Photo comingSpecifications below are JM Performance’s.
JM31118DHT
CAT50 High Torque retention knob, 45°, 1-8, coolant-throughCAT5045°1-8Coolant-through
SpecificationsFrom JM Performance's product pages
- Taper
- CAT50
- Style
- —
- Angle
- 45°
- Thread
- 1-8
- Flange to end of knob
- 1.778"
- Knob Ø
- .903"
- Neck Ø
- .668"
- Coolant
- Coolant-through
- Socket
- RKW50
Machines
Machines this knob is listed for
CAT50, 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 |
|---|---|---|
| Fryer | Fryer VMCs / bed mills (CAT40, BT40, CAT50) | CAT40 / BT40 / CAT50 |
| Haas | CT50 machines (VF-*/50, VS, EC-1600, VR, HS) | CAT50 |
| 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 |
| Toyoda / JTEKT | 50-taper FV, FVN, FHN, FXN, PV, BN, FH, FA, RB, SB, SV-65, e500H5; DN-1V/2V/1H | BT50 / CAT50 |
| YCI / Yama Seiki (YCM) | YCM VMC-60A/72A, MAX3 and other YCI machines | BT40 / CAT40 / CAT50 |
JM Performance’s own machine guide lists this knob for Doosan (CAT50), Enshu (CAT50), Haas (CAT50), Toyoda (CAT50), Viper (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
- 1.026"
- Wrench flats
- 1.245"
- Coolant hole Ø
- .312"
- Thread
- 1-8
- Tightening socket
- RKW50