Photo comingSpecifications below are Pioneer’s.
JEM # HPI-HPS-O 8 (4052090)HPS-O 8
BT40 retention knob, MAS 403 P40T-3, 90°, M16, solidBT4090°M16Solid
SpecificationsFrom Pioneer's catalog
- Taper
- BT40
- Style
- MAS 403 P40T-3
- Angle
- 90°
- Thread
- M16
- Overall length
- 2.362"
- Flange to end of knob
- 1.378"
- Knob Ø
- .591"
- Neck Ø
- .394"
- Coolant
- Solid
- Socket
- TWS-M19
Machines
Machines this knob is listed for
BT40, 90°, MAS 403 P40T-3.Verify firstListed as a guide only. Builders change knob specs between models, years and coolant options, so check your machine’s manual, or send us the make, model and serial number and we’ll confirm before you order. The wrong retention knob can let a holder pull out of the spindle.
| Builder | Machines | Taper |
|---|---|---|
| DMG MORI / Mori Seiki | Japanese-built 40-taper (CMX V US build, NVX, NHX, NV/NH, NMV, NVD, Dura Vertical, SV/SH/MV/MH) without thru-spindle coolant | BT40 / CAT40 |
| Hyundai WIA / Kia (legacy) | Kia-built machines: VA-40, KM-40HA (45 degrees); Kiamaster, KV-40A (90 degrees) | BT40 / CAT40 |
| OKK | MCV-350, MCV-410, PCH-400/500, HPV400, MPH-400, MCV-300HS, MCH-450HS; 50-taper MCV, MCH, MHA, KCV, ACM, DCM, VM, HM, PCV-510/620, VG5000, GC600 | BT40 / CAT40 / BT50 |
Don’t see your machine? Call the counter at 408-834-8656 with the make, model and serial number and we’ll find the right knob.
Pioneer’s dimensions
- Overall length (L1)
- 2.362"
- Head Ø (D1)
- .591"
- Neck Ø (D2)
- .394"
- Pilot Ø (D3)
- .669"
- Projection (L2)
- 1.378"
- Pull location (L3)
- 1.102"
- Flange (L4)
- .236"
- Hex flats (F)
- 19mm
- Thread
- M16
- Tightening socket
- TWS-M19