Onsrud 181G 5-Axis
Key Specifications
Max Spindle
Tool Capacity
Spindle Power
table size x
table size y
machine length
How much does the Onsrud 181G 5-Axis cost?
Price estimate
We do not have a price for the Onsrud 181G 5-Axis that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Onsrud 181G 5-Axis is a fifteen-foot 5-axis gantry router with an 18 in (457 mm) Z-stroke. Onsrud lists it in the 18 in block of its table alone, with a table of 181 in (4,598 mm) by 61 in (1,550 mm).
It is best understood next to the 193G 5-Axis. The two occupy the same frame position, and the frame lengths are within a few inches of each other. But the 193G 5-Axis has a 16 in stroke and a table of 192.5 in (4,890 mm). The 181G 5-Axis trades a foot of table for two inches of Z and a much taller gantry: it stands 140 in (3,556 mm).
Is that trade worth it? Two inches sounds small. On a 5-axis machine with a short stroke, though, every inch decides whether the head can tilt to the angle a part needs without running out of travel. If parts are flat, take the lower machine. If they have ribs, flanges or raised fixtures, the extra stroke is the safer choice.
The machine is 283 in (7,189 mm) long and 136 in (3,455 mm) wide and has 4 vacuum zones as standard. Spindle power is 18 hp (13.4 kW) with 24,000 rpm, or 33 hp (24.6 kW) as an option, and the tool changer holds 12.
Full Specifications
| Parameter | Value |
|---|---|
| Table Size X | 181 in (4,598 mm) |
| Table Size Y | 61 in (1,550 mm) |
| Machine Length | 283 in (7,189 mm) |
| Machine Width | 136 in (3,455 mm) |
| Machine Height | 140 in (3,556 mm) |
| Vacuum Zones Standard | 4 |
| Spindle Motor Power | 18 hp (13.4 kW) |
| Max Spindle Speed | 24,000 rpm |
| Tool Capacity | 12 (larger capacity tool changers optional) |
| Z Stroke | 18 in (457 mm) |
| Spindle Power Optional | 33 hp (24.6 kW) |
| Dual Gantry | Optional |
| Second Tool Changer | Optional |
Specifications sourced from cronsrud.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 18 in (457 mm) Z-stroke on a 181 in (4,598 mm) by 61 in (1,550 mm) table
- 4 vacuum zones as standard
- More tilt clearance than the 193G 5-Axis with its 16 in stroke
- 33 hp (24.6 kW) spindle optional
Limitations
- Machine height of 140 in (3,556 mm)
- A foot less table than the 193G 5-Axis
- Only one Z-stroke under this code
Best For
Frequently Asked Questions
01
181 in (4,598 mm) in X by 61 in (1,550 mm) in Y, with 4 vacuum zones as standard. The frame is 283 in (7,189 mm) long, 136 in (3,455 mm) wide and 140 in (3,556 mm) high.
02
The 193G 5-Axis has a 16 in stroke, a 192.5 in (4,890 mm) table and a machine height of 103 in (2,617 mm). The 181G 5-Axis has an 18 in stroke, a 181 in (4,598 mm) table and a height of 140 in (3,556 mm).
03
Onsrud's table gives 140 in (3,556 mm) for every machine in the 18 in block. The 193G 5-Axis, in the 16 in block, is listed at 103 in (2,617 mm). The page does not say why. Treat the height as a fixed requirement of the 18 in stroke.
04
Onsrud describes pendulum processing for the G-Series, with one zone loaded while the other is machined. The 4 standard zones on this table can be split into two halves of roughly seven and a half feet each.
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