JEM # HPI-HPS-C40-OKUMA-CHPS-C40-OKUMA-C
CAT40 retention knob, ANSI B5.50 (Okuma, 4 mm coolant hole), 45°, 5/8-11, coolant-through, O-ringCAT4045°5/8-11Coolant-through
SpecificationsFrom Pioneer's catalog
- Taper
- CAT40
- Style
- ANSI B5.50 (Okuma, 4 mm coolant hole)
- Angle
- 45°
- Thread
- 5/8-11
- Overall length
- 1.624"
- Flange to end of knob
- .640"
- Knob Ø
- .740"
- Neck Ø
- .490"
- Coolant
- Coolant-through
- with O-ring
- Socket
- TWS-075
Machines
Machines this knob is listed for
CAT40, 45°, ANSI B5.50 (Okuma, 4 mm coolant hole).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 |
|---|---|---|
| Okuma | Current US-market CAT40 VMCs/HMCs (GENOS M460-VE/M560-V/M660-V, MB-V, MA-H etc.)Coolant-through takes the builder’s own knobBuilder p/n CAT-40U pull studs (Okuma option name) | CAT40 |
Pioneer’s own machine guide lists this knob for Okuma (CAT40).
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)
- 1.624"
- Head Ø (D1)
- .740"
- Neck Ø (D2)
- .490"
- Pilot Ø (D3)
- .641"
- Projection (L2)
- .640"
- Pull location (L3)
- .440"
- Flange (L4)
- .118"
- Coolant hole Ø (H)
- .157"
- Hex flats (F)
- 0.750 in
- Thread
- 5/8-11
- Tightening socket
- TWS-075