Photo comingSpecifications below are JM Performance’s.
JM31118B+OHT
CAT50 High Torque retention knob, 90°, 1-8, solid, O-ringsCAT5090°1-8Solid
SpecificationsFrom JM Performance's product pages
- Taper
- CAT50
- Style
- —
- Angle
- 90°
- Thread
- 1-8
- Flange to end of knob
- 1.778"
- Knob Ø
- .903"
- Neck Ø
- .668"
- Coolant
- Solid
- with O-ring
- Socket
- RKW50
Machines
Machines this knob is listed for
CAT50, 90°.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 | 50-taper SV, SH, MV, MH, MB, NV, NH, NVX, NHX, NMH, NMV, NT; older MC-65, MH-6380, MV-55/50 | BT50 / CAT50 |
JM Performance’s own machine guide lists this knob for Hitachi-Seiki (CAT50), Hwacheon (CAT50), Mori Seiki (CAT50), OKK (CAT50), Victor (CAT50). 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)
- 1.384"
- Flange to end of knob (L2)
- 1.778"
- Flange thickness
- .392"
- Flange (shoulder) Ø
- 1.438"
- Pilot Ø
- 1.036"
- Wrench flats
- 1.245"
- Thread Side O-ring
- 2-118-N674-70
- Thread
- 1-8
- Tightening socket
- RKW50