Johnford ST-240DH
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-240DH cost?
Price estimate
We do not have a price for the Johnford ST-240DH 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
Longest bed, largest spindle, 32,600 kg (71,720 lb): the Johnford ST-240DH is the heaviest model on Johnford's medium-sized ST page.
Its numbers are the extremes of that page combined. Z travel is 6,050 mm (238.2 in) and tailstock travel 5,400 mm (212.6 in). The spindle bore is 185 mm (7.3 in) with 165 mm (6.5 in) of bar capacity, on a 240 mm (9.4 in) bearing. Swing is 1,000 mm (39.4 in) over the bed and 800 mm (31.5 in) over the cross slide.
A machine like this is bought for a known family of parts, and the questions before ordering are specific ones. Does the longest part fit between chuck and center with the 5,400 mm (212.6 in) of tailstock travel? Is 1,000 rpm fast enough for the smallest diameter? Is 30 / 37 kW (40.2 / 49.6 hp) enough, or should the 37 / 45 kW (49.6 / 60.3 hp) motor be specified? Do the parts need steady rests, a C axis or live tools, all of which are options?
X travel is 420 mm (16.5 in), rapids are 10 m/min on X and 12 m/min on Z, and the outside dimensions are 11,667 x 2,504 x 2,955 mm (459.3 x 98.6 x 116.3 in).
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 | 165 mm (6.5 in) |
| Spindle Nose | A2-15 |
| Spindle Bore | 185 mm (7.3 in) / Geared headstock 176 mm (6.9 in) |
| Spindle Transmission | Auto 4 speeds |
| Max Spindle Speed | 1,000 rpm |
| Spindle Speed Geared Headstock | 1,000 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 | 240 mm (9.4 in) |
| Turret Stations | 12 |
| X Axis Travel | 420 mm (16.5 in) |
| Y Axis Travel Optional | ±75 mm (±3 in) |
| Z Axis Travel | 6,050 mm (238.2 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 5,400 mm (212.6 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 | 32,600 kg (71,720 lb) |
| Machine Dimensions | 11,667 x 2,504 x 2,955 mm (459.3 x 98.6 x 116.3 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 6,050 mm (238.2 in) of Z travel with a 185 mm (7.3 in) bore
- 1,000 mm (39.4 in) swing over the bed, 800 mm (31.5 in) over the cross slide
- 240 mm (9.4 in) spindle bearing diameter
- Tailstock travel of 5,400 mm (212.6 in)
- Optional 37 / 45 kW (49.6 / 60.3 hp) motor
Limitations
- 32,600 kg (71,720 lb), the heaviest on the page
- Spindle speed of 1,000 rpm
- 11,667 mm (459.3 in) long
- Steady rests, C axis and live tools are all options
Best For
Frequently Asked Questions
01
Part length against the 6,050 mm (238.2 in) of Z travel and 5,400 mm (212.6 in) of tailstock travel, the smallest diameter against the 1,000 rpm spindle speed, and whether the 30 / 37 kW (40.2 / 49.6 hp) motor or the optional 37 / 45 kW (49.6 / 60.3 hp) is needed.
02
03
165 mm (6.5 in), through a bore of 185 mm (7.3 in), or 176 mm (6.9 in) with the geared headstock. The chuck is 510 mm (20.1 in), with 610 mm (24 in) as an option.
04
11,667 x 2,504 mm (459.3 x 98.6 in), with a height of 2,955 mm (116.3 in). The chain type chip conveyor and its trolley need additional space.
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