Okamoto ACC-1224DX
Key Specifications
Table Size
Spindle Power
table longitudinal travel
table cross travel
vertical travel
max workpiece height
How much does the Okamoto ACC-1224DX cost?
Estimated price range
Our best estimate for a cnc grinding machine in this class — not a quote from Okamoto. Configuration moves it a long way.
Overview
The Okamoto ACC-1224DX is a CNC surface grinder for small plates and tooling components. Its magnetic chuck measures 305 x 610 mm (12 x 24 in), the table travels 720 mm (28.3 in) longitudinally and 350 mm (13.8 in) across, and workpieces can weigh up to 136 kg (300 lb).
Height is where this size is strong. Vertical travel is 460 mm (18.1 in) and a workpiece can be 310 mm (12.2 in) tall. The ACC-1632DX lists the same two figures on a larger chuck, so the smaller machine gives up nothing in height. Blocks stood on edge, parts held in a vise and work mounted on a sine fixture all fit.
The wheel can be up to 355 mm (14 in) in diameter and 38 mm (1.5 in) wide, and the grinding spindle runs at 2,900 RPM. With a wheel that narrow against a 305 mm (12 in) chuck width, a full surface is covered by stepping across in cross feed, and the cycle time for large flats follows from that.
Under the Okamoto ACC CNC the vertical infeed resolves 0.001 mm (0.00004 in), and the table can be driven anywhere from 3 to 25,000 mm/min (0.1 to 985 ipm). Both the longitudinal and the cross axis use box ways. Note that the table states machine weight and floor space as ranges, not as single values; get the numbers for this size from Okamoto before arranging transport or a foundation.
Full Specifications
| Parameter | Value |
|---|---|
| Table Size | 24″ x 48″ to 32″ x 120″ |
| Table Longitudinal Travel | 720 mm (28.3 in) |
| Table Cross Travel | 350 mm (13.8 in) |
| Vertical Travel | 460 mm (18.1 in) |
| Max Workpiece Height | 310 mm (12.2 in) |
| Max Workpiece Weight | 136 kg (300 lb) |
| Grinding Spindle Power | 3.7 kW (5 HP) |
| Grinding Spindle Speed | 2,900 RPM |
| Max Grinding Wheel Diameter | 355 mm (14 in) |
| Max Grinding Wheel Width | 38 mm (1.5 in) |
| Table Speed | 3 – 25,000 mm/min (0.1 – 985 ipm) |
| Vertical Infeed Resolution | 0.001 mm (0.00004 in) |
| Guideway System | Box-way (longitudinal and cross) |
| Magnetic Chuck Size | 305 x 610 mm (12 x 24 in) |
| CNC Control | Okamoto ACC CNC (Fanuc-based) |
| Spindle Nose to Table (max) | 23.5″ to 27.3″ |
| Spindle Motor Power | 20 hp |
| Machine Weight | 16,540 to 35,200 lbs |
| Floor Space | 213″ x 100″ x 86″ to 357″ x 125″ x 94″ |
Specifications sourced from okamotocorp.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Workpiece height up to 310 mm (12.2 in) and 460 mm (18.1 in) of vertical travel, the same as the larger ACC-1632DX
- Wheel up to 355 mm (14 in) in diameter and 38 mm (1.5 in) wide, running at 2,900 RPM
- Longitudinal travel of 720 mm (28.3 in) gives overrun beyond the 610 mm (24 in) chuck length
- Vertical infeed resolution of 0.001 mm (0.00004 in) under the Okamoto ACC CNC
- Table speed adjustable from 3 to 25,000 mm/min (0.1 to 985 ipm)
Limitations
- Workpiece weight is capped at 136 kg (300 lb); the ACC-1632DX carries 250 kg (550 lb)
- Cross travel of 350 mm (13.8 in) limits plate width; the ACC-1632DX offers 460 mm (18.1 in)
- Wheel width stops at 38 mm (1.5 in), so wide surfaces take many cross-feed steps
- Machine weight and floor space are stated as ranges, not as values for this size
Best For
Frequently Asked Questions
01
The table travels 720 mm (28.3 in) longitudinally and 350 mm (13.8 in) across, and vertical travel is 460 mm (18.1 in). Both table travels are longer than the 305 x 610 mm (12 x 24 in) magnetic chuck, so the wheel can leave the part at each end of a stroke.
02
The maximum wheel is 355 mm (14 in) in diameter and 38 mm (1.5 in) wide. Grinding spindle speed is listed as 2,900 RPM. Wide surfaces are ground by stepping the wheel across in cross feed, since the wheel is far narrower than the chuck.
03
The maximum workpiece weight is 136 kg (300 lb), and the maximum workpiece height is 310 mm (12.2 in). If parts are heavier, the ACC-1632DX is listed at 250 kg (550 lb) with the same height capacity.
04
Yes, within its weight limit. It accepts workpieces up to 310 mm (12.2 in) tall and has 460 mm (18.1 in) of vertical travel, which leaves room for a vise or an angle fixture under the part as long as the total stays below 136 kg (300 lb).
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