Photo comingSpecifications below are JM Performance’s.
JM31109HS
BT30 retention knob, 45°, M12, solid, 9310HBT3045°M12Solid
SpecificationsFrom JM Performance's product pages
- Taper
- BT30
- Style
- —
- Angle
- 45°
- Thread
- M12
- Flange to end of knob
- .904"
- Knob Ø
- .431"
- Neck Ø
- .274"
- Coolant
- Solid
- Socket
- RKW30M
Machines
Machines this knob is listed for
BT30, 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 |
|---|---|---|
| DMG MORI / Mori Seiki | BT30 compact machines (Milltap 700, Accumill 4000, Ultimill, MAX3000, TV-300/400) and other DMG MORI BT30 machines | BT30 |
| FANUC | ROBODRILL (alpha-D21MiB5, D21LiB5, T14/T21/D14/D21 iA-iF, Drill Mate)Coolant-through takes the builder’s own knob | BT30 |
| Haas | BT30 machines (DT-1, DM-1, DT-2, DM-2 drill/mill centers)Builder p/n 04-1420 (TSC, 10-pack), 04-1422 (TSC, single) | BT30 |
| Tormach | 770MX, 1100MXCoolant-through takes the builder’s own knob | BT30 |
JM Performance’s own machine guide lists this knob for Haas (BT30), Hyundai (BT30), Hyundai-Kia (BT30), Matsuura (BT30). 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
- .431"
- Neck Ø
- .274"
- Flange to start of angle (L1)
- .707"
- Flange to end of knob (L2)
- .904"
- Flange thickness
- .195"
- Flange (shoulder) Ø
- .648"
- Pilot Ø
- .492"
- Wrench flats
- .505"
- Thread
- M12
- Tightening socket
- RKW30M