Okuma CROWN 762E
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
Max Turn Length
Accuracy
Repeatability
How much does the Okuma CROWN 762E cost?
Estimated price range
Our best estimate for a cnc lathes / turning center in this class — not a quote from Okuma. Configuration moves it a long way.
Overview
The Okuma CROWN 762E is a CNC lathe with an 8 in chuck and a listed maximum turning length of 762 mm (30 in), sized for shaft work with a tailstock. Okuma's current product pages no longer carry it, so buyers will meet it second-hand, and the listed figures are a starting point to verify at the machine.
On length the listed figures hang together. Z-axis travel is 810 mm (31.9 in) against the 762 mm turning length, and the tailstock row reads Yes. X-axis travel is 175 mm (6.9 in), which fits the 305 mm (12 in) maximum turning diameter. The spindle nose is JIS A2-6 with a 2 in bar capacity, and the turret has 8 stations. That is a modest count. A shaft needing rough and finish turning, grooving, threading and a center drill uses most of the turret, so expect tool changes between jobs.
Listed positioning accuracy is ±0.005 mm and repeatability ±0.003 mm, with rapid traverse of 15 m/min in X and 18 m/min in Z. On a second-hand lathe those two accuracy figures should be re-measured, since they describe the machine as built and not as it stands today. The control is listed as the Okuma OSP-P300L.
Some rows disagree with others and should be settled at the machine. Spindle speed appears as 3,000 RPM and as 4,200 RPM, power as 7.5 kW (10 hp) and as 12 hp, and a second pair of capacity figures gives a 10.63 in turning diameter and a 19.68 in machining length. Swing over the bed is 21.65 in. The weight row reads 9670 with no unit.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 305 mm (12 in) |
| Max Turning Length | 762 mm (30 in) |
| Swing Over Bed | 21.65" |
| Max Spindle Speed | 3,000 RPM |
| Spindle Motor Power | 7.5 kW (10 hp) |
| Spindle Nose | JIS A2-6 |
| Chuck Size | 8" |
| Bar Capacity | 2" |
| Turret Stations | 8 |
| X Axis Travel | 175 mm (6.9 in) |
| Z Axis Travel | 810 mm (31.9 in) |
| Rapid Traverse Rate | 15 m/min X, 18 m/min Z |
| Positioning Accuracy | ±0.005 mm |
| Repeatability | ±0.003 mm |
| Machine Weight | 9670 |
| CNC Control | Okuma OSP-P300L |
| Power | 12 hp |
| Max RPM | 4,200 RPM |
| Turning Dia | 10.63" |
| Machining Length | 19.68" |
| Tailstock | Yes |
| Dimensions | 95"x69"x70" |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Listed 762 mm (30 in) turning length on 810 mm (31.9 in) of Z-axis travel, with a tailstock
- JIS A2-6 spindle nose, 8 in chuck and 2 in bar capacity
- Listed positioning accuracy of ±0.005 mm and repeatability of ±0.003 mm
- Rapid traverse of 15 m/min in X and 18 m/min in Z
Limitations
- An 8-station turret limits how many tools stay set up between jobs
- Listed spindle speed (3,000 RPM and 4,200 RPM) and power (7.5 kW (10 hp) and 12 hp) each appear twice with different values
- X-axis travel of 175 mm (6.9 in) and a 305 mm (12 in) turning diameter rule out larger chuck work
- Weight is listed as 9670 without a unit, so rigging and floor loading need the real figure
Best For
Frequently Asked Questions
01
The listed maximum turning length is 762 mm (30 in), on 810 mm (31.9 in) of Z-axis travel, and a tailstock is listed. A second row gives a machining length of 19.68 in, which does not match, so measure the distance from chuck to tailstock on the machine being considered.
02
The listed figures disagree. One pair of rows gives 3,000 RPM and 7.5 kW (10 hp); another gives 4,200 RPM and 12 hp. The spindle nose is JIS A2-6 in either case. Read the motor plate and the control's spindle parameters on the machine to find out which applies.
03
The turret is listed with 8 stations. For shaft work that is enough for one job at a time, but with roughing, finishing, grooving and threading tools loaded there is little room to leave a second job's tooling in place.
04
Positioning accuracy of ±0.005 mm and repeatability of ±0.003 mm. Both describe the machine as built. Before buying a second-hand example, ask for a recent test cut or measurement record, because wear in the ballscrews and ways changes these values.
05
The listed control is the Okuma OSP-P300L. Check the control model on the machine itself, since no control options are given in the listed figures and the control fitted decides which programs and options carry over from other lathes in the shop.
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