BAER Round Cutting Die UNC 7/8 x 9 - LEFT - HSS
BAER Round Cutting Die UNC 7/8 x 9 - LEFT - HSS
BAER dies are perfect for anyone who wants to cut external threads. Basically, this cutting tool is cylindrical and has - depending on the size - three or more cutting edges inside. The holes between the cutting edges receive the chips, roll them and discharge them. Cutting dies are used to cut screws, nuts and threaded rods in everyday use. This is a left-hand cutting die that can be used to make left-hand thread. Round dies are cylindrical and are used to make external threads in one operation. On the outer casing of the round die there are four holes and a groove which are used to fix the die in suitable die holder and holders by means of retaining screws. External threads are cut by hand with die stock. Special die holders are used for the tailstock on a lathe or for the chuck of a drill. The external thread cutting tool is made of high speed steel (HSS). HSS steel has a higher toughness and a lower susceptibility to breakage compared to HSSE steel. HSS steel is known for its exceptional cutting performance and durability. HSS cutting dies can be used for a wide range of applications, such as structural steels, carbon steels and free-cutting steels. It is also suitable for case-hardening steels and unalloyed tempering steels with a strength of up to 750 N/mm². Cast steel as well as zinc alloys can also be cut with it, as well as pure copper, low-alloy copper, as well as short-chipping copper-tin alloys, plastics such as POM, PVC, etc. It is important that you lubricate the tool plumbed working and with cutting oil or cutting paste.
Dimensions
| Height H |
22 mm |
|---|---|
| Diameter |
7/8 |
| Nominal diameter in inches |
0,875 |
| Nominal diameter in mm |
22,225 |
| Pitch |
9 |
| Pitch in mm |
2,822 |
| Dimension |
UNC 7/8 x 9 |
Characteristics
| Product group |
Round cutting die |
|---|---|
| Product type |
Round cutting dies |
| Thread standard |
UNC: American Unified National Coarse thread according to ANSI B1.1 |
| Tolerance |
2A |
| Direction |
Left |
| Standard |
DIN 223 (DIN EN 2256 |
| Material |
HSS |
Technical information - Cutting dies
1,5
HSS
2A
Applications
- General-purpose use up to 750 N/mm²
- general structural steels, free-cutting steels, case-hardening steels and unalloyed heat-treatable steels
- Pure copper, low-alloyed copper, as well as short-chipping copper-tin alloys
- Plastics such as POM, PVC, etc.
Technical drawing
| Bolt pre-cutting diameter D2 |
22 mm |
|---|---|
| Height H |
22 mm |
| Outside diameter D1 |
55 mm |
| Dimension Diameter D |
UNC 7/8 x 9 |
| Diameter |
7/8 |
Application – Sample materials for dies
| General construction steels | |
|---|---|
| 1.0035 | S185 (St33) |
| 1.0036 | S235JRH |
| 1.0039 | S235JRG1+CR |
| 1.0060 | E335 (St60-2) |
| Free-cutting steels | |
|---|---|
| 1.0718 | 11SMnPb30 |
| 1.0721 | 10S20 |
| 1.0726 | 35S20 |
| 1.0758 | 60SPb20 |
| Case-hardening steels | |
|---|---|
| 1.0401 | (C15) |
| 1.7016 | 17CR3 |
| 1.7131 | 16MnCr5 |
| 1.5919 | 15CrNi6 |
| Quenched and tempered steels unalloyed | |
|---|---|
| 1.0402 | C 22 |
| 1.1151 | C22E (Ck22) |
| 1.0503 | C 45 |
| 1.1191 | C45E (Ck45) |
| Pure copper, low-alloyed copper | |
|---|---|
| 2.0240 | CuZn15 |
| 2.0265 | CuZn30 |
| Copper-tin alloy (bronze) short-chipping | |
|---|---|
| 2.1090.01 | G-CuSn7ZnPb |
| 2.1086.01 | G-CuSn10Zn |
| Plastics |
|---|
| PMMA |
| POM |
| PVC |
