Photo comingSpecifications below are Pioneer’s.
JEM # HPI-HPS-1 (4052045)HPS-1
BT40 retention knob, MAS 403 P40T-1, 45°, M16, solidBT4045°M16Solid
SpecificationsFrom Pioneer's catalog
- Taper
- BT40
- Style
- MAS 403 P40T-1
- Angle
- 45°
- 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, 45°, MAS 403 P40T-1.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 (formerly Hitachi Seiki) | VK, VM-40/50, VS-40/50/60, VKC, VA, HG-400, HS, HK-630, HA series; Hitachi Seiki VA-35/40, HC-400, VK-45, VM-40, Minimatic | BT40 / CAT40 |
| Fryer | Fryer VMCs / bed mills (CAT40, BT40, CAT50) | CAT40 / BT40 / CAT50 |
| Haas | BT40 mills (BT option, mostly export)Builder p/n 04-0297 (TSC) | BT40 |
| Hwacheon | VESTA-660, VESTA-650T, VESTA-610D, VESTA-1000+, SIRIUS-UL+ (12K/14K/20K) and other BT40 models | BT40 / CAT40 |
| Hyundai WIA | KF series VMCs (KF4600, KF5600, KF5600 II, KF6700 etc.), BBT40 standard | BT40 |
| Hyundai WIA / Kia (legacy) | Kia-built machines: VA-40, KM-40HA (45 degrees); Kiamaster, KV-40A (90 degrees) | BT40 / CAT40 |
| Johnford | VMC-1050 and other Johnford VMCs | BT40 / CAT40 / CAT50 |
| Kitamura | Older Mycenter 3, 4, 5, 6, H300, H300B, H500, H600, H800, Jig Center 7/8 | CAT40 / BT40 / CAT50 |
| Leadwell | MCV-0, MCV-OP, MCV-550E/S/D, MCV-610S, MCV-760XL, V-350, V-410, MCH-350/500 | BT40 / CAT40 |
| OKK | PCV, VM, VP, VC, HM, HP series, TRC, AMC, DGM, GC, PG8, PM400III, DV5, VB53, GR400 (40-taper)Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| Okuma | Okuma-Howa / MILLAC series (Millac 3-VA, 4-VA, 4-H; MILLAC V/H; MM-300, ML-300) | BT40 / CAT40 |
| Takumi (Hurco group) | V-series VMCs (V8, V10, V12, V15, V22 etc.) and other Takumi modelsCoolant-through takes the builder’s own knob | BT40 / BT50 |
| Toyoda / JTEKT | FA, FV, FVN, FXN, JV, PV series, e500H4, UX570 (40-taper); FHN-40, FV-45, FVN-40Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| Yasda | YBM, YPC, VPC series, H30i, H40 (40-taper)Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| YCI / Yama Seiki (YCM) | YCM VMC-60A/72A, MAX3 and other YCI machines | BT40 / CAT40 / CAT50 |
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