Photo comingSpecifications below are JM Performance’s.
JM31117HT
BT50 High Torque retention knob, 45°, M24, solidBT5045°M24Solid
SpecificationsFrom JM Performance's product pages
- Taper
- BT50
- Style
- —
- Angle
- 45°
- Thread
- M24
- Flange to end of knob
- 1.770"
- Knob Ø
- .903"
- Neck Ø
- .668"
- Coolant
- Solid
- Socket
- RKW50M
Machines
Machines this knob is listed for
BT50, 45°.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 |
|---|---|---|
| Haas | BT50 machines (BT option on 50-taper VF/EC/VS/HS)Builder p/n 04-1147 (solid) | BT50 |
| 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 | 50-taper FV, FVN, FHN, FXN, PV, BN, FH, FA, RB, SB, SV-65, e500H5; DN-1V/2V/1H | BT50 / CAT50 |
JM Performance’s own machine guide lists this knob for Doosan (BT50), Haas (BT50), Kitamura (BT50), Makino (BT50), Toyoda (BT50). JM gives its machines as a reference only, not a guarantee.
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.
JM Performance’s dimensions
- Knob Ø
- .903"
- Neck Ø
- .668"
- Flange to start of angle (L1)
- 1.376"
- Flange to end of knob (L2)
- 1.770"
- Flange thickness
- .392"
- Flange (shoulder) Ø
- 1.492"
- Pilot Ø
- .984"
- Wrench flats
- 1.175"
- Thread
- M24
- Tightening socket
- RKW50M