Onsrud 312G
Key Specifications
Max Spindle
Tool Capacity
Spindle Power
table size x
table size y
machine length
How much does the Onsrud 312G cost?
Price estimate
We do not have a price for the Onsrud 312G 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
Twenty-six feet is the table length of the Onsrud 312G: 312 in (7,925 mm) in X, with 61 in (1,550 mm) in Y and a 28 in (711 mm) Z-stroke. Unlike several long G-Series models, its code matches its table figure exactly.
It is a long, tall, narrow machine. The frame is 419 in (10,643 mm) long, only 142 in (3,607 mm) wide, and 155 in (3,937 mm) high. That shape fits along a wall or between column lines, which is often where a machine for long parts has to go.
Seven vacuum zones are standard. With a bed this long, the practical questions are about travel time and tools, not table area. Where does the tool changer sit? How far does the gantry return for each change? Onsrud lists a second tool changer as an upgrade, and on this model it should be part of the first conversation. The standard capacity is 12 tools.
Power is 18 hp (13.4 kW) at 24,000 rpm as standard, 24 hp (17.9 kW) as an option. The low-stroke machine of about the same frame length is the 333G, whose table is longer at 334 in (8,484 mm).
Full Specifications
| Parameter | Value |
|---|---|
| Table Size X | 312 in (7,925 mm) |
| Table Size Y | 61 in (1,550 mm) |
| Machine Length | 419 in (10,643 mm) |
| Machine Width | 142 in (3,607 mm) |
| Machine Height | 155 in (3,937 mm) |
| Vacuum Zones Standard | 7 |
| Spindle Motor Power | 18 hp (13.4 kW) |
| Max Spindle Speed | 24,000 rpm |
| Tool Capacity | 12 (larger capacity tool changers optional) |
| Z Stroke | 28 in (711 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
- 312 in (7,925 mm) by 61 in (1,550 mm) table with 28 in (711 mm) of Z
- Narrow frame of 142 in (3,607 mm) for a machine 419 in (10,643 mm) long
- 7 vacuum zones as standard
- Second tool changer available to cut gantry travel
Limitations
- Gantry travel is long for every tool change without the second changer
- Machine height of 155 in (3,937 mm)
- Table shorter than the 333G of similar frame length
Best For
Frequently Asked Questions
01
312 in (7,925 mm) in X and 61 in (1,550 mm) in Y, with 7 vacuum zones as standard. The table is one five-foot sheet wide and long enough for three eight-foot sheets with room to spare.
02
The 408G is the next and last size in the 28 in group. The 408G table is 408 in (10,364 mm), it lists 9 vacuum zones, and the frame is 515 in (13,081 mm) long. Width and height are the same as the 312G.
03
The table is 312 in (7,925 mm) long and the standard tool capacity is 12. A second tool changer, which Onsrud lists as an upgrade, shortens the trip the gantry makes to change tools when it is working at the far end.
04
The frame is 419 in (10,643 mm) by 142 in (3,607 mm), and 155 in (3,937 mm) high. Allow extra length if material is loaded from the end, and check the route into the building for a machine of that height.
