China wholesale Drill Bit - High quality drill bits for different drilling processing – FOREST

Product Description

In mechanical processing, according to the different structure and technical requirements of the hole, different processing methods can be used. These methods can be summarized into two categories: one is to process the hole on the solid workpiece, that is, to process the hole from the entity; The other is semi-finishing and finishing of existing holes. Non-matching holes are generally drilled directly on the solid workpiece by drilling; for matching holes, it is necessary to drill on the basis of the accuracy and surface quality requirements of the processed hole, using reaming, boring, and grinding. Fine processing methods such as cutting for further processing. Reaming and boring are typical cutting methods for finishing existing holes. To realize the precision machining of holes, the main machining method is grinding. When the surface quality of the hole is required to be very high, it is necessary to use fine boring, grinding, honing, rolling and other surface finishing methods; the processing of non-round holes requires the use of slotting, broaching and special processing methods.

Structure Characters

Material of drill bits: High speed steel 6542(M2) ,M35(Co), M42(Co), Tungsten carbide tungsten steelProcessing Marks:1, Tell us the material and hardness.2, Finishing hole diameters3, Processing machines types4, Choose right rotation of processing.
Items	D1	L2	D2	L1
0,8mm	0.8mm	10mm	0.8mm	32mm
1mm	1mm	12mm	1mm	34mm
1.2mm	1.2mm	14mm	1.2mm	36mm
1.5mm	1.5mm	18mm	1.5mm	40mm
1.8mm	1.8mm	18mm	1.8mm	40mm
2mm	2mm	24mm	2mm	49mm
2.2mm	2.2mm	24mm	2.2mm	49mm
2.5mm	2.5mm	30mm	2.5mm	57mm
2.6mm	2.6mm	30mm	2.6mm	57mm
2.8mm	2.8mm	33mm	2.8mm	57mm
3mm	3mm	33mm	3mm	61mm
3.2mm	3.2mm	35mm	3.2mm	65mm
3.3mm	3.3mm	35mm	3.3mm	65mm
3.4mm	3.4mm	37mm	3.4mm	65mm
3.5mm	3.5mm	39mm	3.5mm	70mm
3.8mm	3.8mm	39mm	3.8mm	70mm
4mm	4mm	43mm	4mm	75mm
4.2mm	4.2mm	43mm	4.2mm	75mm
4.5mm	4.5mm	47mm	4.5mm	85mm
4.8mm	4.8mm	51mm	4.8mm	85mm
5mm	5mm	51mm	5mm	86mm
5.2mm	5.2mm	52mm	5.2mm	86mm
5.5mm	5.5mm	57mm	5.5mm	93mm
5.8mm	5.8mm	57mm	5.8mm	93mm
6mm	6mm	57mm	6mm	93mm
6.2mm	6.2mm	63mm	6.2mm	96mm
6.5mm	6.5mm	63mm	6.5mm	96mm
6.8mm	6.8mm	69mm	6.8mm	100mm
7mm	7mm	69mm	7mm	109mm
7.2mm	7.2mm	69mm	7.2mm	109mm
7.5mm	7.5mm	69mm	7.5mm	109mm
7.8mm	7.8mm	69mm	7.8mm	109mm
8mm	8mm	75mm	8mm	117mm
8.2mm	8.2mm	75mm	8.2mm	117mm
8.5mm	8.5mm	75mm	8.5mm	117mm
8.8mm	8.8mm	75mm	8.8mm	117mm
9mm	9mm	81mm	9mm	125mm
9.5mm	9.5mm	81mm	9.5mm	125mm
9.8mm	9.8mm	85mm	9.8mm	125mm
10mm	10mm	87mm	10mm	133mm
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