Okamoto ACC-1632DX
Key Specifications
Table Size
Spindle Power
table longitudinal travel
table cross travel
vertical travel
max workpiece height
How much does the Okamoto ACC-1632DX 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-1632DX is a CNC surface grinder sized around a 406 x 813 mm (16 x 32 in) magnetic chuck, with 940 mm (37 in) of longitudinal table travel and 460 mm (18.1 in) of cross travel. Vertical travel is also 460 mm (18.1 in), and the control is the Okamoto ACC CNC.
Travel is generous relative to the chuck. The table moves 940 mm (37 in) under a chuck 813 mm (32 in) long, so the wheel runs clear of both ends of a full-length part, and the 460 mm (18.1 in) cross travel covers the 406 mm (16 in) chuck width with space to bring the wheel off each side. Parts up to 310 mm (12.2 in) tall fit under the wheel.
Weight is the figure to watch. Maximum workpiece weight is 250 kg (550 lb), and a steel plate that fills the chuck reaches that limit long before it reaches the height limit. Weigh die blocks and stacked fixtures before loading them.
Table speed is listed from 3 to 25,000 mm/min (0.1 to 985 ipm), a range that spans slow creep-feed passes and fast reciprocating strokes on one machine. Vertical infeed resolution is 0.001 mm (0.00004 in), the longitudinal and cross axes run on box ways, and the grinding spindle turns at 2,900 RPM. Machine weight and floor space appear in the table only as ranges, so ask Okamoto for the values that apply to this size before planning rigging and layout.
Full Specifications
| Parameter | Value |
|---|---|
| Table Size | 24″ x 48″ to 32″ x 120″ |
| Table Longitudinal Travel | 940 mm (37 in) |
| Table Cross Travel | 460 mm (18.1 in) |
| Vertical Travel | 460 mm (18.1 in) |
| Max Workpiece Height | 310 mm (12.2 in) |
| Max Workpiece Weight | 250 kg (550 lb) |
| Grinding Spindle Power | 5.5 kW (7.5 HP) |
| Grinding Spindle Speed | 2,900 RPM |
| Max Grinding Wheel Diameter | 406 mm (16 in) |
| Max Grinding Wheel Width | 50 mm (2 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 | 406 x 813 mm (16 x 32 in) |
| CNC Control | Okamoto ACC CNC (Fanuc-based) |
| Chuck Size | 16" x 32" |
| Spindle Nose to Table (max) | 23.5″ to 27.3″ |
| Grinding Wheel | 20″ x 3″ x 8″ |
| Spindle Motor Power | 20 hp |
| Floor Space | 213″ x 100″ x 86″ to 357″ x 125″ x 94″ |
| Machine Weight | 16,540 to 35,200 lbs |
Specifications sourced from okamotocorp.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Table travel of 940 mm (37 in) by 460 mm (18.1 in) over a 406 x 813 mm (16 x 32 in) magnetic chuck, leaving overrun on every side
- Table speed from 3 to 25,000 mm/min (0.1 to 985 ipm) covers both creep-feed and reciprocating grinding
- Vertical infeed resolution of 0.001 mm (0.00004 in)
- Box-way guideways on the longitudinal and cross axes
- Room for workpieces up to 310 mm (12.2 in) tall within 460 mm (18.1 in) of vertical travel
Limitations
- Workpiece weight is limited to 250 kg (550 lb), which a full-chuck steel plate reaches well before the 310 mm (12.2 in) height limit
- Grinding spindle speed is listed as a single 2,900 RPM figure, with no variable range stated
- Machine weight and floor space are listed only as ranges, so installation figures for this size must be confirmed
Best For
Frequently Asked Questions
01
The magnetic chuck is 406 x 813 mm (16 x 32 in). Table travel is 940 mm (37 in) longitudinally and 460 mm (18.1 in) across, so the wheel can pass beyond the chuck on all four sides and leave no unground margin.
02
Up to 250 kg (550 lb) and up to 310 mm (12.2 in) tall. On dense material the weight limit is reached first, so check the mass of the part plus any fixture plates or vises that sit on the chuck with it.
03
Chuck, travel and load. The ACC-1224DX has a 305 x 610 mm (12 x 24 in) magnetic chuck, 720 mm (28.3 in) by 350 mm (13.8 in) of table travel and a 136 kg (300 lb) workpiece limit. The ACC-1632DX has 406 x 813 mm (16 x 32 in), 940 mm (37 in) by 460 mm (18.1 in) and 250 kg (550 lb).
04
Table speed runs from 3 to 25,000 mm/min (0.1 to 985 ipm) and vertical infeed resolution is 0.001 mm (0.00004 in). The low end of the table speed range allows creep-feed work, and the fine infeed step supports light finishing passes.
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