Onsrud 420G
Key Specifications
Max Spindle
Tool Capacity
Spindle Power
table size x
table size y
machine length
How much does the Onsrud 420G cost?
Price estimate
We do not have a price for the Onsrud 420G 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
Among the five-foot-wide tables of the 3-axis G-Series, the Onsrud 420G is the longest Onsrud prints: 428 in (10,872 mm) in X by 61 in (1,550 mm) in Y. The model code suggests thirty-five feet. The table figure is eight inches more than that.
A machine like this is a production line more than a router. The standard vacuum layout has 9 zones, and the frame runs to 527 in (13,386 mm) with the 11 in (279 mm) Z-stroke, or 523 in (13,285 mm) with 18 in (457 mm). Material goes on at one point, parts come off at another, and the gantry travels between them. Onsrud's automation options for the series, loading and offloading systems among them, are aimed at exactly this kind of installation.
Be realistic about the standard head. One 18 hp (13.4 kW), 24,000 rpm spindle with 12 tools will take a long time to cover the table alone. Most buyers of this size should be looking at the upgrade list: a 24 hp (17.9 kW) spindle, up to 4 spindles, a second tool changer so tools are not fetched from one end, and a dual gantry.
Height is 103 in (2,617 mm) or 140 in (3,556 mm) depending on stroke, and width is 136 in (3,455 mm). The longest 28 in (711 mm) machine in the narrow group is the 408G.
Full Specifications
| Parameter | Value |
|---|---|
| Table Size X | 428 in (10,872 mm) |
| Table Size Y | 61 in (1,550 mm) |
| Machine Length | 527 in (13,386 mm) with 11 in Z; 523 in (13,285 mm) with 18 in Z |
| Machine Width | 136 in (3,455 mm) |
| Machine Height | 103 in (2,617 mm) with 11 in Z; 140 in (3,556 mm) with 18 in Z |
| Vacuum Zones Standard | 9 |
| Spindle Motor Power | 18 hp (13.4 kW) |
| Max Spindle Speed | 24,000 rpm |
| Tool Capacity | 12 (larger capacity tool changers optional) |
| Z Stroke | 11 in (279 mm); 18 in (457 mm) |
| Spindle Power Optional | 24 hp (17.9 kW) |
| Spindles Optional | Up to 4 |
| Dual Gantry | Optional |
| Second Tool Changer | Optional |
Specifications sourced from cronsrud.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Longest five-foot-wide G-Series table: 428 in (10,872 mm) by 61 in (1,550 mm)
- 9 vacuum zones as standard
- Second tool changer, dual gantry and up to 4 spindles offered
- Frame width of 136 in (3,455 mm), no wider than the 145G
Limitations
- Machine length of 527 in (13,386 mm)
- A single standard spindle is slow to cover a table this long
- Tool changes from one end add travel unless the second changer is fitted
Best For
Frequently Asked Questions
01
The table is 428 in (10,872 mm) in X. The machine is 527 in (13,386 mm) long with the 11 in Z-stroke and 523 in (13,285 mm) with the 18 in Z-stroke, so allow for more than forty feet of floor before any infeed or outfeed equipment.
02
The standard capacity is 12 tools. On a 428 in (10,872 mm) table the gantry may be a long way from the changer when a tool change is called. A second tool changer, a listed upgrade, puts tools within reach at both ends.
03
With the optional dual gantry, yes. Onsrud describes the two gantries producing nested or similar parts in tandem, or one being parked while the other machines large parts end to end. The 9 vacuum zones allow sections to be held separately.
