fast, use after coating) |
| SURFACE PROFILE | Excellent size control with low abrasion rate | Difficult size control with fast abrasion rate |
| LIFE | Improve productivity with low abrasion rate, increase tool's life | Use coated product for Increasing tool's life |
| AFFINITY (WORKPIECE) | Unhappening build-up edge, because it's very low affinity | Heat appearance during fast speed processing, build-up edge |
| CONDENSATION HARDNESS | Low (disadvantage) | High (advantage) |
| THERMAL SHOCK RESISTANCE | Low (disadvantage) | High (advantage) |
| HARDNESS | HRA91~93 | HRA88~91 |
| FRICTION COEFFICIENT | Low (Precision processing life extension) | Low (Higher than Cermet) |
| TENSILE STRENGTH | Weak | Strong (Use various workpieces for the general-purpose) |
| MECHANICAL SHOCK | Weak | Strong (Use various workpieces for the general-purpose) |
| PRODUCT FORMING | Difficult to make complicated shapes | Easy to make complicated shapes |
| MEASUREMENT MANAGEMENT | Convenient 0.001~0.003 allowance management | Difficult to manage measurements (according to coating) |
| REFURBISHMENT | Convenient allowance management (difficult to work, chipping profile) | Abrasion condition coating film thickness |