Johnford ST-80CH
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-80CH cost?
Price estimate
We do not have a price for the Johnford ST-80CH 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
In the Johnford ST-80CH the A2-15 spindle meets a frame large enough to use it fully: 800 mm (31.5 in) of swing over the cross slide, 1,000 mm (39.4 in) over the bed and 2,000 mm (78.7 in) of Z travel.
The optional 610 mm (24 in) chuck sits well inside that swing, leaving space for long jaws and for parts gripped on a diameter larger than the chuck. The standard chuck is 510 mm (20.1 in).
It is also the shortest model on which the large swing comes with a heavy tailstock. The ST-70CX, the size below, has 800 mm (31.5 in) over the cross slide too, but an MT#5 quill of Ø125 mm (4.9 in). The ST-80CH has a Ø200 mm (7.9 in) quill with MT#7 and 150 mm (5.9 in) of travel. For a solid workpiece of large diameter held between centers, that is the deciding difference.
Power is 30 / 37 kW (40.2 / 49.6 hp), optionally 37 / 45 kW (49.6 / 60.3 hp), through four automatic speeds: 1,500 rpm with the belt-type gearbox or 1,200 rpm with the geared headstock. X travel is 420 mm (16.5 in). The machine weighs 15,400 kg (33,880 lb).
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 1,000 mm (39.4 in) |
| Swing Over Cross Slide | 800 mm (31.5 in) |
| Chuck Size | 510 mm (20.1 in) |
| Chuck Size Optional | 610 mm (24 in) |
| Bar Capacity | 139 mm (5.5 in) |
| Spindle Nose | A2-15 |
| Spindle Bore | 152 mm (6 in) |
| Spindle Transmission | Auto 4 speeds |
| Max Spindle Speed | 1,500 rpm (Std.); 1,400 rpm (Opt.) |
| Spindle Speed Geared Headstock | 1,200 rpm |
| Spindle Motor Power | 30 / 37 kW (40.2 / 49.6 hp) (Std.); 37 / 45 kW (49.6 / 60.3 hp) (Opt.) |
| Spindle Bearing Diameter | 200 mm (7.9 in) |
| Turret Stations | 12 |
| X Axis Travel | 420 mm (16.5 in) |
| Y Axis Travel Optional | ±75 mm (±3 in) |
| Z Axis Travel | 2,000 mm (78.7 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 1,700 mm (66.9 in) |
| Tailstock Quill Travel | 150 mm (5.9 in) |
| Tailstock Quill Diameter | Ø200 mm (Ø7.9 in) |
| Tailstock Taper | MT#7 |
| Servo Motor X | 7 kW |
| Servo Motor Y Optional | 3 kW |
| Servo Motor Z | 7 kW |
| Bed Inclination | 60° |
| Machine Weight | 15,400 kg (33,880 lb) |
| Machine Dimensions | 7,412 x 2,504 x 2,955 mm (291.8 x 98.6 x 116.3 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 800 mm (31.5 in) swing over the cross slide with a Ø200 mm (7.9 in) MT#7 quill
- 510 mm (20.1 in) chuck standard, 610 mm (24 in) optional
- 30 / 37 kW (40.2 / 49.6 hp) or 37 / 45 kW (49.6 / 60.3 hp)
- 420 mm (16.5 in) of X travel
- Belt-type gearbox or geared headstock
Limitations
- Spindle speed of 1,500 rpm at most
- Rapid traverse of 10 m/min on X and 12 m/min on Z
- 15,400 kg (33,880 lb) for 2,000 mm (78.7 in) of travel
- Bar capacity of 139 mm (5.5 in)
Best For
Frequently Asked Questions
01
Both swing 800 mm (31.5 in) over the cross slide. The ST-70CX has 1,600 mm (63 in) of Z travel and a Ø125 mm (4.9 in) MT#5 quill. The ST-80CH has 2,000 mm (78.7 in) and a Ø200 mm (7.9 in) MT#7 quill, and weighs 15,400 kg (33,880 lb) against 13,450 kg (29,590 lb) for the ST-70CX.
02
A 510 mm (20.1 in) 3-jaw hydraulic through-hole chuck is standard and a 610 mm (24 in) chuck optional. Swing is 1,000 mm (39.4 in) over the bed and 800 mm (31.5 in) over the cross slide.
03
1,500 rpm as standard or 1,400 rpm as an option with the belt type gear box, and 1,200 rpm with the geared headstock, each with four automatic speeds.
04
7,412 x 2,504 x 2,955 mm (291.8 x 98.6 x 116.3 in). The tailstock travels 1,700 mm (66.9 in) and the bed is inclined at 60°.
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