VBMT inserts
35° rhombic turning insert. We make 8 VBMT sizes, from VBMT110202 to VBMT160412. Grade, coating and chipbreaker are matched to your material and operation.
What VBMT means
The first four letters of an ISO 1832 designation give the shape, the clearance angle, the tolerance class, and the hole and chipbreaker.
| Code | Feature | Meaning |
|---|---|---|
| V | Shape | 35° rhombic |
| B | Clearance angle | 5° (positive insert) |
| M | Tolerance class | Class M |
| T | Hole and chipbreaker | Hole countersunk on one side, chipbreaker on one face |
Where VBMT inserts are used
The 35° corner gives the most access for profiling and copying fine contours, but it is the weakest of the common corners, so it is used for light cuts and finishing.
VBMT is a positive (5° clearance) 35° rhombic turning insert. It has a countersunk hole for a clamping screw. The chipbreaker is on one face only. Positive inserts cut with lower forces, which suits finishing, small diameters, internal turning and less rigid setups.
Choose the size for your depth of cut, the corner radius for the feed and finish, and a holder made for VBMT inserts of that size.
Questions
- What does VBMT mean?
- It is an ISO 1832 code. V = Shape: 35° rhombic; B = Clearance angle: 5° (positive insert); M = Tolerance class: Class M; T = Hole and chipbreaker: Hole countersunk on one side, chipbreaker on one face.
- Which VBMT sizes do you make?
- 8 sizes, from VBMT110202 to VBMT160412, with inscribed circles from 6.35 to 9.525 mm. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read VBMT110308?
- VBMT = format; 11 = Cutting edge length code (about 11 mm); 03 = Thickness (3.18 mm); 08 = Corner (0.8 mm nominal).
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